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<a href="https://github.com/liaoheng" class="github-corner" title="Follow me on GitHub" aria-label="Follow me on GitHub" rel="noopener" target="_blank"><svg width="80" height="80" viewBox="0 0 250 250" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a>
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<a href="/2024/02/21/android-ripple/" class="post-title-link" itemprop="url">Android Ripple(波纹效果)</a>
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<span class="post-meta-item-text">发表于</span>
<time title="创建时间：2024-02-21 13:49:59 / 修改时间：14:11:49" itemprop="dateCreated datePublished" datetime="2024-02-21T13:49:59+08:00">2024-02-21</time>
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<p>控件中的Ripple标签，即对应一个RippleDrawable，当它被设置为一个控件的background属性时，控件在按下时，即会显示水波效果</p>
</blockquote>
<h1 id="自定义"><a href="#自定义" class="headerlink" title="自定义"></a>自定义</h1><h2 id="没有边界的Ripple（Ripple-With-No-Mask）"><a href="#没有边界的Ripple（Ripple-With-No-Mask）" class="headerlink" title="没有边界的Ripple（Ripple With No Mask）"></a>没有边界的Ripple（Ripple With No Mask）</h2><p>波纹的内直径<code>就是</code>控件的长或者宽，实现内容如下，不需要任何操作即可。</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">ripple</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:color</span>=<span class="string">"?attr/colorControlHighlight"</span> /></span></span><br></pre></td></tr></table></figure>
<p><img data-src="https://pic.liaoheng.me/hc-pic/2024/02/fb5e3c11b575fa8e46d0847e7d3eea49.gif"></p>
<h2 id="有边界的Ripple（Ripple-With-Mask）"><a href="#有边界的Ripple（Ripple-With-Mask）" class="headerlink" title="有边界的Ripple（Ripple With Mask）"></a>有边界的Ripple（Ripple With Mask）</h2><p>波纹<code>不超过</code>控件的显示范围，实现内容如下，需要增加一个@android:id/mask配置，配置中的颜色就是波纹的背景色，会与ripple颜色重叠显示。</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">ripple</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:color</span>=<span class="string">"?attr/colorControlHighlight"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">item</span> <span class="attr">android:id</span>=<span class="string">"@android:id/mask"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">color</span> <span class="attr">android:color</span>=<span class="string">"@color/white"</span> /></span></span><br><span class="line"> <span class="tag"></<span class="name">item</span>></span></span><br><span class="line"><span class="tag"></<span class="name">ripple</span>></span></span><br></pre></td></tr></table></figure>
<p><img data-src="https://pic.liaoheng.me/hc-pic/2024/02/cb0c71e1f80ff24750032f3c05d2289c.gif"></p>
<h2 id="用图片作边界的Ripple（Ripple-With-Picture-Mask）"><a href="#用图片作边界的Ripple（Ripple-With-Picture-Mask）" class="headerlink" title="用图片作边界的Ripple（Ripple With Picture Mask）"></a>用图片作边界的Ripple（Ripple With Picture Mask）</h2><p>波纹<code>不超过</code>图片的显示范围，实现内容如下，需要增加一个@android:id/mask配置，配置中的图片就是波纹的背景，会与ripple颜色重叠显示。</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">ripple</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:color</span>=<span class="string">"?attr/colorControlHighlight"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">item</span> <span class="attr">android:id</span>=<span class="string">"@android:id/mask"</span> <span class="attr">android:drawable</span>=<span class="string">"@drawable/icon"</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">item</span>></span></span><br><span class="line"><span class="tag"></<span class="name">ripple</span>></span></span><br></pre></td></tr></table></figure>
<p><img data-src="https://pic.liaoheng.me/hc-pic/2024/02/bd440efc6f351d0cb406b131a7c69e59.gif"></p>
<h2 id="用形状作边界的Ripple（Ripple-With-Shape-Mask）"><a href="#用形状作边界的Ripple（Ripple-With-Shape-Mask）" class="headerlink" title="用形状作边界的Ripple（Ripple With Shape Mask）"></a>用形状作边界的Ripple（Ripple With Shape Mask）</h2><p>波纹<code>不超过</code>形状的显示范围，实现内容如下，需要增加一个@android:id/mask配置，配置中的形状就是波纹的背景，会与ripple颜色重叠显示。</p>
<ul>
<li>shape.xml<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">shape</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span> </span></span><br><span class="line"><span class="tag"> <span class="attr">android:shape</span>=<span class="string">"rectangle"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">solid</span> <span class="attr">android:color</span>=<span class="string">"#ff9d77"</span>/></span></span><br><span class="line"> <span class="tag"><<span class="name">corners</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:bottomRightRadius</span>=<span class="string">"100dp"</span>/></span></span><br><span class="line"><span class="tag"></<span class="name">shape</span>></span></span><br></pre></td></tr></table></figure>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><?xml version=<span class="string">"1.0"</span> encoding=<span class="string">"utf-8"</span>?></span></span><br><span class="line"><span class="tag"><<span class="name">ripple</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:color</span>=<span class="string">"#FF0000"</span> ></span></span><br><span class="line"> <span class="tag"><<span class="name">item</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:id</span>=<span class="string">"@android:id/mask"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:drawable</span>=<span class="string">"@drawable/shape"</span>/></span></span><br><span class="line"><span class="tag"></<span class="name">ripple</span>></span></span><br></pre></td></tr></table></figure>
<img data-src="https://pic.liaoheng.me/hc-pic/2024/02/ae148630116fff2c868330bbcd1c8cbb.gif"></li>
</ul>
<h2 id="搭配selector作为Ripple（Ripple-With-Selector）"><a href="#搭配selector作为Ripple（Ripple-With-Selector）" class="headerlink" title="搭配selector作为Ripple（Ripple With Selector）"></a>搭配selector作为Ripple（Ripple With Selector）</h2><blockquote>
<p>如果在一个ripple标签中，添加一个item，在item的内部写上<selector>标签，那么这个RippleDrawable在按下的时候，同时具有水波效果和selector指定的图层。</p>
</blockquote>
<p>波纹<code>不超过</code>Selector的显示范围，实现内容如下，需要增加一个@android:id/mask配置，配置中的Selector就是波纹的背景，会与ripple颜色重叠显示。</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><?xml version=<span class="string">"1.0"</span> encoding=<span class="string">"utf-8"</span>?></span></span><br><span class="line"><span class="tag"><<span class="name">ripple</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:color</span>=<span class="string">"#FF0000"</span> ></span></span><br><span class="line"> <span class="tag"><<span class="name">item</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">selector</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">item</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:drawable</span>=<span class="string">"@drawable/icon_p"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:state_pressed</span>=<span class="string">"true"</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">item</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">item</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:drawable</span>=<span class="string">"@drawable/icon_n"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:state_pressed</span>=<span class="string">"false"</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">item</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">selector</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">item</span>></span></span><br><span class="line"><span class="tag"></<span class="name">ripple</span>></span></span><br></pre></td></tr></table></figure>
<p><img data-src="https://pic.liaoheng.me/hc-pic/2024/02/171202fd7e581ad3d0d53296332cedb9.gif"></p>
<h1 id="系统默认"><a href="#系统默认" class="headerlink" title="系统默认"></a>系统默认</h1><p>在控件中设置背景如下:</p>
<ul>
<li>有边界:<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">ImageView</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:background</span>=<span class="string">"?selectableItemBackground"</span></span></span><br><span class="line"><span class="tag"> /></span></span><br></pre></td></tr></table></figure></li>
<li>无边界:<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">ImageView</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:background</span>=<span class="string">"?selectableItemBackgroundBorderless"</span></span></span><br><span class="line"><span class="tag"> /></span></span><br></pre></td></tr></table></figure></li>
</ul>
<h2 id="selectableItemBackground"><a href="#selectableItemBackground" class="headerlink" title="selectableItemBackground"></a>selectableItemBackground</h2><p>文件位于：<br><code>/sdk/android/platforms/android-29/data/res/drawable/item_background_material.xml</code></p>
<p>文件内容如下：</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">ripple</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:color</span>=<span class="string">"?attr/colorControlHighlight"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">item</span> <span class="attr">android:id</span>=<span class="string">"@id/mask"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">color</span> <span class="attr">android:color</span>=<span class="string">"@color/white"</span> /></span></span><br><span class="line"> <span class="tag"></<span class="name">item</span>></span></span><br><span class="line"><span class="tag"></<span class="name">ripple</span>></span></span><br></pre></td></tr></table></figure>
<p>文件中的mask参数，用来控制波纹动画的背景或者说是边界，这里波纹动画只会在mask中显示，也就达到动画不超过控件的目的。</p>
<h2 id="selectableItemBackgroundBorderless"><a href="#selectableItemBackgroundBorderless" class="headerlink" title="selectableItemBackgroundBorderless"></a>selectableItemBackgroundBorderless</h2><p>文件位于：<br><code>/sdk/android/platforms/android-29/data/res/drawable/item_background_borderless_material.xml</code><br>文件内容如下：</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">ripple</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:color</span>=<span class="string">"?attr/colorControlHighlight"</span> /></span></span><br></pre></td></tr></table></figure>
<p>文件中的没有mask参数，波纹动画效果会超过控件的大小。</p>
<h2 id="colorControlHighlight-attr-x2F-colorControlHighlight"><a href="#colorControlHighlight-attr-x2F-colorControlHighlight" class="headerlink" title="colorControlHighlight(?attr/colorControlHighlight)"></a>colorControlHighlight(?attr/colorControlHighlight)</h2><p>文件位于：<br><code>/sdk/android/platforms/android-29/data/res/color/ripple_material_light.xml</code>这里的light与<code>Theme.AppCompat.Light</code>有关。<br>文件内容如下：</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">selector</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">item</span> <span class="attr">android:alpha</span>=<span class="string">"@dimen/highlight_alpha_material_light"</span></span></span><br><span class="line"><span class="tag"> <span class="attr">android:color</span>=<span class="string">"@color/foreground_material_light"</span> /></span></span><br><span class="line"><span class="tag"></<span class="name">selector</span>></span></span><br></pre></td></tr></table></figure>
<h1 id="参考"><a href="#参考" class="headerlink" title="参考"></a>参考</h1><p><a target="_blank" rel="noopener" href="https://stackoverflow.com/questions/64654113/where-can-i-found-definition-for-selectableitembackgroundborderless-reference-at">where-can-i-found-definition-for-selectableitembackgroundborderless-reference-at</a></p>
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<h1 id="概述"><a href="#概述" class="headerlink" title="概述"></a>概述</h1><p>此文主要是简单的探索一下蓝牙电话和蓝牙音乐相关协议栈，所以很多细节并未涉及。</p>
<p>一般而言，我们把某个协议的实现代码称为协议栈(protocol stack)，要理解协议栈需要先了解蓝牙的核心系统架构，如下图：</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV6Ybd.png"></p>
<p>也可简单的<strong>抽象为3层</strong>：<img data-src="https://s1.ax1x.com/2022/04/11/LV6JDH.png"></p>
<ul>
<li>**User Application(Host)**：User Application即应用层，也被称为Host，我们调用Bluetooth API就属于应用层，例如，<a target="_blank" rel="noopener" href="https://developer.android.com/reference/android/bluetooth/BluetoothAdapter.html">BluetoothAdapter</a>中提供的接口。</li>
<li><strong>HCI (Host controller Interface)<strong>：上层在调用蓝牙API时，</strong>不会直接操作蓝牙底层</strong>(Controller)相关接口，而是<strong>通过HCI下发对应操作的Command给Controller</strong>，然后底层执行命令后返回执行结果，<strong>即Controller发送Event给HCI，HCI再通知给应用层</strong>，HCI起到了一个<strong>中间层</strong>的作用。</li>
<li><strong>Controller</strong>：Controller是在最底层，硬件驱动。</li>
</ul>
<p>按照上面的定义，HCI与Host层中的协议实现就是<strong>蓝牙协议栈</strong>。</p>
<h2 id="HCI"><a href="#HCI" class="headerlink" title="HCI"></a>HCI</h2><blockquote>
<p> BLUETOOTH SPECIFICATION Version 4.2 [Vol 2, Part E] page 400 </p>
<p> HCI（HOST CONTROLLER INTERFACE）：主机控制层接口，主要负责透过transport把协议栈的数据发送给蓝牙芯片，并且接受来自蓝牙芯片的数据，数据主要分为HCI COMMAND(HOST->CONTROLLER),HCI EVENT(HOST<-CONTROLLER),HCI ACL(HOST<->CONTROLLER),HCI SCO(这个有点些微差异，因为部分芯片的SCO数据不是透过TRANSPORT直接跟HOST沟通，而是通过特殊的引脚，PCM IN/OUT/SYNC/CLK脚来传输数据)</p>
</blockquote>
<p>HOST层的几乎所有数据最后都会通过HCI，所以我们通过HCI的日志就可以了解蓝牙协议栈中每个协议，手机中可以通过开发者模式打开HCI日志开关，推荐使用<strong>wireshark</strong>或者<strong>Frontline ComProbe Protocol Analysis System</strong>来分析HCI日志，下面给出来的的日志都是<strong>wireshark</strong>的结果。</p>
<p>HCI日志由各种数据包组成，我们需要了解其中的两种数据包如下：</p>
<h3 id="Command-数据包"><a href="#Command-数据包" class="headerlink" title="Command 数据包"></a>Command 数据包</h3><p>HCI Command数据包格式如下，开头的<strong>Opcode是区分不同类型的命令的唯一标识</strong>，Opcode由<strong>OpCode Group Field (OGF)</strong> 和 **OpCode Command Field (OCF)**组成。根据OGF的值，可以将HCI commands进行分类。OpCode 的计算公式为：<code>OpCode = OGF << 6 + OCF</code> <strong>。有了OpCode计算的方式，我们就可以</strong>通过OpCode过滤HCI log里面的指定类型的HCI Command。</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV608f.png"></p>
<p>一次HCI Command指令发送完成，通常两条数据包，一条是host给controller的指令，一条是controller给host的指令反馈，可以确定指令发送是成功的。</p>
<h3 id="Event-数据包"><a href="#Event-数据包" class="headerlink" title="Event 数据包"></a>Event 数据包</h3><p>HCI Event 数据包由controller发送给Host，其中可以是蓝牙设备的消息也可以是连接的蓝牙设备的消息。</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV6B28.png"></p>
<h1 id="设备连接"><a href="#设备连接" class="headerlink" title="设备连接"></a>设备连接</h1><h2 id="蓝牙设备状态"><a href="#蓝牙设备状态" class="headerlink" title="蓝牙设备状态"></a>蓝牙设备状态</h2><blockquote>
<p>BLUETOOTH SPECIFICATION Version 4.2 [Vol 2, Part B] page 159 </p>
</blockquote>
<p>扫描设备然后与之建立连接是蓝牙工作流程的第一步，所以先要了解一下蓝牙的状态如下图：</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV6wPP.png"></p>
<p>从<u>蓝牙状态转换图</u>中可以看出 STANDBY状体是蓝牙设备的默认状态。</p>
<p><strong>Page</strong>：这个子状态就是我们通常称为的连接(寻呼)，进行连接/激活对应的slave的操作我们就称为page。</p>
<p><strong>Page scan</strong>：这个子状态是和page对应的，它就是等待被page的slave所处的状态，换句话说，若想被page到，我们就要处于page scan的状态。</p>
<p><strong>inquiry</strong>：这就是我们通常所说的扫描状态，这个状态的设备就是去扫描周围的设备。</p>
<p><strong>inquiry scan</strong>：这就是我们通常看到的可被发现的设备。体现在上层就是我们在android系统中点击设备可被周围什么发现，那设备就处于这样的状态。</p>
<h2 id="逻辑链路传输协议"><a href="#逻辑链路传输协议" class="headerlink" title="逻辑链路传输协议"></a>逻辑链路传输协议</h2><h3 id="ACL"><a href="#ACL" class="headerlink" title="ACL"></a>ACL</h3><blockquote>
<p>BLUETOOTH SPECIFICATION Version 4.2 [Vol 1, Part A] page 63 </p>
<p>The asynchronous connection-oriented (ACL) logical transport is used to carry<br>LMP and L2CAP control signaling and best effort asynchronous user data. The<br>ACL logical transport uses a 1-bit ARQN/SEQN scheme to provide simple<br>channel reliability. Every active slave device within a piconet has one ACL<br>logical transport to the piconet master, known as the default ACL. </p>
</blockquote>
<p>ACL全称<strong>BR/EDR Asynchronous Connection-oriented</strong>，定向连接，它既支持对称连接，也支持不对称连接（既可以一对一，也可以一对多）。主设备负责控制链路带宽，并决定微微网中的每个从设备可以占用多少带宽和连接的对称性。从设备只有被选中时才能传送数据。ACL链路也支持接收主设备发给微微网中所有从设备的广播消息。</p>
<p>建立ACL需要设备HCI之间进行的下面的操作，这个也与<strong>蓝牙状态</strong>息息相关。</p>
<h4 id="开始扫描"><a href="#开始扫描" class="headerlink" title="开始扫描"></a>开始扫描</h4><ul>
<li><p><strong>Host</strong>:</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">LocalBluetoothManager.getInstance().getBluetoothAdapter().startScanning(<span class="literal">true</span>);</span><br></pre></td></tr></table></figure>
</li>
<li><p><strong>Controller</strong>:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br></pre></td><td class="code"><pre><span class="line">#发送扫描指令</span><br><span class="line">> 103 4.351128 host controller HCI_CMD 9 Sent Inquiry</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Inquiry</span><br><span class="line"> Command Opcode: Inquiry (0x0401)</span><br><span class="line"> 0000 01.. .... .... = Opcode Group Field: Link Control Commands (0x01)</span><br><span class="line"> .... ..00 0000 0001 = Opcode Command Field: Inquiry (0x001)</span><br><span class="line"> Parameter Total Length: 5</span><br><span class="line"> LAP: 0x9e8b33</span><br><span class="line"> Inquiry Length: 10 (12.8 sec)</span><br><span class="line"> Num Responses: 0</span><br><span class="line"> [Pending in frame: 104]</span><br><span class="line"> [Command-Pending Delta: 0.846ms]</span><br><span class="line"> [Response in frame: 429]</span><br><span class="line"> [Command-Response Delta: 12811.07ms]</span><br><span class="line"></span><br><span class="line">#HCI反馈扫描指令状态</span><br><span class="line">> 104 4.351974 controller host HCI_EVT 7 Rcvd Command Status (Inquiry)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Command Status</span><br><span class="line"> Event Code: Command Status (0x0f)</span><br><span class="line"> Parameter Total Length: 4</span><br><span class="line"> Status: Pending (0x00)</span><br><span class="line"> Number of Allowed Command Packets: 1</span><br><span class="line"> Command Opcode: Inquiry (0x0401)</span><br><span class="line"> [Command in frame: 103]</span><br><span class="line"> [Response in frame: 429]</span><br><span class="line"> [Command-Pending Delta: 0.846ms]</span><br><span class="line"> [Pending-Response Delta: 12810.224ms]</span><br><span class="line"></span><br><span class="line">#HCI发送的扫描到的设备信息</span><br><span class="line">> 114 4.505582 controller host HCI_EVT 258 Rcvd Extended Inquiry Result</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Extended Inquiry Result</span><br><span class="line"> Event Code: Extended Inquiry Result (0x2f)</span><br><span class="line"> Parameter Total Length: 255</span><br><span class="line"> Number of responses: 1</span><br><span class="line"> BD_ADDR: XiaomiCo_77:c2:35 (00:00:00:00:00:00)</span><br><span class="line"> Page Scan Repetition Mode: R1 (0x01)</span><br><span class="line"> Reserved: 0x02</span><br><span class="line"> Class of Device: 0x5a020c (Phone:Smartphone - services: Networking Capturing ObjectTransfer Telephony)</span><br><span class="line"> .000 0000 0011 0100 = Clock Offset: 0x0034</span><br><span class="line"> RSSI: -88 dBm</span><br><span class="line"> Extended Inquiry Response Data</span><br><span class="line"> Device Name: +My Phone1234567890123456789012</span><br><span class="line"> 16-bit Service Class UUIDs</span><br><span class="line"> 32-bit Service Class UUIDs</span><br><span class="line"> 128-bit Service Class UUIDs</span><br><span class="line"> Unused</span><br><span class="line"></span><br></pre></td></tr></table></figure></li>
</ul>
<h4 id="停止扫描"><a href="#停止扫描" class="headerlink" title="停止扫描"></a>停止扫描</h4><ul>
<li><p><strong>Host</strong>:</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">LocalBluetoothManager.getInstance().getBluetoothAdapter().stopScanning();</span><br></pre></td></tr></table></figure>
</li>
<li><p><strong>Controller</strong>:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line">> 85 2.202129 host controller HCI_CMD 4 Sent Inquiry Cancel</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Inquiry Cancel</span><br><span class="line"> Command Opcode: Inquiry Cancel (0x0402)</span><br><span class="line"> 0000 01.. .... .... = Opcode Group Field: Link Control Commands (0x01)</span><br><span class="line"> .... ..00 0000 0010 = Opcode Command Field: Inquiry Cancel (0x002)</span><br><span class="line"> Parameter Total Length: 0</span><br><span class="line"> [Response in frame: 86]</span><br><span class="line"> [Command-Response Delta: 2.051ms]</span><br><span class="line"></span><br><span class="line">> 86 2.204180 controller host HCI_EVT 7 Rcvd Command Complete (Inquiry Cancel)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Command Complete</span><br><span class="line"> Event Code: Command Complete (0x0e)</span><br><span class="line"> Parameter Total Length: 4</span><br><span class="line"> Number of Allowed Command Packets: 1</span><br><span class="line"> Command Opcode: Inquiry Cancel (0x0402)</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> [Command in frame: 85]</span><br><span class="line"> [Command-Response Delta: 2.051ms]</span><br></pre></td></tr></table></figure></li>
</ul>
<h4 id="完成扫描"><a href="#完成扫描" class="headerlink" title="完成扫描"></a>完成扫描</h4><ul>
<li><p><strong>Host</strong>:</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">LocalBluetoothManager.getInstance().getEventManager().registerCallback(<span class="keyword">new</span> <span class="title class_">BluetoothCallback</span>() {</span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">onScanningStateChanged</span><span class="params">(<span class="type">boolean</span> started)</span> {</span><br><span class="line"> } </span><br><span class="line">});</span><br></pre></td></tr></table></figure>
</li>
<li><p><strong>Controller</strong>:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">> 429 17.162198 controller host HCI_EVT 4 Rcvd Inquiry Complete</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Inquiry Complete</span><br><span class="line"> Event Code: Inquiry Complete (0x01)</span><br><span class="line"> Parameter Total Length: 1</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> [Command in frame: 103]</span><br><span class="line"> [Pending in frame: 104]</span><br><span class="line"> [Pending-Response Delta: 12810.224ms]</span><br><span class="line"> [Command-Response Delta: 12811.07ms]</span><br></pre></td></tr></table></figure></li>
</ul>
<h4 id="设备配对"><a href="#设备配对" class="headerlink" title="设备配对"></a>设备配对</h4><p><img data-src="https://s1.ax1x.com/2022/04/11/LV6GKe.png"></p>
<h5 id="配对"><a href="#配对" class="headerlink" title="配对"></a>配对</h5><ul>
<li><p><strong>Host</strong>:</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">CachedBluetoothDevice.startPairing();</span><br></pre></td></tr></table></figure>
</li>
<li><p><strong>Controller</strong>:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br><span class="line">138</span><br><span class="line">139</span><br><span class="line">140</span><br><span class="line">141</span><br><span class="line">142</span><br><span class="line">143</span><br><span class="line">144</span><br><span class="line">145</span><br><span class="line">146</span><br><span class="line">147</span><br><span class="line">148</span><br><span class="line">149</span><br><span class="line">150</span><br><span class="line">151</span><br><span class="line">152</span><br><span class="line">153</span><br><span class="line">154</span><br><span class="line">155</span><br><span class="line">156</span><br><span class="line">157</span><br><span class="line">158</span><br><span class="line">159</span><br><span class="line">160</span><br><span class="line">161</span><br><span class="line">162</span><br><span class="line">163</span><br><span class="line">164</span><br><span class="line">165</span><br><span class="line">166</span><br><span class="line">167</span><br><span class="line">168</span><br><span class="line">169</span><br><span class="line">170</span><br><span class="line">171</span><br><span class="line">172</span><br><span class="line">173</span><br><span class="line">174</span><br><span class="line">175</span><br><span class="line">176</span><br><span class="line">177</span><br><span class="line">178</span><br><span class="line">179</span><br></pre></td><td class="code"><pre><span class="line">#删除需要连接设备本地记忆的Link Key</span><br><span class="line">> 685 33.812149 host controller HCI_CMD 11 Sent Delete Stored Link Key</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Delete Stored Link Key</span><br><span class="line"> Command Opcode: Delete Stored Link Key (0x0c12)</span><br><span class="line"> 0000 11.. .... .... = Opcode Group Field: Host Controller & Baseband Commands (0x03)</span><br><span class="line"> .... ..00 0001 0010 = Opcode Command Field: Delete Stored Link Key (0x012)</span><br><span class="line"> Parameter Total Length: 7</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Delete All Flag: Delete only Link Key for specified BD_ADDR (0x00)</span><br><span class="line"> [Response in frame: 686]</span><br><span class="line"> [Command-Response Delta: 2.147ms]</span><br><span class="line"></span><br><span class="line">#建立ACL连接</span><br><span class="line">> 687 33.814531 host controller HCI_CMD 17 Sent Create Connection</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Create Connection</span><br><span class="line"> Command Opcode: Create Connection (0x0405)</span><br><span class="line"> Parameter Total Length: 13</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Packet Type: 0xcc18, DH5, DM5, DH3, DM3, DH1, DM1</span><br><span class="line"> Page Scan Repetition Mode: R1 (0x01)</span><br><span class="line"> Page Scan Mode: Mandatory Page Scan Mode (0x00)</span><br><span class="line"> .000 0010 0000 1000 = Clock Offset: 0x0208 (650 msec)</span><br><span class="line"> 1... .... .... .... = Clock_Offset_Valid_Flag: true (1)</span><br><span class="line"> Allow Role Switch: Local device may be master, or may become slave after accepting a master slave switch. (0x01)</span><br><span class="line"> [Pending in frame: 688]</span><br><span class="line"> [Command-Pending Delta: 0.965ms]</span><br><span class="line"> [Response in frame: 690]</span><br><span class="line"> [Command-Response Delta: 1118.609ms]</span><br><span class="line"></span><br><span class="line">#建立ACL连接成功</span><br><span class="line">> 690 34.933140 controller host HCI_EVT 14 Rcvd Connect Complete</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Connect Complete</span><br><span class="line"> Event Code: Connect Complete (0x03)</span><br><span class="line"> Parameter Total Length: 11</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> Connection Handle: 0x0033</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Link Type: ACL connection (Data Channels) (0x01)</span><br><span class="line"> Encryption Mode: Encryption Disabled (0x00)</span><br><span class="line"> [Command in frame: 687]</span><br><span class="line"> [Pending in frame: 688]</span><br><span class="line"> [Pending-Response Delta: 1117.644ms]</span><br><span class="line"> [Command-Response Delta: 1118.609ms]</span><br><span class="line"></span><br><span class="line">#改变当前设备的角色，这里当前设备为从(Slave)，连接设备为主(Master)</span><br><span class="line">> 689 34.929964 controller host HCI_EVT 11 Rcvd Role Change</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Role Change</span><br><span class="line"> Event Code: Role Change (0x12)</span><br><span class="line"> Parameter Total Length: 8</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Role: Currently the Slave for specified BD_ADDR (0x01)</span><br><span class="line"></span><br><span class="line">#与设备建立连接之后，准备开始验证</span><br><span class="line">> 697 34.935615 host controller HCI_CMD 6 Sent Authentication Requested</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Authentication Requested</span><br><span class="line"> Command Opcode: Authentication Requested (0x0411)</span><br><span class="line"> Parameter Total Length: 2</span><br><span class="line"> Connection Handle: 0x0033</span><br><span class="line"> [Pending in frame: 699]</span><br><span class="line"> [Command-Pending Delta: 0.917ms]</span><br><span class="line"> [Response in frame: 743]</span><br><span class="line"> [Command-Response Delta: 4291.694ms]</span><br><span class="line"></span><br><span class="line">#连接设备询问Link Key</span><br><span class="line">> 701 34.936976 controller host HCI_EVT 9 Rcvd Link Key Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Link Key Request</span><br><span class="line"> Event Code: Link Key Request (0x17)</span><br><span class="line"> Parameter Total Length: 6</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"></span><br><span class="line">#当前设备无Link Key，也就是未于连接设备配对过</span><br><span class="line">> 705 34.938603 host controller HCI_CMD 10 Sent Link Key Request Negative Reply</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Link Key Request Negative Reply</span><br><span class="line"> Command Opcode: Link Key Request Negative Reply (0x040c)</span><br><span class="line"> 0000 01.. .... .... = Opcode Group Field: Link Control Commands (0x01)</span><br><span class="line"> .... ..00 0000 1100 = Opcode Command Field: Link Key Request Negative Reply (0x00c)</span><br><span class="line"> Parameter Total Length: 6</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> [Response in frame: 706]</span><br><span class="line"> [Command-Response Delta: 0.87ms]</span><br><span class="line"></span><br><span class="line">#使用的配对方式是`简单安全配对`SSP(Simple Secure Pairng), 就是直接弹配对码</span><br><span class="line"></span><br><span class="line">#连接设备询问当前设备的IO能力</span><br><span class="line">> 707 34.939729 controller host HCI_EVT 9 Rcvd IO Capability Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - IO Capability Request</span><br><span class="line"> Event Code: IO Capability Request (0x31)</span><br><span class="line"> Parameter Total Length: 6</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"></span><br><span class="line">#回复当前设备的IO能力</span><br><span class="line">>708 34.939897 host controller HCI_CMD 13 Sent IO Capability Request Reply</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - IO Capability Request Reply</span><br><span class="line"> Command Opcode: IO Capability Request Reply (0x042b)</span><br><span class="line"> 0000 01.. .... .... = Opcode Group Field: Link Control Commands (0x01)</span><br><span class="line"> .... ..00 0010 1011 = Opcode Command Field: IO Capability Request Reply (0x02b)</span><br><span class="line"> Parameter Total Length: 9</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> IO Capability: Display Yes/No (1)</span><br><span class="line"> OOB Data Present: OOB Authentication Data Not Present (0)</span><br><span class="line"> Authentication Requirements: MITM Protection Required - Dedicated Bonding. Use IO Capability To Determine Procedure, No Secure Connection (3)</span><br><span class="line"> [Response in frame: 709]</span><br><span class="line"> [Command-Response Delta: 0.811ms]</span><br><span class="line"></span><br><span class="line">######其它参数同步</span><br><span class="line"></span><br><span class="line">#连接设备的IO能力，io能力参数为Display Yes/No (0x01)，需要用户确认</span><br><span class="line">> 737 36.532369 controller host HCI_EVT 12 Rcvd IO Capability Response</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - IO Capability Response</span><br><span class="line"> Event Code: IO Capability Response (0x32)</span><br><span class="line"> Parameter Total Length: 9</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> IO Capability: Display Yes/No (0x01)</span><br><span class="line"> OOB Data Present: OOB Authentication Data Not Present (0)</span><br><span class="line"> Authentication Requirements: MITM Protection Required - Dedicated Bonding. Use IO Capability To Determine Procedure, No Secure Connection (3)</span><br><span class="line"></span><br><span class="line">#当前设备接收到配对码信息，Numeric Value就是显示的配对码</span><br><span class="line">> 738 37.066181 controller host HCI_EVT 13 Rcvd User Confirmation Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - User Confirmation Request</span><br><span class="line"> Event Code: User Confirmation Request (0x33)</span><br><span class="line"> Parameter Total Length: 10</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Numeric Value: 446514</span><br><span class="line"></span><br><span class="line">#回复连接设备已接收到配对码信息</span><br><span class="line">> 739 37.096306 host controller HCI_CMD 10 Sent User Confirmation Request Reply</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - User Confirmation Request Reply</span><br><span class="line"> Command Opcode: User Confirmation Request Reply (0x042c)</span><br><span class="line"> 0000 01.. .... .... = Opcode Group Field: Link Control Commands (0x01)</span><br><span class="line"> .... ..00 0010 1100 = Opcode Command Field: User Confirmation Request Reply (0x02c)</span><br><span class="line"> Parameter Total Length: 6</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> [Response in frame: 740]</span><br><span class="line"> [Command-Response Delta: 1.46ms]</span><br><span class="line"></span><br><span class="line">#连接设备SSP验证成功</span><br><span class="line">> 741 39.215747 controller host HCI_EVT 10 Rcvd Simple Pairing Complete</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Simple Pairing Complete</span><br><span class="line"> Event Code: Simple Pairing Complete (0x36)</span><br><span class="line"> Parameter Total Length: 7</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"></span><br><span class="line">#连接设备的Link Key，需要保存，用于下次连接</span><br><span class="line">> 742 39.226970 controller host HCI_EVT 26 Rcvd Link Key Notification</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Link Key Notification</span><br><span class="line"> Event Code: Link Key Notification (0x18)</span><br><span class="line"> Parameter Total Length: 23</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Link Key: bc31fb070e91eec2f2296fbf9bc8b518</span><br><span class="line"> Key Type: Unknown (0x08)</span><br><span class="line"></span><br><span class="line">#验证完成</span><br><span class="line">> 743 39.227309 controller host HCI_EVT 6 Rcvd Authentication Complete</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Authentication Complete</span><br><span class="line"> Event Code: Authentication Complete (0x06)</span><br><span class="line"> Parameter Total Length: 3</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> Connection Handle: 0x0033</span><br><span class="line"> [Command in frame: 697]</span><br><span class="line"> [Pending in frame: 699]</span><br><span class="line"> [Pending-Response Delta: 4290.777ms]</span><br><span class="line"> [Command-Response Delta: 4291.694ms]</span><br></pre></td></tr></table></figure></li>
</ul>
<h5 id="被配对"><a href="#被配对" class="headerlink" title="被配对"></a>被配对</h5><ul>
<li><p><strong>Host</strong>:</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">LocalBluetoothManager.getInstance().getEventManager().registerCallback(<span class="keyword">new</span> <span class="title class_">BluetoothCallback</span>() {</span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">onDeviceBondStateChanged</span><span class="params">(CachedBluetoothDevice cachedDevice, <span class="type">int</span> bondState)</span> {</span><br><span class="line"> }</span><br><span class="line">});</span><br></pre></td></tr></table></figure>
</li>
<li><p><strong>Controller</strong>:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br></pre></td><td class="code"><pre><span class="line">#请求ACL连接</span><br><span class="line">> 326 21.946869 controller host HCI_EVT 13 Rcvd Connect Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Connect Request</span><br><span class="line"> Event Code: Connect Request (0x04)</span><br><span class="line"> Parameter Total Length: 10</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Class of Device: 0x5a020c (Phone:Smartphone - services: Networking Capturing ObjectTransfer Telephony)</span><br><span class="line"> Link Type: ACL connection (Data Channels) (0x01)</span><br><span class="line"></span><br><span class="line">#允许ACL连接</span><br><span class="line">> 327 21.947178 host controller HCI_CMD 11 Sent Accept Connection Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Accept Connection Request</span><br><span class="line"> Command Opcode: Accept Connection Request (0x0409)</span><br><span class="line"> Parameter Total Length: 7</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Role: Remain the Slave for this connection. The LM will NOT perform the role switch. (0x01)</span><br><span class="line"> [Pending in frame: 328]</span><br><span class="line"> [Command-Pending Delta: 0.685ms]</span><br><span class="line"> [Response in frame: 329]</span><br><span class="line"> [Command-Response Delta: 4.432ms]</span><br><span class="line"></span><br><span class="line">#ACL连接成功</span><br><span class="line">> 329 21.951610 controller host HCI_EVT 14 Rcvd Connect Complete</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Connect Complete</span><br><span class="line"> Event Code: Connect Complete (0x03)</span><br><span class="line"> Parameter Total Length: 11</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> Connection Handle: 0x0033</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Link Type: ACL connection (Data Channels) (0x01)</span><br><span class="line"> Encryption Mode: Encryption Disabled (0x00)</span><br><span class="line"> [Command in frame: 327]</span><br><span class="line"> [Pending in frame: 328]</span><br><span class="line"> [Pending-Response Delta: 3.747ms]</span><br><span class="line"> [Command-Response Delta: 4.432ms]</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">> 370 22.259461 controller host HCI_EVT 12 Rcvd IO Capability Response</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - IO Capability Response</span><br><span class="line"> Event Code: IO Capability Response (0x32)</span><br><span class="line"> Parameter Total Length: 9</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> IO Capability: Display Yes/No (0x01)</span><br><span class="line"> OOB Data Present: OOB Authentication Data Not Present (0)</span><br><span class="line"> Authentication Requirements: MITM Protection Required - Dedicated Bonding. Use IO Capability To Determine Procedure, No Secure Connection (3)</span><br><span class="line"></span><br><span class="line">> 371 22.259809 controller host HCI_EVT 9 Rcvd IO Capability Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - IO Capability Request</span><br><span class="line"> Event Code: IO Capability Request (0x31)</span><br><span class="line"> Parameter Total Length: 6</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"></span><br><span class="line">> 372 22.259982 host controller HCI_CMD 13 Sent IO Capability Request Reply</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - IO Capability Request Reply</span><br><span class="line"> Command Opcode: IO Capability Request Reply (0x042b)</span><br><span class="line"> Parameter Total Length: 9</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> IO Capability: Display Yes/No (1)</span><br><span class="line"> OOB Data Present: OOB Authentication Data Not Present (0)</span><br><span class="line"> Authentication Requirements: MITM Protection Required - Dedicated Bonding. Use IO Capability To Determine Procedure, No Secure Connection (3)</span><br><span class="line"> [Response in frame: 373]</span><br><span class="line"> [Command-Response Delta: 0.619ms]</span><br><span class="line"></span><br><span class="line">> 374 22.958223 controller host HCI_EVT 13 Rcvd User Confirmation Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - User Confirmation Request</span><br><span class="line"> Event Code: User Confirmation Request (0x33)</span><br><span class="line"> Parameter Total Length: 10</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Numeric Value: 804568</span><br><span class="line"></span><br><span class="line">> 375 23.069385 host controller HCI_CMD 10 Sent User Confirmation Request Reply</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - User Confirmation Request Reply</span><br><span class="line"> Command Opcode: User Confirmation Request Reply (0x042c)</span><br><span class="line"> Parameter Total Length: 6</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> [Response in frame: 376]</span><br><span class="line"> [Command-Response Delta: 1.81ms]</span><br><span class="line"></span><br><span class="line">#连接设备SSP验证成功</span><br><span class="line">> 377 26.919540 controller host HCI_EVT 10 Rcvd Simple Pairing Complete</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Simple Pairing Complete</span><br><span class="line"> Event Code: Simple Pairing Complete (0x36)</span><br><span class="line"> Parameter Total Length: 7</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"></span><br><span class="line">#连接设备的Link Key，需要保存，用于下次连接</span><br><span class="line">> 378 26.926691 controller host HCI_EVT 26 Rcvd Link Key Notification</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Link Key Notification</span><br><span class="line"> Event Code: Link Key Notification (0x18)</span><br><span class="line"> Parameter Total Length: 23</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Link Key: 2160acf6b7403a97050f64de72570b1d</span><br><span class="line"> Key Type: Unknown (0x08)</span><br></pre></td></tr></table></figure></li>
</ul>
<h4 id="设备连接-1"><a href="#设备连接-1" class="headerlink" title="设备连接"></a>设备连接</h4><p><img data-src="https://s1.ax1x.com/2022/04/11/LV63vD.png"></p>
<h5 id="连接"><a href="#连接" class="headerlink" title="连接"></a>连接</h5><ul>
<li><p><strong>Host</strong>:</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">CachedBluetoothDevice.conntect(<span class="literal">true</span>);</span><br></pre></td></tr></table></figure>
</li>
<li><p><strong>Controller</strong>:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br></pre></td><td class="code"><pre><span class="line">> 1214 47.023224 host controller HCI_CMD 17 Sent Create Connection</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Create Connection</span><br><span class="line"> Command Opcode: Create Connection (0x0405)</span><br><span class="line"> Parameter Total Length: 13</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Packet Type: 0xcc18, DH5, DM5, DH3, DM3, DH1, DM1</span><br><span class="line"> Page Scan Repetition Mode: R1 (0x01)</span><br><span class="line"> Page Scan Mode: Mandatory Page Scan Mode (0x00)</span><br><span class="line"> .011 1001 0100 0100 = Clock Offset: 0x3944 (18325 msec)</span><br><span class="line"> 1... .... .... .... = Clock_Offset_Valid_Flag: true (1)</span><br><span class="line"> Allow Role Switch: Local device may be master, or may become slave after accepting a master slave switch. (0x01)</span><br><span class="line"> [Pending in frame: 1215]</span><br><span class="line"> [Command-Pending Delta: 1.458ms]</span><br><span class="line"> [Response in frame: 1217]</span><br><span class="line"> [Command-Response Delta: 1630.81ms]</span><br><span class="line"></span><br><span class="line">> 1216 48.646874 controller host HCI_EVT 11 Rcvd Role Change</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Role Change</span><br><span class="line"> Event Code: Role Change (0x12)</span><br><span class="line"> Parameter Total Length: 8</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Role: Currently the Slave for specified BD_ADDR (0x01)</span><br><span class="line"></span><br><span class="line">> 1217 48.654034 controller host HCI_EVT 14 Rcvd Connect Complete</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Connect Complete</span><br><span class="line"> Event Code: Connect Complete (0x03)</span><br><span class="line"> Parameter Total Length: 11</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> Connection Handle: 0x0033</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Link Type: ACL connection (Data Channels) (0x01)</span><br><span class="line"> Encryption Mode: Encryption Disabled (0x00)</span><br><span class="line"> [Command in frame: 1214]</span><br><span class="line"> [Pending in frame: 1215]</span><br><span class="line"> [Pending-Response Delta: 1629.352ms]</span><br><span class="line"> [Command-Response Delta: 1630.81ms]</span><br><span class="line"></span><br><span class="line">> 1278 48.812485 host controller HCI_CMD 6 Sent Authentication Requested</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Authentication Requested</span><br><span class="line"> Command Opcode: Authentication Requested (0x0411)</span><br><span class="line"> Parameter Total Length: 2</span><br><span class="line"> Connection Handle: 0x0033</span><br><span class="line"> [Pending in frame: 1279]</span><br><span class="line"> [Command-Pending Delta: 0.945ms]</span><br><span class="line"> [Response in frame: 1283]</span><br><span class="line"> [Command-Response Delta: 16.693ms]</span><br><span class="line"></span><br><span class="line">> 1280 48.813892 controller host HCI_EVT 9 Rcvd Link Key Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Link Key Request</span><br><span class="line"> Event Code: Link Key Request (0x17)</span><br><span class="line"> Parameter Total Length: 6</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"></span><br><span class="line">> 1281 48.814039 host controller HCI_CMD 26 Sent Link Key Request Reply</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Link Key Request Reply</span><br><span class="line"> Command Opcode: Link Key Request Reply (0x040b)</span><br><span class="line"> Parameter Total Length: 22</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Link Key: 2160acf6b7403a97050f64de72570b1d</span><br><span class="line"> [Response in frame: 1282]</span><br><span class="line"> [Command-Response Delta: 1.336ms]</span><br><span class="line"></span><br><span class="line">> 1282 48.815375 controller host HCI_EVT 13 Rcvd Command Complete (Link Key Request Reply)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Command Complete</span><br><span class="line"> Event Code: Command Complete (0x0e)</span><br><span class="line"> Parameter Total Length: 10</span><br><span class="line"> Number of Allowed Command Packets: 1</span><br><span class="line"> Command Opcode: Link Key Request Reply (0x040b)</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> [Command in frame: 1281]</span><br><span class="line"> [Command-Response Delta: 1.336ms]</span><br><span class="line"></span><br><span class="line">> 1283 48.829178 controller host HCI_EVT 6 Rcvd Authentication Complete</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Authentication Complete</span><br><span class="line"> Event Code: Authentication Complete (0x06)</span><br><span class="line"> Parameter Total Length: 3</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> Connection Handle: 0x0033</span><br><span class="line"> [Command in frame: 1278]</span><br><span class="line"> [Pending in frame: 1279]</span><br><span class="line"> [Pending-Response Delta: 15.748ms]</span><br><span class="line"> [Command-Response Delta: 16.693ms]</span><br><span class="line"></span><br></pre></td></tr></table></figure></li>
</ul>
<h5 id="被连接"><a href="#被连接" class="headerlink" title="被连接"></a>被连接</h5><ul>
<li><p><strong>Host</strong>:</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">LocalBluetoothManager.getInstance().getEventManager().registerCallback(<span class="keyword">new</span> <span class="title class_">BluetoothCallback</span>() {</span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">onConnectionStateChanged</span><span class="params">(CachedBluetoothDevice cachedDevice, <span class="type">int</span> bondState)</span> {</span><br><span class="line"> }</span><br><span class="line">});</span><br></pre></td></tr></table></figure>
</li>
<li><p><strong>Controller</strong>:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br></pre></td><td class="code"><pre><span class="line">> 1900 62.151696 controller host HCI_EVT 13 Rcvd Connect Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Connect Request</span><br><span class="line"> Event Code: Connect Request (0x04)</span><br><span class="line"> Parameter Total Length: 10</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Class of Device: 0x5a020c (Phone:Smartphone - services: Networking Capturing ObjectTransfer Telephony)</span><br><span class="line"> Link Type: ACL connection (Data Channels) (0x01)</span><br><span class="line"></span><br><span class="line">> 1901 62.152042 host controller HCI_CMD 11 Sent Accept Connection Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Accept Connection Request</span><br><span class="line"> Command Opcode: Accept Connection Request (0x0409)</span><br><span class="line"> Parameter Total Length: 7</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Role: Remain the Slave for this connection. The LM will NOT perform the role switch. (0x01)</span><br><span class="line"> [Pending in frame: 1902]</span><br><span class="line"> [Command-Pending Delta: 0.748ms]</span><br><span class="line"> [Response in frame: 1903]</span><br><span class="line"> [Command-Response Delta: 4.455ms]</span><br><span class="line"></span><br><span class="line">> 1903 62.156497 controller host HCI_EVT 14 Rcvd Connect Complete</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Connect Complete</span><br><span class="line"> Event Code: Connect Complete (0x03)</span><br><span class="line"> Parameter Total Length: 11</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> Connection Handle: 0x0032</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Link Type: ACL connection (Data Channels) (0x01)</span><br><span class="line"> Encryption Mode: Encryption Disabled (0x00)</span><br><span class="line"> [Command in frame: 1901]</span><br><span class="line"> [Pending in frame: 1902]</span><br><span class="line"> [Pending-Response Delta: 3.707ms]</span><br><span class="line"> [Command-Response Delta: 4.455ms]</span><br><span class="line"></span><br><span class="line">> 1968 62.415419 controller host HCI_EVT 9 Rcvd Link Key Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Link Key Request</span><br><span class="line"> Event Code: Link Key Request (0x17)</span><br><span class="line"> Parameter Total Length: 6</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"></span><br><span class="line">> 1969 62.415629 host controller HCI_CMD 26 Sent Link Key Request Reply</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Link Key Request Reply</span><br><span class="line"> Command Opcode: Link Key Request Reply (0x040b)</span><br><span class="line"> Parameter Total Length: 22</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Link Key: 2160acf6b7403a97050f64de72570b1d</span><br><span class="line"> [Response in frame: 1971]</span><br><span class="line"> [Command-Response Delta: 0.934ms]</span><br><span class="line"></span><br><span class="line">> 1971 62.416563 controller host HCI_EVT 13 Rcvd Command Complete (Link Key Request Reply)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Command Complete</span><br><span class="line"> Event Code: Command Complete (0x0e)</span><br><span class="line"> Parameter Total Length: 10</span><br><span class="line"> Number of Allowed Command Packets: 1</span><br><span class="line"> Command Opcode: Link Key Request Reply (0x040b)</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> [Command in frame: 1969]</span><br><span class="line"> [Command-Response Delta: 0.934ms]</span><br><span class="line"></span><br></pre></td></tr></table></figure></li>
</ul>
<h3 id="SCO"><a href="#SCO" class="headerlink" title="SCO"></a>SCO</h3><blockquote>
<p>BLUETOOTH SPECIFICATION Version 4.2 [Vol 1, Part A] page 64 </p>
<p>The synchronous connection-oriented (SCO) logical transport is a symmetric,<br>point-to-point transport between the master and a specific slave. The SCO<br>logical transport reserves slots on the physical channel and can therefore be<br>considered as a circuit-switched connection between the master and the slave.<br>SCO logical transports carry 64 kb/s of information synchronized with the<br>piconet clock. Typically this information is an encoded voice stream. Three<br>different SCO configurations exist, offering a balance between robustness,<br>delay and bandwidth consumption. </p>
</blockquote>
<p>SCO全称<strong>BR/EDR Synchronous Connection-Oriented</strong>，利用保留时隙传送数据包。连接建立后，主设备和从设备可以不被选中就发送SCO数据包。SCO数据包既可以传送话音，也可以传送数据，但在传送数据时，只用于重发被损坏的那部分的数据。</p>
<h3 id="L2CAP"><a href="#L2CAP" class="headerlink" title="L2CAP"></a>L2CAP</h3><blockquote>
<p>BLUETOOTH SPECIFICATION Version 4.2 [Vol 3, Part A] page 30 </p>
<p>L2CAP（Logical Link Control and Adaptation Protocol）：逻辑链路控制与适配协议，将ACL数据分组交换为便于高层应用的数据分组格式，并提供协议复用和服务质量交换等功能。</p>
<p>通过协议多路复用、分段重组操作和组概念,向高层提供面向连接的和无连接的数据服务,L2CAP还屏蔽了低层传输协议中的很多特性，使得高层协议应用开发人员可以不必了解基层协议而进行开发。</p>
</blockquote>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV6sKg.png"></p>
<p>从架构图可以看出，L2CAP位于HCI与上层业务之间，在建立物理连接(ACL)之后，上层业务的通信和控制都由L2CAP协议与微微网(piconet )中其它蓝牙设备进行交互，类似HTTP协议的存在。</p>
<p>下图概括了两个设备L2CAP之间的连接过程：</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV6UUI.png"></p>
<h3 id="SDP"><a href="#SDP" class="headerlink" title="SDP"></a>SDP</h3><blockquote>
<p>BLUETOOTH SPECIFICATION Version 4.2 [Vol 3, Part B] page 222 </p>
<p>The service discovery mechanism provides the means for client applications to<br>discover the existence of services provided by server applications as well as<br>the attributes of those services. The attributes of a service include the type or<br>class of service offered and the mechanism or protocol information needed to<br>utilize the service. </p>
</blockquote>
<p>全称是<strong>Service Discovery Protocol</strong>，服务发现协议，服务发现协议(SDP)为应用程序提供了一种方法来发现哪些服务可用，并确定这些可用服务的特征。</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV66bj.png"></p>
<p>从上图可知蓝牙设备中同时存在一个Client和Server，通过L2CAP协议与别的设备时行交互，通过<code>Service Search Attribute Request </code>命令查询对方设备支持的蓝牙服务，其工作流程如图：</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV6a5t.png"></p>
<p>通过HCI可以看到发现蓝牙服务过过程中的数据：</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br></pre></td><td class="code"><pre><span class="line">> 455 22.824346 localhost () XiaomiCo_6e:38:c5 (PHONE) SDP 29 Sent Service Search Attribute Request : L2CAP: Attribute Range (0x0000 - 0xffff) </span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Frame 455: 29 bytes on wire (232 bits), 29 bytes captured (232 bits)</span><br><span class="line">Bluetooth</span><br><span class="line">Bluetooth HCI H4</span><br><span class="line">Bluetooth HCI ACL Packet</span><br><span class="line">Bluetooth L2CAP Protocol</span><br><span class="line">Bluetooth SDP Protocol</span><br><span class="line"> PDU: Service Search Attribute Request (0x06)</span><br><span class="line"> Transaction Id: 0x0000</span><br><span class="line"> Parameter Length: 15</span><br><span class="line"> Service Search Pattern: L2CAP</span><br><span class="line"> Maximum Attribute Byte Count: 1008</span><br><span class="line"> Attribute ID List</span><br><span class="line"> Data Element: Sequence uint8 5 bytes</span><br><span class="line"> 0011 0... = Data Element Type: Sequence (6)</span><br><span class="line"> .... .101 = Data Element Size: uint8 (5)</span><br><span class="line"> Data Element Var Size: 5</span><br><span class="line"> Data Value</span><br><span class="line"> Data Element: Unsigned Integer 4 bytes</span><br><span class="line"> 0000 1... = Data Element Type: Unsigned Integer (1)</span><br><span class="line"> .... .010 = Data Element Size: 4 bytes (2)</span><br><span class="line"> Data Value</span><br><span class="line"> Attribute Range: 0x0000ffff</span><br><span class="line"> Attribute Range From: 0x0000</span><br><span class="line"> Attribute Range To: 0xffff</span><br><span class="line"> Continuation State: no (00)</span><br><span class="line"></span><br><span class="line">> 471 22.896191 XiaomiCo_6e:38:c5 (PHONE) localhost () SDP 281 Rcvd Service Search Attribute Response</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Frame 471: 281 bytes on wire (2248 bits), 281 bytes captured (2248 bits)</span><br><span class="line">Bluetooth</span><br><span class="line">Bluetooth HCI H4</span><br><span class="line">Bluetooth HCI ACL Packet</span><br><span class="line">Bluetooth L2CAP Protocol</span><br><span class="line">Bluetooth SDP Protocol</span><br><span class="line"> PDU: Service Search Attribute Response (0x07)</span><br><span class="line"> Transaction Id: 0x0001</span><br><span class="line"> Parameter Length: 267</span><br><span class="line"> Attribute List Byte Count: 264</span><br><span class="line"> Data Fragment</span><br><span class="line"> Continuation State: no (00)</span><br><span class="line"> [Reassembled Attribute List]</span><br><span class="line"> Attribute Lists [count = 14]</span><br><span class="line"> Data Element: Sequence uint16 1269 bytes</span><br><span class="line"> 0011 0... = Data Element Type: Sequence (6)</span><br><span class="line"> .... .110 = Data Element Size: uint16 (6)</span><br><span class="line"> Data Element Var Size: 1269</span><br><span class="line"> Data Value</span><br><span class="line"> Attribute List [count = 4] (Generic Attribute Profile)</span><br><span class="line"> Attribute List [count = 4] (Generic Access Profile)</span><br><span class="line"> Attribute List [count = 6] (Headset Audio Gateway)</span><br><span class="line"> Attribute List [count = 8] (Handsfree Audio Gateway)</span><br><span class="line"> Attribute List [count = 8] (A/V Remote Control Target)</span><br><span class="line"> Attribute List [count = 7] (Audio Source)</span><br><span class="line"> Attribute List [count = 11] (PAN NAP)</span><br><span class="line"> Attribute List [count = 9] (PAN PANU)</span><br><span class="line"> Attribute List [count = 7] (Phonebook Access Server)</span><br><span class="line"> Attribute List [count = 10] (Message Access Server)</span><br><span class="line"> Attribute List [count = 4] (Xiaomi Inc.)</span><br><span class="line"> Attribute List [count = 5] (CustomUUID: Unknown)</span><br><span class="line"> Attribute List [count = 8] (OBEX Object Push)</span><br><span class="line"> Attribute List [count = 4] (Unknown)</span><br></pre></td></tr></table></figure>
<h1 id="蓝牙电话"><a href="#蓝牙电话" class="headerlink" title="蓝牙电话"></a>蓝牙电话</h1><h2 id="PBAP-RFCOMM-x2F-OBEX"><a href="#PBAP-RFCOMM-x2F-OBEX" class="headerlink" title="PBAP(RFCOMM/OBEX)"></a>PBAP(RFCOMM/OBEX)</h2><blockquote>
<p>RFCOMM协议提供了对L2CAP协议上的串行端口的模拟。该协议基于ETSI标准GSM 07.10。</p>
<p>OBEX：Object Exchange的简称，对象交换协议，来源于红外通讯协议，但又不局限于具体的传输方式，后来被蓝牙组织SIG吸纳其中部分并进行优化处理作为蓝牙协议中的OBEX层用于蓝牙设备间的文件数据传输，如蓝牙传输文件（OPP）、同步电话簿（PBAP）和同步短信（MAP）等场景下都是以OBEX协议组织相关数据进行传输的。</p>
</blockquote>
<p>PBAP: Phone Book Access Profile的简称，<strong>电话本访问协议</strong>，用于同步手机这些具有电话本功能设备上的通讯录和通话记录等。</p>
<p>RFCOMM/OBEX和协议不属于蓝牙定义的规范 ，只是被蓝牙采纳，而PBAP协议包在OBEX协议之上封装而成。</p>
<h3 id="PBAP虚拟文件夹架构"><a href="#PBAP虚拟文件夹架构" class="headerlink" title="PBAP虚拟文件夹架构"></a>PBAP虚拟文件夹架构</h3><p>PBAP中通话数据文件是在虚拟文件夹架构下，访问通话数据时需要指定路径，下图为官方架构图：</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV6yrQ.png"></p>
<p>其中vcf的文件名称意义如下：</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV6gVs.png"></p>
<h3 id="建立连接-x2F-断开连接"><a href="#建立连接-x2F-断开连接" class="headerlink" title="建立连接/断开连接"></a>建立连接/断开连接</h3><p>只使用OBEX协议</p>
<h4 id="连接-1"><a href="#连接-1" class="headerlink" title="连接"></a>连接</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br></pre></td><td class="code"><pre><span class="line">> 798 23.907353 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 40 Sent Connect - Phone Book Access Profile</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Frame 798: 40 bytes on wire (320 bits), 40 bytes captured (320 bits)</span><br><span class="line">Bluetooth</span><br><span class="line">Bluetooth HCI H4</span><br><span class="line">Bluetooth HCI ACL Packet</span><br><span class="line">Bluetooth L2CAP Protocol</span><br><span class="line">Bluetooth RFCOMM Protocol</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: ?]</span><br><span class="line"> .000 0000 = Opcode: Connect (0x00)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 26</span><br><span class="line"> [Response in Frame: 803]</span><br><span class="line"> Version: 1.0 (0x10)</span><br><span class="line"> Flags: 0x00</span><br><span class="line"> Max. Packet Length: 65534</span><br><span class="line"> Headers</span><br><span class="line"> Target: Phone Book Access Profile</span><br><span class="line"> Header Id: Target (0x46)</span><br><span class="line"> Length: 19</span><br><span class="line"> Value: 796135f0f0c511d809660800200c9a66: Phone Book Access Profile</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">> 803 23.917550 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 45 Rcvd Success - Phone Book Access Profile</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Frame 803: 45 bytes on wire (360 bits), 45 bytes captured (360 bits)</span><br><span class="line">Bluetooth</span><br><span class="line">Bluetooth HCI H4</span><br><span class="line">Bluetooth HCI ACL Packet</span><br><span class="line">Bluetooth L2CAP Protocol</span><br><span class="line">Bluetooth RFCOMM Protocol</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> .010 0000 = Response Code: Success (0x20)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 31</span><br><span class="line"> [Request in Frame: 798]</span><br><span class="line"> Version: 1.0 (0x10)</span><br><span class="line"> Flags: 0x00</span><br><span class="line"> Max. Packet Length: 65534</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> Who: Phone Book Access Profile</span><br><span class="line"> Header Id: Who (0x4a)</span><br><span class="line"> Length: 19</span><br><span class="line"> Value: 796135f0f0c511d809660800200c9a66: Phone Book Access Profile</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<h4 id="断开"><a href="#断开" class="headerlink" title="断开"></a>断开</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br></pre></td><td class="code"><pre><span class="line">> 1142 58.752933 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 22 Sent Disconnect</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> .000 0001 = Opcode: Disconnect (0x01)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 8</span><br><span class="line"> [Response in Frame: 1164]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"></span><br><span class="line">> 1164 59.162598 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 22 Rcvd Success</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> .010 0000 = Response Code: Success (0x20)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 8</span><br><span class="line"> [Request in Frame: 1142]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br></pre></td></tr></table></figure>
<h3 id="设置访问虚拟文件夹路径"><a href="#设置访问虚拟文件夹路径" class="headerlink" title="设置访问虚拟文件夹路径"></a>设置访问虚拟文件夹路径</h3><p>在[PBAP协议规范]的<code>5.2 SetPhoneBook Function</code>章节，使用OBEX协议SetPath命令，通过obex.opcode=<strong>0x05</strong>判断。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br></pre></td><td class="code"><pre><span class="line"># $/</span><br><span class="line">> 808 24.023528 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 27 Sent Set Path ""</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> .000 0101 = Opcode: Set Path (0x05)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 13</span><br><span class="line"> [Response in Frame: 810]</span><br><span class="line"> Flags: 0x02</span><br><span class="line"> .... ...0 = Go back one folder (../) first: False</span><br><span class="line"> .... ..1. = Do not create folder, if not existing: True</span><br><span class="line"> Constants: 0x00</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> Name: ""</span><br><span class="line"> Header Id: Name (0x01)</span><br><span class="line"> Length: 3</span><br><span class="line"> Name: </span><br><span class="line"></span><br><span class="line">> 810 24.065127 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 22 Rcvd Success</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> .010 0000 = Response Code: Success (0x20)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 8</span><br><span class="line"> [Request in Frame: 808]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"></span><br><span class="line"># $/telecom/</span><br><span class="line">> 811 24.078180 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 43 Sent Set Path "telecom"</span><br></pre></td></tr></table></figure>
<h3 id="获取通讯录数量"><a href="#获取通讯录数量" class="headerlink" title="获取通讯录数量"></a>获取通讯录数量</h3><p>在[PBAP协议规范]的<code>5.3 PullvCardListing Function</code>章节，通过obex.header=**<x-bt/vcard-listing>**判断。</p>
<h4 id="手机"><a href="#手机" class="headerlink" title="手机"></a>手机</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br></pre></td><td class="code"><pre><span class="line">> 808 24.023528 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 27 Sent Set Path ""</span><br><span class="line">> 811 24.078180 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 43 Sent Set Path "telecom"</span><br><span class="line"># $/telecom/pb/</span><br><span class="line">> 816 24.118267 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 70 Sent Get final "pb"</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /telecom]</span><br><span class="line"> .000 0011 = Opcode: Get (0x03)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 56</span><br><span class="line"> [Response in Frame: 818]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> Name: "pb"</span><br><span class="line"> Header Id: Name (0x01)</span><br><span class="line"> Length: 9</span><br><span class="line"> Name: pb</span><br><span class="line"> Type: "x-bt/vcard-listing"</span><br><span class="line"> Header Id: Type (0x42)</span><br><span class="line"> Length: 22</span><br><span class="line"> Type: x-bt/vcard-listing</span><br><span class="line"> Application Parameters</span><br><span class="line"> Header Id: Application Parameters (0x4c)</span><br><span class="line"> Length: 17</span><br><span class="line"> Parameter: Order #排序规则: { Alphabetical | Indexed | Phonetical }</span><br><span class="line"> Parameter Id: Order (0x01)</span><br><span class="line"> Parameter Length: 1</span><br><span class="line"> Max List Count: Indexed (0x00)</span><br><span class="line"> Parameter: Search Attribute #搜索: {Name | Number | Sound } 与 SearchValue配合，默认为Name</span><br><span class="line"> Parameter Id: Search Attribute (0x03)</span><br><span class="line"> Parameter Length: 1</span><br><span class="line"> Search Attribute: Name (0x00)</span><br><span class="line"> Parameter: Max List Count #最大条目数</span><br><span class="line"> Parameter Id: Max List Count (0x04)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> Max List Count: 0 (0x0000)</span><br><span class="line"> Parameter: List Start Offset #偏移量</span><br><span class="line"> Parameter Id: List Start Offset (0x05)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> List Start Offset: 0 (0x0000)</span><br><span class="line"></span><br><span class="line">> 818 24.332995 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 29 Rcvd Success</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /telecom]</span><br><span class="line"> .010 0000 = Response Code: Success (0x20)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 15</span><br><span class="line"> [Request in Frame: 816]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> Application Parameters</span><br><span class="line"> Header Id: Application Parameters (0x4c)</span><br><span class="line"> Length: 7</span><br><span class="line"> Parameter: Phonebook Size</span><br><span class="line"> Parameter Id: Phonebook Size (0x08)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> Phonebook Size: 71 (0x0047)</span><br></pre></td></tr></table></figure>
<h4 id="SIM1"><a href="#SIM1" class="headerlink" title="SIM1"></a>SIM1</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br></pre></td><td class="code"><pre><span class="line">> 819 24.336294 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 27 Sent Set Path ""</span><br><span class="line">> 822 24.379640 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 27 Sent Set Path ""</span><br><span class="line">> 825 24.430836 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 37 Sent Set Path "SIM1"</span><br><span class="line">> 828 24.481559 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 43 Sent Set Path "telecom"</span><br><span class="line"># $/SIM1/telecom/pb/</span><br><span class="line">> 831 24.532312 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 70 Sent Get final "pb"</span><br><span class="line"></span><br><span class="line">> 833 24.578831 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 29 Rcvd Success</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /SIM1/telecom]</span><br><span class="line"> .010 0000 = Response Code: Success (0x20)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 15</span><br><span class="line"> [Request in Frame: 831]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> Application Parameters</span><br><span class="line"> Header Id: Application Parameters (0x4c)</span><br><span class="line"> Length: 7</span><br><span class="line"> Parameter: Phonebook Size</span><br><span class="line"> Parameter Id: Phonebook Size (0x08)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> Phonebook Size: 1 (0x0001)</span><br></pre></td></tr></table></figure>
<h3 id="获取通讯录"><a href="#获取通讯录" class="headerlink" title="获取通讯录"></a>获取通讯录</h3><p>在[PBAP协议规范]的<code>5.3 PullvCardListing Function</code>章节，通过obex.header=<strong><x-bt/phonebook></strong> 判断，分页获取vCard格式。</p>
<h4 id="手机-1"><a href="#手机-1" class="headerlink" title="手机"></a>手机</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br><span class="line">138</span><br><span class="line">139</span><br><span class="line">140</span><br><span class="line">141</span><br><span class="line">142</span><br><span class="line">143</span><br><span class="line">144</span><br><span class="line">145</span><br><span class="line">146</span><br><span class="line">147</span><br><span class="line">148</span><br><span class="line">149</span><br><span class="line">150</span><br><span class="line">151</span><br><span class="line">152</span><br><span class="line">153</span><br><span class="line">154</span><br><span class="line">155</span><br><span class="line">156</span><br><span class="line">157</span><br><span class="line">158</span><br><span class="line">159</span><br><span class="line">160</span><br><span class="line">161</span><br><span class="line">162</span><br><span class="line">163</span><br><span class="line">164</span><br><span class="line">165</span><br><span class="line">166</span><br><span class="line">167</span><br><span class="line">168</span><br><span class="line">169</span><br><span class="line">170</span><br></pre></td><td class="code"><pre><span class="line">> 834 24.580643 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 27 Sent Set Path ""</span><br><span class="line">#分页请求获取通讯录，从第1条数据开始，每页最多50条</span><br><span class="line">> 837 24.632264 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 97 Sent Get final "telecom/pb.vcf"</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> .000 0011 = Opcode: Get (0x03)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 83</span><br><span class="line"> [Response in Frame: 844]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> Name: "telecom/pb.vcf"</span><br><span class="line"> Header Id: Name (0x01)</span><br><span class="line"> Length: 33</span><br><span class="line"> Name: telecom/pb.vcf</span><br><span class="line"> Type: "x-bt/phonebook"</span><br><span class="line"> Header Id: Type (0x42)</span><br><span class="line"> Length: 18</span><br><span class="line"> Type: x-bt/phonebook</span><br><span class="line"> Application Parameters</span><br><span class="line"> Header Id: Application Parameters (0x4c)</span><br><span class="line"> Length: 24</span><br><span class="line"> Parameter: Max List Count #最大条目数,这里只读取50条</span><br><span class="line"> Parameter Id: Max List Count (0x04)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> Max List Count: 50 (0x0032)</span><br><span class="line"> Parameter: List Start Offset #偏移量，这是从第1条开始读取</span><br><span class="line"> Parameter Id: List Start Offset (0x05)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> List Start Offset: 1 (0x0001)</span><br><span class="line"> Parameter: Filter #用于指示所请求的vCard中包含的属性</span><br><span class="line"> Parameter Id: Filter (0x06)</span><br><span class="line"> Parameter Length: 8</span><br><span class="line"> Filter: 0x00000000</span><br><span class="line"> Filter: 0x008001af, vCard Version, Formatted Name, Structured Presentation of Name, Associated Image or Photo, Delivery Address, Telephone Number, Electronic Mail Address, Nickname</span><br><span class="line"> Parameter: Format #vCard文件格式版本，这是3.0</span><br><span class="line"> Parameter Id: Format (0x07)</span><br><span class="line"> Parameter Length: 1</span><br><span class="line"> Format: 3.0 (0x01)</span><br><span class="line"></span><br><span class="line">#传输数据片段</span><br><span class="line">> 839 24.764415 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 1004 Rcvd OBEX fragment</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Frame 839: 1004 bytes on wire (8032 bits), 1004 bytes captured (8032 bits)</span><br><span class="line">Bluetooth</span><br><span class="line">Bluetooth HCI H4</span><br><span class="line">Bluetooth HCI ACL Packet</span><br><span class="line">Bluetooth L2CAP Protocol</span><br><span class="line">Bluetooth RFCOMM Protocol</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> [Reassembled OBEX in frame: 844]</span><br><span class="line"> Data (990 bytes)</span><br><span class="line"></span><br><span class="line">...</span><br><span class="line">#传输成功</span><br><span class="line">> 844 24.794969 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 182 Rcvd Success (x-bt/phonebook)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> [6 OBEX Fragments (5117 bytes): #839(990), #840(990), #841(990), #842(990), #843(990), #844(167)] #6个数据片段，需要拼接对应Frame</span><br><span class="line"> .010 0000 = Response Code: Success (0x20)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 5117</span><br><span class="line"> [Request in Frame: 837]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> End Of Body</span><br><span class="line"> Header Id: End Of Body (0x49)</span><br><span class="line"> Length: 5109</span><br><span class="line"> Value: 424547494e3a56434152440d0a56455253494f4e3a332e300d0a4e3ae591a83be4baa6e6…</span><br><span class="line"> Line-based text data: x-bt/phonebook (320 lines)</span><br><span class="line"> BEGIN:VCARD\r\n</span><br><span class="line"> VERSION:3.0\r\n</span><br><span class="line"> N:张;三;;;\r\n</span><br><span class="line"> FN:张三\r\n</span><br><span class="line"> TEL;TYPE=CELL:22222222\r\n</span><br><span class="line"> END:VCARD\r\n</span><br><span class="line"> BEGIN:VCARD\r\n</span><br><span class="line"> VERSION:3.0\r\n</span><br><span class="line"> N:李四;;;;\r\n</span><br><span class="line"> FN:李四\r\n</span><br><span class="line"> TEL;TYPE=CELL:11111111\r\n</span><br><span class="line"> END:VCARD\r\n</span><br><span class="line"></span><br><span class="line">#请求获取vCard 3.0格式，并从第51条数据开始，最多50条</span><br><span class="line">> 847 24.875858 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 96 Sent Get final "telecom/pb.vcf"</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> .000 0011 = Opcode: Get (0x03)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 83</span><br><span class="line"> [Response in Frame: 850]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> Name: "telecom/pb.vcf"</span><br><span class="line"> Header Id: Name (0x01)</span><br><span class="line"> Length: 33</span><br><span class="line"> Name: telecom/pb.vcf</span><br><span class="line"> Type: "x-bt/phonebook"</span><br><span class="line"> Header Id: Type (0x42)</span><br><span class="line"> Length: 18</span><br><span class="line"> Type: x-bt/phonebook</span><br><span class="line"> Application Parameters</span><br><span class="line"> Header Id: Application Parameters (0x4c)</span><br><span class="line"> Length: 24</span><br><span class="line"> Parameter: Max List Count</span><br><span class="line"> Parameter Id: Max List Count (0x04)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> Max List Count: 50 (0x0032)</span><br><span class="line"> Parameter: List Start Offset</span><br><span class="line"> Parameter Id: List Start Offset (0x05)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> List Start Offset: 51 (0x0033)</span><br><span class="line"> Parameter: Filter</span><br><span class="line"> Parameter Id: Filter (0x06)</span><br><span class="line"> Parameter Length: 8</span><br><span class="line"> Filter: 0x00000000</span><br><span class="line"> Filter: 0x008001af, vCard Version, Formatted Name, Structured Presentation of Name, Associated Image or Photo, Delivery Address, Telephone Number, Electronic Mail Address, Nickname</span><br><span class="line"> Parameter: Format</span><br><span class="line"> Parameter Id: Format (0x07)</span><br><span class="line"> Parameter Length: 1</span><br><span class="line"> Format: 3.0 (0x01)</span><br><span class="line"></span><br><span class="line">> 849 24.953425 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 1004 Rcvd OBEX fragment</span><br><span class="line"></span><br><span class="line"># 刚刚通过`Sent Get final "pb"`获取手机通讯录只有71条，现在只剩下21，这次就可以传输完成。</span><br><span class="line">> 850 24.960363 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 940 Rcvd Success (x-bt/phonebook)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> [2 OBEX Fragments (1915 bytes): #849(990), #850(925)]</span><br><span class="line"> .010 0000 = Response Code: Success (0x20)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 1915</span><br><span class="line"> [Request in Frame: 847]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> End Of Body</span><br><span class="line"> Header Id: End Of Body (0x49)</span><br><span class="line"> Length: 1907</span><br><span class="line"> Value: 424547494e3a56434152440d0a56455253494f4e3a332e300d0a4e3ae4bd993be4bf8ae7…</span><br><span class="line"> Line-based text data: x-bt/phonebook (122 lines)</span><br><span class="line"> BEGIN:VCARD\r\n</span><br><span class="line"> VERSION:3.0\r\n</span><br><span class="line"> N:张;三;;;\r\n</span><br><span class="line"> FN:张三\r\n</span><br><span class="line"> TEL;TYPE=CELL:22222222\r\n</span><br><span class="line"> END:VCARD\r\n</span><br><span class="line"> BEGIN:VCARD\r\n</span><br><span class="line"> VERSION:3.0\r\n</span><br><span class="line"> N:李四;;;;\r\n</span><br><span class="line"> FN:李四\r\n</span><br><span class="line"> TEL;TYPE=CELL:11111111\r\n</span><br><span class="line"> END:VCARD\r\n</span><br></pre></td></tr></table></figure>
<h4 id="SIM1-1"><a href="#SIM1-1" class="headerlink" title="SIM1"></a>SIM1</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br></pre></td><td class="code"><pre><span class="line">> 866 25.021131 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 107 Sent Get final "SIM1/telecom/pb.vcf"</span><br><span class="line">#这里手机直接拒绝了</span><br><span class="line">> 868 25.032728 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 25 Rcvd Success</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> .010 0000 = Response Code: Success (0x20)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 11</span><br><span class="line"> [Request in Frame: 866]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> End Of Body</span><br><span class="line"> Header Id: End Of Body (0x49)</span><br><span class="line"> Length: 3</span><br><span class="line"> Value: <MISSING></span><br></pre></td></tr></table></figure>
<h3 id="获取通话记录"><a href="#获取通话记录" class="headerlink" title="获取通话记录"></a>获取通话记录</h3><p>在[PBAP协议规范]的<code>5.3 PullvCardListing Function</code>章节，通过obex.header=<strong><x-bt/phonebook></strong> 判断，分页获取vCard格式。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br></pre></td><td class="code"><pre><span class="line">> 869 25.071027 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 27 Sent Set Path ""</span><br><span class="line">> 882 25.125323 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 43 Sent Set Path "telecom"</span><br><span class="line"># $/telecom/cch/</span><br><span class="line">> 887 25.138796 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 72 Sent Get final "cch"</span><br><span class="line">> 895 25.222650 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 29 Rcvd Success</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /telecom]</span><br><span class="line"> .010 0000 = Response Code: Success (0x20)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 15</span><br><span class="line"> [Request in Frame: 887]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> Application Parameters</span><br><span class="line"> Header Id: Application Parameters (0x4c)</span><br><span class="line"> Length: 7</span><br><span class="line"> Parameter: Phonebook Size</span><br><span class="line"> Parameter Id: Phonebook Size (0x08)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> Phonebook Size: 2177 (0x0881)</span><br><span class="line"></span><br><span class="line">> 897 25.225643 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 27 Sent Set Path ""</span><br><span class="line">#分页获取通话记录，从第0条开始，每页最多50条</span><br><span class="line">> 919 25.279427 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 85 Sent Get final "telecom/cch.vcf"</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> .000 0011 = Opcode: Get (0x03)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 71</span><br><span class="line"> [Response in Frame: 935]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> Name: "telecom/cch.vcf"</span><br><span class="line"> Header Id: Name (0x01)</span><br><span class="line"> Length: 35</span><br><span class="line"> Name: telecom/cch.vcf</span><br><span class="line"> Type: "x-bt/phonebook"</span><br><span class="line"> Header Id: Type (0x42)</span><br><span class="line"> Length: 18</span><br><span class="line"> Type: x-bt/phonebook</span><br><span class="line"> Application Parameters</span><br><span class="line"> Header Id: Application Parameters (0x4c)</span><br><span class="line"> Length: 10</span><br><span class="line"> Parameter: Max List Count</span><br><span class="line"> Parameter Id: Max List Count (0x04)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> Max List Count: 50 (0x0032)</span><br><span class="line"> Parameter: Format</span><br><span class="line"> Parameter Id: Format (0x07)</span><br><span class="line"> Parameter Length: 1</span><br><span class="line"> Format: 3.0 (0x01)</span><br><span class="line">> 935 25.381127 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 132 Rcvd Success (x-bt/phonebook)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> [8 OBEX Fragments (7048 bytes): #926(990), #927(990), #928(990), #929(990), #930(990), #931(990), #934(990), #935(118)]</span><br><span class="line"> .010 0000 = Response Code: Success (0x20)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 7048</span><br><span class="line"> [Request in Frame: 919]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> End Of Body</span><br><span class="line"> Header Id: End Of Body (0x49)</span><br><span class="line"> Length: 7040</span><br><span class="line"> Value: 424547494e3a56434152440d0a56455253494f4e3a332e300d0a464e3a0d0a4e3a0d0a54…</span><br><span class="line"> Line-based text data: x-bt/phonebook (350 lines)</span><br><span class="line"> BEGIN:VCARD\r\n</span><br><span class="line"> VERSION:3.0\r\n</span><br><span class="line"> FN:\r\n</span><br><span class="line"> N:\r\n</span><br><span class="line"> TEL;TYPE=0:10086\r\n</span><br><span class="line"> X-IRMC-CALL-DATETIME;TYPE=DIALED:20220317T161710\r\n</span><br><span class="line"> END:VCARD\r\n</span><br><span class="line"> BEGIN:VCARD\r\n</span><br><span class="line"> VERSION:3.0\r\n</span><br><span class="line"> FN:\r\n</span><br><span class="line"> N:\r\n</span><br><span class="line"> TEL;TYPE=0:02310050\r\n</span><br><span class="line"> X-IRMC-CALL-DATETIME;TYPE=MISSED:20220316T160142\r\n</span><br><span class="line"> END:VCARD\r\n</span><br><span class="line"></span><br><span class="line">#分页获取通话记录，从第50条开始，每页最多50条</span><br><span class="line">936 25.423573 localhost () XiaomiCo_6e:38:c5 (PHONE) OBEX 89 Sent Get final "telecom/cch.vcf"</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">OBEX Protocol</span><br><span class="line"> [Profile: PBAP (4)]</span><br><span class="line"> [Current Path: /]</span><br><span class="line"> .000 0011 = Opcode: Get (0x03)</span><br><span class="line"> 1... .... = Final Flag: True</span><br><span class="line"> Packet Length: 75</span><br><span class="line"> [Response in Frame: 947]</span><br><span class="line"> Headers</span><br><span class="line"> Connection Id: 1</span><br><span class="line"> Header Id: Connection Id (0xcb)</span><br><span class="line"> Connection ID: 1</span><br><span class="line"> Name: "telecom/cch.vcf"</span><br><span class="line"> Header Id: Name (0x01)</span><br><span class="line"> Length: 35</span><br><span class="line"> Name: telecom/cch.vcf</span><br><span class="line"> Type: "x-bt/phonebook"</span><br><span class="line"> Header Id: Type (0x42)</span><br><span class="line"> Length: 18</span><br><span class="line"> Type: x-bt/phonebook</span><br><span class="line"> Application Parameters</span><br><span class="line"> Header Id: Application Parameters (0x4c)</span><br><span class="line"> Length: 14</span><br><span class="line"> Parameter: Max List Count</span><br><span class="line"> Parameter Id: Max List Count (0x04)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> Max List Count: 50 (0x0032)</span><br><span class="line"> Parameter: List Start Offset</span><br><span class="line"> Parameter Id: List Start Offset (0x05)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> List Start Offset: 50 (0x0032)</span><br><span class="line"> Parameter: Format</span><br><span class="line"> Parameter Id: Format (0x07)</span><br><span class="line"> Parameter Length: 1</span><br><span class="line"> Format: 3.0 (0x01)</span><br><span class="line">> 947 25.516478 XiaomiCo_6e:38:c5 (PHONE) localhost () OBEX 810 Rcvd Success (x-bt/phonebook)</span><br></pre></td></tr></table></figure>
<h2 id="HFP-RFCOMM"><a href="#HFP-RFCOMM" class="headerlink" title="HFP(RFCOMM)"></a>HFP(RFCOMM)</h2><blockquote>
<p>HFP(Hands-free Profile)，让蓝牙设备可以控制电话，如接听、挂断、拒接、语音拨号等，拒接、语音拨号要视蓝牙耳机及电话是否支持。</p>
<p>目前HFP的使用场景有车载蓝牙，耳机和PDA，定义了AG和HFP两种角色。<br>AG（Audio Gate）音频网关—音频设备输入输出网关<br>HF（Hands Free）免提—该设备作为音频网关的远程音频输入/输出机制，并可提供若干遥控功能。</p>
</blockquote>
<p>在车载蓝牙中，<strong>手机侧是AG</strong>，<strong>车载蓝牙侧是HF</strong>，在android源代码中，将AG侧称为HFP/AG，将HF侧称为HFPClient/HF。</p>
<h3 id="AT命令"><a href="#AT命令" class="headerlink" title="AT命令"></a>AT命令</h3><p>在HFP使用AT命令控制电话，其参考3GPP 27.007标准，命令规范为：</p>
<ul>
<li><p>每个命令行只有一个命令</p>
</li>
<li><p>AG侧默认不回显命令</p>
</li>
<li><p>AG使用冗长的格式返回结果</p>
</li>
<li><p>以下字符将被用于AT命令和返回结果格式中</p>
<ul>
<li><p><code><cr></code> 表示回车，也就是<code>\r</code>字符</p>
</li>
<li><p><code> <lf></code>表示换行，也就是<code>\n</code>字符</p>
</li>
</ul>
</li>
<li><p>从HF发送到AG的命令格式是：<code><AT command> <cr></code></p>
</li>
<li><p>从AG返回给HF的OK命令格式是：<code><cr><lf>OK<cr><lf></code></p>
</li>
<li><p>从AG到HF的ERROR命令是：<code><cr><lf>ERROR<cr><lf></code></p>
</li>
<li><p>从AG到HF的结果命令格式是：<code><cr><lf><result code><cr><lf></code></p>
</li>
</ul>
<p>HFP协议复用的AT命令：</p>
<ul>
<li><p>ATA：标准电话应答AT命令</p>
</li>
<li><p>ATDdd…dd;：用电话号码打电话</p>
</li>
<li><p>ATD>nnn…;：ATD扩展命令，记忆拨号</p>
</li>
<li><p>ERROR：错误指示符，语法，格式或者通信过程出错。</p>
</li>
<li><p>OK：命令的成功应答。</p>
</li>
<li><p>NO CARRIER, BUSY, NO ANSWER, DELAYED, BLACKLISTED：AT扩展命令，AG返回给HF。</p>
</li>
<li><p>RING：来电</p>
</li>
<li><p>AT+CCWA：calling waiting notification AT命令。AT+CCWA=<code>[<n>[,<mode>[,<class>]]]</code>，</p>
</li>
<li><p>+CCWA：Call Waiting notification返回结果码。只有<code><number></code>和<code><type></code>参数对HFP有意义，<code><number></code>是由双引号及其中的文本串组成。<code><type></code>是支持的电话格式，有如下值：</p>
<ul>
<li><p>128~143：国家或国际格式，</p>
</li>
<li><p>144~159：国际电话，包括国家码前缀。</p>
</li>
<li><p>160-175:国家码</p>
</li>
<li><p>AT+CHLD：通话保持，多方处理。AT+CHLD=<code><n></code>中<code><n></code>值覆盖0, 1, 1<code><idx></code>, 2, 2<code><idx></code>, 3 and 4,说明：</p>
<ul>
<li>0：释放所有保持电话或者设置用户的忙等待</li>
<li>1：释放正在通话的电话，接听保持或等待的电话</li>
<li>1<code><idx></code>:释放<code><idx></code>标识的电话</li>
<li>2：将所有活跃电话设置成保持并且接受其它电话。</li>
<li>2<code><idx></code>:请求接受<code><idx></code>标识电话，让其它电话保持。</li>
<li>3：增加一个保持电话到对话中</li>
<li>4：连接连个电话并且断开两个电话的订阅。HF侧可选。</li>
</ul>
</li>
<li><p>AT+CHLD=?：查询AG侧保持和多方会话。</p>
</li>
</ul>
</li>
<li><p>AT+CHUP：标准的挂断命令。AG会结束通话，也可用于拒接来电。</p>
</li>
<li><p>AT+CIND：<code>AT+CIND?</code>获取AG indicators当前的状态,`AT+CIND=?获取AG支持的indicator以及它们的次序。</p>
<ul>
<li>service: Service availability indication:<ul>
<li><code><value>=0</code> implies no service. No Home/Roam network available.</li>
<li><code><value>=1</code> implies presence of service. Home/Roam network available.</li>
</ul>
</li>
<li>call: Standard call status indicator: <ul>
<li><code><value>=0 </code>means there are no calls in progress </li>
<li><code><value>=1</code> means at least one call is in progress</li>
</ul>
</li>
<li>callsetup: Bluetooth proprietary call set up status indicator4. Support for this indicator is optional<br>for the HF. When supported, this indicator shall be used in conjunction with, and as an extension<br>of the standard call indicator. Possible values are as follows: <ul>
<li><code><value>=0</code> means not currently in call set up. </li>
<li><code><value>=1</code> means an incoming call process ongoing.</li>
<li><code><value>=2</code> means an outgoing call set up is ongoing. </li>
<li><code><value>=3</code> means remote party being alerted in an outgoing call.</li>
</ul>
</li>
<li>callheld: Bluetooth proprietary call hold status indicator. Support for this indicator is mandatory for<br>the AG, optional for the HF. Possible values are as follows: <ul>
<li>0= No calls held </li>
<li>1= Call is placed on hold or active/held calls swapped<br>(The AG has both an active AND a held call) </li>
<li>Call on hold, no active call</li>
</ul>
</li>
<li>signal: Signal Strength indicator: <ul>
<li><code><value>= </code>ranges from 0 to 5</li>
</ul>
</li>
<li>roam: Roaming status indicator: <ul>
<li><code><value>=0</code> means roaming is not active </li>
<li><code><value>=1</code> means a roaming is active</li>
</ul>
</li>
<li>battchg: Battery Charge indicator of AG: <ul>
<li><code><value>=</code>ranges from 0 to 5</li>
</ul>
</li>
</ul>
</li>
<li><p>+CIND：当前indicator的列表</p>
</li>
<li><p>AT+CLCC：列出当前电话命令，</p>
</li>
<li><p>+CLCC：当前call结果码，支持参数是</p>
<ul>
<li><p>idx：表示建立连接顺序或者接听电话的数字（从1开始）。</p>
</li>
<li><p>dir：0（outgoing），1（incoming）</p>
</li>
<li><p>status：</p>
<ul>
<li><p>0=Active</p>
</li>
<li><p>1=Held</p>
</li>
<li><p>2=Dialing（outgoing calls only）</p>
</li>
<li><p>3=Alerting(outgoing calls only)</p>
</li>
<li><p>4=Incoming(incoming calls only)</p>
</li>
<li><p>5=Waiting(incoming calls only)</p>
</li>
<li><p>6 = Call held by Response and Hold</p>
</li>
</ul>
</li>
<li><p>mode= 0 (Voice), 1 (Data), 2 (FAX)</p>
</li>
<li><p>mpty=</p>
<ul>
<li>0 - this call is NOT a member of a multi-party (conference) call</li>
<li>1 - this call IS a member of a multi-party (conference) call</li>
</ul>
</li>
<li><p>number (optional)</p>
</li>
<li><p>type (optional)</p>
</li>
</ul>
</li>
<li><p>AT+COPS: AT+COPS=3,0将被HF发送给AG</p>
</li>
<li><p>AT+CMEE: 使能+CME ERROR: <err>结果码</p>
</li>
<li><p>+CME ERROR</p>
<ul>
<li>+CME ERROR: 0 – AG failure</li>
</ul>
</li>
<li><p>AT+CLIP: Calling Line Identification notification 使能命令，It enables/disables the Calling Line Identification notification unsolicited result code 。</p>
</li>
<li><p>+CLIP : Standard “Calling Line Identification notification” unsolicited result code. </p>
</li>
<li><p>AT+CMER :Standard event reporting activation/deactivation AT command. </p>
</li>
<li><p>+CIEV: “indicator events reporting”结果码。<code><ind></code>,<code><value></code> result code ，对应AT+CIND 返回的列表中的参数和值。</p>
</li>
<li><p>AT+VTS: DTMF生成命令。</p>
</li>
<li><p>AT+CNUM: HF相应<code>+CNUM</code>命令</p>
<ul>
<li>AT+CNUM (Retrieve Subscriber Number Information)</li>
<li>AT+CNUM=? (Test Subscriber Number Information – Not Implemented)</li>
</ul>
</li>
<li><p>+CNUM: 用于将“ Subscriber Number Information ”从AG发送到HF的标准响应。</p>
</li>
</ul>
<p>HFP协议扩展的AT命令：</p>
<ul>
<li>AT+BIA (Bluetooth Indicators Activation) </li>
<li>AT+BINP (Bluetooth INPut) </li>
<li>AT+BLDN (Bluetooth Last Dialed Number) </li>
<li>AT+BVRA (Bluetooth Voice Recognition Activation) </li>
<li>+BVRA (Bluetooth Voice Recognition Activation) </li>
<li>AT+BRSF (Bluetooth Retrieve Supported Features) </li>
<li>+BRSF (Bluetooth Retrieve Supported Features) </li>
<li>AT+NREC (Noise Reduction and Echo Canceling) </li>
<li>AT+VGM (Gain of Microphone) </li>
<li>AT+VGS (Gain of Speaker) </li>
<li>+VGM (Gain of Microphone) </li>
<li>+VGS (Gain of Speaker) </li>
<li>+BSIR (Bluetooth Setting of In-band Ring tone) </li>
<li>AT+BTRH (Bluetooth Response and Hold Feature) </li>
<li>+BTRH (Bluetooth Response and Hold Feature) </li>
<li>AT+BCC (Bluetooth Codec Connection) </li>
<li>AT+BCS (Bluetooth Codec Selection) </li>
<li>+BCS (Bluetooth Codec Selection) </li>
<li>AT+BAC (Bluetooth Available Codecs) </li>
<li>AT+BIND (Bluetooth HF Indicators Feature) </li>
<li>+BIND (Bluetooth HF Indicators Feature) </li>
<li>AT+BIEV (Bluetooth HF Indicators Feature)</li>
</ul>
<h3 id="建立服务连接"><a href="#建立服务连接" class="headerlink" title="建立服务连接"></a>建立服务连接</h3><blockquote>
<p>Upon a user action or an internal event, either the HF or the AG may initiate a <strong>Service Level Connection</strong><br><strong>establishment</strong> procedure.<br>A Service Level Connection establishment requires the existence of a RFCOMM connection, that is, a<br>RFCOMM data link channel between the HF and the AG.<br>Both the HF and the AG may initiate the RFCOMM connection establishment. If there is no RFCOMM<br>session between the AG and the HF, the initiating device shall first initialize RFCOMM. </p>
</blockquote>
<p>连接过程如下：</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV6DxS.png"></p>
<ol>
<li><p>支持能力交换<br>首先HF发送AT+BRSF=< HF supported features >给AG，目的是首先通知AG其具有的能力，其次接收AG返回的其自身的BRSF能力。</p>
</li>
<li><p>Codec协商<br>如果HF支持Codec Negotiation特征，其会查看AG返回的BRSF中是否也支持该特性，如果都支持该特性，则HF将发送AT+BAC=< HF available codecs >命令给AG以告知其可用的codec。</p>
</li>
<li><p>AG Indicator<br>HF从AG接收到的BRSF，可以知道AG支持的Indicator，并按顺序拍好，这是因为根据3GPP 27.007规范，AG可以支持Hands-Free不支持的profile。HF使用AT+CIND=?测试命令接收AG支持的indicator以及它们的次序。<br>当HF获得必须的Indicator和它们的次序，它将通过AT+CIND?命令取得AG端正在使用indicator的状态。<br>当HF取得AG的indicator后，HF会使用AT+CMER使能AG的indicator状态跟新功能，AG会返回OK作为应答。当service，call或者call建立状态发生时，AG将发送和indicator相关的+CIEV结果码给HF。HF根据收到的+CIEV码来跟新其自身内部的indicator。<br>AG侧会一直保持indicator状态跟新功能使能直到收到AT+CMER指示其关闭或者HF和AG端的Service Level Connection连接断开。<br>当HF使能AG的indicator状态跟新，如果AG和HF都支持呼叫等待（Call waiting）和3方通信（3-way calling）。HF将发送AT+CHLD=?测试命令取得AG是如何支持这种功能的。如果HF或者AG其中之一不支持三方通信，AT+CHLD=?命令不会被发送。</p>
</li>
<li><p>HF Indicator<br>如果HF支持HF indicator，其会查看AG是否支持HF indicator。<br>如果HF和AG支持HF indicator特性，HF将发送AT+BIND=< HF supported HF indicators >通知HF侧支持的indicator，AG以OK应答。<br>当AG接收到HF告知的HF indicator特性，HF将发送AT+BIND=?请求AG侧支持的HF indicator。AG将会以+BIND和以OK结尾的应答。<br>当HF接收到AG支持的HF indicator，HF将会发送AT+BIND?命令确定HF目前使能的HF indicator。AG将会一次或多次以+BIND应答和以OK结尾的应答。<br>至此HF可能发送AT+BIEV命令告知AG其使能的HF indicator发生变化。<br>AG可以使用+BIND使能或者禁止任何HF indicator。</p>
</li>
<li><p>End of Service Level Connection</p>
<ul>
<li><p>HF需要知道Service Level Connection被完全建立，这可以通过以下几个方式：</p>
<ul>
<li>当且仅当AG通过+BRSF命令告知HF其支持的<code>"HF indicator"</code>，在HF收到AG通过<strong>AT+BIND？</strong>命令发来的其支持的<code>"HF indicator"</code>可认为完全建立。</li>
<li>当且仅当SDP服务发现AH和AG双方均支持<code>"Call waiting and 3-way calling"</code>，在HFAG通过<strong>AT+CHLD</strong>命令发来的其对呼叫等待和多方电话的支持，对这种情况，<code>"HF indicator"</code>不要设置该比特位，AG也不要在+BRSF命令中设置该比特位。</li>
<li>在HF使用<strong>AT+CMER</strong>命令成功启用<code>“Indicator status update”</code>功能，对这种情况SDP服务不应该设置<code>“Call waiting and 3-way calling”</code>比特位。<br>如果HF收到AG通过indicator指示当前有电话时，HF查询AG的接听和保持状态来判断是否是未接听电话。</li>
</ul>
</li>
<li><p>同样AG侧Service Level Connection完全建立也有几种情况：</p>
<ul>
<li><p>当且仅当HF indicator在HF被设置且AG侧支持的indicator已经通过+BRSF命令应答，则AG以**+BIND加OK结尾**的命令应答其使能的HF indicator时可认为Service Level Connection完全建立。</p>
</li>
<li><p>当且仅当<code>“Call waiting and 3-way calling”</code>比特在HF和AG的SDP服务中被置位，在AG通过**+CHLD加OK结尾**命令成功响应其对呼叫保持和多方电话支持时SLC会被完全建立。对这种情况，+BRSF不应该设置该HF indicator比特位。</p>
</li>
<li><p>AG已成功<strong>响应OK到AT + CMER</strong>命令（启用<code>“Indicator status update”</code>功能。）当<code>“Call waiting and 3-way calling”</code>位时，应适用这种情况未在支持的功能位图中设置为HF或AG，以及<code>“HF Indicators ”</code>对于通过+ BRSF交换的HF或AG的支持功能位图中未设置位的位图命令。</p>
</li>
</ul>
</li>
</ul>
</li>
</ol>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br></pre></td><td class="code"><pre><span class="line">#判断是否支持"Call waiting and 3-way calling"</span><br><span class="line">#AG发现HF, hfP支持的协议,HF支持"Call waiting and 3-way calling"</span><br><span class="line">> 596 17.850811 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) SDP 36 Rcvd Service Search Attribute Request : Handsfree: [Service Class ID List 0x0001] [Protocol Descriptor List 0x0004] [Bluetooth Profile Descriptor List 0x0009] [(HFP HS) Supported Features 0x0311] </span><br><span class="line">> 597 17.851437 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) SDP 69 Sent Service Search Attribute Response </span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth SDP Protocol</span><br><span class="line"> PDU: Service Search Attribute Response (0x07)</span><br><span class="line"> Transaction Id: 0x0000</span><br><span class="line"> Parameter Length: 55</span><br><span class="line"> Attribute List Byte Count: 52</span><br><span class="line"> Attribute Lists [count = 1]</span><br><span class="line"> Data Element: Sequence uint8 50 bytes</span><br><span class="line"> 0011 0... = Data Element Type: Sequence (6)</span><br><span class="line"> .... .101 = Data Element Size: uint8 (5)</span><br><span class="line"> Data Element Var Size: 50</span><br><span class="line"> Data Value</span><br><span class="line"> Attribute List [count = 4] (Handsfree)</span><br><span class="line"> Data Element: Sequence uint16 47 bytes</span><br><span class="line"> 0011 0... = Data Element Type: Sequence (6)</span><br><span class="line"> .... .110 = Data Element Size: uint16 (6)</span><br><span class="line"> Data Element Var Size: 47</span><br><span class="line"> Data Value</span><br><span class="line"> Service Attribute: Service Class ID List (0x1), value = Handsfree -> Generic Audio</span><br><span class="line"> Service Attribute: Protocol Descriptor List (0x4), value = L2CAP -> RFCOMM:2</span><br><span class="line"> Service Attribute: Bluetooth Profile Descriptor List (0x9), value = Handsfree 1.6</span><br><span class="line"> Service Attribute: (HFP HS) Supported Features (0x311), value = (EC and/or Nr Function) (Call Waiting or Three Way Calling) (CLI Presentation Capability) (Voice Recognition Activation) (Remote Volume Control) (Wide Band Speech) </span><br><span class="line"> Continuation State: no (00)</span><br><span class="line"></span><br><span class="line">#HF发现AG, hfP支持的协议,AG不支持"Call waiting and 3-way calling"，只支持"3-way calling"</span><br><span class="line">> 637 18.017460 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) SDP 33 Sent Service Search Attribute Request : Handsfree Audio Gateway: [Service Class ID List 0x0001] [Bluetooth Profile Descriptor List 0x0009] [(HFP AG) Supported Features 0x0311] </span><br><span class="line">> 644 18.024689 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) SDP 52 Rcvd Service Search Attribute Response </span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth SDP Protocol</span><br><span class="line"> PDU: Service Search Attribute Response (0x07)</span><br><span class="line"> Transaction Id: 0x0000</span><br><span class="line"> Parameter Length: 38</span><br><span class="line"> Attribute List Byte Count: 35</span><br><span class="line"> Attribute Lists [count = 1]</span><br><span class="line"> Data Element: Sequence uint8 33 bytes</span><br><span class="line"> 0011 0... = Data Element Type: Sequence (6)</span><br><span class="line"> .... .101 = Data Element Size: uint8 (5)</span><br><span class="line"> Data Element Var Size: 33</span><br><span class="line"> Data Value</span><br><span class="line"> Attribute List [count = 3] (Handsfree Audio Gateway)</span><br><span class="line"> Data Element: Sequence uint16 30 bytes</span><br><span class="line"> 0011 0... = Data Element Type: Sequence (6)</span><br><span class="line"> .... .110 = Data Element Size: uint16 (6)</span><br><span class="line"> Data Element Var Size: 30</span><br><span class="line"> Data Value</span><br><span class="line"> Service Attribute: Service Class ID List (0x1), value = Handsfree Audio Gateway -> Generic Audio</span><br><span class="line"> Service Attribute: Bluetooth Profile Descriptor List (0x9), value = Handsfree 1.6</span><br><span class="line"> Service Attribute: (HFP AG) Supported Features (0x311), value = (Three Way Calling) (EC and/or Nr Function) (Voice Recognition Function) (Wide Band Speech) </span><br><span class="line"> Continuation State: no (00)</span><br><span class="line"></span><br><span class="line">#HFP建立连接</span><br><span class="line">#交换支持功能，AG和HF都不支持"HF indicator"</span><br><span class="line">> 634 18.012482 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) HFP 26 Sent AT+BRSF=255</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HFP Profile</span><br><span class="line"> [Role: HS - Headset (2)]</span><br><span class="line"> AT Stream: AT+BRSF=255\r</span><br><span class="line"> Command 0: +BRSF</span><br><span class="line"> Command Line Prefix: AT</span><br><span class="line"> Command: +BRSF (Bluetooth Retrieve Supported Features)</span><br><span class="line"> Type: Action Command (0x003d)</span><br><span class="line"> Parameters</span><br><span class="line"> HS supported features bitmask: 255</span><br><span class="line"> .... .... .... .... .... .... .... ...1 = EC and/or NR function: True</span><br><span class="line"> .... .... .... .... .... .... .... ..1. = Call waiting or 3-way calling: True</span><br><span class="line"> .... .... .... .... .... .... .... .1.. = CLI Presentation: True</span><br><span class="line"> .... .... .... .... .... .... .... 1... = Voice Recognition Activation: True</span><br><span class="line"> .... .... .... .... .... .... ...1 .... = Remote Volume Control: True</span><br><span class="line"> .... .... .... .... .... .... ..1. .... = Enhanced Call Status: True</span><br><span class="line"> .... .... .... .... .... .... .1.. .... = Enhanced Call Control: True</span><br><span class="line"> .... .... .... .... .... .... 1... .... = Codec Negotiation: True</span><br><span class="line"> .... .... .... .... .... ...0 .... .... = HF Indicators: False</span><br><span class="line"> .... .... .... .... .... ..0. .... .... = eSCO S4 (and T2) Settings Support: False</span><br><span class="line"> 0000 0000 0000 0000 0000 00.. .... .... = Reserved: 0x000000</span><br><span class="line">> 641 18.022446 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) HFP 28 Rcvd +BRSF: 871</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HFP Profile</span><br><span class="line"> [Role: AG - Audio Gate (1)]</span><br><span class="line"> AT Stream: \r\n+BRSF: 871\r\n</span><br><span class="line"> Command 0: +BRSF</span><br><span class="line"> Command: +BRSF (Bluetooth Retrieve Supported Features)</span><br><span class="line"> Type: Response (0x003a)</span><br><span class="line"> Parameters</span><br><span class="line"> AG supported features bitmask: 871</span><br><span class="line"> .... .... .... .... .... .... .... ...1 = Three Way Calling: True</span><br><span class="line"> .... .... .... .... .... .... .... ..1. = EC and/or NR function: True</span><br><span class="line"> .... .... .... .... .... .... .... .1.. = Voice Recognition Function: True</span><br><span class="line"> .... .... .... .... .... .... .... 0... = In-band Ring Tone: False</span><br><span class="line"> .... .... .... .... .... .... ...0 .... = Attach Number to Voice Tag: False</span><br><span class="line"> .... .... .... .... .... .... ..1. .... = Ability to Reject a Call: True</span><br><span class="line"> .... .... .... .... .... .... .1.. .... = Enhanced Call Status: True</span><br><span class="line"> .... .... .... .... .... .... 0... .... = Enhanced Call Control: False</span><br><span class="line"> .... .... .... .... .... ...1 .... .... = Extended Error Result Codes: True</span><br><span class="line"> .... .... .... .... .... ..1. .... .... = Codec Negotiation: True</span><br><span class="line"> .... .... .... .... .... .0.. .... .... = HF Indicators: False</span><br><span class="line"> .... .... .... .... .... 0... .... .... = eSCO S4 (and T2) Settings Support: False</span><br><span class="line"> 0000 0000 0000 0000 0000 .... .... .... = Reserved: 0x00000</span><br><span class="line"></span><br><span class="line">#AG和HF都支持"Codec Negotiation"，HF告知AG其可用的Codec编码(CVSD)</span><br><span class="line">> 643 18.023696 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) HFP 23 Sent AT+BAC=1</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HFP Profile</span><br><span class="line"> [Role: HS - Headset (2)]</span><br><span class="line"> AT Stream: AT+BAC=1\r</span><br><span class="line"> Command 0: +BAC</span><br><span class="line"> Command Line Prefix: AT</span><br><span class="line"> Command: +BAC (Bluetooth Available Codecs)</span><br><span class="line"> Type: Action Command (0x003d)</span><br><span class="line"> Parameters</span><br><span class="line"> Codec: CVSD (1)</span><br><span class="line"></span><br><span class="line">#获取AG支持的indicator以及它们的次序</span><br><span class="line">> 649 18.029340 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) HFP 24 Sent AT+CIND=? </span><br><span class="line">> 652 18.035680 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) HFP 147 Rcvd +CIND: ("CALL",(0,1)),("CALLSETUP",(0-3)),("SERVICE",(0-1)),("SIGNAL",(0-5)),("ROAM",(0,1)),("BATTCHG",(0-5)),("CALLHELD",(0-2)) </span><br><span class="line"></span><br><span class="line">#获取AG indicators当前的状态</span><br><span class="line">> 654 18.037547 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) HFP 23 Sent AT+CIND? </span><br><span class="line">> 656 18.092460 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) HFP 38 Rcvd +CIND: 0,0,1,5,0,2,0</span><br><span class="line"></span><br><span class="line">#标志HFP连接建立</span><br><span class="line">#启用"Indicator status update"</span><br><span class="line">> 658 18.093591 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) HFP 30 Sent AT+CMER=3,0,0,1</span><br><span class="line">> 660 18.117156 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) HFP 20 Rcvd OK </span><br></pre></td></tr></table></figure>
<h3 id="HF拨打-挂断电话"><a href="#HF拨打-挂断电话" class="headerlink" title="HF拨打\挂断电话"></a>HF拨打\挂断电话</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line">#HF拨打电话</span><br><span class="line">> 921 29.433324 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) HFP 24 Sent ATD10086; </span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HFP Profile</span><br><span class="line"> [Role: HS - Headset (2)]</span><br><span class="line"> AT Stream: ATD10086;\r</span><br><span class="line"> Command 0: D</span><br><span class="line"> Command Line Prefix: AT</span><br><span class="line"> Command: D (Dial)</span><br><span class="line"> [Expert Info (Warning/Protocol): Non mandatory type or command in this role]</span><br><span class="line"> Parameters: No</span><br><span class="line">> 924 30.778650 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) HFP 20 Rcvd OK</span><br><span class="line"></span><br><span class="line">#挂断电话</span><br><span class="line">> 965 37.723080 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) HFP 22 Sent AT+CHUP</span><br><span class="line">> 966 37.752000 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) HFP 20 Rcvd OK</span><br></pre></td></tr></table></figure>
<h3 id="HF获取通话电话列表"><a href="#HF获取通话电话列表" class="headerlink" title="HF获取通话电话列表"></a>HF获取通话电话列表</h3><p>会HF会轮询此命令</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line">> 925 30.779082 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) HFP 22 Sent AT+CLCC </span><br><span class="line">> 929 30.820871 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) HFP 46 Rcvd +CLCC: 1,0,2,0,0,"10086",129 </span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HFP Profile</span><br><span class="line"> [Role: AG - Audio Gate (1)]</span><br><span class="line"> AT Stream: \r\n+CLCC: 1,0,2,0,0,"10086",129\r\n</span><br><span class="line"> Command 0: +CLCC</span><br><span class="line"> Command: +CLCC (Current Calls)</span><br><span class="line"> Type: Response (0x003a)</span><br><span class="line"> Parameters</span><br><span class="line"> ID: 1</span><br><span class="line"> Direction: Mobile Originated (0)</span><br><span class="line"> State: Dialing (2)</span><br><span class="line"> Mode: Voice (0)</span><br><span class="line"> Mpty: Call is not one of multiparty (conference) call parties (0)</span><br><span class="line"> Number: "10086"</span><br><span class="line"> Type: The phone number format may be a national or international format, and may contain prefix and/or escape digits. No changes on the number presentation are required. (129)</span><br></pre></td></tr></table></figure>
<h3 id="AG下发通话状态"><a href="#AG下发通话状态" class="headerlink" title="AG下发通话状态"></a>AG下发通话状态</h3><p>在开启<code>"Indicator status update"</code>(AT+CMER)之后，AG会主动下发当前的通话状态，<code>Indicator Index</code>对应+CIND返回的参数列表，<code>Indicator <idx></code>对应其值。</p>
<h4 id="拨打电话"><a href="#拨打电话" class="headerlink" title="拨打电话"></a>拨打电话</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">#CALLSETUP=2,拨号中</span><br><span class="line">> 1056 66.689969 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) HFP 27 Rcvd +CIEV: 2,2 </span><br></pre></td></tr></table></figure>
<h4 id="无通话或者挂断"><a href="#无通话或者挂断" class="headerlink" title="无通话或者挂断"></a>无通话或者挂断</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">#CALL=0,无通话</span><br><span class="line">1106 74.975552 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) HFP 27 Rcvd +CIEV: 1,0 </span><br></pre></td></tr></table></figure>
<h4 id="来电"><a href="#来电" class="headerlink" title="来电"></a>来电</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">#CALLSETUP=1,来电中</span><br><span class="line">> 1056 66.689969 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) HFP 27 Rcvd +CIEV: 2,1 </span><br></pre></td></tr></table></figure>
<h3 id="建立SCO-x2F-eSCO连接"><a href="#建立SCO-x2F-eSCO连接" class="headerlink" title="建立SCO/eSCO连接"></a>建立SCO/eSCO连接</h3><p>蓝牙电话的音频数据由SCO/eSCO协议传输，在HCI中无数据相关的日志。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br></pre></td><td class="code"><pre><span class="line">#HF选择编解码格式</span><br><span class="line">> 900 387.320548 XiaomiCo_6e:38:c5 (PHONE) localhost () HFP 24 Rcvd +BCS: 1 </span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HFP Profile</span><br><span class="line"> [Role: AG - Audio Gate (1)]</span><br><span class="line"> AT Stream: \r\n+BCS: 1\r\n</span><br><span class="line"> Command 0: +BCS</span><br><span class="line"> Command: +BCS (Bluetooth Codec Selection)</span><br><span class="line"> Type: Response (0x003a)</span><br><span class="line"> Parameters</span><br><span class="line"> Codec: CVSD (1)</span><br><span class="line">> 903 387.380459 localhost () XiaomiCo_6e:38:c5 (PHONE) HFP 23 Sent AT+BCS=1 </span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HFP Profile</span><br><span class="line"> [Role: HS - Headset (2)]</span><br><span class="line"> AT Stream: AT+BCS=1\r</span><br><span class="line"> Command 0: +BCS</span><br><span class="line"> Command Line Prefix: AT</span><br><span class="line"> Command: +BCS (Bluetooth Codec Selection)</span><br><span class="line"> Type: Action Command (0x003d)</span><br><span class="line"> Parameters</span><br><span class="line"> Codec: CVSD (1)</span><br><span class="line"></span><br><span class="line">#AG请求建立eSCO连接</span><br><span class="line">> 906 387.530834 controller host HCI_EVT 13 Rcvd Connect Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Connect Request</span><br><span class="line"> Event Code: Connect Request (0x04)</span><br><span class="line"> Parameter Total Length: 10</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Class of Device: 0x001f00 (Uncategorized: device code not specified:Unknown - services:)</span><br><span class="line"> Link Type: eSCO connection (Voice Channels) (0x02)</span><br><span class="line"></span><br><span class="line">#HF允许建立eSCO连接</span><br><span class="line">> 907 387.531078 host controller HCI_CMD 67 Sent Enhanced Accept Synchronous Connection Request</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Command - Enhanced Accept Synchronous Connection Request</span><br><span class="line"> Command Opcode: Enhanced Accept Synchronous Connection Request (0x043e)</span><br><span class="line"> 0000 01.. .... .... = Opcode Group Field: Link Control Commands (0x01)</span><br><span class="line"> .... ..00 0011 1110 = Opcode Command Field: Enhanced Accept Synchronous Connection Request (0x03e)</span><br><span class="line"> Parameter Total Length: 63</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Tx Bandwidth (bytes/s): 8000</span><br><span class="line"> Rx Bandwidth (bytes/s): 8000</span><br><span class="line"> Transmit Coding Format</span><br><span class="line"> Receive Coding Format</span><br><span class="line"> Transmit Codec Frame Size: 60</span><br><span class="line"> Receive Codec Frame Size: 60</span><br><span class="line"> Input Bandwidth: 16000</span><br><span class="line"> Output Bandwidth: 16000</span><br><span class="line"> Input Coding Format</span><br><span class="line"> Output Coding Format</span><br><span class="line"> Input Coded Data Size: 16</span><br><span class="line"> Output Coded Data Size: 16</span><br><span class="line"> Input PCM Data Format: 2's complement (0x02)</span><br><span class="line"> Output PCM Data Format: 2's complement (0x02)</span><br><span class="line"> Input PCM Sample Payload MSB Position: 0</span><br><span class="line"> Output PCM Sample Payload MSB Position: 0</span><br><span class="line"> Input Data Path: Vendor Specific</span><br><span class="line"> Output Data Path: Vendor Specific</span><br><span class="line"> Input Transport Unit Size: 16</span><br><span class="line"> Output Transport Unit Size: 16</span><br><span class="line"> Max. Latency (ms): 12</span><br><span class="line"> Packet Type: 0x03bf, 3-EV5 may NOT be used, 2-EV5 may NOT be used, 3-EV3 may NOT be used, EV5 may be used, EV4 may be used, EV3 may be used, HV3 may be used, HV2 may be used, HV1 may be used</span><br><span class="line"> Retransmission Effort: At least 1 retransmission, optimize for link quality (2)</span><br><span class="line"> [Pending in frame: 909]</span><br><span class="line"> [Command-Pending Delta: 1.38ms]</span><br><span class="line"> [Response in frame: 910]</span><br><span class="line"> [Command-Response Delta: 3.862ms]</span><br><span class="line"></span><br><span class="line">#eSCO连接成功</span><br><span class="line">> 910 387.534940 controller host HCI_EVT 20 Rcvd Synchronous Connection Complete</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth HCI Event - Synchronous Connection Complete</span><br><span class="line"> Event Code: Synchronous Connection Complete (0x2c)</span><br><span class="line"> Parameter Total Length: 17</span><br><span class="line"> Status: Success (0x00)</span><br><span class="line"> Connection Handle: 0x0e00</span><br><span class="line"> BD_ADDR: XiaomiCo_6e:38:c5 (00:00:00:00:00:00)</span><br><span class="line"> Link Type: eSCO connection (0x02)</span><br><span class="line"> Transmit Interval: 12 slots (7.5 msec)</span><br><span class="line"> Retransmit Window: 2 slots (1.25 msec)</span><br><span class="line"> Rx Packet Length: 60</span><br><span class="line"> Tx Packet Length: 60</span><br><span class="line"> Air Mode: CVSD (2)</span><br><span class="line"> [Command in frame: 907]</span><br><span class="line"> [Pending in frame: 909]</span><br><span class="line"> [Pending-Response Delta: 2.482ms]</span><br><span class="line"> [Command-Response Delta: 3.862ms]</span><br></pre></td></tr></table></figure>
<h1 id="蓝牙音乐"><a href="#蓝牙音乐" class="headerlink" title="蓝牙音乐"></a>蓝牙音乐</h1><h2 id="AVDTP"><a href="#AVDTP" class="headerlink" title="AVDTP"></a>AVDTP</h2><p><strong>AVDTP：AUDIO/VIDEO DISTRIBUTION TRANSPORT PROTOCOL(音视频分配传输协议)</strong> ，用于音乐数据流的建立与传输控制。</p>
<h3 id="建立连接"><a href="#建立连接" class="headerlink" title="建立连接"></a>建立连接</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">> 458 11.574257 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) L2CAP 17 Sent Connection Request (AVDTP, SCID: 0x0042)</span><br></pre></td></tr></table></figure>
<h3 id="数据流传输"><a href="#数据流传输" class="headerlink" title="数据流传输"></a>数据流传输</h3><p>数据流的生命状态：</p>
<p><img data-src="https://s1.ax1x.com/2022/04/11/LV6NVA.png"></p>
<h4 id="查找-Idle"><a href="#查找-Idle" class="headerlink" title="查找(Idle)"></a>查找(Idle)</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br></pre></td><td class="code"><pre><span class="line">#查询AG的所有音源</span><br><span class="line">> 468 11.652772 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) AVDTP 11 Sent Command - Discover</span><br><span class="line">> 469 11.722467 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) AVDTP 15 Rcvd ResponseAccept - Discover - items: 2</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVDTP Protocol</span><br><span class="line"> Signal: Discover (ResponseAccept)</span><br><span class="line"> ACP SEP [1 - Audio Source] item 1/2</span><br><span class="line"> 0000 01.. = SEID: 1</span><br><span class="line"> .... ..0. = In Use: False (0x0)</span><br><span class="line"> .... ...0 = RFA0: 0x0</span><br><span class="line"> 0000 .... = Media Type: Audio (0x0)</span><br><span class="line"> .... 0... = Type: Source (0x0)</span><br><span class="line"> .... .000 = RFA1: 0x0</span><br><span class="line"> ACP SEP [2 - Audio Source] item 2/2</span><br><span class="line"> 0000 10.. = SEID: 2</span><br><span class="line"> .... ..0. = In Use: False (0x0)</span><br><span class="line"> .... ...0 = RFA0: 0x0</span><br><span class="line"> 0000 .... = Media Type: Audio (0x0)</span><br><span class="line"> .... 0... = Type: Source (0x0)</span><br><span class="line"> .... .000 = RFA1: 0x0</span><br><span class="line"></span><br><span class="line">#获取音源详细信息</span><br><span class="line">> 470 11.722896 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) AVDTP 12 Sent Command - GetAllCapabilities - ACP SEID [1 - Audio Source]</span><br><span class="line">> 473 11.728705 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) AVDTP 23 Rcvd ResponseAccept - GetAllCapabilities - Audio SBC (44100 | Mono JointStereo | block: 4 8 12 16 | subbands: 8 | allocation: Loudness | bitpool: 2..53)</span><br><span class="line">> 474 11.728960 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) AVDTP 12 Sent Command - GetAllCapabilities - ACP SEID [2 - Audio Source]</span><br><span class="line">> 476 11.734811 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) AVDTP 25 Rcvd ResponseAccept - GetAllCapabilities - Audio MPEG-2,4 AAC</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVDTP Protocol</span><br><span class="line"> Signal: GetAllCapabilities (ResponseAccept)</span><br><span class="line"> 0010 .... = Transaction: 0x2</span><br><span class="line"> .... 00.. = Packet Type: Single (0x0)</span><br><span class="line"> .... ..10 = Message Type: ResponseAccept (0x2)</span><br><span class="line"> 00.. .... = RFA: 0x0</span><br><span class="line"> ..00 1100 = Signal: GetAllCapabilities (0x0c)</span><br><span class="line"> Capabilities</span><br><span class="line"> Service: Media Transport</span><br><span class="line"> Service: Media Codec - Audio MPEG-2,4 AAC</span><br><span class="line"> Service: Delay Reporting</span><br></pre></td></tr></table></figure>
<h4 id="设置-x2F-打开-Configured-x2F-Open"><a href="#设置-x2F-打开-Configured-x2F-Open" class="headerlink" title="设置/打开(Configured/Open)"></a>设置/打开(Configured/Open)</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line">#选择对应音源</span><br><span class="line">> 477 11.735508 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) AVDTP 25 Sent Command - SetConfiguration - ACP SEID [2 - Audio Source] - INT SEID [2 - Audio Source] - Audio MPEG-2,4 AAC</span><br><span class="line">> 479 11.742210 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) AVDTP 11 Rcvd ResponseAccept - SetConfiguration</span><br><span class="line"></span><br><span class="line">#打开音源</span><br><span class="line">> 480 11.742538 SANYOEle_62:35:bb (DEVICE) XiaomiCo_6e:38:c5 (PHONE) AVDTP 12 Sent Command - Open - ACP SEID [2 - Audio Source]</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVDTP Protocol</span><br><span class="line"> Signal: Open (Command)</span><br><span class="line"> ACP SEID [2 - Audio Source]</span><br><span class="line">> 485 11.747312 XiaomiCo_6e:38:c5 (PHONE) SANYOEle_62:35:bb (DEVICE) AVDTP 11 Rcvd ResponseAccept - Open</span><br></pre></td></tr></table></figure>
<h4 id="开始传输-Streaming"><a href="#开始传输-Streaming" class="headerlink" title="开始传输(Streaming)"></a>开始传输(Streaming)</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">> 601 28.945727 XiaomiCo_f2:31:c7 (PHONE) SANYOEle_71:7b:5c (DEVICE) AVDTP 12 Rcvd Command - Start - ACP SEID [2 - Audio Sink]</span><br><span class="line">> 602 28.946025 SANYOEle_71:7b:5c (DEVICE) XiaomiCo_f2:31:c7 (PHONE) AVDTP 11 Sent ResponseAccept - Start</span><br></pre></td></tr></table></figure>
<h4 id="传输-Streaming"><a href="#传输-Streaming" class="headerlink" title="传输(Streaming)"></a>传输(Streaming)</h4><p>使用RTP协议传输数据，AVDTP协议本身不处理数据流。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br></pre></td><td class="code"><pre><span class="line">> 612 29.166322 XiaomiCo_f2:31:c7 (PHONE) SANYOEle_71:7b:5c (DEVICE) RTP 37 PT=Unknown, SSRC=0x2, Seq=1, Time=0</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Frame 612: 37 bytes on wire (296 bits), 37 bytes captured (296 bits)</span><br><span class="line">Bluetooth</span><br><span class="line">Bluetooth HCI H4</span><br><span class="line">Bluetooth HCI ACL Packet</span><br><span class="line">Bluetooth L2CAP Protocol</span><br><span class="line">Bluetooth A2DP Profile</span><br><span class="line"> [ACP SEID: 2]</span><br><span class="line"> [INT SEID: 2]</span><br><span class="line"> [Codec: MPEG-2,4 AAC (0x02)]</span><br><span class="line"> [Stream Start in Frame: 612]</span><br><span class="line"> [Stream End in Frame: 22786]</span><br><span class="line"> [Stream Number: 1]</span><br><span class="line">Real-Time Transport Protocol</span><br><span class="line"> [Stream setup by BT A2DP (frame 612)]</span><br><span class="line"> 10.. .... = Version: RFC 1889 Version (2)</span><br><span class="line"> ..0. .... = Padding: False</span><br><span class="line"> ...0 .... = Extension: False</span><br><span class="line"> .... 0000 = Contributing source identifiers count: 0</span><br><span class="line"> 0... .... = Marker: False</span><br><span class="line"> Payload type: Unknown (98)</span><br><span class="line"> Sequence number: 1</span><br><span class="line"> [Extended sequence number: 65537]</span><br><span class="line"> Timestamp: 0</span><br><span class="line"> Synchronization Source identifier: 0x00000002 (2)</span><br><span class="line">Data (16 bytes)</span><br><span class="line"> Data: 47fc0000b0908003000621100520a41c</span><br><span class="line"> [Length: 16]</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<h4 id="暂停-Streaming"><a href="#暂停-Streaming" class="headerlink" title="暂停(Streaming)"></a>暂停(Streaming)</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">> 773 23.510436 localhost () XiaomiCo_6e:38:c5 (PHONE) AVDTP 11 Sent ResponseAccept - Suspend</span><br></pre></td></tr></table></figure>
<h4 id="释放-Closing"><a href="#释放-Closing" class="headerlink" title="释放(Closing)"></a>释放(Closing)</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">> 5692 96.414176 localhost () XiaomiCo_6e:38:c5 (PHONE) AVDTP 12 Sent Command - Close - ACP SEID [2 - Audio Source]</span><br></pre></td></tr></table></figure>
<h2 id="AVCTP"><a href="#AVCTP" class="headerlink" title="AVCTP"></a>AVCTP</h2><p>**AVCTP： Audio/Video Control Transport Protocol(音频/视频控制传输协议)**，用于蓝牙设备间音乐数据流功能的发现与控制，但是控制的具体功能逻辑不由AVCTP处理，其只发送命令。</p>
<p>发现由SDP协议完成，然后发起L2CAP通道连接蓝牙设备之间的AVCTP服务，如下:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br></pre></td><td class="code"><pre><span class="line">#发现</span><br><span class="line">> 134 0.964749 localhost () XiaomiCo_6e:38:c5 (PHONE) SDP 33 Sent Service Search Attribute Request : Audio Source: [Service Class ID List 0x0001] [Protocol Descriptor List 0x0004] [Bluetooth Profile Descriptor List 0x0009] </span><br><span class="line">> 139 0.981837 XiaomiCo_6e:38:c5 (PHONE) localhost () SDP 64 Rcvd Service Search Attribute Response </span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth SDP Protocol</span><br><span class="line"> PDU: Service Search Attribute Response (0x07)</span><br><span class="line"> Transaction Id: 0x0000</span><br><span class="line"> Parameter Length: 50</span><br><span class="line"> Attribute List Byte Count: 47</span><br><span class="line"> Attribute Lists [count = 1]</span><br><span class="line"> Data Element: Sequence uint8 45 bytes</span><br><span class="line"> 0011 0... = Data Element Type: Sequence (6)</span><br><span class="line"> .... .101 = Data Element Size: uint8 (5)</span><br><span class="line"> Data Element Var Size: 45</span><br><span class="line"> Data Value</span><br><span class="line"> Attribute List [count = 3] (Audio Source)</span><br><span class="line"> Data Element: Sequence uint16 42 bytes</span><br><span class="line"> 0011 0... = Data Element Type: Sequence (6)</span><br><span class="line"> .... .110 = Data Element Size: uint16 (6)</span><br><span class="line"> Data Element Var Size: 42</span><br><span class="line"> Data Value</span><br><span class="line"> Service Attribute: Service Class ID List (0x1), value = Audio Source</span><br><span class="line"> Attribute ID: Service Class ID List</span><br><span class="line"> Value</span><br><span class="line"> Service Attribute: Protocol Descriptor List (0x4), value = L2CAP:25 -> AVDTP (1.3)</span><br><span class="line"> Attribute ID: Protocol Descriptor List</span><br><span class="line"> Value</span><br><span class="line"> Service Attribute: Bluetooth Profile Descriptor List (0x9), value = Advanced Audio Distribution 1.3</span><br><span class="line"> Attribute ID: Bluetooth Profile Descriptor List</span><br><span class="line"> Value</span><br><span class="line"> Continuation State: no (00)</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">#连接</span><br><span class="line">> 147 1.006617 localhost () XiaomiCo_6e:38:c5 (PHONE) L2CAP 17 Sent Connection Request (AVDTP, SCID: 0x0043)</span><br><span class="line">> 155 1.017317 XiaomiCo_6e:38:c5 (PHONE) localhost () L2CAP 21 Rcvd Connection Response - Success (SCID: 0x0043, DCID: 0x0042)</span><br></pre></td></tr></table></figure>
<h2 id="AVRCP"><a href="#AVRCP" class="headerlink" title="AVRCP"></a>AVRCP</h2><p>**AVRCP：Audio/Video Remote Control Profile(音频/视频远程控制配置文件)**，用于控制蓝牙音乐的标准接口。</p>
<p>在AVRCP中，<strong>TG</strong>表示播放设备，<strong>CT</strong>表示控制设备。</p>
<h3 id="命令格式"><a href="#命令格式" class="headerlink" title="命令格式"></a>命令格式</h3><p>命令分为两个类型：VENDOR DEPENDENT 与PASS THROUGH，</p>
<ul>
<li><p>VENDOR DEPENDENT：通过<code>Ctype</code>与<code>PDU ID</code>来区分功能，<code>Ctype</code>有<strong>Control, Status , Notify</strong>,ACCEPTED,REJECTED, CHANGED,INTERIM,IMPLEMENTED,STABLE等。</p>
</li>
<li><p>PASS THROUGH：是播放控制命令，<code>Ctype</code>只有<strong>Control</strong>。</p>
</li>
</ul>
<p>其中请求命令<code>Ctype</code>为<strong>Notify</strong>，回复事件<code>Ctype</code>为<strong>Interim</strong>，事件通知<code>Ctype</code>为<strong>Changed</strong>。</p>
<h3 id="获取TG播放器支持功能"><a href="#获取TG播放器支持功能" class="headerlink" title="获取TG播放器支持功能"></a>获取TG播放器支持功能</h3><p><code>PDU ID</code>：GetFolderItems，通过<code>Scope</code>来区分功能，用于<strong>TG</strong>可以播放器列表与每个播放器支持的功能。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br></pre></td><td class="code"><pre><span class="line">> 307 1.551666 localhost () XiaomiCo_6e:38:c5 (PHONE) AVRCP 29 Sent Browsing: Command - GetFolderItems - Scope: MediaPlayerList, StartItem: 0x0000, EndItem: 0x0013</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> PDU ID: GetFolderItems (0x71)</span><br><span class="line"> Parameter Length: 10</span><br><span class="line"> Scope: MediaPlayerList (0x00)</span><br><span class="line"> StartItem: 0</span><br><span class="line"> EndItem: 19</span><br><span class="line"> Attribute Count: All attributes are requested (0)</span><br><span class="line"> Attribute List</span><br><span class="line"></span><br><span class="line">> 326 1.651062 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 67 Rcvd Browsing: OK - GetFolderItems - UidCounter: 0x0000, NumberOfItems: 1</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> PDU ID: GetFolderItems (0x71)</span><br><span class="line"> Parameter Length: 48</span><br><span class="line"> Status: OK (0x04)</span><br><span class="line"> UID Counter: 0x0000</span><br><span class="line"> Number Of Items: 1</span><br><span class="line"> Player: Music Player</span><br><span class="line"> Item Type: Media Player Item (0x01)</span><br><span class="line"> Item Length: 40</span><br><span class="line"> Player ID: 0</span><br><span class="line"> Major Player Type: Unknown (0x01)</span><br><span class="line"> Player SubType: Audio Book (0x00000001)</span><br><span class="line"> Play Status: Stopped (0x00)</span><br><span class="line"> Features</span><br><span class="line"> Not Used Features</span><br><span class="line"> .... ...1 = PASSTHROUGH Play: 0x1</span><br><span class="line"> .... ..1. = PASSTHROUGH Stop: 0x1</span><br><span class="line"> .... .1.. = PASSTHROUGH Pause: 0x1</span><br><span class="line"> ...1 .... = PASSTHROUGH Rewind: 0x1</span><br><span class="line"> ..1. .... = PASSTHROUGH FastForward: 0x1</span><br><span class="line"> 1... .... = PASSTHROUGH Forward: 0x1</span><br><span class="line"> .... ...1 = PASSTHROUGH Backward: 0x1</span><br><span class="line"> .... .1.. = Advanced Control Player: 0x1</span><br><span class="line"> Character Set: UTF-8 (106)</span><br><span class="line"> Displayable Name Length: 12</span><br><span class="line"> Displayable Name: Music Player</span><br></pre></td></tr></table></figure>
<h3 id="获取TG支持事件"><a href="#获取TG支持事件" class="headerlink" title="获取TG支持事件"></a>获取TG支持事件</h3><p><code>PDU ID</code>：GetCapabilities，用于<strong>TG</strong>可以支持的事件。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br></pre></td><td class="code"><pre><span class="line">> 288 1.233497 localhost () XiaomiCo_6e:38:c5 (PHONE) AVRCP 23 Sent Vendor dependent: Status - GetCapabilities(Events Supported)</span><br><span class="line">> 299 1.252688 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 30 Rcvd Vendor dependent: Stable - GetCapabilities(Events Supported) - Count: 6</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 1100 = Ctype: Stable (0xc)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Vendor dependent (0x00)</span><br><span class="line"> Company ID: 00:19:58 (Bluetooth SIG, Inc.)</span><br><span class="line"> PDU ID: GetCapabilities (0x10)</span><br><span class="line"> 0000 00.. = RFA: 0x00</span><br><span class="line"> .... ..00 = Packet Type: Single (0x0)</span><br><span class="line"> Parameter Length: 8</span><br><span class="line"> Capability: Events Supported (0x03)</span><br><span class="line"> Capability Count: 0x06</span><br><span class="line"> Event ID: PlaybackStatusChanged (0x01)</span><br><span class="line"> Event ID: TrackChanged (0x02)</span><br><span class="line"> Event ID: PlaybackPositionChanged (0x05)</span><br><span class="line"> Event ID: AvailablePlayersChanged (0x0a)</span><br><span class="line"> Event ID: AddressedPlayerChanged (0x0b)</span><br><span class="line"> Event ID: NowPlayingContentChanged (0x09)</span><br><span class="line"> [Response Time: 19/1000ms]</span><br><span class="line"> [Command in frame: 288]</span><br></pre></td></tr></table></figure>
<h3 id="播放器状态"><a href="#播放器状态" class="headerlink" title="播放器状态"></a>播放器状态</h3><p><strong>CT</strong>端获取<strong>TC</strong>端播放状态，<code>Play Status</code>的参数由<code>GetFolderItems</code>原语获取，通过<code>Ctype</code>来区分操作。</p>
<h4 id="注册事件"><a href="#注册事件" class="headerlink" title="注册事件"></a>注册事件</h4><p><code>PDU ID</code>：RegisterNotification，<code>Event ID</code>为: PlaybackStatusChanged(<code>GetCapabilities</code>原语获取)。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line">> 300 1.252942 localhost () XiaomiCo_6e:38:c5 (PHONE) AVRCP 27 Sent Vendor dependent: Notify - RegisterNotification - PlaybackStatusChanged</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 0011 = Ctype: Notify (0x3)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Vendor dependent (0x00)</span><br><span class="line"> Company ID: 00:19:58 (Bluetooth SIG, Inc.)</span><br><span class="line"> PDU ID: RegisterNotification (0x31)</span><br><span class="line"> 0000 00.. = RFA: 0x00</span><br><span class="line"> .... ..00 = Packet Type: Single (0x0)</span><br><span class="line"> Parameter Length: 5</span><br><span class="line"> Event ID: PlaybackStatusChanged (0x01)</span><br><span class="line"> Interval: 0</span><br><span class="line"> [Response Time: 107/1000ms]</span><br><span class="line"> [Response in frame: 324]</span><br><span class="line"></span><br><span class="line">> 324 1.649874 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 24 Rcvd Vendor dependent: Interim - RegisterNotification - PlaybackStatusChanged - PlayStatus: Paused</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 1111 = Ctype: Interim (0xf)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Vendor dependent (0x00)</span><br><span class="line"> Company ID: 00:19:58 (Bluetooth SIG, Inc.)</span><br><span class="line"> PDU ID: RegisterNotification (0x31)</span><br><span class="line"> 0000 00.. = RFA: 0x00</span><br><span class="line"> .... ..00 = Packet Type: Single (0x0)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> Event ID: PlaybackStatusChanged (0x01)</span><br><span class="line"> Play Status: Paused (0x02)</span><br><span class="line"> [Response Time: 107/1000ms]</span><br><span class="line"> [Command in frame: 300]</span><br></pre></td></tr></table></figure>
<h4 id="事件通知"><a href="#事件通知" class="headerlink" title="事件通知"></a>事件通知</h4><p><code>PDU ID</code>：RegisterNotification，<code>Event ID</code>为: PlaybackStatusChanged，通过<code>Ctype</code>来区分功能。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line">> 372 2.461590 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 24 Rcvd Vendor dependent: Changed - RegisterNotification - PlaybackStatusChanged - PlayStatus: Stopped</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 1101 = Ctype: Changed (0xd)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Vendor dependent (0x00)</span><br><span class="line"> Company ID: 00:19:58 (Bluetooth SIG, Inc.)</span><br><span class="line"> PDU ID: RegisterNotification (0x31)</span><br><span class="line"> 0000 00.. = RFA: 0x00</span><br><span class="line"> .... ..00 = Packet Type: Single (0x0)</span><br><span class="line"> Parameter Length: 2</span><br><span class="line"> Event ID: PlaybackStatusChanged (0x01)</span><br><span class="line"> Play Status: Stopped (0x00)</span><br><span class="line"> [Response Time: 107/1000ms]</span><br><span class="line"> [Command in frame: 300]</span><br></pre></td></tr></table></figure>
<h4 id="主动获取"><a href="#主动获取" class="headerlink" title="主动获取"></a>主动获取</h4><p><code>PDU ID</code>：GetPlayStatus，往往与<code>RegisterNotification-TrackChanged</code>命令配合使用。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br></pre></td><td class="code"><pre><span class="line">> 466 18.051244 localhost () XiaomiCo_6e:38:c5 (PHONE) AVRCP 22 Sent Vendor dependent: Status - GetPlayStatus</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 0001 = Ctype: Status (0x1)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Vendor dependent (0x00)</span><br><span class="line"> Company ID: 00:19:58 (Bluetooth SIG, Inc.)</span><br><span class="line"> PDU ID: GetPlayStatus (0x30)</span><br><span class="line"> 0000 00.. = RFA: 0x00</span><br><span class="line"> .... ..00 = Packet Type: Single (0x0)</span><br><span class="line"> Parameter Length: 0</span><br><span class="line"> [Response Time: 40/1000ms]</span><br><span class="line"> [Response in frame: 478]</span><br><span class="line"></span><br><span class="line">> 478 18.091970 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 31 Rcvd Vendor dependent: Stable - GetPlayStatus PlayStatus: Playing, SongPosition: 6118ms, SongLength: 175000ms</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 1100 = Ctype: Stable (0xc)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Vendor dependent (0x00)</span><br><span class="line"> Company ID: 00:19:58 (Bluetooth SIG, Inc.)</span><br><span class="line"> PDU ID: GetPlayStatus (0x30)</span><br><span class="line"> 0000 00.. = RFA: 0x00</span><br><span class="line"> .... ..00 = Packet Type: Single (0x0)</span><br><span class="line"> Parameter Length: 9</span><br><span class="line"> Song Length: 175000</span><br><span class="line"> Song Position: 6118</span><br><span class="line"> Play Status: Playing (0x01)</span><br><span class="line"> [Response Time: 40/1000ms]</span><br><span class="line"> [Command in frame: 466]</span><br></pre></td></tr></table></figure>
<h3 id="播放进度"><a href="#播放进度" class="headerlink" title="播放进度"></a>播放进度</h3><p>使用<code>PDU ID</code>：GetPlayStatus，获取<strong>TG</strong>端播放进度，<strong>CT</strong>端轮循调用此命令。其中<code>Song Length</code>参数为音乐长度，<code>Song Position</code>为当前播放进度。日志参考<code>主动获取播放器</code>章节。</p>
<h3 id="音轨状态"><a href="#音轨状态" class="headerlink" title="音轨状态"></a>音轨状态</h3><p><strong>CT</strong>端获取<strong>TC</strong>端播放器音轨状态，状态有下面两种：</p>
<ul>
<li>无音轨：<code>Identifier: 0xffffffffffffffff (NOT SELECTED)</code></li>
<li>有音轨：<code>Identifier: 0x0000000000000000 (SELECTED)</code></li>
</ul>
<p><strong>音轨状态事件</strong>会在每次开始播放都会有事件，歌词就是通过发送<strong>音轨状态事件</strong>来完成的。</p>
<h4 id="注册事件-1"><a href="#注册事件-1" class="headerlink" title="注册事件"></a>注册事件</h4><p><code>PDU ID</code>：RegisterNotification，<code>Event ID</code>为: TrackChanged(<code>GetCapabilities</code>原语获取)。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line">> 323 1.331254 localhost () XiaomiCo_6e:38:c5 (PHONE) AVRCP 27 Sent Vendor dependent: Notify - RegisterNotification - TrackChanged</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 0011 = Ctype: Notify (0x3)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Vendor dependent (0x00)</span><br><span class="line"> Company ID: 00:19:58 (Bluetooth SIG, Inc.)</span><br><span class="line"> PDU ID: RegisterNotification (0x31)</span><br><span class="line"> 0000 00.. = RFA: 0x00</span><br><span class="line"> .... ..00 = Packet Type: Single (0x0)</span><br><span class="line"> Parameter Length: 5</span><br><span class="line"> Event ID: TrackChanged (0x02)</span><br><span class="line"> Interval: 0</span><br><span class="line"> [Response Time: 35/1000ms]</span><br><span class="line"> [Response in frame: 330]</span><br><span class="line"></span><br><span class="line">> 330 1.366518 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 31 Rcvd Vendor dependent: Interim - RegisterNotification - TrackChanged - 0xFFFFFFFFFFFFFFFF (NOT SELECTED)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 1111 = Ctype: Interim (0xf)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Vendor dependent (0x00)</span><br><span class="line"> Company ID: 00:19:58 (Bluetooth SIG, Inc.)</span><br><span class="line"> PDU ID: RegisterNotification (0x31)</span><br><span class="line"> 0000 00.. = RFA: 0x00</span><br><span class="line"> .... ..00 = Packet Type: Single (0x0)</span><br><span class="line"> Parameter Length: 9</span><br><span class="line"> Event ID: TrackChanged (0x02)</span><br><span class="line"> Identifier: 0xffffffffffffffff (NOT SELECTED)</span><br><span class="line"> [Response Time: 35/1000ms]</span><br><span class="line"> [Command in frame: 323]</span><br></pre></td></tr></table></figure>
<h4 id="事件通知-1"><a href="#事件通知-1" class="headerlink" title="事件通知"></a>事件通知</h4><p><code>PDU ID</code>：RegisterNotification，<code>Event ID</code>为: TrackChanged，通过<code>Ctype</code>来区分功能。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">> 451 18.026715 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 31 Rcvd Vendor dependent: Changed - RegisterNotification - TrackChanged - 0x0000000000000000 (SELECTED)</span><br></pre></td></tr></table></figure>
<h3 id="获取播放音轨的属性"><a href="#获取播放音轨的属性" class="headerlink" title="获取播放音轨的属性"></a>获取播放音轨的属性</h3><p>获取当前音轨，播放音乐的属性，如标题、歌手等信息。<code>Attribute List</code>请查看<a href="%E5%8F%82%E8%80%83">AVRCP协议规范</a>第26章节，往往与<code>RegisterNotification-TrackChanged</code>命令配合使用。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br></pre></td><td class="code"><pre><span class="line">> 465 18.050915 localhost () XiaomiCo_6e:38:c5 (PHONE) AVRCP 59 Sent Vendor dependent: Status - GetElementAttributes - 0x0000000000000000 (PLAYING)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 0001 = Ctype: Status (0x1)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Vendor dependent (0x00)</span><br><span class="line"> Company ID: 00:19:58 (Bluetooth SIG, Inc.)</span><br><span class="line"> PDU ID: GetElementAttributes (0x20)</span><br><span class="line"> 0000 00.. = RFA: 0x00</span><br><span class="line"> .... ..00 = Packet Type: Single (0x0)</span><br><span class="line"> Parameter Length: 37</span><br><span class="line"> Identifier: 0x0000000000000000</span><br><span class="line"> Number of Attributes: 7</span><br><span class="line"> Attribute List</span><br><span class="line"> Attribute ID: Title (0x00000001)</span><br><span class="line"> Attribute ID: Artist (0x00000002)</span><br><span class="line"> Attribute ID: Album (0x00000003)</span><br><span class="line"> Attribute ID: Media Number (0x00000004)</span><br><span class="line"> Attribute ID: Total Number of Media (0x00000005)</span><br><span class="line"> Attribute ID: Genre (0x00000006)</span><br><span class="line"> Attribute ID: Playing Time (0x00000007)</span><br><span class="line"> [Response Time: 3/1000ms]</span><br><span class="line"> [Response in frame: 469]</span><br><span class="line"></span><br><span class="line">> 469 18.054345 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 127 Rcvd Vendor dependent: Stable - GetElementAttributes - Title: "Demons"</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 1100 = Ctype: Stable (0xc)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Vendor dependent (0x00)</span><br><span class="line"> Company ID: 00:19:58 (Bluetooth SIG, Inc.)</span><br><span class="line"> PDU ID: GetElementAttributes (0x20)</span><br><span class="line"> 0000 00.. = RFA: 0x00</span><br><span class="line"> .... ..00 = Packet Type: Single (0x0)</span><br><span class="line"> Parameter Length: 105</span><br><span class="line"> Number of Attributes: 7</span><br><span class="line"> Attribute Entries</span><br><span class="line"> Attribute [ Title]: Demons</span><br><span class="line"> Attribute [ Artist]: Imagine Dragons</span><br><span class="line"> Attribute [ Album]: Continued Silence</span><br><span class="line"> Attribute [ Media Number]: 10</span><br><span class="line"> Attribute [Total Number of Media]: 18</span><br><span class="line"> Attribute [ Genre]: </span><br><span class="line"> Attribute [ Playing Time]: 175000</span><br><span class="line"> [Response Time: 3/1000ms]</span><br><span class="line"> [Command in frame: 465]</span><br></pre></td></tr></table></figure>
<h3 id="播放器控制"><a href="#播放器控制" class="headerlink" title="播放器控制"></a>播放器控制</h3><p><strong>CT</strong>控制<strong>TG</strong>播放器的相关命令，都是PASS THROUGH类型，通过<code>Operation ID</code>来区分功能，通过<code>Ctype</code>来区分操作。</p>
<h4 id="播放"><a href="#播放" class="headerlink" title="播放"></a>播放</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line">> 298 1.252592 localhost () XiaomiCo_6e:38:c5 (PHONE) AVRCP 17 Sent Pass Through: Control - PLAY (Pushed)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 0000 = Ctype: Control (0x0)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Pass Through (0x7c)</span><br><span class="line"> 0... .... = State: Pushed (0x0)</span><br><span class="line"> .100 0100 = Operation ID: PLAY (0x44)</span><br><span class="line"> Data Length: 0x00</span><br><span class="line"> [Response Time: 14/200ms]</span><br><span class="line"> [Response in frame: 308]</span><br><span class="line"></span><br><span class="line">>308 1.266992 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 17 Rcvd Pass Through: Accepted - PLAY (Pushed)</span><br></pre></td></tr></table></figure>
<h4 id="暂停"><a href="#暂停" class="headerlink" title="暂停"></a>暂停</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line">> 430 7.424245 localhost () XiaomiCo_6e:38:c5 (PHONE) AVRCP 17 Sent Pass Through: Control - PAUSE (Pushed)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 0000 = Ctype: Control (0x0)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Pass Through (0x7c)</span><br><span class="line"> 0... .... = State: Pushed (0x0)</span><br><span class="line"> .100 0110 = Operation ID: PAUSE (0x46)</span><br><span class="line"> Data Length: 0x00</span><br><span class="line"> [Response Time: 70/200ms]</span><br><span class="line"> [Response in frame: 434]</span><br><span class="line"></span><br><span class="line">> 434 7.494377 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 17 Rcvd Pass Through: Accepted - PAUSE (Pushed)</span><br></pre></td></tr></table></figure>
<h4 id="下一曲"><a href="#下一曲" class="headerlink" title="下一曲"></a>下一曲</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line">> 1163 40.755874 localhost () XiaomiCo_6e:38:c5 (PHONE) AVRCP 17 Sent Pass Through: Control - BACKWARD (Pushed)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 0000 = Ctype: Control (0x0)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Pass Through (0x7c)</span><br><span class="line"> 0... .... = State: Pushed (0x0)</span><br><span class="line"> .100 1100 = Operation ID: BACKWARD (0x4c)</span><br><span class="line"> Data Length: 0x00</span><br><span class="line"> [Response Time: 15/200ms]</span><br><span class="line"> [Response in frame: 1168]</span><br><span class="line"></span><br><span class="line">> 1168 40.771498 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 17 Rcvd Pass Through: Accepted - BACKWARD (Pushed)</span><br></pre></td></tr></table></figure>
<h4 id="上一曲"><a href="#上一曲" class="headerlink" title="上一曲"></a>上一曲</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line">> 969 37.736799 localhost () XiaomiCo_6e:38:c5 (PHONE) AVRCP 17 Sent Pass Through: Control - FORWARD (Pushed)</span><br><span class="line">---------------------------------------------------------------------------</span><br><span class="line">Bluetooth AVRCP Profile</span><br><span class="line"> 0000 .... = Reserved: 0x0</span><br><span class="line"> .... 0000 = Ctype: Control (0x0)</span><br><span class="line"> 0100 1... = Subunit Type: Panel (0x09)</span><br><span class="line"> .... .000 = Subunit ID: 0x0</span><br><span class="line"> Opcode: Pass Through (0x7c)</span><br><span class="line"> 0... .... = State: Pushed (0x0)</span><br><span class="line"> .100 1011 = Operation ID: FORWARD (0x4b)</span><br><span class="line"> Data Length: 0x00</span><br><span class="line"> [Response Time: 25/200ms]</span><br><span class="line"> [Response in frame: 976]</span><br><span class="line"></span><br><span class="line">> 976 37.762691 XiaomiCo_6e:38:c5 (PHONE) localhost () AVRCP 17 Rcvd Pass Through: Accepted - FORWARD (Pushed)</span><br></pre></td></tr></table></figure>
<h1 id="参考"><a href="#参考" class="headerlink" title="参考"></a>参考</h1><ul>
<li>蓝牙核心协议规范<a target="_blank" rel="noopener" href="https://www.bluetooth.org/DocMan/handlers/DownloadDoc.ashx?doc_id=286439">Core_v4.2.pdf</a></li>
<li>PBAP协议规范<a target="_blank" rel="noopener" href="https://www.bluetooth.com/specifications/specs/phone-book-access-profile-1-2-3/">PBAP_v1.2.3.pdf</a></li>
<li>HFP协议规范<a target="_blank" rel="noopener" href="https://www.bluetooth.com/specifications/specs/hands-free-profile-1-8/">HFP_v1.8.pdf</a></li>
<li>AVDTP协议规范<a target="_blank" rel="noopener" href="https://www.bluetooth.com/specifications/specs/a-v-distribution-transport-protocol-1-3/">AVDTP_SPEC_V13.pdf</a></li>
<li>AVCTP协议规范<a target="_blank" rel="noopener" href="https://www.bluetooth.com/specifications/specs/a-v-%e2%80%8b%e2%80%8bcontrol-transport-protocol-1-4/">AVCTP_SPEC_V14.pdf</a></li>
<li>AVRCP协议规范<a target="_blank" rel="noopener" href="https://www.bluetooth.com/specifications/specs/a-v-remote-control-profile-1-6-2/">AVRCP_v1.6.2.pdf</a></li>
<li><a target="_blank" rel="noopener" href="https://blog.csdn.net/wenzongliang/article/details/84689377">蓝牙物理链路类型：SCO和ACL链路与A2DP</a></li>
<li><a target="_blank" rel="noopener" href="https://blog.csdn.net/XiaoXiaoPengBo/article/details/107792407">安全简单配对</a></li>
<li><a target="_blank" rel="noopener" href="https://blog.csdn.net/u010657219/article/details/42192481">在HCI层看蓝牙的连接过程</a></li>
<li><a target="_blank" rel="noopener" href="https://www.cnblogs.com/libs-liu/p/9498952.html">蓝牙SDP协议概述 </a></li>
<li><a target="_blank" rel="noopener" href="https://blog.csdn.net/XiaoXiaoPengBo/article/details/108125755">RFCOMM协议概念介绍</a></li>
<li><a target="_blank" rel="noopener" href="https://blog.51cto.com/u_2982693/3521456">蓝牙的OBEX协议</a></li>
<li><a target="_blank" rel="noopener" href="https://blog.csdn.net/weixin_44260005/article/details/105223139">蓝牙电话之PBAP协议分析</a></li>
<li><a target="_blank" rel="noopener" href="https://blog.csdn.net/shichaog/article/details/52123439">蓝牙之八-HFP</a></li>
<li><a target="_blank" rel="noopener" href="https://blog.csdn.net/shichaog/article/details/52126415">蓝牙之九-AT命令</a></li>
</ul>
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<h1 id="阻塞与挂起"><a href="#阻塞与挂起" class="headerlink" title="阻塞与挂起"></a>阻塞与挂起</h1><h2 id="挂起-suspend"><a href="#挂起-suspend" class="headerlink" title="挂起(suspend)"></a>挂起(suspend)</h2><blockquote>
<p>是指在操作系统进程管理将前台的进程暂停(suspend)并转入后台的动作。将进程挂起可以让用户在前台执行其他的进程。挂起的进程通常释放除CPU以外已经占有的系统资源，如内存等。</p>
</blockquote>
<h2 id="阻塞-block"><a href="#阻塞-block" class="headerlink" title="阻塞(block)"></a>阻塞(block)</h2><blockquote>
<p>正在执行的进程由于发生某时间（如I/O请求、申请缓冲区失败等）暂时无法继续执行。此时引起进程调度，OS把处理机分配给另一个就绪进程，而让受阻进程处于暂停状态，一般将这种状态称为阻塞状态。</p>
</blockquote>
<h2 id="两者的区别"><a href="#两者的区别" class="headerlink" title="两者的区别"></a>两者的区别</h2><p><strong>挂起</strong>是一种主动行为，因此恢复也应该要主动完成；</p>
<p><strong>阻塞</strong>则是一种被动行为，恢复交由系统完成。而且挂起队列在操作系统里可以看成一个，而阻塞队列则是不同的事件或资源（如信号量）就有自己的队列。</p>
<p><img data-src="https://pic.liaoheng.me/hc-pic/2024/02/3c148cfcf29b361b01d9002250f52873.jpg"></p>
<ul>
<li>运行中<strong>挂起</strong>，进入<code>静止就绪</code>状态，<em>释放资源</em>，自身对换到外存中，不释放锁，也不释放CPU，比如sleep()；</li>
<li>而运行中<strong>阻塞</strong>，进入<code>活动阻塞</code>状态，<em>释放资源</em>，释放锁，释放CPU，比如wait()。</li>
</ul>
<p>也就是说<strong>挂起</strong>在运行状态中要比<strong>阻塞</strong>靠前，<strong>挂起</strong>是一直在内存中定期运行自己，检查是否可以跳出当前状态；<strong>阻塞</strong>是自己不在运行，需要第三方检查自己是否可以跳出当前状态，在一定条件下也会由操作系统将其移出内存保存到外存中。</p>
<h2 id="Java中的线程与锁与其的关系"><a href="#Java中的线程与锁与其的关系" class="headerlink" title="Java中的线程与锁与其的关系"></a>Java中的线程与锁与其的关系</h2><p>Java 的 <a target="_blank" rel="noopener" href="https://docs.oracle.com/javase/7/docs/api/java/lang/Thread.State.html">Thread.State</a> 中定义了线程的 6 种状态，分别如下：</p>
<ol>
<li>NEW 未启动的，不会出现在 dump 文件中 (可以通过 jstack命令查看线程堆栈)</li>
<li>RUNNABLE 正在 JVM 中执行的</li>
<li>BLOCKED 被阻塞，等待获取监视器锁进入 synchronized 代码块或者在调用Object.wait 之后重新进入 synchronized 代码块</li>
<li>WAITING 无限期等待另一个线程执行特定动作后唤醒它，也就是调用Object.wait 后会等待拥有同一个监视器锁的线程调用 notify/notifyAll来进行唤醒</li>
<li>TIMED_WAITING 有时限的等待另一个线程执行特定动作</li>
<li>TERMINATED 已经完成了执行</li>
</ol>
<h3 id="Thread-sleep"><a href="#Thread-sleep" class="headerlink" title="Thread.sleep"></a>Thread.sleep</h3><p>也就是说这是<code>挂起(suspend)</code>，作用域在线程，持有CPU。</p>
<h3 id="Object-wait-x2F-synchronized"><a href="#Object-wait-x2F-synchronized" class="headerlink" title="Object.wait/synchronized"></a>Object.wait/synchronized</h3><p>也就是说这是<code>阻塞(block)</code>，作用域在锁对象，释放CPU。</p>
<blockquote>
<p><code>wait/notify</code>是通过 JVM里的<strong>park/unpark</strong> 机制来实现的，在Linux下这种机制又是通过<strong>pthread_cond_wait/pthread_cond_signal</strong>实现。</p>
</blockquote>
<h3 id="Lock"><a href="#Lock" class="headerlink" title="Lock"></a>Lock</h3><p>也就是说这是<code>挂起(suspend)</code>，作用域在锁对象，持有CPU。</p>
<blockquote>
<p>Lock 用的是乐观锁机制。所谓乐观锁就是，每次不加锁而是假设没有冲突而去完成某项操作，如果因为冲突失败就重试，直到成功为止。</p>
</blockquote>
<h1 id="参考"><a href="#参考" class="headerlink" title="参考"></a>参考</h1><ul>
<li><a target="_blank" rel="noopener" href="https://blog.csdn.net/weixin_37641832/article/details/83217104">操作系统——CPU和内存、挂起和阻塞</a></li>
<li><a target="_blank" rel="noopener" href="https://generalthink.github.io/2019/10/10/analysis-java-object-wait-notify/">分析Java Object 中的 wait/notify</a></li>
<li><a target="_blank" rel="noopener" href="https://www.jianshu.com/p/4c1ed2048985">synchronized(this/.class/Object),synchronize方法区别</a></li>
<li><a target="_blank" rel="noopener" href="https://www.baeldung.com/java-thread-lifecycle">Life Cycle of a Thread in Java</a></li>
<li><a target="_blank" rel="noopener" href="https://xie.infoq.cn/article/4e370ded27e4419d2a94a44b3">Synchronized 和 lock 区别</a></li>
</ul>
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<p>本人跟随<a target="_blank" rel="noopener" href="https://wiki.archlinux.org/title/Installation_guide_(%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87)">Arch Linux官方安装指南</a>操作过程的一些记录。</p>
<h2 id="准备"><a href="#准备" class="headerlink" title="准备"></a>准备</h2><blockquote>
<p> 下载ISO文件并启动到 Live 环境，注意<a target="_blank" rel="noopener" href="https://wiki.archlinux.org/title/Unified_Extensible_Firmware_Interface_(%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87)/Secure_Boot_(%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87)">安全启动（Secure Boot）</a>的问题。</p>
</blockquote>
<p><a target="_blank" rel="noopener" href="https://archlinux.org/download/">官方下载地址</a></p>
<h3 id="验证启动模式-非必须"><a href="#验证启动模式-非必须" class="headerlink" title="验证启动模式(非必须)"></a>验证启动模式(非必须)</h3><p>请用下列命令列出 <a target="_blank" rel="noopener" href="https://wiki.archlinux.org/index.php/Efivars">efivars</a> 目录：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">ls /sys/firmware/efi/efivars</span><br></pre></td></tr></table></figure>
<p>目录存在，操作系统使用UEFI模式启动，反之使用传统模式启动(BIOS,CSM)。</p>
<h3 id="网络连接"><a href="#网络连接" class="headerlink" title="网络连接"></a>网络连接</h3><p><strong>安装过程需要连接互联网</strong>，Live环境默认开启DHCP，其它方式可以参考<a target="_blank" rel="noopener" href="https://wiki.archlinux.org/index.php/Installation_guide_(%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87)#%E8%BF%9E%E6%8E%A5%E5%88%B0%E5%9B%A0%E7%89%B9%E7%BD%91">连接到因特网</a>，</p>
<h3 id="更新系统时间"><a href="#更新系统时间" class="headerlink" title="更新系统时间"></a>更新系统时间</h3><figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">timedatectl set-ntp true</span><br></pre></td></tr></table></figure>
<h3 id="建立硬盘分区"><a href="#建立硬盘分区" class="headerlink" title="建立硬盘分区"></a>建立硬盘分区</h3><blockquote>
<p>使用<code>fdisk</code>分区，可以查看这篇<a target="_blank" rel="noopener" href="https://www.cnblogs.com/lsgxeva/p/9610003.html">博文</a>有详细的使用说明</p>
</blockquote>
<p>查看分区列表</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">fdisk -l</span><br></pre></td></tr></table></figure>
<p><img data-src="https://pic.liaoheng.me/hc-pic/2024/02/93503db3f240a11f738fc5c37e0287a2.png"></p>
<p>其中<code>/dev/sda</code>代表第一块物理磁盘(<code>/dev/sdb,/dev/sdc</code>与之类推)</p>
<p>操作对应磁盘(<code>/dev/sda</code>)分区</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">fdisk /dev/sda</span><br><span class="line"><span class="meta prompt_"># </span><span class="language-bash">进入fdisk应用命令行：</span></span><br><span class="line">g #如果没有分区表或者是MBR表先删除，创建一个新的空GPT分区表</span><br><span class="line">n #创建新的分区</span><br><span class="line">t #改变分区类型</span><br><span class="line">w #保存并退出</span><br></pre></td></tr></table></figure>
<p><img data-src="https://pic.liaoheng.me/hc-pic/2024/02/4811eca3d0b3a9f324247b14d39e571b.png"></p>
<p>新建分区之后需要指定分区类型，使用命令<code>t {partition number }</code>，可以参考下表配置分区：</p>