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Alex J LennonAlex J Lennon
Alex J Lennon
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Alex J Lennon
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ssd1306oled: Add display of scrolling DoES logo
Signed-off-by: Alex J Lennon <Alex J Lennon>
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‎LoraOledESP32/ssd1306oled.ipynb

+248-23
Original file line numberDiff line numberDiff line change
@@ -2,14 +2,14 @@
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"cells": [
33
{
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"cell_type": "code",
5-
"execution_count": 1,
5+
"execution_count": 83,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
12-
"\u001b[34mConnecting to Serial /dev/ttyUSB2 baud=115200 \u001b[0m\n",
12+
"\u001b[34mConnecting to --port=/dev/ttyUSB0 --baud=115200 \u001b[0m\n",
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"\u001b[34mReady.\n",
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"\u001b[0m"
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]
@@ -21,27 +21,191 @@
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"execution_count": 10,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Sent 168 lines (5477 bytes) to ssd1306.py.\n"
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"Sent 147 lines (4584 bytes) to ssd1306.py.\n"
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]
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}
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],
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"source": [
36-
"%sendtofile --source ssd1306.py\n"
36+
"%sendtofile ssd1306.py\n",
37+
"\n",
38+
"# MicroPython SSD1306 OLED driver, I2C and SPI interfaces\n",
39+
"\n",
40+
"from micropython import const\n",
41+
"import framebuf\n",
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"\n",
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"\n",
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"# register definitions\n",
45+
"SET_CONTRAST = const(0x81)\n",
46+
"SET_ENTIRE_ON = const(0xa4)\n",
47+
"SET_NORM_INV = const(0xa6)\n",
48+
"SET_DISP = const(0xae)\n",
49+
"SET_MEM_ADDR = const(0x20)\n",
50+
"SET_COL_ADDR = const(0x21)\n",
51+
"SET_PAGE_ADDR = const(0x22)\n",
52+
"SET_DISP_START_LINE = const(0x40)\n",
53+
"SET_SEG_REMAP = const(0xa0)\n",
54+
"SET_MUX_RATIO = const(0xa8)\n",
55+
"SET_COM_OUT_DIR = const(0xc0)\n",
56+
"SET_DISP_OFFSET = const(0xd3)\n",
57+
"SET_COM_PIN_CFG = const(0xda)\n",
58+
"SET_DISP_CLK_DIV = const(0xd5)\n",
59+
"SET_PRECHARGE = const(0xd9)\n",
60+
"SET_VCOM_DESEL = const(0xdb)\n",
61+
"SET_CHARGE_PUMP = const(0x8d)\n",
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"\n",
63+
"# Subclassing FrameBuffer provides support for graphics primitives\n",
64+
"# http://docs.micropython.org/en/latest/pyboard/library/framebuf.html\n",
65+
"class SSD1306(framebuf.FrameBuffer):\n",
66+
" def __init__(self, width, height, external_vcc):\n",
67+
" self.width = width\n",
68+
" self.height = height\n",
69+
" self.external_vcc = external_vcc\n",
70+
" self.pages = self.height // 8\n",
71+
" self.buffer = bytearray(self.pages * self.width)\n",
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" super().__init__(self.buffer, self.width, self.height, framebuf.MONO_VLSB)\n",
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" self.init_display()\n",
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"\n",
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" def init_display(self):\n",
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" for cmd in (\n",
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" SET_DISP | 0x00, # off\n",
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" # address setting\n",
79+
" SET_MEM_ADDR, 0x00, # horizontal\n",
80+
" # resolution and layout\n",
81+
" SET_DISP_START_LINE | 0x00,\n",
82+
" SET_SEG_REMAP | 0x01, # column addr 127 mapped to SEG0\n",
83+
" SET_MUX_RATIO, self.height - 1,\n",
84+
" SET_COM_OUT_DIR | 0x08, # scan from COM[N] to COM0\n",
85+
" SET_DISP_OFFSET, 0x00,\n",
86+
" SET_COM_PIN_CFG, 0x02 if self.height == 32 else 0x12,\n",
87+
" # timing and driving scheme\n",
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" SET_DISP_CLK_DIV, 0x80,\n",
89+
" SET_PRECHARGE, 0x22 if self.external_vcc else 0xf1,\n",
90+
" SET_VCOM_DESEL, 0x30, # 0.83*Vcc\n",
91+
" # display\n",
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" SET_CONTRAST, 0xff, # maximum\n",
93+
" SET_ENTIRE_ON, # output follows RAM contents\n",
94+
" SET_NORM_INV, # not inverted\n",
95+
" # charge pump\n",
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" SET_CHARGE_PUMP, 0x10 if self.external_vcc else 0x14,\n",
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" SET_DISP | 0x01): # on\n",
98+
" self.write_cmd(cmd)\n",
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" self.fill(0)\n",
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" self.show()\n",
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"\n",
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" def poweroff(self):\n",
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" self.write_cmd(SET_DISP | 0x00)\n",
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"\n",
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" def poweron(self):\n",
106+
" self.write_cmd(SET_DISP | 0x01)\n",
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"\n",
108+
" def contrast(self, contrast):\n",
109+
" self.write_cmd(SET_CONTRAST)\n",
110+
" self.write_cmd(contrast)\n",
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"\n",
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" def invert(self, invert):\n",
113+
" self.write_cmd(SET_NORM_INV | (invert & 1))\n",
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"\n",
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" def show(self):\n",
116+
" x0 = 0\n",
117+
" x1 = self.width - 1\n",
118+
" if self.width == 64:\n",
119+
" # displays with width of 64 pixels are shifted by 32\n",
120+
" x0 += 32\n",
121+
" x1 += 32\n",
122+
" self.write_cmd(SET_COL_ADDR)\n",
123+
" self.write_cmd(x0)\n",
124+
" self.write_cmd(x1)\n",
125+
" self.write_cmd(SET_PAGE_ADDR)\n",
126+
" self.write_cmd(0)\n",
127+
" self.write_cmd(self.pages - 1)\n",
128+
" self.write_data(self.buffer)\n",
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"\n",
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"\n",
131+
"class SSD1306_I2C(SSD1306):\n",
132+
" def __init__(self, width, height, i2c, addr=0x3c, external_vcc=False):\n",
133+
" self.i2c = i2c\n",
134+
" self.addr = addr\n",
135+
" self.temp = bytearray(2)\n",
136+
" super().__init__(width, height, external_vcc)\n",
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"\n",
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" def write_cmd(self, cmd):\n",
139+
" self.temp[0] = 0x80 # Co=1, D/C#=0\n",
140+
" self.temp[1] = cmd\n",
141+
" self.i2c.writeto(self.addr, self.temp)\n",
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"\n",
143+
" def write_data(self, buf):\n",
144+
" self.temp[0] = self.addr << 1\n",
145+
" self.temp[1] = 0x40 # Co=0, D/C#=1\n",
146+
" self.i2c.start()\n",
147+
" self.i2c.write(self.temp)\n",
148+
" self.i2c.write(buf)\n",
149+
" self.i2c.stop()\n",
150+
"\n",
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"\n",
152+
"class SSD1306_SPI(SSD1306):\n",
153+
" def __init__(self, width, height, spi, dc, res, cs, external_vcc=False):\n",
154+
" self.rate = 10 * 1024 * 1024\n",
155+
" dc.init(dc.OUT, value=0)\n",
156+
" res.init(res.OUT, value=0)\n",
157+
" cs.init(cs.OUT, value=1)\n",
158+
" self.spi = spi\n",
159+
" self.dc = dc\n",
160+
" self.res = res\n",
161+
" self.cs = cs\n",
162+
" import time\n",
163+
" self.res(1)\n",
164+
" time.sleep_ms(1)\n",
165+
" self.res(0)\n",
166+
" time.sleep_ms(10)\n",
167+
" self.res(1)\n",
168+
" super().__init__(width, height, external_vcc)\n",
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"\n",
170+
" def write_cmd(self, cmd):\n",
171+
" self.spi.init(baudrate=self.rate, polarity=0, phase=0)\n",
172+
" self.cs(1)\n",
173+
" self.dc(0)\n",
174+
" self.cs(0)\n",
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" self.spi.write(bytearray([cmd]))\n",
176+
" self.cs(1)\n",
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"\n",
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" def write_data(self, buf):\n",
179+
" self.spi.init(baudrate=self.rate, polarity=0, phase=0)\n",
180+
" self.cs(1)\n",
181+
" self.dc(1)\n",
182+
" self.cs(0)\n",
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" self.spi.write(buf)\n",
184+
" self.cs(1)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"metadata": {
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"collapsed": true
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},
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"execution_count": 11,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"['boot.py', 'hmac.py', 'hotpie.py', 'ssd1306.py']\r\n"
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]
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}
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],
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"source": [
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"import os\n",
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"print(os.listdir())"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 18,
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"metadata": {},
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"outputs": [],
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"source": [
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"#https://forum.micropython.org/viewtopic.php?f=18&p=23080\n",
@@ -53,6 +217,7 @@
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"scl = Pin(15, Pin.OUT, Pin.PULL_UP)\n",
54218
"sda = Pin(4, Pin.OUT, Pin.PULL_UP)\n",
55219
"i2c = I2C(scl=scl, sda=sda, freq=450000)\n",
220+
"\n",
56221
"o = ssd1306.SSD1306_I2C(128, 64, i2c, addr=0x3c)\n",
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"\n",
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"o.fill(0)\n",
@@ -63,14 +228,16 @@
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},
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{
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"cell_type": "code",
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"execution_count": 4,
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"execution_count": 80,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"[60]\r\n"
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"Traceback (most recent call last):\n",
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" File \"<stdin>\", line 1, in <module>\n",
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"NameError: name 'i2c' is not defined\n"
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]
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}
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],
@@ -80,12 +247,22 @@
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},
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{
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"cell_type": "code",
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"execution_count": 27,
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"metadata": {
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"collapsed": true
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},
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"outputs": [],
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"execution_count": 81,
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"metadata": {},
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"outputs": [
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"Traceback (most recent call last):\n",
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" File \"<stdin>\", line 3, in <module>\n",
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"NameError: name 'o' is not defined\n"
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]
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}
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],
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"source": [
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"import framebuf\n",
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"\n",
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"o.fill(0)\n",
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"for i in range(128):\n",
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" o.framebuf.fill_rect(1, 3, i, 34, 1)\n",
@@ -114,12 +291,60 @@
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": true
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},
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"outputs": [],
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"source": []
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"execution_count": 84,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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".......\u001b[34m\n",
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"\n",
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"*** Sending Ctrl-C\n",
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"\n",
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"\u001b[0m"
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]
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},
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"Traceback (most recent call last):\n",
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" File \"<stdin>\", line 28, in <module>\n",
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"KeyboardInterrupt: \n"
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]
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}
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],
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"source": [
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"# Show the DoES logo. Scrolls across the screen\n",
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"\n",
321+
"import ssd1306\n",
322+
"import framebuf\n",
323+
"from machine import I2C, Pin\n",
324+
"rst = Pin(16, Pin.OUT)\n",
325+
"rst.value(1)\n",
326+
"scl = Pin(15, Pin.OUT, Pin.PULL_UP)\n",
327+
"sda = Pin(4, Pin.OUT, Pin.PULL_UP)\n",
328+
"i2c = I2C(scl=scl, sda=sda, freq=450000)\n",
329+
"display = ssd1306.SSD1306_I2C(128, 64, i2c, addr=0x3c)\n",
330+
"#o = ssd1306.SSD1306_I2C(128, 64, i2c, addr=0x3c)\n",
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"\n",
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"buffer = bytearray(\n",
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" b'\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xe7\\xe0\\x30\\x0f\\xff\\xf0\\x07\\x00\\xe0\\x30\\x03\\xff\\xf0\\x06\\x18\\xe0\\x31\\xe3\\xe1\\xf3\\xfe\\x3c\\xe0\\x31\\xf1\\xc0\\x73\\xfe\\x3f\\xe0\\x31\\xf1\\x8c\\x73\\xff\\x07\\xe0\\x31\\xf1\\x9e\\x30\\x07\\x80\\xe0\\x31\\xf1\\x1e\\x30\\x0f\\xf0\\x60\\x31\\xf1\\x1e\\x33\\xff\\xfc\\x60\\x31\\xf3\\x9e\\x33\\xfe\\x7e\\x60\\x31\\xc3\\x8e\\x73\\xfe\\x3c\\x60\\x30\\x07\\xc0\\x70\\x07\\x00\\xe0\\x30\\x1f\\xe1\\xf0\\x07\\x81\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x3f\\xff\\xff\\xff\\xff\\xff\\xe0\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x40\\x00\\x00\\x00\\x00\\x60\\x30\\x00\\x00\\x00\\x00\\x00\\x60\\x30\\x48\\x8c\\x15\\x86\\x0c\\x60\\x30\\x49\\xb6\\xe6\\xcd\\x9b\\x60\\x30\\x49\\xb2\\xc4\\x58\\xb3\\x60\\x30\\x4d\\x3e\\xc4\\x58\\xb3\\x60\\x30\\x47\\x30\\xc4\\x49\\xb3\\x60\\x3f\\x46\\x1e\\xc7\\xcf\\x1e\\x60\\x00\\x00\\x00\\x04\\x00\\x00\\x00\\x00\\x00\\x00\\x04\\x00\\x00\\x00\\x00\\x00\\x00\\x04\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00'\n",
334+
")\n",
335+
"# FRAMEBUF_MHLSB = 3\n",
336+
"fb = framebuf.FrameBuffer(buffer, 56, 64,3)\n",
337+
"\n",
338+
"while True:\n",
339+
" for x in range(0,128-56):\n",
340+
" display.fill(0)\n",
341+
" display.blit(fb, x, 0)\n",
342+
" display.show()\n",
343+
" for x in range(0,128-56):\n",
344+
" display.fill(0)\n",
345+
" display.blit(fb, (128-56-x), 0)\n",
346+
" display.show()\n"
347+
]
123348
}
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],
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"metadata": {

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