Create rn52_oled.ino

Author: seanstar12

rn52_oled.ino

@@ -0,0 +1,185 @@
+#include <SPI.h>
+#include <Wire.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <HardwareSerial.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+
+/* RN-52 Bits for S%, 1EF6
+  My bits: 001 1110 1111 0110 -> to HEX -> 0x1EF6
+           Set with "S%,1EF6"
+
+  [0] Bit 0  - Enable AVRCP
+  [1] Bit 1  - Enable reconnect on power-on
+  [1] Bit 2  - bluetooth discoverable on start
+  [0] Bit 3  - Coded indicators 
+  
+  [1] Bit 4  - Reboot after disconnect
+  [1] Bit 5  - Mute vol up/down tones
+  [1] Bit 6  - Enable voice command on PIO4
+  [1] Bit 7  - Disable system tones
+  
+  [0] Bit 8  - Power off after pairing timeout
+  [1] Bit 9  - Reset after power off
+  [1] Bit 10 - Enable list reconnect after panic
+  [1] Bit 11 - Enable latch even indicator PIO2 (used for holding interrupt low)
+  
+  [1] Bit 12 - Enable track change event
+  [0] Bit 13 - Enable tones playback at fixed vol
+  [0] Bit 14 - Enable auto-accept
+*/
+
+#define OLED_RESET 4
+Adafruit_SSD1306 display(OLED_RESET);
+
+#define DELTAY 2
+#define HEART 23
+#define SEN 22
+#define LED 2
+
+void setup()   {
+  Serial.begin(38400);
+  Serial2.begin(9600);
+  Serial4.begin(38400);
+
+  Serial4.println("Q");
+  delay(100);
+
+  pinMode(SEN, INPUT);
+  pinMode(HEART, OUTPUT);
+  pinMode(LED, OUTPUT);
+  pinMode(30, INPUT);
+
+  // interrupt for rn-52 pin 3.
+  attachInterrupt(30, change, FALLING);
+  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
+
+  digitalWrite(LED, HIGH);
+  digitalWrite(HEART, HIGH);
+  delay(1000);
+  digitalWrite(LED, LOW);
+  digitalWrite(HEART, LOW);
+
+  delay(1000);
+  display.clearDisplay();
+  display.setTextSize(1);
+  display.setTextColor(WHITE);
+  display.println("Initializing ...");
+  display.display();
+  Serial.println("My Ports are Ready");
+}
+
+String meta = "";
+
+void loop() {
+  _time = millis();
+  char sequenceBytes[80];
+  char checkSum;
+  char serialByte;
+  String resp;
+  
+  delay(1000);
+  digitalWrite(23, digitalRead(30)); // 30 -> pin 3 from rn-52
+  //if (!digitalRead(30)) {
+  //  change();
+  //}
+}
+
+void change() {
+  long stat = getStatus();
+  if (stat) {
+    meta = getMetaData();
+    display.clearDisplay();
+    display.setCursor(0,0);
+    display.print(trackInfo("Title"));
+    display.setCursor(0,24);
+    display.print(trackInfo("Artist"));
+    display.setCursor(0,36);
+    display.print(trackInfo("Album"));
+    display.display();
+    
+  }
+
+  while (Serial4.available()) {
+    char q = Serial4.read();
+  }
+}
+
+String trackInfo(String type) {
+  int n = meta.indexOf(type) + type.length() + 1;
+  String _meta;
+
+  if (n != -1) {
+    _meta = meta.substring(n);
+    n = _meta.indexOf('\n');
+    _meta = _meta.substring(0, n);
+  }
+  else {
+    _meta = "";
+  }
+
+  Serial.println(_meta);
+  return _meta;
+}
+
+short getStatus() {
+  short stat = 0;
+  char c;
+  
+  while (Serial4.available()) {
+    char q = Serial4.read();
+  }
+  delay(50);
+  
+  Serial4.println("Q");
+  while(Serial4.available() == 0);
+  
+  while (c != '\r') {
+    while (Serial4.available() == 0) {
+      delay(5);
+    }
+    
+    c = Serial4.read();
+
+    if (c >= '0' && c <= '9') {
+      stat *= 16;
+      stat += (c - '0');
+    }
+    else if (c >= 'A' && c <= 'F') {
+      stat *= 16;
+      stat += (c - 'A') + 10;
+    }
+  }
+
+  Serial.println(stat, HEX);
+  return stat;
+}
+
+String getMetaData() {
+  String _meta;
+  int i = 6;
+  long count;
+  
+  while (Serial4.available() > 0) {
+    char q = Serial4.read();
+  }
+  delay(100);
+  
+  Serial4.println("AD");
+
+  while(Serial4.available() == 0);
+
+  while(i != 0) {
+    if (Serial4.available() > 0) {
+      char c = Serial4.read();
+      count = millis();
+      _meta += c;
+      if (c == '\n') i--;
+    }
+    if ((millis() - count) > 500) i--;
+  }
+
+  meta = _meta;
+  return meta;
+}