#include <BluetoothSerial.h>

BluetoothSerial myBT;

#define Red 12
#define Green 13
#define Blue 14

void setup() {
  pinMode(Red, OUTPUT);
  pinMode(Green, OUTPUT);
  pinMode(Blue, OUTPUT);

  myBT.begin("ESP32-BT");

  // Start with all LEDs OFF
  digitalWrite(Red, LOW);
  digitalWrite(Green, LOW);
  digitalWrite(Blue, LOW);
}

void loop() {
  if (myBT.available()) {
    char cmd = myBT.read();

    switch (cmd) {
      case 'R':
        digitalWrite(Red, HIGH);
        digitalWrite(Green, LOW);
        digitalWrite(Blue, LOW);
        break;

      case 'G':
        digitalWrite(Red, LOW);
        digitalWrite(Green, HIGH);
        digitalWrite(Blue, LOW);
        break;

      case 'B':
        digitalWrite(Red, LOW);
        digitalWrite(Green, LOW);
        digitalWrite(Blue, HIGH);
        break;

      case '0':
        digitalWrite(Red, LOW);
        digitalWrite(Green, LOW);
        digitalWrite(Blue, LOW);
        break;

      case '1':
        digitalWrite(Red, HIGH);
        digitalWrite(Green, HIGH);
        digitalWrite(Blue, HIGH);
        break;

      default:
        break;
    }
  }
}