#include <SoftwareSerial.h>

SoftwareSerial mySerial (A0, A1);

const byte COLOR_WHITE = 0b111;
const byte PIN_LED_R = 0;
const byte PIN_LED_G = A2;
const byte PIN_LED_B = 1;
char color;


void setup() {
  // initialize serial communication at 9600 bits per second:
  mySerial.begin(9600);
  pinMode(PIN_LED_R, OUTPUT);
  pinMode(PIN_LED_G, OUTPUT);
  pinMode(PIN_LED_B, OUTPUT);
  displayColor(COLOR_WHITE);
}

void loop() {
  displayColor(COLOR_WHITE);
  int sensorValue = analogRead (A3);
  if (sensorValue > 440 && sensorValue < 515){ //Blue
    mySerial.println('A');
    delay(500);
  }
  else if (sensorValue > 580 && sensorValue < 650 ){ //green
    mySerial.println('B');
    delay(500);
  }
  else if (sensorValue > 520 && sensorValue < 590 ){ //red
    mySerial.println('C');
    delay(500);
  }
  else if (sensorValue > 250 && sensorValue < 300 ){ //yellow
    mySerial.println('D');
    delay(500);
  }
  else if (sensorValue > 60 && sensorValue < 170 ){ //pink
    mySerial.println('E');
    delay(500);
  }
  else {  mySerial.println('0');
    delay(500);
  }
  }


  
  
void displayColor(byte color) {

  
  digitalWrite(PIN_LED_R, !bitRead(color, 2));
  digitalWrite(PIN_LED_G, !bitRead(color, 1));
  digitalWrite(PIN_LED_B, !bitRead(color, 0));
}