#define R_PIN 11
#define G_PIN 10
#define B_PIN 9
void setup() {
Serial.begin(9600);
while (!Serial) {
}
pinMode(R_PIN, OUTPUT);
pinMode(G_PIN, OUTPUT);
pinMode(B_PIN, OUTPUT);
}
void loop() {
int val = analogSerial();
COND_RGB(val);
int sensorValue = analogRead(A0); 
  if (sensorValue > 200 && sensorValue < 900) { 
    digitalWrite(13, HIGH); 
    delay(1000); 
    digitalWrite(13, LOW); 
    delay(1000); 
  }
}
int analogSerial()
{ int val = analogRead(A0);
Serial.println(val); 
return (val);
}