Slave Code

//Slave Code

int status;
#define ledPin 13

void setup() {
  pinMode(13, OUTPUT);
  Serial.begin(115200);
}

void loop() {
    if (Serial.available() > 0) {
      status = Serial.read();
      checkStatus();
  }
}

void checkStatus() {
  if (status == 1) {
    Serial.println("LED ON");
    digitalWrite(ledPin, HIGH);
  }
  else if (status == 0) {
    Serial.println("LED OFF");
    digitalWrite(ledPin, LOW);
  }
  else {
    Serial.println("-----ERROR-----");
  }
}