#include <SoftwareSerial.h>
#define rxPin 0
#define txPin A1

#define LED 7
#define button 8

int rxbuffer;

SoftwareSerial serial(rxPin, txPin);

void setup() {
  
  pinMode(rxPin, INPUT);
  pinMode(txPin, OUTPUT);

  pinMode(LED, OUTPUT);
  digitalWrite(LED, LOW);

  serial.begin(9600);

}

void loop(){

  rxbuffer = serial.read();

  if(rxbuffer == '2'){
      digitalWrite(LED, HIGH);
  } else if(rxbuffer == '1') {    
      digitalWrite(LED,LOW);
  }
  
delay(1000);
}