#include <SoftwareSerial.h>

SoftwareSerial mySerial(5, 1);

const int ledPin = 10;
const int buttonPin = 9;

bool state;
bool previousState;

void setup() {
Serial.begin(9600);  
pinMode (ledPin, OUTPUT);
pinMode (buttonPin, INPUT);
state = false;
previousState = state; 
}

void loop() {
  if (digitalRead(buttonPin)) {
    if (!previousState) {
      state = true;
      Serial.println("LED ON");
    }
  } else {
    if (previousState) {
      state = false; 
      Serial.println("LED OFF");
    }
  }
  
  previousState = state;
  
  if (state) {
    digitalWrite(ledPin, LOW);
  } else {
    digitalWrite(ledPin, HIGH);
  }
}