/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO 
  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN takes care 
  of use the correct LED pin whatever is the board used.
  If you want to know what pin the on-board LED is connected to on your Arduino model, check
  the Technical Specs of your board  at https://www.arduino.cc/en/Main/Products
  
  This example code is in the public domain.

  modified 8 May 2014
  by Scott Fitzgerald
  
  modified 2 Sep 2016
  by Arturo Guadalupi

  modified 30 Apr 2018
  by David Arias

  Change of to pin 0, corresponding to pin 13 in the Attiny44a.
*/
#include <SoftwareSerial.h>
// Definitions
#define rxPin A2 //Pin 13 for ATiny44. Receiving pin
#define txPin A1 //Pin 12 for ATiny44. Transmiting pin
#define button A3

SoftwareSerial mySerial(rxPin, txPin);

int buttonTrigger = 0;
char ceroSignal = '0';

// the setup function runs once when you press reset or power the board
void setup() {

   mySerial.begin(9600);
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(rxPin, INPUT);
  pinMode(txPin, OUTPUT);
  pinMode(button, INPUT);
  //pinMode(button, INPUT_PULLUP);
}

// the loop function runs over and over again forever
void loop() {

buttonTrigger = digitalRead(button); 

if (buttonTrigger == LOW){

  mySerial.println(ceroSignal);

  digitalWrite(A0, HIGH);

  delay(200);
}
else{
  digitalWrite(A0, LOW);
  //mySerial.println(buttonTrigger);
  //delay(500);
}
}