//****************************************************
// Ulises Gordillo Zapana - FabAcademy 2020
//****************************************************
#define pin_tx      8
#define pin_rx      7
#define pin_but     6
#define pin_buz     5
#define pin_cardio  4
#define pin_led     3
#define pin_ldr     A2
#define pin_led_car 1
#define pin_pot     0

// Function SETUP
void setup() {
  pinMode(pin_tx,INPUT);
  pinMode(pin_rx,INPUT);
  pinMode(pin_cardio,OUTPUT);
}

// Function LOOP
void loop(){
  if (!digitalRead(pin_rx)){
    digitalWrite(pin_cardio,HIGH);
    delayMicroseconds(1500);
    digitalWrite(pin_cardio,LOW);
    delayMicroseconds(1500);
  }
  else if (!digitalRead(pin_tx)){
    digitalWrite(pin_cardio,HIGH);
    delayMicroseconds(1000);
    digitalWrite(pin_cardio,LOW);
    delayMicroseconds(1000);
  }
  else{
    digitalWrite(pin_cardio,HIGH);
  }
}