//Exercise 1 (FreeRTOS)
// Task 1: Blink LED (sourcing mode) at pin D32 every 500ms
// Task 2: If BTNA (internal pull-up enabled) at pin D21 is pressed send message "BTNA" to the serial monitor
// Task 3: If BTNB (external pull-down) at pin D2 is pressed send message "BTNB" to the serial monitor
// Priority Task 1 > (Task 2 = Task 3)

#define LED 32
int BTNA = 21;
unsigned char BTNB = 2;

void setup() {
  Serial.begin(115200);
  xTaskCreatePinnedToCore(Task1,"Task 1", 1024, NULL, 3, NULL, 1);
  xTaskCreatePinnedToCore(Task2,"Task 2", 1024, NULL, 2, NULL, 1);
  xTaskCreatePinnedToCore(Task3,"Task 3", 1024, NULL, 2, NULL, 1);
}

void loop() { } 

void Task1 (void *pt){
  pinMode(LED, OUTPUT);
  digitalWrite(LED, LOW); //LED OFF
  for(;;){
    digitalWrite(LED, HIGH);  //LED ON
    delay(500);
    digitalWrite(LED, LOW);   //LED OFF
    delay(500);
  }
}

void Task2(void *pt){
  pinMode(BTNA, INPUT_PULLUP);
  while(1){
    if(digitalRead(BTNA)==0)
      Serial.println("BTNA");
    //digitalRead(BTNA)==0? Serial.println("BTNA"):Serial.println("High signal at BTNA");
    
    delay(50);
  }
}

void Task3(void *pt){
  pinMode(BTNB, INPUT);
  for(;;){
    if(digitalRead(BTNB)==1){
      Serial.println("BTNB");
    }
    delay(50);
  }
}