//  ***  meierinc copyright 2022  ***  //
//  ***  [email protected] ***  //

// struct_ptr version

//  ***  includes  ***  //

//  ***  defines  ***  //

//  *** const   ***  //

struct LedFlash 
{
  byte pin;
  int duration;
};


// structure initialize //
LedFlash led_12 = {12, 3000};
LedFlash led_13 = {13, 6000};
LedFlash led_14 = {14, 1000};

//LedFlash* sp_led_12 = &led_12;
//LedFlash* sp_led_13 = &led_13;
//LedFlash* sp_led_14 = &led_14;

//void* vp_led_12 = (void*) &led_12;
//void* vp_led_13 = (void*) &led_13;
//void* vp_led_14 = (void*) &led_14;

//  ***  codes  ***  //

void task(void* ptr)
{
  // structure converter
  LedFlash* led_ptr = (LedFlash*)ptr;

  pinMode(led_ptr->pin, OUTPUT);

  while (true)
  {
    digitalWrite(led_ptr->pin, !digitalRead(led_ptr->pin));
    // delay(1000);
    vTaskDelay(led_ptr->duration);  // Muti-task version delay.
  }
}

void setup() {
  // Serial
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");



  // requests args:
  //    function's defination,
  //    "nickname",
  //    requests memory space(byte), 
  //    input argument or NULL,
  //    priority,
  //    handle (requests a pointer) that operate the task () or NULL
  xTaskCreate(task, "blink 12", 1024, (void*) &led_12, 1, nullptr);
  xTaskCreate(task, "blink 13", 1024, (void*) &led_13, 1, nullptr);
  xTaskCreate(task, "blink 14", 1024, (void*) &led_14, 1, nullptr);

}

void loop()
{

}