void task1(void *pt)
{
  pinMode(23, OUTPUT);
  while(true)
  {
    digitalWrite(23, !digitalRead(23));
    int timeDelay = 1000;
    vTaskDelay(pdMS_TO_TICKS(timeDelay));
  }
}

void task2(void *pt)
{
  pinMode(21, OUTPUT);
  while(true)
  {
    digitalWrite(21, !digitalRead(21));
    int timeDelay = 3000;
    vTaskDelay(pdMS_TO_TICKS(timeDelay));
  }
}

void setup() {
  // put your setup code here, to run once:
  xTaskCreate(task1, "Blink 23", 1024, NULL, 1 ,NULL);
  xTaskCreate(task2, "Blink 21", 1024, NULL, 1 ,NULL);
}

void loop() {
  // put your main code here, to run repeatedly:
  
}