byte LED0pin = 23;
byte LED1pin = 21;

void task1(void *pt)
{
  byte led = *(byte *)pt;
  pinMode(led, OUTPUT);
  //gpio_set_direction(led,GPIO_MODE_OUTPUT);
  while (1)
  {
    //gpio_set_level(led,!gpio_get_level(led));
    digitalWrite(*(byte *)pt, !digitalRead(*(byte *)pt));
    vTaskDelay(1000 / portTICK_PERIOD_MS);
  }
}

void task2(void *pt)
{
  byte led = *(byte *)pt;
  pinMode(led, OUTPUT);
  //gpio_set_direction(led,GPIO_MODE_OUTPUT);
  while (1)
  {
    //gpio_set_level(led,!gpio_get_level(led));
    digitalWrite(*(byte *)pt, !digitalRead(*(byte *)pt));
    vTaskDelay(3000 / portTICK_PERIOD_MS);
  }

}

void setup() {
  // put your setup code here, to run once:
  xTaskCreate(task1, "blink 20", 1024, (void *)&LED0pin, 1, NULL);
  xTaskCreate(task2, "blink 21", 1024, (void *)&LED1pin, 2, NULL);
}

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