one_code_multiple_tasks

void led_task( void* pvParameters )
{
    uint8_t* pin = (uint8_t*) pvParameters;

    pinMode( *pin, OUTPUT );

    while( 1 )
    {
        digitalWrite( *pin, HIGH );

        vTaskDelay( pdMS_TO_TICKS( 497 ) );

        digitalWrite( *pin, LOW );

        vTaskDelay( pdMS_TO_TICKS( 497 ) );
    }
}

void setup()
{
   static uint8_t pin_led_1 = 13;
   xTaskCreate(
      led_task,
      "LD1",
      128,
      (void*) &pin_led_1,
      tskIDLE_PRIORITY,
      NULL );

   static uint8_t pin_led_2 = 12;
   xTaskCreate( led_task, "LD2", 128, (void*) &pin_led_2, tskIDLE_PRIORITY, NULL );

   vTaskStartScheduler();
}