ESP32 Forum

Code: Select all

/* 
Can run 'make menuconfig' to choose the GPIO to blink,  or you can edit the following line and set a number here.
*/
#define  BLINK_GPIO  GPIO_NUM_2     // 


void blink_task(void *pvParameter)
{
    /* 
    Configure the IOMUX register for pad BLINK_GPIO (some pads are muxed to GPIO on reset already, but some default to other
    functions and need to be switched to GPIO. Consult the Technical Reference for a list of pads and their default functions.)
    */
    gpio_pad_select_gpio(BLINK_GPIO);

    /* Set the GPIO as a push/pull output */ 
    gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);
    gpio_set_pull_mode(BLINK_GPIO, GPIO_PULLUP_ONLY);

    while(1) 
        {
        /* Blink off (output low) */
        gpio_set_level(BLINK_GPIO, 0);

        vTaskDelay(1000 / portTICK_PERIOD_MS);
        
        /* Blink on (output high) */
        gpio_set_level(BLINK_GPIO, 1);

        vTaskDelay(1000 / portTICK_PERIOD_MS);
        }
}


//void app_main()
extern "C" void app_main(void)
{
xTaskCreate(&blink_task, "blink_task", configMINIMAL_STACK_SIZE, NULL, 5, NULL);
}