ESP32 Forum

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#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "driver/gpio.h"
#include "esp_log.h"
#include "sdkconfig.h"

#define BLINK_GPIO_GREEN 25
#define BUTTON GPIO_NUM_36
#define ESP_INTR_FLAG_DEFAULT 0


void blink_task(void *pvParameter)
{
    while (1)
    {
        ESP_LOGI("test", "Restarting now.");
        vTaskDelay(1000 / portTICK_PERIOD_MS);
    }
}

static void IRAM_ATTR gpio_isr_handler()
{
    gpio_set_level(BLINK_GPIO_GREEN, 1);
}

void app_main()
{
    gpio_pad_select_gpio(BLINK_GPIO_GREEN);
    gpio_set_direction(BLINK_GPIO_GREEN, GPIO_MODE_OUTPUT);
    
    gpio_config_t btn_config;
    btn_config.intr_type = GPIO_INTR_HIGH_LEVEL;
    btn_config.mode = GPIO_MODE_INPUT;               //Set as Input
    btn_config.pin_bit_mask = (1ULL << GPIO_NUM_36); //Bitmask
    btn_config.pull_up_en = GPIO_PULLUP_DISABLE;     //Disable pullup
    btn_config.pull_down_en = GPIO_PULLDOWN_DISABLE; //Disable pulldown
    gpio_config(&btn_config);

    //install gpio isr service
    gpio_install_isr_service(ESP_INTR_FLAG_DEFAULT);

    //hook isr handler for specific gpio pin
    gpio_isr_handler_add(BUTTON, gpio_isr_handler, NULL);

    xTaskCreate(&blink_task, "blink_task", configMINIMAL_STACK_SIZE, NULL, 1, NULL);
    

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ESP_LOGI("test", "Restarting now.");

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xTaskCreate(&blink_task, "blink_task", configMINIMAL_STACK_SIZE, NULL, 1, NULL);

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static void IRAM_ATTR gpio_isr_handler()
{
    ESP_LOGI("test", "PRESSED !");
}

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ets_printf("ISR");