GPIO interrupt not working

[HEckardt]

Dear ESP-Forum Members,

for my project I need a GPIO interrupt (pressed botton). I selected the GPIO25 pin connect it though the switch to the ground. The negative edge should start the isr. Message from the GPIO configurator:

I (2283) gpio: GPIO[25]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:2

I adapted the ESP-example-code for my needs:

Code: Select all

#define GPIO_OK_Button 25  
#define ESP_INTR_FLAG_DEFAULT 0

static const char *TAG = "HE_Ctrl";

static bool ok_pressed;

static QueueHandle_t gpio_evt_queue = NULL;

static void IRAM_ATTR gpio_isr_handler(void* arg)
{
	ESP_LOGI(TAG, "gpio_isr_before queuesend");
	ESP_LOGI(TAG, "isr_arg: %lX", (uint32_t) arg);
    uint32_t gpio_num = (uint32_t) arg;
    xQueueSendFromISR(gpio_evt_queue, &gpio_num, NULL);
	ESP_LOGI(TAG, "gpio_isr_after queuesend");

}

static void OK_task(void* arg)
{
    uint32_t io_num;
    for(;;) {
        if(xQueueReceive(gpio_evt_queue, &io_num, portMAX_DELAY)) {
			vTaskDelay(100 / portTICK_PERIOD_MS);
			printf("GPIO[%"PRIu32"] intr, val: %d\n", io_num, gpio_get_level(io_num));
			ok_pressed = true;
        }
    }
}

static void init_ok_button(void)
{
	ok_pressed = false;
    //zero-initialize the config structure.
    gpio_config_t io_conf = {};
    io_conf.intr_type = GPIO_INTR_NEGEDGE;
    io_conf.pin_bit_mask = 1ULL<<GPIO_OK_Button;
    io_conf.mode = GPIO_MODE_INPUT;
    io_conf.pull_up_en = 1;
    gpio_config(&io_conf);


	ESP_LOGI(TAG, "BitMask: %LX", io_conf.pin_bit_mask);

	
    // create a queue to handle gpio event from isr
    gpio_evt_queue = xQueueCreate(10, sizeof(uint32_t));
    // start gpio task
    xTaskCreate(OK_task, "gpio_task_example", 2048, NULL, 10, NULL);

    //install gpio isr service
    gpio_install_isr_service(ESP_INTR_FLAG_DEFAULT);
    //hook isr handler for specific gpio pin
    gpio_isr_handler_add(GPIO_OK_Button, gpio_isr_handler, (void*) GPIO_OK_Button);


    printf("Minimum free heap size: %"PRIu32" bytes\n", esp_get_minimum_free_heap_size());
	

	ESP_LOGI(TAG, "gpio_initialized");

}

But when I press the switch to trigger the isr, the ESP32 is restarting and the monitor get this printout:

abort() was called at PC 0x40083043 on core 0


Backtrace: 0x40081ac6:0x3ffb1770 0x40089d6d:0x3ffb1790 0x40091686:0x3ffb17b0 0x40083043:0x3ffb1820 0x40083181:0x3ffb1850 0x400831fa:0x3ffb1870 0x4014a23a:0x3ffb18a0 0x4014d3a9:0x3ffb1bc0 0x401597d1:0x3ffb1bf0 0x4009004d:0x3ffb1c20 0x4008379d:0x3ffb1c70 0x400838b2:0x3ffb1ca0 0x40083942:0x3ffb1cd0 0x40082e35:0x3ffb1d00 0x40088b3f:0x3ffbcd00 0x400d370b:0x3ffbcd20 0x4008af41:0x3ffbcd40 0x4008c74d:0x3ffbcd60




ELF file SHA256: 43476a0f78228a12

Rebooting...
ets Jun 8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)

I added some ESP_LOGs in the isr. These outputs are not visible, so the problem accurs befor the isr is starting.

I have no idea what could be wrong. I assume it could be a storage problem.

I attached the complete monitor printout. Please help me to interprete the error message to find the root cause for the problem.

Thank you for your support.

Greetings
Henry

[mikemoy]

remove the ESP_LOGI's from the ISR handler and see what happens.

[HEckardt]

Hi mikemoy,

it is the same. I inserted the LOG output, when I recognized, that the isr failed.

greetings
Henry