ESP32 Deep Sleep Interrupt Detect Without Wake

main.c

#include "esp_system.h"
#include "esp_sleep.h"
#include "esp_log.h"
#include "driver/rtc_io.h"
#include "soc/rtc_io_struct.h"

static const char *TAG = "INT_DETECT";

#define INT_PIN GPIO_NUM_0

RTC_DATA_ATTR int counter;

static bool is_interrupt_triggered()
{
    int rtcio_num = rtc_io_number_get(INT_PIN);
    bool triggered = (RTCIO.status.status & BIT(rtcio_num));
    if (triggered) {
        // Clear
        RTCIO.status_w1tc.w1tc = BIT(rtcio_num);
    }
    return triggered;
}

void app_main(void)
{
    if (esp_reset_reason() == ESP_RST_DEEPSLEEP)
    {
        ++counter;
        if(is_interrupt_triggered())
        {
            ESP_LOGI(TAG, "Interrupt was triggered!");
            counter = 0;
        }
    }
    else
    {
        ESP_LOGI(TAG, "Starting...");
        ESP_ERROR_CHECK( rtc_gpio_init(INT_PIN) );
        ESP_ERROR_CHECK( rtc_gpio_set_direction(INT_PIN, RTC_GPIO_MODE_INPUT_ONLY) );
        ESP_ERROR_CHECK( rtc_gpio_pulldown_dis(INT_PIN) );
        ESP_ERROR_CHECK( rtc_gpio_pullup_en(INT_PIN) );
        int rtcio_num = rtc_io_number_get(INT_PIN);
        RTCIO.pin[rtcio_num].wakeup_enable = 0;
        RTCIO.pin[rtcio_num].int_type = GPIO_INTR_NEGEDGE;
        counter = 0;
    }

    ESP_LOGI(TAG, "Counter: %d", counter);

    esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
    esp_deep_sleep(2ULL * 1000 * 1000);
}