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#define USE_GPIO_ISR_SERVICE // sometime skip interrupts when use interrupt service

IRAM_ATTR static void gpio_isr_handler(void* arg)
{
#ifndef USE_GPIO_ISR_SERVICE
	uint32_t gpio_intr_status = READ_PERI_REG(GPIO_STATUS_REG);   //read status to get interrupt status for GPIO0-31
	uint32_t gpio_intr_status_h = READ_PERI_REG(GPIO_STATUS1_REG);//read status1 to get interrupt status for GPIO32-39
	SET_PERI_REG_MASK(GPIO_STATUS_W1TC_REG, gpio_intr_status);    //Clear intr for gpio0-gpio31
	SET_PERI_REG_MASK(GPIO_STATUS1_W1TC_REG, gpio_intr_status_h); //Clear intr for gpio32-39
#endif
	//myCode
	BaseType_t mustYield = pdFALSE;
	vTaskNotifyGiveFromISR(my_task_handle, &mustYield);
	if (mustYield)
		portYIELD_FROM_ISR();
}

void init(void) {
	esp_err_t ret = ESP_OK;
	gpio_config_t io_conf;
	//interrupt of rising edge
	io_conf.intr_type = GPIO_INTR_NEGEDGE;
	io_conf.pin_bit_mask = ((uint64_t)1 << ADC_PIN_nDR);
	io_conf.mode = GPIO_MODE_INPUT;
	io_conf.pull_down_en = 0;
	io_conf.pull_up_en = 0;
	ret |= gpio_config(&io_conf);

	xTaskCreate(dsp_task, "my_task", 4096, NULL, MY_TASK_PRIO, &my_task_handle);

#ifdef USE_GPIO_ISR_SERVICE
	ret |= gpio_install_isr_service(ESP_INTR_FLAG_IRAM);
	gpio_isr_handler_add(ADC_PIN_nDR, gpio_isr_handler, (void*)ADC_PIN_nDR);
#else
	gpio_intr_enable(ADC_PIN_nDR);
	gpio_set_intr_type(ADC_PIN_nDR, GPIO_INTR_NEGEDGE);
	gpio_isr_register(gpio_isr_handler, NULL, ESP_INTR_FLAG_IRAM, NULL);
#endif
}