2 GPIOTE Interrupts, Only one of the handler functions being hit

[Wael]

Hello:

I dont seem to understand what the problem is. I have 2 external ICs, one is an IMU and the other is a CDC. Both have interrupt pins connected to the nordic nRF52832 pins 12 and 26. I configure the pins as shown bellow.

nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_HITOLO(true);

err_code = nrf_drv_gpiote_in_init(CDC_INT_PIN, &in_config, in_pin_handler);

APP_ERROR_CHECK(err_code);

nrf_drv_gpiote_in_config_t in_config2 = GPIOTE_CONFIG_IN_SENSE_LOTOHI(true);

in_config2.pull = NRF_GPIO_PIN_PULLDOWN;

err_code = nrf_drv_gpiote_in_init(IMU_INT1_PIN, &in_config2, IMU_INT1_pin_handler);

APP_ERROR_CHECK(err_code);

nrf_drv_gpiote_in_event_enable(IMU_INT1_PIN, true);

nrf_drv_gpiote_in_event_enable(CDC_INT_PIN, true);

I can see the in_pin_handler being hit while the IMU_INT1_pin_handler does not. I do not have any other high accuracy events configured. The IMU interrupt is triggered aprox. at 104 Hz while the CDC is at 100 Hz. Can anyone please help explain what I am doing wrong here. Your time and effort will be greatly appreciated.

Regards,

[Sigurd]

If INT signal is high before the gpiote is set-up, the interrupt will never trigger because there is no transition from low to high after the gpiote is enabled.