why does SDK not have the API to use GPIO latch, LDETECT mode

[Haruki Kawakami]

Hi,

I'm using nRF52832 and LDETECT mode for GPIOTE PORT event to detect multiple interruption.

Even though LDETECT mode is described in the product sheet page 112 and GPIO register has DETECTMODE register, why SDK of any version doesn't have the API to use LDETECT mode? Is there some bug for LEDTECT mode?

If there is no big reason, would you check my change for the library is correct?

Changed library is below. The change is calling nrf_gpio_pin_latch_clear(pin) at 758 line.

Of course when the pin configured as GPIOTE PORT event triggers interruption, I disable the GPIOTE PORT event for the pin and put to the app_scheduler the execution to clear interruption in the registered application handler. After clearing interrupt factor, I enable the GPIOTE PORT event for the pin.

nrf_drv_gpiote.c

Thank you.

[Hung Bui]

Hi Haruki,

Most likely it was previously we make the nrf_drv_gpiote library compatible with nRF51 and latch and LDETECT was not included in the library. We haven't updated the library since then.

I would assume you should clear LATCH even for those pin doesn't has a handler, so nrf_gpio_pin_latch_clear() should be moved out of that. I assume you use LDETECT mode ?

[Haruki Kawakami]

Hi Hung,

I got it. Maybe it should be updated using #ifdef NRF52.

My all pins for GPIOTE have handler, so it is not problem. But I will move out of if().

Yes, I use LDETECT mode.