Got GPIO Interrupt even pin state doesn't change

RE: Got GPIO Interrupt even pin state doesn't change

ErwinCes — Wed, 14 Sep 2022 13:01:08 GMT

I guess I found the problem. We do an ADC with AIN0 that uses also pin 4. I still have to verify it but when I comment the ADC out, the interrupt is not triggered anymore.

When I have the complete solution I can post it.

RE: Got GPIO Interrupt even pin state doesn't change

Sigurd — Wed, 14 Sep 2022 12:57:56 GMT

Hi,

[quote user="ErwinCes"]But that's different, right?[/quote]

Correct.

What nRF Connect SDK(NCS) version are you on?

Could you try to apply this fix for the function gpio_nrfx_pin_configure(), and see if that improves anything?

https://github.com/nrfconnect/sdk-zephyr/commit/4b3fe99b83e393777dedc4200c7209fcdf31a77f

RE: Got GPIO Interrupt even pin state doesn't change

ErwinCes — Wed, 14 Sep 2022 12:09:58 GMT

I veryfied again that pin 4 of port 0 is just used for our RTC interrupt. There is just another 0x4 for the internal RTCs. But that's different, right?

rtc0: rtc@14000 {
                compatible = "nordic,nrf-rtc";
                reg = < 0x14000 0x1000 >;
                cc-num = < 0x4 >;
                interrupts = < 0x14 0x1 >;
                status = "okay";
                clock-frequency = < 0x8000 >;
                prescaler = < 0x1 >;
                label = "RTC_0";
            };
            rtc1: rtc@15000 {
                compatible = "nordic,nrf-rtc";
                reg = < 0x15000 0x1000 >;
                cc-num = < 0x4 >;
                interrupts = < 0x15 0x1 >;
                status = "okay";
                clock-frequency = < 0x8000 >;
                prescaler = < 0x1 >;
                label = "RTC_1";
            };

RE: Got GPIO Interrupt even pin state doesn't change

Sigurd — Wed, 14 Sep 2022 12:01:16 GMT

Hi,

[quote user=""]Can it be that in the nWP case P0.4 is used somehow internally from another processor module which would then trigger the interrupt?[/quote]

That could be. Could you check the compiled devicetree, and see if pin 4 is used for something else?

In VS Code:

Alternatively, check the file your_build_folder\zephyr\ zephyr.dts