nrf52840 nrfx gpiote zephyr thread unresponsive

RE: nrf52840 nrfx gpiote zephyr thread unresponsive

lvh831 — Wed, 08 Nov 2023 23:43:22 GMT

Hi Kenneth,

Thank you so much for sharing the info. I couldn't use IRQ_CONNECT because I bypassed Zephyr stuff (initialization and devicetree etc.) The problem I noticed was with the scheduler. In directly using your suggestion: ISR_DIRECT_DECLARE, ISR_DIRECT_FOOTER(1) got it to work. Thanks.

RE: nrf52840 nrfx gpiote zephyr thread unresponsive

Kenneth — Wed, 08 Nov 2023 14:43:24 GMT

That is likely right, I can see from the documentation:
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/kernel/services/interrupts.html#concepts

"Many kernel APIs can be used only by threads, and not by ISRs. In cases where a routine may be invoked by both threads and ISRs the kernel provides the k_is_in_isr() API to allow the routine to alter its behavior depending on whether it is executing as part of a thread or as part of an ISR."

I have not looked at your project to see if you are already doing this though.

Kenneth

RE: nrf52840 nrfx gpiote zephyr thread unresponsive

lvh831 — Tue, 07 Nov 2023 22:57:36 GMT

Hi Kenneth,

The ncs version I'm using is 2.5 and the board is nrf52840dk_nrf52840. I tried to trace the code with ozone and noticed that as soon as I trigger the gpiote interrupt, it does switch to key1_thread which means the ISR is okay since it posts an event to this thread.

But I think it still stays there waiting for k_event_wait(..)

I attached a zip version of this code that you try to build the project again with ncs 2.5

RE: nrf52840 nrfx gpiote zephyr thread unresponsive

Kenneth — Tue, 07 Nov 2023 13:46:50 GMT

Hello,

I was not able to compile your project, likely I am using the wrong board and/or ncs version.

I think however your problem may be related to the use and description of IRQ_DIRECT_CONNECT:
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/kernel/services/interrupts.html#c.IRQ_DIRECT_CONNECT

I suggest you for instance try to use ISR_DIRECT_DECLARE(nrfx_gpiote_irq_handler) if you want to use IRQ_DIRECT_CONNECT.

Alternatively don't use IRQ_DIRECT_CONNECT, but use IRQ_CONNECT.

Kenneth