Which nrfx timers are OK/not OK using nRF52832 in Zephyr?

[Nick_RA]

I use a hardware timer to capture/compare incoming pulses using PPI to trigger the captures from GPIOTE. I previously wrote the same application for nRF52832 on the old SDK using TIMER4 and it works well.

Am now writing code using nRF54L15 which works OK. But I need to port the same code to nRF52832. If I run the same code on 52832 I get kernel panic.

Before I spend too much time chasing the panic I want to verify which timers I can safely use on the nRF52832? Note I'm concurrently using a Zephyr timer k_timer_start() for other purposes.

For info, this is the panic

ASSERTION FAIL [pin_has_trigger(p_instance, pin)] @ WEST_TOPDIR/modules/hal/nordic/nrfx/drivers/src/nrfx_gpiote.c:487
[00:00:00.003,265] <err> os: r0/a1:  0x00000004  r1/a2:  0x000001e7  r2/a3:  0x00000001
[00:00:00.003,295] <err> os: r3/a4:  0x00000004 r12/ip:  0x00000004 r14/lr:  0x00024dd9
[00:00:00.003,295] <err> os:  xpsr:  0x01000000
[00:00:00.003,326] <err> os: Faulting instruction address (r15/pc): 0x0002d2ee
[00:00:00.003,356] <err> os: >>> ZEPHYR FATAL ERROR 4: Kernel panic on CPU 0
[00:00:00.003,417] <err> os: Current thread: 0x20002ad0 (main)
[00:00:00.064,086] <err> os: Halting system

[Turbo J]

Error message says nothing about timers. Looks to me rather like you did not read the manual and tried to use GPIOTE on a Port 2 pin.

[Nick_RA]

Turbo J said:

Error message says nothing about timers. Looks to me rather like you did not read the manual and tried to use GPIOTE on a Port 2 pin.

Looks to me rather like you didn't read my post either. I said I wanted to make sure I had no timer conflicts before chasing down the kernel panic. 

nRF52832 doesn't have a Port 2 anyways... apart from that you've nailed it.