nRF52832 dcdc stops at 1.2V

RE: nRF52832 dcdc stops at 1.2V

Håkon Alseth — Fri, 13 Oct 2023 08:28:30 GMT

Hi,

I'm glad to hear that the problem was solved, and thank you for posting feedback on what the root-cause of the issue was. That's highly appreciated. Hope you have a wonderful weekend!

Kind regards,

Håkon

RE: nRF52832 dcdc stops at 1.2V

Drago Matt — Fri, 13 Oct 2023 07:39:06 GMT

Hi,

I managed to get call stack, but the only visible function was idle(); After that I found out, that called sleep function pm_power_state_force(0, (struct pm_state_info){PM_STATE_SOFT_OFF, 0, 0}); was not properly executed. After zephyr upgrade from 2.7 to newer one solves the problem. I get a tip from https://github.com/zephyrproject-rtos/zephyr/issues/41911 where similar issue is described.

Thanks

RE: nRF52832 dcdc stops at 1.2V

Håkon Alseth — Wed, 04 Oct 2023 13:36:38 GMT

Hi,

If you let it run until it stops responding, you can attach a debugger to a running target and see where it is executing code from.

You can for instance use Segger Ozone to attach to a running target:

[quote user="Drago Matt"]I managed to verify some mcu register address and it looks like, that fw is spinning in IDLE mode and waiting for events/interrupts. [/quote]

Do you have a call stack to share or cpu register content?

Kind regards,

Håkon

RE: nRF52832 dcdc stops at 1.2V

Drago Matt — Wed, 04 Oct 2023 13:19:16 GMT

Hello,

this is quite difficult to do, since after each message transfers device go into sleep mode. Since it does not happen so often it is hard to catch. I managed to verify some mcu register address and it looks like, that fw is spinning in IDLE mode and waiting for events/interrupts.

Is there any system event, that can prevent mcu going into sleep?

regards,

RE: nRF52832 dcdc stops at 1.2V

Håkon Alseth — Mon, 02 Oct 2023 13:25:16 GMT

Hi,

DEC4 voltage will vary based on the state of the nRF itself.

Have you tried connecting a debugger to your device when the issue occurs to see where it is stuck?

If so, could you please post the call stack?

Kind regards,

Håkon