use nrf_drv_clock_hfclk_release to release hfclk cause CPU halt

[eshaul]

Hi,

I am using nrf_drv_clock_hfclk_release(); in order to release the hfclk, before the call, the internal counter is 1 and the module is initialized.

because the counter is 1, the SDK function above is calling: hfclk_stop();

in it, there is a call to: sd_clock_hfclk_release()

my CPU is halted right after this call.

I think it's happening because I am calling nrf_drv_clock_hfclk_release() from a very high priority context - it is not happening when called from lower priority.

Do you have some idea why it's halting? or how can I debug it?

I'm using running on an nrf52832 and using SDK 11 with softdevice s132 v2.0.0!

Thanks

[Kenneth]

Hi,

Please refer to this page on the application interrupts levels that can execute softdevice api calls:
https://infocenter.nordicsemi.com/topic/sds_s132/SDS/s1xx/processor_avail_interrupt_latency/exception_mgmt_sd.html

Kenneth

[eshaul]

So basically it means that calling this sd function from priority level 3/4 is forbidden? 

[Kenneth]

Correct.

Kenneth

[eshaul]

Thank you Kenneth