Using LFCLK, enabling and running the WDT causes the nRF52840 to hang until the watchdog reset when calling nrf_drv_clock_lfclk_release. This is with SDK v15.2.0
Steps to recreate
1) start the lfclk byret_code_t err_code = nrf_drv_clock_init(); APP_ERROR_CHECK(err_code); nrf_drv_clock_lfclk_request(NULL);
2) stop the clocknrf_drv_clock_lfclk_release(); NRF_LOG_INFO("clock release."); nrf_drv_clock_uninit();
3) init the BLE Device as mentioned in the BLE Examplevoid iot_ble_initialize(void) { ble_stack_init(); gap_params_init(); gatt_init(); advertising_init(); services_init(); conn_params_init(); }
4) reset after 3 mins and go back to step1If the resets continuously happen
then randomly I see that the nrf_drv_clock_lfclk_release is getting stuck
I was able to trace the call to following:a. nrf_drv_clock_lfclk_release b. lfclk_stop c. nrfx_clock_lfclk_stop d. while(nrf_clock_lf_is_running()). <--- Hangs here Is there a reason as to why the nrf_drv_clock_lfclk_release is getting stuck