The ble_app_beacon example on NRF52811 doesn't run

[Sergey_Ladanov]

Hi, I tried to run the ble_app_beacon example (PCA10056e) on NRF8211 chip using SDK 17.1.0. I removed the DEVELOP_IN_NRF52840 and NRFX_COREDEP_DELAY_US_LOOP_CYCLES defines from the compile flags (as shown in https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/nrf52811_user_guide.html). The program stops at function sd_softdevice_enable without entering app_error_fault_handler. Breakpoints in function sd_softdevice_enable  are not reached when the program executes. What could be the reason?

[Sigurd]

Hi,

Do you have external LF crystal on you board? If no, make sure that you in sdk_config.h set NRF_SDH_CLOCK_LF_SRC to 0, NRF_SDH_CLOCK_LF_RC_CTIV to 16, NRF_SDH_CLOCK_LF_RC_TEMP_CTIV to 2, and NRF_SDH_CLOCK_LF_ACCURACY to 1

[Sergey_Ladanov]

It works! Thanks a lot!