Heart rate demo stuck at softdevice_handler_init()

[Tarik]

Hi we are developing a customized Bluetooth smart PCB with the nrf51822, I load the softdevice 110 v 7.1.0 no problem, but when I load the heart rate demo app it stuck in softdevice_handler_init() exactely in this line: err_code = sd_softdevice_enable(clock_source, softdevice_assertion_handler);

Once in this line even with step by step run the debugger never stops

When I use the same softdevice and the same app on the nrf51822 eval kit it works fine.

Any help please.

Thank you

[Håkon Alseth]

Do you have a 32 kHz external source on your board? If not, then try changing the SOFTDEVICE_INIT() to use the internal 32 kHz RC oscillator and see if that works.

Cheers, Håkon

[Tarik]

How can I do this, is it in this line : SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, false);

[Matt Barr]

Yes, LFCLKSRC selection options are enumerated in components/softdevice/s110/headers/nrf_sdm.h in the 7.x.x SDKs.