Hi,
I made a custom board with nrf51822 and custom antenna which works fine for examples which use SDK10 + SD110. For my application it was recommended to use SDK12.3 + SD130. I started develop FW on NRF51DK with SDK12.3 and SD130. My app code works fine on the DK. No I wanted to test my app on my custom hardware and its not working. Exact same code works on DK but not on custom board. I use NRF_CLOCK_LF_SRC_RC as clock source in SOFTDEVICE_HANDLER_INIT. I also use
.rc_ctiv = 16, \
.rc_temp_ctiv = 2, \
.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_250_PPM}
for NRF_CLOCK_LFCLKSRC. App works like that on DK but again not on custom hardware. I noticed that the SDK10 examples work with SD110 on my custom board but SDK10 examples with SD130 dont work. That seems to narrow it down to compatibility with SD. Not sure whats going on here.