Hi,
I've been using these parts for a few years (the 51) and recently did some work getting the boot loader to be joined together with the application into a single burnable file.
My application is working fine with the SD, and previously I had the boot loader working fine as well but for whatever reason it is now hanging in
sd_softdevice_enable
I've checked on two seperate boards and same problem. If I flash the app + SD it works fine. I use a common .h file between them so the crystal reference is the same.
// Low frequency clock source to be used by the SoftDevice
#define NRF_CLOCK_LFCLKSRC {.source = NRF_CLOCK_LF_SRC_XTAL, \
.rc_ctiv = 0, \
.rc_temp_ctiv = 0, \
.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM}
I've spent a day on this so far and am stumped.
I've tried the default boot loaders for the PCA10040 (as I have the latest release parts on my custom boards) and they don't hang but they don't advertise either.
My own code is a duplicate of the boot loader but had a little bit of extra stuff like UART output etc etc. So I adjusted the .ld file to make it a bit bigger and also changed the starting offset in the dfu_types.h (plus the check during startup isn't complaining).
But this all worked fine a few months ago (yes, check the change logs I know but nothing showing).
I know not the most obvious. It's not throwing an error (I build with -DDEBUG and put in an error handler to dump the error code).
The SD is the s132_nrf52_2.0.1_softdevice.hex version.
Basically it never returns from sd_softdevice_enable which would imply some Osc issue (i.e.: we set it to expect an external osc which isn't there.. but this exact same setting when I run my application code works fine)... I have two oscillators on the boards..
I am on SDK 11 recently updated so wondering if something there caused me some grief.. but I had done a merge to check on diffs and nothing exciting.
Any clues? Guesses?
