Unable to run "BLE Blinky" on an Fanstel BM832A but can run non-BLE examples

[David Smoot]

I'm sure the mistake is mine but I would appreciate some suggestions on where to look for my mistake.

I have a custom board with a Fanstel BM832A module.  I also have an NRF52 dev kit for comparison.

I can run basic non-bluetooth peripheral code on the board so I know I have good SWD programming.

I am starting from the example at nRF5_SDK_17.0.2_d674dde\examples\ble_peripheral\ble_app_blinky\pca10040e\s112\armgcc.  I am using the same version of GCC as that version of the SDK's makefile specifies.

Building that example runs exactly as expected on the NRF52.  I can change the name of the device and interact with it over bluetooth.

However, I am so far unable to successfully modify the makefile to run on my "real" NRF52810.

Here's what I have tried without luck:

1. Defined a custom board.  I could have button and LED pins wrong but I can't see anything on BLE so I don't think a mistake here would explain that.
2. Removed "CFLAGS += -DDEVELOP_IN_NRF52832" (and the same ASMFLAGS)
3. Removed "CFLAGS += -DNRF52_PAN_74" (and the same ASMFLAGS)
4. Removed "CFLAGS += -DNRFX_COREDEP_DELAY_US_LOOP_CYCLES=3" (and the same ASMFLAGS)

execute make, make flash, make flash_softdevice and I see nothing on BLE.  

Any suggestions of what to try next?  

Thank you,

David