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Successfully program sparkfun nrf52, but programs don't run

Hi all:

I'm am a beginner switching over from the Arduino IDE and the feather nrf52.

I am able to successfully program the sparkfun nrf52 with a SoftDevice, bootloader and application using the nrf52 Dev Kit, however, applications don't run once everything is programmed. I've tried using the SD, Bootloader and the BLEPeripheral ibeacon example program (exported compiled binary for Sparkfun breakout) and even this baseline test did not cause the device to broadcast when powered on.

Is there any chance anyone has an incling what I may be looking over.

Thanks so much! Please see attached for the SD and bootloader i used.

s132_nrf52_2.0.0_softdevice.zip

-J

  • If you aren't 100% sure what were the original working HEX binaries (ideally in single merged file so you can just flash it by any tool like nrfjprog) then I suggest to take some of very basic HW test examples from nRF5 SDK and try to get Sparkfun board working with them. I suppose there is a LED so you can just retarget the PIN from nRF5x DK (all nRF5 SDK examples are by default compiled for one of Nordic dev kits) to the PIN number corresponding to Sparkfun feather. If there is no LED I'm sure you can get one and connect it through the bread board and jump wires. By this you should get LED blinking which shows that both HW and flashing procedure are OK. From there you can move to more complex examples which are using radio (because there are LFCLK configurations which might differ between nRF5x DK boards and Sparkfun...)

    Also there are people using and asking for help with Sparkfun nRF52 board on this forum, are you sure that none from previous questions answers your problem?

  • @sc4z Have you tried what endnode has suggested? Did it work for you? You might want to look at this tutorial Sparkfun has provided. This devzone case might also be helpful. This Devzone case might also help.

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