NRF52 DK, Sgger Embeded and Hex file

[Osildir]

Hi

I have a problem with my NRF52 DK and my HEX file .. 

With one of my projects, when I generate a HEX file, and I put this one in the NRF52 DK, the program is not working. But when I transfer my app directly with segger embedded, without une hex file, it's working. More, when i've try with an other project (an example non-modified) the hex file work like expected.

Someone can give me a track to understand what is going wrong ?

Thanks for your help.

[Jørgen Holmefjord]

Hi,

Are you using a softdevice in your project? Note that projects for Segger Embedded Studio in SDK 14.1 and above are setup to flash the softdevice along with the application if needed. If you do not flash the softdevice together with your application, it will not work. The pre-build HEX files found in the example folders have the softdevice merged into the HEX file.

Best regards,
Jørgen 

[Jørgen Holmefjord]

The softdevice is needed in all BLE or ANT applications. You can find some information about softdevices on this getting started page. The need for a softdevice is indicated on the top of the example documentation page. You can merge the softdevice with the application HEX file using our tool mergehex.

[Osildir]

I watched this documents, and I still have a question.

In my project I included nrf_sdh.c nrf_sdh_ble.c and nrf_sdh.soc.c

They are sources files about the soft device (they are in the folder components -> softdevice -> common.

My question is : Do I need something more about softdevice ? If yes i missed something.

Thanks four your help.

[Osildir]

Forgett my last message, I found what I miss.

I write this here for next people :

- Open nrfgo

- Select the board 

- Erase the board

- On the right select Program SoftDevice and flash the right soft device HEX

- Again on the right select Program Application and flash the hex generated from program

It works

Again thank you for your time Jorgen.