mbed app loaded to drive works, downloaded to firmware does not

[mark waldin]

quick-stop_2_with_soft_filter_NRF52_DK (1).hexI imagine that my question is just one from lack of experience. I apologize for that but I cannot find any information on the Internet to address this problem. I load my mbed developed app hex file to the nrf52 DK by copying to JLINK drive and it works great.

Now wanting to load it to firmare and used nrfjprog to write it to firmware. Write went fine. Did a compare to check it was loaded and no problem but it does not run when I do a reset or on/off.

Can you guide me to what I am missing?

Thank you, Mark

[mark waldin]

I am using the online compiler also. You mention flashing your code with both drag and drop as well as nrfjprog. From my experience using the drag and drop I was under the impression that the code loads to ram and is not flashed. I say this because when i use the drag and drop the code executes immediately without needing to do a reset and when I turn the board on and off the code no longer runs. Am I incorrect?