What does it mean when debugger head lands on 0x00000000?

[Tyler]

I'm running on a nrf51822 chip, using Keil and a JLink Segger programmer. I'm running on SDK 12.2.0 and I believe I was correct in choosing pca 10028 s130 but I'm not 100% sure. I had to modify the target device when I started with the ble_app_template.

When I am running the debugger, It will go through the power manager loop 1 or 2 times, reset to be beginning, repeat a few times, and then the execution code jumps to 0x00000000 and loops there forever. If I operate outside debugger mode, it just loops 1-6 times and then resets (I know because I am advertising a loop count as part of some ble beacon information).

[Tyler]

I think part of it might be because the oscillator wasn't correct in the project options, however I tried it on 16MHz and 32MHz and it still doesn't work for this board (which I think is just using the internal oscillator, but I am going to double check). When I changed the oscillator value for the devkit, everything worked fine, but before hand the example projects had the wrong oscillator values and they were not working properly on the nrf51 devkit board (weird considering that the example projects are built for the devkits).