nRF52840 doesn't advertise

RE: nRF52840 doesn't advertise

awneil — Wed, 16 Jan 2019 18:17:30 GMT

So please verify the answer:

RE: nRF52840 doesn't advertise

Big_John — Wed, 16 Jan 2019 15:29:46 GMT

Hi, Awneil

Thank you for your help. I found out the problem. For what you said, though I don't understand according to my knowledge now, I will try. Thank you.

RE: nRF52840 doesn't advertise

Big_John — Wed, 16 Jan 2019 15:24:10 GMT

Hi, Cyril

Thank you for your answer. I am not very understand what you said about 'pc', but I tried to use some breakpoints and found the exact place where the failing instruction comes from.It's about the RAM address. When I changed, it works. Thank you very much.

RE: nRF52840 doesn't advertise

awneil — Wed, 16 Jan 2019 14:36:16 GMT

[quote userid="76545" url="~/f/nordic-q-a/42606/nrf52840-doesn-t-advertise"]when I debug it, then it will jump into this place,as shown in picture.[/quote]

When, exactly, does that "jump" happen?

As cyril said, that is the error handler - so, if your last step included something like an APP_ERROR_CHECK() which failed, then you would expect to end up in the Error Handler.

Another possibility is that you are crashing the SoftDevice by halting the processor. This is because the SD has time-critical events; if it can't keep up with them - eg, because the CPU is halted by the debugger - then it will crash.

To get over this, you can use Monitor Mode Debugging:

github.com/.../

devzone.nordicsemi.com/.../monitor-mode-debugging---revolutionize-the-way-you-debug-ble-applications

Sorry, the forum seems to have tagged the wrong Cyril

RE: nRF52840 doesn't advertise

Cyril — Wed, 16 Jan 2019 14:18:17 GMT

Hello,

This function is the error handler. It means an assert doesn't pass in your code (for example APP_ERROR_CHECK())

you should check the Program Counter (PC) contained in the 'pc' variable (check a few line higher on your screenshot.
Then take a look at the .map file to see where the failing instruction comes from.

Otherwise try to put some breakpoints in your program to see at which point it fails (which function doesn't return).