Switched to IAR and project continuously restarts

RE: Switched to IAR and project continuously restarts

Ole Bauck — Tue, 06 Dec 2016 13:00:30 GMT

Executing code after going to system OFF will lead to undefined behavior. The application should add an infinite loop after going to system OFF to avoid this, see the Product Specification. The SDK example does not do this and we are working on improving this.

Related link: devzone.nordicsemi.com/.../

To avoid system reset when functions return error code (and it is checked with APP_ERROR_CHECK), you should define DEBUG in the preprocessor symbols. This will make the application end up in an infinite while loop in the error handler. See here for more info.

RE: Switched to IAR and project continuously restarts

Alex — Wed, 16 Nov 2016 08:01:48 GMT

I can see that most likely sleep_mode_enter function returns error code when your code tries to go to sleep. When I tried to run nearly the same code in debug mode I had the same. In normal mode it works. I may be wrong but I have a feeling that I have read somewhere that nRF52 in debug mode can't go to sleep. Nordic can give more details. Or search on this forum. Update: this is the answer with exactly the same error code

RE: Switched to IAR and project continuously restarts

butch — Tue, 15 Nov 2016 20:22:35 GMT

You can look up the error code in components/libraries/util/sdk_errors.h Convert 8198 to hex?

RE: Switched to IAR and project continuously restarts

Alex — Tue, 15 Nov 2016 08:37:30 GMT

If you put breakpoint in app_error_handler_bare() then you can see error code. Also look at the function calls history under the View tab in IAR, so you can see where app_error_handler_bare was called.

RE: Switched to IAR and project continuously restarts

jmc — Tue, 15 Nov 2016 00:30:12 GMT

It calls app_error_handler_bare(), which is in the file app_error.c. This eventually calls NVIC_SystemReset();. No idea why this gets called. If I single step, then the error is thrown after 5-6 seconds (about 10 steps). If I let the code run, then it takes 2-3 minutes before the error is thrown.

I doubled the stack and heap sizes and it didn't help.

RE: Switched to IAR and project continuously restarts

Alex — Mon, 14 Nov 2016 09:09:36 GMT

Are you using IAR project settings from example? Main thing is linker file and preprocessor definitions in project. Or try to set break point in error handler to find out which function inside ble_advertising_start() returns error and resets your code.

RE: Switched to IAR and project continuously restarts

Artucas — Sat, 12 Nov 2016 06:07:01 GMT

If removing ble_advertising_start(); helped you, then my first guess would be to look at stack configuration. Maybe it is not enough space for the stack and you are experiencing issues with stack overflow.