RE: Unexpected System resets

Petter Myhre — Mon, 08 Dec 2014 13:54:37 GMT

Could you add your complete project? If it is secret, please create a case in the MyPage support portal. What SDK version and SoftDevice version are you using?

RE: Unexpected System resets

Petter Myhre — Wed, 03 Dec 2014 17:23:58 GMT

I recommend you to try to use the debugger.

Start a debug session and put a breakpoint in app_error_handler(). To see the actual error code; remove optimization (click Options for Target->C/C++. Select Level 0 instead of Level 3).

app_error_handler() will reset the chip and I see that beacon_scanner_error_handler() calls it. This may be the reason, but I'm not sure why.

Please edit your question and include your findings.

Edit: I have been able to reproduce the issue, I'm not really sure what's happening. Investigating.

Edit2: It seems the issue occurs because of a drift difference between RTC0 and TIMER0. RTC0 is used internally by the timeslot, while TIMER0 is used by the application.

The issue should be resolved by replacing

NRF_TIMER0->CC[1] += TIMESLOT_LEN_US;

with

NRF_TIMER0->CC[1] += TIMESLOT_LEN_US - (TIMESLOT_LEN_US / 1000) - 1;

in scanner_beacon.c, line 289.