NRF51822 scan_start problems

[simonk]

Hello all,

I am having problems with scan_start function (or something connected with it). I am using NRF51822 on custom board, using BLE functionality and also UART for communication to PC. I am using CLOCK_LFCLKSRC_SRC_RC clock source. My pins for UART are p0.26 and p0.21. P0.26 has internal pull-up enabled. I have also disabled flow control.

My program works normally if I am using UART and my device is advertising. I can receive and transmit data to PC. But as soon as I use scan_start function, problems appear. It does not happen every time, but still very often, than during/soon after scan, command sent through UART hangs the execution of code on processor - I get a Hard fault. Those LOG_INFOs in scan_start are transmitted normally - error_code: 0.

Are there any known problems with UART & scanning/advertising? Could be the problem with advertising during scan?

Any suggestion would help.

Those are my parameters and scan_start function. code.txt

[Einar Thorsrud]

Have you found a solution to this problem? I don't know of any issues with combining UART logging with scanning or advertising. In fact it is don in several of the examples in the SDK, so there is likely another factor here as well. Which SDK version are you using? Can you provide more of your code? If you do not want to post the code on a public forum you can instead open a support case.