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debugging BLE uart causes reset when breakpoint set in SDK

I am using Keil and nrf52 dev kit to write some UART over BLE code if I set a break-point in nus_data_handler() it cause a reset to run soon after stepping though some code and the BLE radio starts advertising even though I am stepping through code.

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haakonsh over 6 years ago +2

The SoftDevice will hardfault if you halt the CPU, the hardfault handler will reset the MCU. I suggest you try Monitor Mode Debugging: https://github.com/NordicPlayground/j-link-monitoring-mode-debugging…
haakonsh over 6 years ago in reply to Craig +1

Yes, but: awneil said: Note that you require at least a J-Link Plus for Monitor Mode Debug: https://www.segger.com/products/debug-probes/j-link/technology/monitor-mode-debugging/ - see the FAQs …