nrf52832 stops getting firmware via SWD after a while

[oguzhanERG]

Hi,

We are using a module which includes nRF52832 in a custom board. After a while devices stop working but when we re-connect battery device starts working again exept the SWD interface. What can cause this ? Also we are using RTT for communication with the device.

[oguzhanERG]

I am using sdk 14.2, i am using latest tools. For debugging i am using IO/CLK pins after i trying to enter debugging the MCU stops working untill power reset.

[Kenneth]

Weird indeed.

- Is there any discrepancy between the supply voltage on the custom board vs. what the jlink support? E.g. if you are using a DK for SWD the target supply voltage must be around ~3V.
- You have connected common ground between the jlink and target board yes?
- And is there any difference if you force the pin reset pin to VDD?

Kenneth