Cannot use SWD to communicate with nRF52832 BK board

RE: Cannot use SWD to communicate with nRF52832 BK board

Bjørn Kvaale — Tue, 30 Jan 2018 10:33:43 GMT

@cdugue This devzone case seems quite similar. This case might also be helpful. Seems like it could be a HW error in your breakout board or it might be that the battery level is too low if you are powering your board via batteries. Also seems that the JLinkARM.dll errors -1 & -102 are generic error codes & Segger documentation does not offer any specific explanation to why these errors have occurred. Might also be an idea to talk to sparkfun support & see if they have any tips.

RE: Cannot use SWD to communicate with nRF52832 BK board

Nguyen Hoan Hoang — Sun, 28 Jan 2018 00:09:51 GMT

It might be protected. I don't use nrfjprog but I know there is a command parameter for unlocking. You may try that.

RE: Cannot use SWD to communicate with nRF52832 BK board

cdugue — Sat, 27 Jan 2018 20:09:42 GMT

Matt, I do not have another breakout board just now, should have another one soon.

Nguyen, I tried to erase all but I cannot. Here is the log:

FUNCTION: read_device_version.

JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.

JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -102.

FUNCTION: close_dll.

RE: Cannot use SWD to communicate with nRF52832 BK board

Nguyen Hoan Hoang — Sat, 27 Jan 2018 15:17:20 GMT

Can you try to erase all to see if you can recover from it.

RE: Cannot use SWD to communicate with nRF52832 BK board

Matt — Sat, 27 Jan 2018 14:30:24 GMT

Can you try with another breakout board?