JLink fails to program PCA100028

RE: JLink fails to program PCA100028

Sigurd — Tue, 12 Dec 2017 10:00:55 GMT

Did you enable readback protection? Try to do a nrfjprog --recover, and then program the SoftDevice, and then the application.

Also make sure that your "Options for Target" configuration looks like this:

RE: JLink fails to program PCA100028

eyalasko — Sat, 09 Dec 2017 20:12:05 GMT

Hi,

I've Followed your guidelines - 'Erase all' then 'Program soft device' ( nRF5_SDK_12.3.0_d7731ad/components/softdevice/s130/hex/s130_nrf51_2.0.1_softdevice.hex).

Unfortunately I still get "Flash download failed - Cortex M0" error message when trying to load through keil MDK ....

RE: JLink fails to program PCA100028

Sigurd — Sat, 09 Dec 2017 12:44:21 GMT

Please download and use SDK 12.3 from here and the latest nRF5x Command line tools. If you want a GUI to flash the SoftDevice you can also download and install nRF Go Studio.

Use either nrfjprog(nrfjprog -f nrf51 -e) or nRFGo Studio to do a chip erase. Then flash the chip with the S130 v.2.0.1 SoftDevice. This SoftDevice can be found in the folder SDK12_3_folder\components\softdevice\s130\hex. Then use Keil to flash the example application. The example application will be placed at top of the SoftDevice in flash.

RE: JLink fails to program PCA100028

eyalasko — Fri, 08 Dec 2017 10:01:33 GMT

Hi Sigurd, thanks for your prompt reply.

I've followed your instruction. however now I get another error message...

What should be the next step ?

Thanks again.

RE: JLink fails to program PCA100028

Sigurd — Fri, 08 Dec 2017 09:29:25 GMT

Hi,

Looks like you have configured Keil to use JTAG instead of SWD. Make sure that you have "SW" under PORT in the Jlink driver setup: