JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

haakonsh — Tue, 05 Nov 2019 08:47:45 GMT

in the jlinksettings.ini file i think.

It's documented in the README file for Keil.

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

Craig — Mon, 04 Nov 2019 23:33:52 GMT

Ahhh thanks very much.....where is that set?

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

haakonsh — Mon, 04 Nov 2019 16:24:20 GMT

I think it was because the application vector table was set to the address of 0x0000000 which is not the correct address for the application's vector table.

Also updated the repo for SES.

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

Craig — Mon, 04 Nov 2019 16:08:15 GMT

Ok thanks.....do you know why I was getting that error origimally? You said you forgot some settong?

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

haakonsh — Mon, 04 Nov 2019 15:43:38 GMT

I updated the SDK15.0 branch in the repo so that it works for Keil.

I do not know why my work has not been committed and pushed earlier.

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

Craig — Mon, 04 Nov 2019 13:19:56 GMT

I am not sure why it works with the 14.2 on my custom PCB. You mentioned you forgot why that would be any chance you can easily find out?

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

haakonsh — Mon, 04 Nov 2019 12:39:00 GMT

I do not know what your asking, I need you to rephrase your question.

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

Craig — Fri, 01 Nov 2019 13:55:45 GMT

Hi thanks for reply....can you answer the first question at least? haha the second question I can figure out......

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

haakonsh — Fri, 01 Nov 2019 12:05:03 GMT

"Hey I finally got around to this and it does program on my board...why?"
I don't understand what you're asking here, can you share more information about this issue?

"Also I couldn't get the v15.0.0 to work because it references the files still from SDKv14.2.0"
Can you share more information about this issue?

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

Craig — Thu, 31 Oct 2019 20:05:53 GMT

Hey I finally got around to this and it does program on my board...why? Also I couldn't get the v15.0.0 to work because it references the files still from SDKv14.2.0 but if you can help me figure out how to get it work on my project thatd be great!!!!

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

haakonsh — Wed, 02 Oct 2019 07:39:18 GMT

I've seen that error before, but I cannot for the life of me remember what was the cause. I do remember that it has little to do with the CPU register that it's complaining about. I believe it is a project setting that is not set up properly.

Do you run the same FW on the DK and the custom board, or have you changed something?

What I suspect is an incorrect starting address of the application in RAM, due to the SoftDevice needing more RAM for buffers. Larger MTU's, more links, added security, added scan response data, etc, will increase the RAM usage of the SoftDevice.

Can you run the following project on both the DK and the custom board?
https://github.com/NordicPlayground/j-link-monitoring-mode-debugging/tree/SDK14.2/pca10040/s132/arm5_no_packs

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

Craig — Tue, 01 Oct 2019 15:05:04 GMT

RE: JLINK monitor mode programs in nRF52-DK and seems to work however I cann't use this on my custom PCB with JLINK Ultra

haakonsh — Tue, 01 Oct 2019 08:43:24 GMT

[quote user=""]when I program my custom PCB it gives me an error and says the bit cannot be set.[/quote]

Can you share exactly what the error is, and what generates it?

The J-link ultra supports Monitor Mode Debugging, so that's not the issue at least.