Programming nRF51 bootloader with nrfjprog.exe 7.5.1

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Adrian Eggenberger — Mon, 29 Jun 2015 10:42:03 GMT

I just checked and found out that we were not using the latest version... We use nrfjprog Version: 5.1.1.43514.

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Susheel Nuguru — Mon, 29 Jun 2015 10:34:41 GMT

Hi Adrian, can you give us the older version number of nrfjprog that you were using before 7.5.1

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Susheel Nuguru — Mon, 29 Jun 2015 09:32:52 GMT

Talked to the developer, We will try to find some solution without compromising the integrity of write operation. Please keep an eye on the new release of this tool. Ill update this thread if we have any new information.

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Adrian Eggenberger — Mon, 29 Jun 2015 08:15:43 GMT

I'm looking forward to there statement. Thanks!

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Susheel Nuguru — Mon, 29 Jun 2015 07:55:40 GMT

I agree, I will request the developer of nrfjprog to answer your question.

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Adrian Eggenberger — Mon, 29 Jun 2015 07:48:33 GMT

That would make development of bootloader parts a lot harder, because before programming a new bootloader the chip has to be erased (all data and application gone). In my opinion this would be a step backwards. In general i agree that the nrfjprog should check if area to be programmed is clean, but for the UICR it brings a lot of negativ consequences.

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Susheel Nuguru — Mon, 29 Jun 2015 07:42:01 GMT

No, I think the newer tools will always check that the memory they are writing to is erased (clean) before writing, this is diverging from old versions behavior.

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Adrian Eggenberger — Mon, 29 Jun 2015 07:40:02 GMT

Oh i didn't see that either. Will there be a corrected version of the nRF tools that can work the same way as the old version did?

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Susheel Nuguru — Mon, 29 Jun 2015 07:31:00 GMT

Hi Adrian, I am sorry, I have forgotten that --eraseuicr option on nRF51 chips is only available if the chip is pre factory programmed. In your case it is not so --eraseuicr will not work. I have edited my answer.

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Adrian Eggenberger — Fri, 26 Jun 2015 09:45:27 GMT

Thank you Aryan. I'll use the old version for nRF51 until an update is released.

RE: Programming nRF51 bootloader with nrfjprog.exe 7.5.1

Susheel Nuguru — Fri, 26 Jun 2015 08:41:45 GMT

normally this should work

nrfjprog.exe --eraseuicr
nrfjprog.exe --erasepage 0X3C000-0X40000
nrfjprog.exe --reset --program "bootloader.HEX"

But i have problem with --eraseuicr not working for pca100028 with nrfjprog version: 7.5.1 JLinkARM.dll version: 4.98c

EDIT:

--eraseuicr is not available on nRF51 chips if it is not pre programmed with software at the production time. So you probably have to erase full chip if you want to write your bootloader file.

nrfjprog.exe --eraseall
nrfjprog.exe --reset --program "bootloader.HEX"