52840 can not program bootloader

RE: 52840 can not program bootloader

awneil — Tue, 10 Sep 2019 18:15:20 GMT

[quote userid="13823" url="~/f/nordic-q-a/51217/52840-can-not-program-bootloader/209023"]I came back to close this issue so others can find these information useful.[/quote]

Thanks for doing that. To make it clear that the issue is resolved, you need to verify the answer:

RE: 52840 can not program bootloader

rolandash — Tue, 10 Sep 2019 18:02:04 GMT

AndreasF

Sry for the late but I am occupied by other projects.

I came back to close this issue so others can find these information useful.

52840's bootloader can only successfully be programmed when JLink can identify 52840 out of 52 family. When only pass 'NRF52' as device it just can not succeed. This, however, is not required for other hex files, which suggesting 52840's bootloader does seem bit special.

V6.42 I was using is just too old to identify 52840. So I upgraded to 6.44g and at last I can program bootloader now.

I am still now sure about nrfjprog. When I pass "NRF52" to the command line as in the document it just return errors. Seems the parameters or documents need to be adjusted.

RE: 52840 can not program bootloader

AndreasF — Fri, 23 Aug 2019 11:38:26 GMT

Hi.

Thanks for the reply, looking forward to hear what you find out :-)

Best regards,

Andreas

RE: 52840 can not program bootloader

rolandash — Fri, 23 Aug 2019 07:21:44 GMT

@AndreasF

thank you for the confirmation.

I have been using JLink V6.42e, and since i downloaded nrfjprog yesterday, i also have tried V6.44, they all act the same way.

So i got the bottom line now. I think i will find a Windows box to give a try first.

RE: 52840 can not program bootloader

AndreasF — Fri, 23 Aug 2019 06:50:05 GMT

Hi.

Which version of J-Link do you have?

[quote user="rolandash"]1. is bootloader hex file specical than other hex files?[/quote]

No, this hex file is not special

[quote user="rolandash"]2. Do i need to do some special handling before flash it? like sign it, or manually edit something? [/quote]

No, you don't need to do something special before flashing it.

[quote user="rolandash"]3. Or is it protected by something?[/quote]

No, it is not protected by something.

[quote user="rolandash"]Also, can you help to confirm that if you get same issue when programming bootloader through JLink?[/quote]

I don't get this error:

Best regards,

Andreas

RE: 52840 can not program bootloader

rolandash — Thu, 22 Aug 2019 08:50:36 GMT

No nothing there, and not in anywhere else.

The same 52840 board of course.

I also tested it on 52840DK and the result is the same. So does not look like a hardware issue.

Now can you confirm that:

1. is bootloader hex file specical than other hex files?

2. Do i need to do some special handling before flash it? like sign it, or manually edit something?

3. Or is it protected by something?

Also, can you help to confirm that if you get same issue when programming bootloader through JLink?

thanks.

RE: 52840 can not program bootloader

AndreasF — Thu, 22 Aug 2019 07:01:54 GMT

Hi.

You find the log file in the same path as you run the command from.

[quote user="rolandash"]Before this issue was found I have been flash hex into 52840 hundreds of times with all goods.[/quote]

The same nRF52840, or different?

Best regards,

Andreas

RE: 52840 can not program bootloader

rolandash — Wed, 21 Aug 2019 15:55:14 GMT

OK i downloaded nrfjprog and had a try.

I am using a MacBook Pro with OSX 10.14.5 Mojave.

Type in following command gives me really mess error messages:

=========

nrfjprog --family nRF52 -e --log

ERROR: JLinkARM DLL reported an error. Try again. If error condition

ERROR: persists, run the same command again with argument --log, contact Nordic

ERROR: Semiconductor and provide the generated log.log file to them.

==========

and i can not find log.log anywhere.

So what else?

RE: 52840 can not program bootloader

rolandash — Wed, 21 Aug 2019 14:48:00 GMT

I did not install nrfjprog so I am not sure. I am using JLink all the time, so I have a consistent interface to other chipset as well.

Before this issue was found I have been flash hex into 52840 hundreds of times with all goods.

So what's wrong with JLink command? any special treatment needed to handle a boot loader hex?

RE: 52840 can not program bootloader

AndreasF — Wed, 21 Aug 2019 13:14:36 GMT

Hi.

Are you able to program the bootloader using nrfjprog?

Best regards,

Andreas