nrfjprog verify fails with chiperase

RE: nrfjprog verify fails with chiperase

zilhk — Mon, 14 Feb 2022 15:56:10 GMT

Thank you for the information.
Setting the watchdog timer behaviour to "NRF_WDT_BEHAVIOUR_PAUSE_SLEEP_HALT" fixes the issue! 🙂

The WDT is started right at the beginning of our "main()" function.

RE: nrfjprog verify fails with chiperase

dejans — Mon, 14 Feb 2022 14:55:07 GMT

Hi,

As you can read in the documentation, by default, the watchdog will be active counting down the down-counter while the CPU is sleeping and when it is halted by the debugger. You can also read more about reset behavior.
In your case, the watchdog timer seems to be running while halted. It may be started during the erase operation and finished before the erase operation is performed, thereby causing the error.

The solution would be either to use two-way workaround which already works well for you, or to disable (turn off) the watchdog timer while debugging.

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

zilhk — Mon, 14 Feb 2022 13:38:01 GMT

Hi Dejan,

I believe so, we have a call to "nrf_drv_wdt_init()" with NRF_DRV_WDT_DEAFULT_CONFIG passed as the config.

I'm realizing now that this is a "legacy" feature.

Do you recommend switching to something else?

Thanks.

RE: nrfjprog verify fails with chiperase

dejans — Mon, 14 Feb 2022 12:37:46 GMT

Hi,

Are you using a watchdog timer in your application?

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

dejans — Mon, 14 Feb 2022 12:06:25 GMT

Hi,

No problem.

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

zilhk — Fri, 11 Feb 2022 10:05:35 GMT

Thanks!

RE: nrfjprog verify fails with chiperase

dejans — Fri, 11 Feb 2022 10:03:46 GMT

Hi,

I have asked internally and waiting for the reply.

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

zilhk — Thu, 10 Feb 2022 09:49:04 GMT

Thank you!

RE: nrfjprog verify fails with chiperase

dejans — Wed, 09 Feb 2022 12:46:27 GMT

Hi,

Thank you for the hex file.

I have managed to reproduce your problem.
I'll come back to you when I get more information about a potential solution.

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

zilhk — Tue, 08 Feb 2022 14:13:37 GMT

Sure, here you go.devzone.nordicsemi.com/.../full_5F00_firmware_5F00_factory.zip

RE: nrfjprog verify fails with chiperase

dejans — Tue, 08 Feb 2022 13:57:34 GMT

Hi,

If possible, could you please provide your flash (hex) file?

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

zilhk — Tue, 08 Feb 2022 10:12:12 GMT

Here it is.
The 0x2e000 address is the beginning of the flash area we use for fstorage. Our firmware modifies it on each boot. I suppose it fails because this area is not cleared beforehand.

nrfjprog -f nrf52 --program _build/full_firmware_factory.hex --reset --log
--verify
Parsing image file.
Verifying programming.
ERROR: [ nRF52] - Data does not match in address range [0x0002e000-0x0002e05c] (Flash)
ERROR: [ nRF52] - Expected byte value 0x39 but read 0x10 at address 0x0002e000.
ERROR: [ nRF52] - Flash verification failed.
ERROR: [ nRF52] - Failed while verifying file _build/full_firmware_factory.hex.
ERROR: Write verify failed.

RE: nrfjprog verify fails with chiperase

dejans — Tue, 08 Feb 2022 10:06:42 GMT

Hi,

What exactly is the output of "nrfjprog -f nrf52 --program _build/full_firmware_factory.hex --verify --reset" if you don't run "nrfjprog -f nrf52 --eraseall" beforehand?

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

zilhk — Tue, 08 Feb 2022 09:50:05 GMT

Yes but only if "nrfjprog -f nrf52 --eraseall" is run first

RE: nrfjprog verify fails with chiperase

dejans — Tue, 08 Feb 2022 09:45:34 GMT

Hi,

What happens if you don't use --sectorerase in "nrfjprog -f nrf52 --program _build/full_firmware_factory.hex --sectorerase --verify --reset". Does it work then?

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

zilhk — Mon, 07 Feb 2022 15:58:39 GMT

I've also tried with the --verify flag, it works as long as I'm not using --chiperase

nrfjprog -f nrf52 --eraseall
nrfjprog -f nrf52 --program _build/full_firmware_factory.hex --sectorerase --verify --reset

and

nrfjprog -f nrf52 --eraseall
nrfjprog -f nrf52 --program _build/full_firmware_factory.hex --verify --reset

both work fine

RE: nrfjprog verify fails with chiperase

zilhk — Mon, 07 Feb 2022 15:48:32 GMT

Yes, exactly.
Thanks for checking this out!

RE: nrfjprog verify fails with chiperase

dejans — Mon, 07 Feb 2022 15:35:28 GMT

Hi,

Thank you for the log file.

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

dejans — Mon, 07 Feb 2022 15:34:58 GMT

Hi,

The command "nrfjprog -f nrf52 --program _build/full_firmware_factory.hex --sectorerase --reset" works both with and without --sectorerase.
The command you were running with errors was "nrfjprog -f nrf52 --program _build/full_firmware_factory.hex --chiperase --verify --reset --log"
Is this correct?

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

zilhk — Mon, 07 Feb 2022 15:09:47 GMT

Yes, tried again and had no issue without using --sectorerase

Just realized I didn't read your question properly and deleted my earlier reply, sorry.

Filename is `_build/full_firmware_factory.hex` but I've edited my post and replaced it with just firmware.hex

RE: nrfjprog verify fails with chiperase

dejans — Mon, 07 Feb 2022 15:03:48 GMT

Hi,

No errors when using nrfjprog without --sectorerase?
What about hex file name?

Best regards,
Dejan

RE: nrfjprog verify fails with chiperase

zilhk — Mon, 07 Feb 2022 15:02:35 GMT

Yes filename is `_build/full_firmware_factory.hex` but I've edited my post and replaced it with just firmware.hex for simplicity (I guess that failed!)

RE: nrfjprog verify fails with chiperase

zilhk — Mon, 07 Feb 2022 15:01:43 GMT

Here is the log, first attempt worked, second failed

devzone.nordicsemi.com/.../3808.log.log

RE: nrfjprog verify fails with chiperase

zilhk — Mon, 07 Feb 2022 15:00:11 GMT

Hi! Yes, it works flawlessly when doing it 2 steps.

It's actually what I've been doing for months before I tried to use --chiperase

RE: nrfjprog verify fails with chiperase

dejans — Mon, 07 Feb 2022 14:29:45 GMT

Hi,

What is the actual name of the hex file you want to build - is it _build/full_firmware_factory.hex?
Could you try using "nrfjprog -f nrf52 --eraseall" and "nrfjprog -f nrf52 --program firmware.hex --reset" (without --sectorerase)? Are there any errors in that case?

Best regards,
Dejan