NRF52832 adafruit feather - flash error (ESB low-power example)

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

awneil — Sat, 14 Sep 2019 11:51:23 GMT

Thanks for sharing.

Please verify that answer - so that people know it solves the issue

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

Ivan — Sat, 14 Sep 2019 09:51:03 GMT

So, finally I got it work properly with ST-LINK without any problem.

I add a 'softdevice erase flash' algo in a separate target with 'erase full chip' option, no program. And left only 'nrf52_xx' flash algo in default target with program option and no erase.

First, you erase full chip with first target, than you program it with second. Thats all.

: )

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

Ivan — Fri, 13 Sep 2019 13:12:25 GMT

Thanx for the answers! I 'll use J-link in this case.

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

awneil — Fri, 13 Sep 2019 13:00:46 GMT

Again, using (ab)using unsupported tools outside their designed scope is just complicating things.

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

Jared — Fri, 13 Sep 2019 12:59:15 GMT

Whoops! I read this one a bit too quick and missed the part about the ST-LINK. As awneil has already suggested, I would recommend using a debugger that is supported by us. I think the source of your issue is that a proper erase isn't performed before you try to reprogram the device.

best regards

Jared

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

Ivan — Fri, 13 Sep 2019 12:54:53 GMT

st-link utility gives an error to flash.
But directly via Keil I can flash Soft Device and BLE examples no problem.
Once I was lucky to flash ESB example, maybe that was correct erase of the chip.

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

awneil — Fri, 13 Sep 2019 12:51:12 GMT

again, have you tried with the ST-Link Utility - to rule Keil out of the issue?

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

Ivan — Fri, 13 Sep 2019 12:49:03 GMT

So flash erase via Keil doesn't seems to be correct?

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

awneil — Fri, 13 Sep 2019 12:47:03 GMT

nrfjprog isn't going to work with an ST-Link - is it ?

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

Jared — Fri, 13 Sep 2019 12:13:58 GMT

Hi,

Did you remember to erase the chip before you programmed the example?

Use this nrfjprog command before you try to program it:

nrfjprog -e

Best regards

Jared

RE: NRF52832 adafruit feather - flash error (ESB low-power example)

awneil — Fri, 13 Sep 2019 09:45:46 GMT

[quote userid="71428" url="~/f/nordic-q-a/52113/nrf52832-adafruit-feather---flash-error-esb-low-power-example"]with ST-LINK V2 debugger[/quote]

So you're going off-piste with that

https://devzone.nordicsemi.com/f/nordic-q-a/52030/nrf51822--reset-factory-memory-layout/209205#209205

life's a lot simpler if you stick to supported tools!

Anyhow, the first thing to try is always to do it via the ST-Link Utility - that way you can see if it's a fundamental issue with the ST-Link, or something to do with Keil ...