Flash protection with DFU on nrF52832

RE: Flash protection with DFU on nrF52832

Vidar Berg — Wed, 14 Feb 2018 08:07:01 GMT

Agree, this isn't normal. Have you tried to do the same with the pre-compiled bootloader? Steps to test pre-compiled bootloader: http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v11.0.0/bledfu_example_running.html?cp=4_0_8_4_3_1_1_0_2#bledfu_example_running_test

RE: Flash protection with DFU on nrF52832

Nguyen Hoan Hoang — Tue, 13 Feb 2018 13:33:26 GMT

Not normal. I have that issue too with DFU. Had to DFU twice for it to work. Don't know why. This is with SDK14.2.

RE: Flash protection with DFU on nrF52832

Nabil — Tue, 13 Feb 2018 08:36:39 GMT

It's working but it seem that it's not working when you make a device Firmware update OTA.

Is it normal that you have to update twice for the application to work?

Thank you ?

RE: Flash protection with DFU on nrF52832

Vidar Berg — Mon, 12 Feb 2018 09:09:18 GMT

That should work. Did you reset the board afterwards? E.g., nrfjprog --pinreset.

RE: Flash protection with DFU on nrF52832

Nabil — Mon, 12 Feb 2018 08:05:47 GMT

Hello,

I'm only working with :

$ nrfjprog --family nrf52 --rbp all

Is that enough ? I didn't add anything more on the soft. Neither in boot nor in app.

Thank you very much

RE: Flash protection with DFU on nrF52832

Vidar Berg — Sat, 10 Feb 2018 10:39:59 GMT

Nguyen Hoan Hoang, are you using the WD timer in your app? Maybe you are seeing a WD timeout when it fails?

RE: Flash protection with DFU on nrF52832

Vidar Berg — Sat, 10 Feb 2018 10:35:05 GMT

Hello,

APPROTECT prevents external access through the debug interface, but does not affect the CPU's access to memory internally. In other words, it shouldn't affect the DFU process. How are you enabling the readback protection, with the programmer, or from the bootloader/app?

RE: Flash protection with DFU on nrF52832

Nguyen Hoan Hoang — Fri, 09 Feb 2018 03:45:58 GMT

I found that some times I had to DFU it twice for it to work. I haven't found the problem yet. DFU the first time didn't work. DFU the second time worked.

RE: Flash protection with DFU on nrF52832

Nabil — Thu, 08 Feb 2018 08:26:01 GMT

Hello,

I have tried it but it seem that it doesn't work. After updated the app doesn't start with protection but working very well without protection.

Thank you

RE: Flash protection with DFU on nrF52832

Nguyen Hoan Hoang — Wed, 07 Feb 2018 16:59:47 GMT

yes.