DFU Zephyr using USB

[MPDeveloper89]

Hello,

In my application I'm using NORA B106 and I would like to update the firmware using USB.

In my device there isn't any FTDI and I want to use the USB layer available in Zephyr.

Can you help me to understand what are the steps to implement the application?

I think that I need to : 

• Enable the usb software module using Kconfig ( I found the following example)
• Install the driver in Windows to recognize the device

Can I use Zadig?

I tried but no Virtual COM has been detected

• Flashing the software using dedicated tool.

Thank you a lot for your support.

MP

[Vidar Berg]

Hello,

Attached below is an example based on the "Hello world" sample that includes MCUBoot configured with serial recovery support over USB ACM if you want to give it a try. You should not need to install any additional USB drivers for this unless you are working on Windows 7 or older. But you will need to install 'MCUmgr', the command line tool to perform the update: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/services/device_mgmt/mcumgr.html#command-line-tool 

hello_word_w_serial_recovery_nrf53_SDKv2.2.0.zip

Otherwise, if you need to rely on the USB class, you can try the USB DFU Sample Application in Zephyr instead. 

Best regards,

Vidar

[MPDeveloper89]

Hello Vidar,

Thank you for feedback.

I load your example where I added my board:

But, during compilation I found some errors.

In prj.conf

In mcuboot.overlay

Do you know the possible root cause?

Thank.

MP

[Vidar Berg]

Hello,

Are you able to upload your project so I can try to have a look at it here? Alternatively, could you test again with the example I uploaded without making any modifications to it (apart from matching the pinout to your board) and see if you get the same problem?

[MPDeveloper89]

Hello,

Yes, sure. Attached the project used and.dts files (they could useful ).

Regarding your example, I cannot verify immediately your example because I don't have any additional usb driver on board to verify the "hello world" printing.

button_w_serial_recovery_nrf53_SDKv2.2.0.zip

ubx_evknorab10_cpuapp_common.zip 

[Vidar Berg]

Hello,

Thanks for uploading your project. It works as expected when I build it for the nrf5340dk_nrf5340_cpuapp board at least: 

Could you try the same to see if the version number gets updated as shown in the screenshot above? The button and LED assigment will not match your board but you can still check if the update succeeds. 

[MPDeveloper89]

Which .bin file are you used (from screenshot is not visible)?

I tried with the app_update.bin file but versioning is not updated.

MPDeveloper89 said:

So, I started the DFU procedure suggested after entering in DFU mode:

The procedure seems work but flash memory is not updated.

Regarding your consideration, please consider that I'm using a custom board based on the same Soc then external peripheral are custom configured.

[Vidar Berg]

I used the app_update.bin that was generated after I bumped the 'CONFIG_MCUBOOT_IMAGE_VERSION' value. 

MPDeveloper89 said:

Regarding your consideration, please consider that I'm using a custom board based on the same Soc then external peripheral are custom configured.

Yes, the reason I asked you to try with the same build target (i.e. nrf5340dk_nrf5340_cpuapp) was to see if it would work if we had the same configuration settings. Anyway. I have built the project again for 'ubx_evknorab10_nrf5340_cpuapp' and included the hex files below. Please test with these and see if you still experience the same problem.

Test

1. Program 5153.GENERATED_CP_APPLICATION_merged_domains.hex and 8880.GENERATED_CP_NETWORK_merged_domains.hex to your board with nrfjprog or the Programmer app in nRF connect for desktop

2. Upload 7713.app_update.bin with mcumgr.

Expected result

[MPDeveloper89]

Hello Vlad,

Finally, updating SDK and after NORA port configuration, I was able to update the software in DFU mode.

Thank you.

MP