nrf52833 USB DFU Problem to download file hash check

[butumout]

chip : nrf52833
softdevice : s140 nrf52 7.2.0
IDE : IAR
OS : windows 10

I try to USB DFU in nrf52833

I'm using secure bootloader base on secure bootloader example and success to DFU by button less BLE DFU.

And then, I try to USB DFU and added my application USB CDC ACM and USB DFU Trigger Class.

I think virtual comport is fine.

And added USB DFU function to following open bootloader usb.

Try to USB DFU by nrfutil, it works download dfu file. Checked by -vvvv option and first 5 hex values and last 5 hex values are exactly same.
The progress bar going to 95 percent, and then failed.

Debugging the bootloader, hash value is not same calculated hash and init packet hash.

I can't debugging my bootloader with optimize option NONE. It makes hard fault.
In optimize option high, downloaded file value is looks like 0xff.

How can I fix it??

[Vidar Berg]

Hello,

To confirm it's not something with your setup, could please try USB DFU with the 'pca10100e_usb_debug' example and see if it fails in the same way?

Try to USB DFU by nrfutil, it works download dfu file. Checked by -vvvv option and first 5 hex values and last 5 hex values are exactly same.

Have you checked if these values match the hex values in your binary image?

Best regards,

Vidar

[butumout]

Hello,

I using SDK 17.0.2. And this SDK DFU open bootloader examples are for pca10056 and pca10059. How can I find pca1011e_usb_debug??

I using command like this.
nrfutil pkg generate --application my.hex --application-version-string 1.0.1 --hw-version 10000 --sd-req 0x0100 --key-file my_private_key.pem my_dfu_package.zip

And I check bin file in zip.

[Vidar Berg]

Hello,

The 'pca10100e_usb_debug' project is placed together with the other secure bootloader projects in SDK/dfu/secure_bootloader/. Is it a requirement to have a open bootloader where you can upload unsigned images?

[butumout]

Hello,

I make my secure bootloader to debug mode following 'pca10100e_usb_debug'.
And I got  "<debug> nrf_dfu_flash: Flash write failed (0x3)".

Packet length is always 1024(0x400) and this is multiple of 4. Last packet length is 932 and multiple of 4 too.

[Vidar Berg]

Hello,

I made a 'pca101000_usb_s140_ble_debug' configuration to see if I could replicate the issue, but it seems to work fine with both transports in my case. Could you please try with my bootloader to see if it works for you as well?

USB and BLE bootloader:

nRF5_SDK17.1.0_pca10100_usb_ble_debug.zip