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??

[butumout]

Oh. Virtual comport is COM6

[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.