zephyr: USB DFU Example not working on nrf52840

Describe the bug Following the guide here I am unable to update the device image using DFU. I have successfully flashed MCUBoot and the usb-dfu example. However, when I attempt to use dfu-util to update the image to a signed blinky example, I get the following output:

thomasokeeffe@Wirecat:~/Documents/school/drexel/research/CTS_sensor/zephyrproject$ dfu-util --alt 1 --download build
-blinky-signed/zephyr/zephyr.signed.bin                                                                             
dfu-util 0.9                                                                                                        
                                                                                                                    
Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.                                                  
Copyright 2010-2016 Tormod Volden and Stefan Schmidt                                                                This program is Free Software and has ABSOLUTELY NO WARRANTY                                                        
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/                                                    
                                                                                                                    
dfu-util: Invalid DFU suffix signature                                                                              
dfu-util: A valid DFU suffix will be required in a future dfu-util release!!!            
dfu-util: No DFU capable USB device available

Please also mention any information which could help others to understand the problem you’re facing:

Target platform: nrf52840dk_nrf52840

To Reproduce Steps to reproduce the behavior: Follow the guide until using dfu-util to update the image. See above error.

Expected behavior I expected the device to be discovered by dfu-util and update the image successfully.

Environment (please complete the following information):

OS: Ubuntu 22.04, kernel 6.5.0
Toolchain: Zephy SDK 0.16.3
Commit SHA: 6597a65b23ff87ee526644c407dbbff7d257743a

About this issue

Original URL
State: closed
Created 8 months ago
Reactions: 1
Comments: 24

Most upvoted comments

I applied the patch, then rebuilt. It works now after applying the patch. I had to do a pristine build.

Steampunkery on Nov 13, 2023

Hi, I rebuilt MCUBoot with the -p (--pristine) flag, and it is working now. I think the problem was that I applied the patch and rebuilt, but for some reason the build system couldn’t tell that the file had been changed.

Steampunkery on Nov 13, 2023