dfu-util : can't detach, device does not revert to application code after reflash about candlelight_fw

[sresam89]

After some quite deeper digging, I figured I had a newer driver and old dfu-util.
Upgraded to dfu-util V0.11, all good now.
Thanks everyone

[fenugrec]

workaround : needs dfu-util 0.10 which adds a ":leave" command . This is bleeding edge so I don't think we want to modify the dfu-util command before a few weeks / months.

e.g.
$ dfu-util -S "002A002A4250431420363230", -a 0 -s 0x08000000:leave
(-a 0 needed because in DFU mode, there are two altinterfaces. first serialno is the "normal" (gs_usb) serial)

See:
"DfuSe: Allow special commands without download file" (:leave command)
https://sourceforge.net/p/dfu-util/dfu-util/ci/87df198c72d7ed6dea4b11a67ab1a447c485a305/

https://sourceforge.net/p/dfu-util/tickets/99/

This is following a download, so there have been SET_ADDRESS requests, but the last one probably pointing to the start of the last sector being written. I guess this is the problem. So if the LEAVE request makes it jump to this address, it causes a crash or overrun and it restarts from 0x00000000, still being remapped to ROM (bootloader) if the boot pins are configured that way.

[fenugrec]

Not sure what debian/ubuntu are waiting for. As of 2022/01, http://dfu-util.sourceforge.net/ is on release 0.11, but I'm still seeing 0.9 on

https://packages.ubuntu.com/jammy/dfu-util
https://packages.debian.org/stable/dfu-util

A few more months maybe...

[marckleinebudde]

Debian has a bug report for this: "dfu-util: Release very old"
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=952905

But that bug report is old itself :(

[fenugrec]

According to https://tracker.debian.org/pkg/dfu-util , 0.11 is starting to "trickle down" into distros. It's in "testing" now...

[sresam89]

@fenugrec does this firmware support IAP ?

Your first post with dfu-util -l shows the all three interfaces

Found Runtime: [1d50:606f] ver=0000, devnum=105, cfg=1, intf=1, path="1-3", alt=0, name="cannette firmware upgrade interface", serial="003800254250431420363230"
Found DFU: [0483:df11] ver=2200, devnum=12, cfg=1, intf=0, path="5-1", alt=1, name="@option Bytes /0x1FFFF800/01016 e", serial="FFFFFFFEFFFF"
Found DFU: [0483:df11] ver=2200, devnum=12, cfg=1, intf=0, path="5-1", alt=0, name="@internal Flash /0x08000000/0320001Kg", serial="FFFFFFFEFFFF"

After I flash my device with canette firmware I could not get the [0483:df11] and [1d50:606f] to show up at the same time.
If I start in bootloader mode I can see 0483 otherwise 1d50.

Am on windows machine BTW. Would that be the isssue?

[fenugrec]

@fenugrec does this firmware support IAP ?

I'm not sure what that means, sorry.

After I flash my device with canette firmware I could not get the [0483:df11] and [1d50:606f] to show up at the same time. If I start in bootloader mode I can see 0483 otherwise 1d50.

Ah yes, in my paste if you notice the different path="1-3" and path="5-1, I actually had 2 devices connected at the same time - one in normal mode, the other one rebooted in DFU mode !

Note, it's very unlikely that you have cannette hardware; it's a variant I was planning to build and release/sell but then massive STM shortage started so the project is on hold. I haven't released schematics since it's currently almost impossible to build more.

[sresam89]

@fenugrec I had my suspicions on two different devices theory, thanks for clarifying that.

I am in process of building a very small batch of gs_usb board variant.

That said I would request some assistance on my windows-os related query. I am having driver issues on windows.
I tried using native winusb driver and that wont work without admin privilege, and if use libusbk driver I cant use the "firmware upgrade interface" at all.

I am able to switch to DFU mode on ubuntu with native driver without shorting bootloader pin, is this something windows-os cant/wont support?

Not sure if this is library/driver issue or is a dfu-util on windows limitation? If you can point me the direction, I can investigate more.

[fenugrec]

That said I would request some assistance on my windows-os related query.

Please open a new ticket. I'm leaving this one open for this specific issue related to recent dfu-util updates­.