Switch button freezes Chameleon about chameleonmini-rebooted

[nanderh]

Same problem here,
Flashed latest release firmware, uploaded a few dumps and was functioning fine.
Then used the switch card button and it froze, also not being recognized in Windows and cannot get into DFU mode.
Got leds 3, 5 and 7 solid lit up.

Tried flashing through the headers with avrdude. Currently don't have an AVR ISP (ordered one though) so tried using a Bus Pirate and an Arduino with ISP sketch. In both cases the chameleon atxmega is not being recognized.

Although one question/comment, in the wiki example pictures about Atmel Studio, its shown to use target voltage of 4.9V, is this correct?
https://github.com/iceman1001/ChameleonMini-rebooted/wiki/How-to-program-with-AVRISP-mkII

[nanderh]

So AVR ISP arrived and reflashed it.
Went back through closed issues and it seems that after November 7th something snuck in.
After flashing https://github.com/iceman1001/ChameleonMini-rebooted/releases/tag/untagged-f7d80732aeb494e62fba can confirm the bug is not there.

[Yafsec]

Same here. Worked fine until I switched from card to a detect slot. 3 leds red, Gui Hangs, Black button boot loader mode doesn't work either. Latest pre compiled firmware. Ordered AVR ISP as well.

[nanderh]

Same here switching to detect slot it froze.

Looking a the commit history, on the 27/11/2019 a bunch of changes were made to the detection functionality. Pure speculation but it could be from there.

After flashing the above listed commit, detection functionality works fine again.

[iceman1001]

Just to make sure. You are all having a RevE Rebooted device ? Not a RevG based device like rev g, revG rdv2.0, tiny, tiny pro.

[Yafsec]

RevE Rebooted Proxgrind

[nanderh]

RevE Rebooted from Lab401 here

[iceman1001]

@grspy .... is it something you have time to look into?

[grspy]

Damn, I don't have the RevE with me... and I'll stay away from home for a while. I should be able to test it around October.
Have you guys tried out any previous releases? I guess that happens only on the latest release.

[Yafsec]

Cannot test atm as it is fully and utterly bricked... ;) But will try the November release as soon as my AVR ISP is in

[iceman1001]

usually, as long as you can make the device enter bootmode, you can flash it with a default fw.
but otherwise it sounds strange.
To recap how to trigger this behavior,

• Upload dumps, which kind of dump files?
• Switch button, is it on certain dump?

[edit]
MF_CLASSIC_DETECTION seem to trigger problems.

[nanderh]

In my case I flashed the latest firmware and I had 2 dumps uploaded, in the following slots:

1. Mifare 1K 7 byte UID
2. Mifare 1k 4 byte UID
3. MF_CLASSIC_DETECTION

I had used slot 2 several times and it was working correctly.
As soon as I changed slot to the detection it froze with 3 solid leds.

Recreated the same situation with the November 7th firmware and that did not freeze.

[Yafsec]

Latest firmware as well, slot 1 MF_Detection, slot 2 Mifare 1k dump. Slot 2 selected and worked, switched to slot one to read and nothing. Connected to pc, gui hangs. Hold black button while connecting USB, nothing.
When connected to Usb, 1 led on, when I press black while connected, 3 leds on.

[nanderh]

@iceman1001 if needed I got some time to look into it, not too familiar with C though.
Got any specifics in mind to check out?

[iceman1001]

WinGUI hangs? That is for another repo.

So, only simulating a MFC dump on different slots works?
its when going between / or only MF_CLASSIC_DETECT that triggers device to be unstable?

[iceman1001]

MF_CLASSIC_DETECTION mode, does it work?

[nanderh]

Exactly, switching from simulating a dump to MF_CLASSIC_DETECTION triggered it.

[Yafsec]

Finally got my AVR ISP in, following the flashing guide but it states:
"You can upload a full flash image (e.g. "Full.hex") like this: avrdude -p x32a4u -P usb -c avrispmkII -U flash:w:Full.hex"
But just for clarification, what is Full.hex?

[ceres-c]

I flashed the original rev. G with
avrdude -c atmelice_pdi -p x128a4u -U application:w:Chameleon-Mini.hex:i -U eeprom:w:Chameleon-Mini.eep:i
Adapt this command to your device (different flasher, MCU and filenames)