Upgrade to 3.4.5 bricked the printer

jens55

@chrishamm, Linux (Ubuntu) only.
Further info: If I connect the USB port of the 6HC to my computer I do see the port but I do not know how to proceed from here. I tried connecting with PuTTY but am unable to do so (probably my lack of knowledge)
The board does not connect to the network so I believe I somehow need to connect via the USB port.
The 6HC is a standalone setup.

jay_s_uk

@jens55 do you not have a windows laptop or desktop nearby?

chrishamm

@jens55 In that case attempt to install the bossa-cli package (sudo apt install bossa-cli) and run bossa either from a terminal or from the program menu (provided you're on the latest distro release).

jens55

@jay_s_uk, I have a single Windows laptop that I use to run Fusion360 and nothing else. I would rather not use that computer to do anything else.

jens55

@chrishamm bossa-cli installed without errors but running 'bossa' from the terminal window gets me a 'command not found' and going to 'activities' at the top left of the screen and searching for 'bossa' doesn't find anything.
Going to Ubuntu Software and searching for 'bossa' doesn't find anything.
I am not sure what you mean by 'program menu' ...

chrishamm

@jens55 It may be bossa-cli then, or just try bossac -e -w -v -b Duet3Firmware_MB6HC.bin from a directory where you have the firmware file. It's hard to say because I don't use Ubuntu. I'll have a look.

PS: You need the full bossa package to get a GUI (sudo apt install bossa), bossa-cli only contains bossac. Once installed run bossa.

jens55

@chrishamm I tried bossa-cli - not found. I will try 'bossac'
Ahh, now we are in business.
Just saw your update and installed bossa - that is working
Stupid question - how do I find which serial port is the correct one - I tried ttys0 through ttys6 and I can't connect?

chrishamm

@jens55 It should be /dev/ttyACM0 or /dev/ttyUSB0 or similar.

jens55

@chrishamm Bossa gives me the option of port ttyACM0 but that doesn't connect, I get no options for a ttyUSB* at all. Listing the devices in /dev does not give me anything with 'USB' in it.

chrishamm

@jens55 /dev/ttyACM0 works for me, I just checked. What error message do you get? Perhaps you need to add your current user to the group that manages /dev/ttyACM0 (maybe sudo gpasswd -a <yourusername> dialout, then log out and back in, and try again).

jens55

@chrishamm, I get 'error could not connect to device on ttyACM0'
The user I am currently logged in under should have all rights. I could try running bossa under sudo ....
OK, running under sudo will recognize ttyACM0. What write options should I select in bossa?

chrishamm

@jens55 Erase all, Lock, and Boot to flash. Reset the board when bossa has finished.

jens55

@chrishamm WOOOHOOOO !!!! We are back in business .... thank you very much!
BTW, the 'turn off everything' command works - thanks for fixing that!