micro:bit & /dev/ttyACM*on GNU/Linux systems - bbc-microbit

Question

I have micro:bit attached to my laptop on which running Xubuntu 18.04.4 LTS.
After I attached micro:bit an icon appeares on XFCE4 Desktop which can
to use to mount this device to
/media/MyUserName/MICROBIT/
This way I can pair the device 'BBC micro:bit CMSIS-DAP' and my laptop
by using https://python.microbit.org/v/2.0 in my Google Chrome browser.
But in mu-editor I can't do this, can't use neither REPL, nor FILE
because I get this message box:
"Colud not find an attached device
Please make sure the device is plugged into this computer.
It must have a version of MicroPython (or CircuitPython) flashed onto it
before the REPL will work.
Finally, press the device's reset button and wait a few seconds before
trying again."
$ lsusb
ID 0d28:0204 NXP LPC1768
This line above is for the micro:bit attached.
$ ls /dev/ | grep tty
In the output of the command above there is not a /dev/ttyACM0
or other ACM* device out there.
Why is not there such a device /dev/ttyACM* out there?
I suspect mu-editor does not find the device because there is no such
device /dev/ttyACM* out there.
How can I solve the problem for mu-editor?

Answer 1

I use Debian Linux. There are two things you may need to do:
I had to update the firmware on the micro:bits recently to be able to continue using the mu-editor. The instructions on how to do this are here:
[https://microbit.org/get-started/user-guide/firmware/]
Mount the micro:bit. This can be done by double clicking on the 'MICROBIT' shown in e.g. Nautilus, or from the command line using udisksctl. Please find a bash script below called microbit_mount.sh which uses udisksctl to mount and dismount a microbit. To mount a microbit, use the command:
microbit_mount.sh mount
To unmount a microbit, use
microbit_mount.sh unmount
I have these commands aliased to mm amd md.The microbit will appear in /media/MICROBIT. You may need to remount the microbit after each flash.
#!/bin/bash
# microbit_mount.sh
# mount and unmount microbit
# modified from https://askubuntu.com/questions/342188/how-to-auto-mount-from-command-line
BASEPATH="/media/$(whoami)/"
MICRO="MICROBIT"
if [ $# -eq 0 ]
then
echo "no argument supplied, use 'mount' or 'unmount'"
exit 1
fi
if [ $1 == "--help" ]
then
echo "mounts or unmounts a BBC micro:bit"
echo "args: mount - mount the microbit, unmout - unmount the microbit"
fi
# how many MICRO found in udisksctl dump
RESULTS=$(udisksctl dump | grep IdLabel | grep -c -i $MICRO)
case "$RESULTS" in
0 ) echo "no $MICRO found in 'udkisksctl dump'"
exit 0
;;
1 ) DEVICELABEL=$(udisksctl dump | grep IdLabel | grep -i $MICRO | cut -d ":" -f 2 | sed 's/^[ \t]*//')
DEVICE=$(udisksctl dump | grep -i "IdLabel: \+$DEVICELABEL" -B 12 | grep " Device:" | cut -d ":" -f 2 | sed 's/^[ \t]*//')
DEVICEPATH="$BASEPATH""$DEVICELABEL"
echo "found one $MICRO, device: $DEVICE"
if [[ -z $(mount | grep "$DEVICE") ]]
then
echo "$DEVICELABEL was unmounted"
if [ $1 == "mount" ]
then
udisksctl mount -b "$DEVICE"
exit 0
fi
else
echo "$DEVICELABEL was mounted"
if [ $1 == "unmount" ]
then
udisksctl unmount -b "$DEVICE"
exit 0
fi
fi
;;
* ) echo "more than one $MICRO found"
;;
esac
echo "exiting without doing anything"

Answer 2

I installed Xubuntu 20.04 and on this system mu-editor works in the Files mode and REPL mode with the attached micro:bit.