calliope-mini: flash script not very cleanly written

[miri64]

While testing #11395, I noticed that the flash script for the calliope mini isn't that well written. It makes some assumptions that just aren't given or expects given configuration that isn't documented anywhere:

• It assumes that Linux always auto-mounts at /media/${USER} which it doesn't (e.g. in Arch it is /run/media/${USER})
  

  RIOT/boards/calliope-mini/dist/flash.sh

  Lines 24 to 26 in 5e789c6

  	if [ ${OS} = "Linux" ]
  	then
  	MOUNT=/media/${USER}/${NAME}

• Appearently it assumes that the storage device of the calliope mini is configured in the fstab and can somehow be mounted this way without root. Otherwise I can't explain

  RIOT/boards/calliope-mini/dist/flash.sh

  Line 42 in 5e789c6

  mount ${MOUNT}

  to myself.
• It exits on 0 in its error states, so make returns success even if flashing failed.

Sadly, after a short while of trying to fix it I had to give up, since I'm short on time, but I suggest instead of trying to infer the device somehow from the mount-point to use tools like lsblk (on Linux) and diskutil (on OSX) to determine the device name from the MINI label (maybe even confirm the USB-ID) and mount the device using udiskctl [1] [2] if it is available to mount it (don't know the equivalent on OSX though).

[aabadie]

Maybe, you can try to flash this board using openocd, reusing the same configuration that is used for the microbit ? I suspect this board is using a DAPLink programmer. Maybe pyocd would also work.

[aabadie]

Seems to be the case indeed: https:/calliope-mini/calliope-project-template/blob/master/openocd.cfg

[aabadie]

The flash script was removed in #11608 so we can close this one.