Amazing print! I have to try it one of these days when I solve the pigment deposition issue.
Can you explain whatās this?
Itās kernelspace driver which you use instead of devterm-printer.service
no CUPS yet.
See prepare (No devterm linux headers package) and install files.
see py scripts for userspace interface.
As burn parameters are exposed via ioctl it is possible to do grayscale image.
For me effect which I wanted is realised.
BTW: Font borrowed from 24-pin matrix - here python scripts to export/render this font in python GitHub - korneliuszo/png2escp
This looks very cool, to install the cups driver do I need to follow the previous prepare and install instructions or just follow the cups install?
Yes you need to install driver.
You can copy .ko file to /lib/modules/${uname -r}/ and do depmod for auto loading module
new here, iām trying to install this driver but iām having problems to compile it.
appears an error if i try to compileā¦ any tips or help please??
Itās probably problem which occured for me too.
Linux kernel changed revision in armbian but devterm team didnāt update its linux build.
Try installing https://mirrors.dotsrc.org/armbian-apt/pool/main/l/linux-5.10.60-rockchip64/linux-headers-current-rockchip64_21.08.1_arm64.deb
thanks a lot for the reply, solved my problem when i compile the driver 
but i think iām making some mistakes when i try to make it autoload or similar 
i tried insmod, modprobe, copy the .ko file on the modules directory, etcā¦ but the driver didnāt load automatically on booting the system 
how i can proceed for install the driver correctly (surely iām wrong on some step when i try to install it)
another detail i found when i try the github codes itās on the python scriptsā¦ keep appearing an error like this and make impossible to use itā¦ any help??
OSError: [Errno 25] Inappropiate ioctl for device
this error appear on mtp02_ioctl.py :: get_settings (looks like on the code the device is āiiiiā or maybe this is a problem related to driver installationā¦)
sorry for keep disturbing with these questions, and thanks a lot for any help
Iāve put .ko into
/lib/modules/5.10.60-rockchip64/mtp02/mtp02.ko
and then run depmod, and it loads at start of system.
For ioctl I think you made file called /dev/mtp02.0 which souldnāt be made - itās udev role to create it.
(sorry was quite busy last daysā¦)
hope all of you had an awesome christmas
back to topic, i tried the depmod and keeps without being automatically loadedā¦
i found this error into ā/var/log/kern.logā file:
mtp02: loading out-of-tree module taints kernel.
mtp02: module verification failed: signature and/or required key missing - tainting kernel.
looks like exists some kind of error when the kernel load the moduleā¦ and i tried to apply on the āMakefileā the line āCONFIG_MODULE_SIG=nā to bypass this check but looks like keeps having the same problemā¦
maybe youāre using other type of OS image or similar? (autocompiled or something?)
related to the /dev/ file, i checked and itās automatically created, for this part looks like nothing wrong but keeps throwing the same problem when try to use the python codes.
Thanks a lot for any help
taint kernel is normal.
creating /dev/ means dtbo is applied correctly
2021-12-21 - Iāve changed ioctl structure - you need have module/python code in sync.
bwprint.py should work without problems.
can you strace ./grayprint.py ?
Made aur packages for tools from repo:
Needs image 20220117 or updated u-boot.
For running dkms you need to install linux-clockworkpi-a06-headers manually.
Also you need to append /boot/extlinux/extlinux.conf
with line
FDTOVERLAYS /overlays/mtp02-a06-devterm.dtbo
Apologies, the forum wouldnāt let me post again in the manjaro-linux-support topic. But here is the print-to-file you requested. Thanks again for your help!
Fixed in new version of driver.
Update package from aur and modify printer in cups to reload ppd file