MCU Protocol error

[BETLOG]

I did a software update via fluidd gui today, not the first time I have done this, but now i have a serious issue:

MCU Protocol error

This is frequently caused by running an older version of the
firmware on the MCU(s). Fix by recompiling and flashing the
firmware.

Your Klipper version is: v0.12.0-86-gdaf875e6
MCU(s) which should be updated:
mcu: Current version v0.10.0-530-g3387a9c2-dirty-20220807_204823-mkspi
rpi: Current version v0.11.0-121-ga5fb2076
Up-to-date MCU(s):

Once the underlying issue is corrected, use the "RESTART"
command to reload the config and restart the host software.

mcu 'rpi': Command format mismatch: query_adxl345 oid=%c rest_ticks=%u vs query_adxl345 oid=%c clock=%u rest_ticks=%u

I do vaguely recall reading an MKS note about not doing any updates, but (iirc) that was specific to Armbian, ie: not fluidd/klipper components.

So far I have tried:

mv /home/mks/klipper /home/mks/klipper_$(date +%Y-%m-%d)
git clone https://github.com/Klipper3d/klipper
./klipper/scripts/install-octopi.sh
cd ~/klipper/
make menuconfig
    STM32
    STM32F407
    48KiB
    8MHz
    USART1 PA10/PA9
    250000
make
sudo mkdir /media/mks
sudo chown mks:mks /media/mks
sudo mount /dev/mmcblk0p1 /media/mks
sudo cp /home/mks/klipper/out/klipper.bin /media/mks/mks_skipr.bin
ls /media/mks
mks_skipr.bin
sudo umount /media/mks

Physically switch TF card from host to mcu slots. Shutdown. Power up. Confirm flash successful:

sudo mount /dev/mmcblk0p1 /media/mks
ls /media/mks
mks_skipr.CUR

Where do I go from here?

Is flashing the 2+ YEAR old stock MKS image even a solution? I'm pretty sure that will have the same issue as recompiling klipper, as above.

[BETLOG]

After some closer scrutiny on WHAT has the outdated version, i realise the MCU flash is working fine, its the rpi component thats outdated..... I don't understand why thats not determined by the git clone

Original error:

Your Klipper version is: v0.12.0-86-gdaf875e6 MCU(s) which should be updated: mcu: Current version v0.10.0-530-g3387a9c2-dirty-20220807_204823-mkspi rpi: Current version v0.11.0-121-ga5fb2076 Up-to-date MCU(s):

Error after reflashing MCU:

Your Klipper version is: v0.12.0-86-gdaf875e6 MCU(s) which should be updated: rpi: Current version v0.11.0-121-ga5fb2076 Up-to-date MCU(s): mcu: Current version v0.12.0-86-gdaf875e6

I am confused; why isn't the rpi updating? Is fluidd pulling an older version? I don't understand why the host version isnt determined by recompiling ~/klipper git pull directory. I must be overlooking something basic.

[BETLOG]

Ok, so I'm a noob still. A noob who NOW knows he needs to do a make specifically for the host, as well as one for the printer hardware mcu.

https://www.klipper3d.org/RPi_microcontroller.html#install-the-rc-script

Install the rc script[¶](https://www.klipper3d.org/RPi_microcontroller.html#install-the-rc-script)
If you want to use the host as a secondary MCU the klipper_mcu process must run before the klippy process.

After installing Klipper, install the script. run:

cd ~/klipper/
sudo cp ./scripts/klipper-mcu.service /etc/systemd/system/
sudo systemctl enable klipper-mcu.service
Building the micro-controller code[¶](https://www.klipper3d.org/RPi_microcontroller.html#building-the-micro-controller-code)
To compile the Klipper micro-controller code, start by configuring it for the "Linux process":

cd ~/klipper/
make menuconfig
In the menu, set "Microcontroller Architecture" to "Linux process," then save and exit.

To build and install the new micro-controller code, run:

sudo service klipper stop
make flash
sudo service klipper start
If klippy.log reports a "Permission denied" error when attempting to connect to /tmp/klipper_host_mcu then you need to add your user to the tty group. The following command will add the "pi" user to the tty group:

sudo usermod -a -G tty pi```