A simple linux driver for MSI MEG Coreliquid S360 AIO watercooling
Having unsuccessfully tried to use liquidctl (https://github.com/liquidctl/liquidctl) to drive my MSI MEG coreliquid AIO watercooling under linux (specifically Debian 12), I decided to build mine. I don't care about the display on this AIO, I just want it to react to CPU temperature. I only allow 5 predefined modes to make the link between temperature and fan and pump speed: SILENT = 0, BALANCE = 1, GAME = 2, DEFAULT = 4, SMART = 5. In this first version, the CUSTOMIZE = 3 mode is not allowed, as the 5 others should do the job. Here are pictures from the MSI soft for Windows, showing the link between temperature and fan speeds for three modes.
You need to install libsensors-dev and libhidapi-dev to compile. Then, it is as simple as:
gcc my_msi_driver.c -lhidapi-hidraw -lsensors -o /where/you/want/my_msi_driverHere, I use libhidapi-hidraw, but I guess it would work as well with libhidapi-libusb0. I choose the primer because it seems to be the recommanded one these days.
my_msi_driver -M mode [ startd ]
-M sets the cooling mode to mode.
startd starts the driver daemon. This should rather be done through systemctl (see below).
If you want this program to run as a daemon on your system, just:
sudo cp my_msi_driver.service /etc/systemd/system/In this file, adapt the ExecStart path for where you put the executable, and choose you cooling mode. Then run:
sudo systemctl daemon-reload
sudo systemctl enable my_msi_driver.serviceThe driver will start as a daemon on next boot. If you want it to run at once:
sudo systemctl start my_msi_driver