Proper way to load .mix files

Sajar · April 26, 2016, 6:48am

All of the documentation that outlines the method of loading a custom .mix file links to a dev article that no longer exists.

How does one load a .mix file? Is it possible using Qgroundcontrol?

tumbili · April 27, 2016, 5:46am

The mixer file is set in the vehicle configuration file, e.g. see
https://github.com/PX4/Firmware/blob/master/ROMFS/px4fmu_common/init.d/3031_phantom#L47

The actual function call where the mixer is loaded happens here during startup procedure

github.com

PX4/Firmware/blob/master/ROMFS/px4fmu_common/init.d/rc.interface#L46


fi


#
# Set the default output mode if none was set.
#
if [ $OUTPUT_MODE = none ]
then
	if [ $USE_IO = yes ]
	then
		# Enable IO output only if IO is present.
		if [ $IO_PRESENT = yes ]
		then
			set OUTPUT_MODE io
		fi
	else
		set OUTPUT_MODE fmu
	fi
fi


#
# If OUTPUT_MODE = none then something is wrong with setup and we shouldn't try to enable output.

Regards,
Roman

Sajar · April 29, 2016, 12:40am

Thanks for your reply!

So if I am understanding you correctly getting the software to load a mixer is as simple as setting line 47 to reference the correct mixer file of choice? Is that simply by file name then?

tumbili · April 29, 2016, 5:31am

Yes, that is correct!