This document describe how to build firmware and burn on MUXSAN can bridge
sudo apt-get install gcc-avr binutils-avr avr-libc
#> cd <clone repo>/leaf-can-bridge-3-port-CCS/Debug
clean all win pre complied files to avoid issue like the following one #2 (comment)
#> make -f Makefile.multiOS clean
build
#> make -f Makefile.multiOS all
#> avrdude -c avrispmkII -p ATMega32c4 -P usb -e -U flash:w:<your hex file>
NOTE: You should use the correct -c option depending on avr flasher
Not tested, please refer to Build on Linux guide