The Upboard is a custom arduino zero based board used on CPSS Rockets.
You can either use the Arduino IDE or Ardunio Makefile
Open the main cpss.ino
file and build.
Set $ARDMK_DIR
to the root directory of Arduino Makefile (/usr/share/arduino
with ubuntu package).
$ export ARDMK_DIR=/usr/share/arduino
$ make
$ make upload
To use interrupt based I/O you must install ASFcore and Adafruit_ZeroTimer