buttonwatchdog is a program that monitors the MSB/LSB's soft on/off button, and gracefully shuts down the system when pressed. Two versions are available: one for the MSB, and one for the LSB. Use the version for the sensor board that provides power to the system.
NOTE: The sensor boards are missing a pull-up resistor, which can cause buttonwatchdog to prematurely (or completely) shut down the logger. If you want to use buttonwatchdog with the MSB, attach a pull-up resistor to T10. With the LSB, attach a pull-up resistor to T1 (NOT TP1).
buttonwatchdog has no parameters or options.