Exercise 1
Look at Arduino "AnalogInOutSerial" example. Modify it to work
with libmaple. Extend it so that it take commands from serial
port. In particular, brigtness of LED should be set by a command
and voltage should be reported only when asked by a command.
Exercise 2
Try libmaple example controlling servo.
Modify program to take commands from serial port.
Exercise 3
Write a program using libmaple to control stepper motors.
Modify it to take command from serial port.