Make an Arduino-Controlled Robot

Appendix E. Programming Constructs

The code in this book takes advantage of a number of Arduino functions that are summarized in this appendix. See the online Arduino reference for each function if you want more detail.

Digital I/O

pinMode(pin, mode);

Configures a digital pin to read (input) or write (output) a digital value; see http://arduino.cc/en/Reference/PinMode

digitalRead(pin);

Reads a digital value (HIGH or LOW) on a pin set for input; see http://arduino.cc/en/Reference/DigitalRead

digitalWrite(pin, value);

Writes the digital value (HIGH or LOW) to a pin set for output; see http://arduino.cc/en/Reference/DigitalWrite

pulseIn(pin, pulseType, timeout);

Returns the pulse width in microseconds of a changing digital signal on the given pin. pulseType ...