Make: AVR Programming

Part II. Intermediate AVR

This section makes you a more efficient programmer of the chip and expands the universe of what you’ll think an AVR can do. You’ll start doing cool things with the internal hardware peripherals and some more sophisticated tricks in firmware using what you already know. This section provides the big payoff—the tools to do things with a bare AVR chip that you just can’t do without knowing a little about how the hardware works.

Mastery of microcontrollers starts with good use of the interrupt system. Chapter 8 shows you how to allow events in the outside world to directly and instantaneously call portions of your code. You’ll use this speed to build a noncontact capacitive touch sensor out of aluminum foil and tape that will ...