Make: Avr Programming: Learning To — Write Softwa...

: Implementing UART (serial), SPI, and I2C/TWI .

: Direct port manipulation to build "Cylon Eyes" (LED scanners) . Make: AVR Programming: Learning to Write Softwa...

: Building a square-wave organ, an AM radio, a temperature logger, and custom USB devices . : Implementing UART (serial), SPI, and I2C/TWI

by Elliot Williams is a definitive guide for makers who want to move beyond the Arduino IDE's abstractions and program Atmel’s AVR microcontrollers at the register level . Published by Maker Media/O'Reilly in 2014, it remains a highly-rated resource for those seeking to "squeeze" more performance and efficiency out of 8-bit chips like the ATmega328p . Core Premise: Moving Past Abstraction : Implementing UART (serial)