avrlib

Avrlib is C/C++ library for AVR microcontroller's (Tiny, Mage, Xmega) from Atmel/Microchip.

Avrlib help with:

pins (pin.hpp, porta.hpp...)
timers (time1.hpp, time3.hpp...)
usart (usart.hpp, usart0.hpp...)
comunications (format.hpp, sstream.hpp, buffer.hpp, bluetooth.hpp)
utility functions (util.hpp, algorithm.hpp, math.hpp)
eeprom (eeprom.hpp)
...