AVR === The AVR series of microcontrollers by Atmel are supported using ``avr-g++``. AVR-specific classes and functions are provided to expose the functionality of the platform, including the GPIO ports, SPI interface, etc. The AVR interface is declared in the header ``alambre/system/avr.h``, with the primary entry point being the ``avr_system`` variable described below. .. doxygenfile:: include/alambre/system/avr.h