Atmel Software Framework (ASF)
The Atmel® Software Framework (ASF) is a MCU software library providing a large collection of embedded software for Atmel flash MCUs: megaAVR, AVR XMEGA, AVR UC3 and SAM devices, include the SAM3X used on Arduino Due . It simplifies the usage of microcontrollers, providing an abstraction to the hardware and high-value middlewares ASF is designed to be used for evaluation, prototyping, design and production phases ASF is integrated in the Atmel Studio IDE with a graphical user interface or available as standalone for GCC, IAR compilers ASF can be downloaded for free Link: Atmel Software Framework ASF documentation Get Started