An AT91SAM7 Serial-IO/UART and interrupt example for the Atmel AT91SAM7S64 (should work with all AT91SAM after minimal changes) which demonstrates UART interfacing (serial I/O), interrupt/exception-handling and lots of gcc-specials.

基于AT91SAM单片机的驱动程序，包括定时器，中断，串口，等等，方便易懂，易于移植-AT91SAM microcontroller based on the driver, including the timer, interrupt, serial port, and so on, easy to understand, easy to transplant