ARM Cortex

代码说明：

ARM cortex-M3系列处理器的代码，包括通用异步收发器UART、通用定时器Timer、闪存Flash。（IAR环境工程）-ARM cortex-M3 family of processors code, including Universal Asynchronous Receiver Transmitter UART, general-purpose timers Timer, Flash Flash. (IAR Environmental Engineering)