STM32L152R8T6驱动LCD，串口DMA通信，定时器中断。-STM32L152R8T6 drive LCD, serial DMA communication, timer interrupt.

一个DSP 的定时器中断例程，包括：初始化和中断程序，供初学者参考(A DSP timer interrupt routine, including: initializing and interrupting programs for reference for beginners)