定时器是单片机常用的其本设备，用来产生精确计时或是其他功能；msp430的定时器不仅可以完成精确定时，还能产生PWM波形输出，和捕获时刻值(上升沿或是下降沿到来的时候)。这里完成一个比较通用的PWM波形产生程序。-The timer is a microcontroller used the equipment used to generate precise timing or other features　a msp430 the timer is not only to complete the precise timing, but also to generate the PWM waveform output, and capture the time value (rising or falling edge time). Here to complete a more common PWM waveform generation process.