F2812DSP提供3个32位定时器，但只有定时器0对外开放。通过对该定时器进行正确的初始化，能够精准的计时。满足一些计时场合的要求。-F2812DSP provides three 32-bit timers, but only Timer 0 open. By proper initialization of the timer, capable of precise timing. The occasion to meet some timing requirements.