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用DSP2812 cap捕获脉冲，在中断程序中计数，第一次脉冲到来时不进中断没有计数，但是二次以后都可以进中断并计数。求老师们教我求解！
你好，可以在初始化的时候在CAPFIFOx寄存器的相应位写入01，当第一个脉冲到来时就会被认为是第二个。
