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28335用外部中断触发,外部信号的频率是200HZ,但是,根据时钟计算,发现中断一直在触发,触发频率不是200HZ,



28335用外部中断触发,外部信号的频率是200HZ,但是,根据时钟计算,发现中断一直在触发,触发频率不是200HZ,