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请教:如何定时器中断的方式,周期地写入特征值?



每当进入中断后,写入特征值。但是我很郁闷的是,单次写入特征值,是没有问题的。而且定时器中断,也是很准确的。但是以定时器中断的方式,写入特征值,就无法写入。求高人指教。