已知外部输入方波频率为1kHz,如何对其的频率进行检测?判断其频率是否真的是1kHz?
谢谢!
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您好!
那用eCAP模块的话是不是会增加中断?
因为输入频率已知,能不能通过定时器定时读取管脚电平来判断频率是否偏移?(定时器在其他功能中已在使用,不用额外配置其他中断)
谢谢