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现在我有两路模拟正弦波信号输入，通道为A7和A5。这两路信号的频率我已经用定时器捕获得到。我现在要测量这两路信号的幅值和相位。因此，我要通过ADC12模块对这两路信号在一个周期内多点采样。比如采集64个点。那么要怎么编程，才能采集到64个点（两路信号共128个点）。
根据你的正玄波信号的周期，设置定时器为周期的64分之一，用定时器中断启动采样
