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DSP2812 AD双通道采样问题



单通道采样没问题,幅度、频率都是对的,但是一到两个通道就完全不对了

我用的级联模式,并发采样和顺序采样都试过了,还是不行(采样通道为A0和B0)

启动AD用的EVA的T1周期中断,采样频率设为1M;告诉时钟=75M   ADCLK的设置值KPS从0-15都试过了,有时候两通道采出来一模一样的值,但幅度、频率都是不对的,费解了。。。

求助各位高手,多谢