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还是adc的问题。。。



我用的是28377s,我打算用fpu里的关于fft例程,想从外部取样信号计算,但是adc中断采样频率一直有问题,

我查到对应的头文件

如图,ADC_SAMPLING_FREQ 应该就是调用adc中断的频率吧,但是无论我怎么改,好像采样出来都一样,也就是说这里改并没有效,为什么呢