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LP-MSPM0L1306: ADC-DMA采样频率不可调

Part Number: LP-MSPM0L1306
Other Parts Discussed in Thread: MSPM0L1306, SYSCONFIG

在使用mspm0_sdk_1_30_00_03中的例程“examples\nortos\LP_MSPM0L1306\driverlib\adc12_max_freq_dma”时,我希望更改ADC的采样频率。例程中,Sampling Mode时Auto,Sample Period Source是Sample Time 0,我更改的下方的Desired Sample Time 0为1ms,然后接入方波信号观察。如果Sample Time是1ms,那么每个方波周期应该采样10个点左右,但是现在每个周期采了好几百个点,采样频率并未发生变化。

以下是自动采样模式的时序图,据我的理解,Sample Window对应的在这里就是Sample Time 0。