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用TMS320F28377S ADC模块的ADCA中断触发DMA,DMA被触发,ADC中断仍然产生。请教可能会是什么原因?如何排查?

如题,请高手指点下

  • TMS320F2837xS Delfino Microcontrollers Technical Reference Manual (spruhx5e) 4.2.3段有如下说明:

    Upon receipt of a peripheral interrupt event signal, the DMA will automatically send a clear signal
    to the interrupt source so that subsequent interrupt events will occur.

    似乎DMA响应后应该清除中断信号,不会再产生ADC中断了。

  • 您好,您误解了摘取的这段说明的意思,DMA响应中断后会清除该中断触发的标志位,使该中断可以继续产生。