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    D1s读取nor flash导致音频的DMA出问题

    D1系列-RISC-V
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    • Q
      qinchangzu LV 3 last edited by

      D1s跑rtthread,配置音频驱动通过DMA固定传输32KB字节数据,中断时间大概170ms,进中断后翻转一个IO口。应用层读取nor flash,会改变音频的DMA中断时间,中断时间变为6ms左右,这个会是什么问题导致音频DMA传输速度变快了?

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      • Q
        qinchangzu LV 3 last edited by

        已解决,之前修改了底层的hal_dma.c中的中断回调函数导致的

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