检测DMA传输是否完成的4种方法

摘自STM32F2xx_StdPeriph_Lib_V1.1.0 DMA例程readme.txt

There are different options to check on the DMA end of transfer:

  1. Use DMA Transfer Complete interrupt. // 传输完成中断
  2. Use DMA enable state (the DMA stream is disabled by hardware when transfer
    is complete). //数据流使能状态
  3. Use DMA Stream transfer counter value (the counter value is decremented when
    transfer is ongoing and is equal to 0 at the transfer end). //数据流传输计数
  4. Use DMA Transfer Complete flag (polling mode). //输出完成标志，仅适用于轮询模式
posted @ 2022-01-06 19:53  中庭之园  阅读(1810)  评论(0)  编辑  收藏  举报