This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
不清楚楼主的串口通讯速度有多快。
我在一般应用中,用一个缓冲区作为两个串口的数据交换,完全没有问题。
如果通讯速率较高,我会用pingpong模式,用两个缓冲区。
还没试过用dma传输两个串口的数据。