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kimkita avatar kimkita commented on August 12, 2024
  1. 问题出现原因:波特率会变成115200是因为所使用的ttyTHS1接口上运行着一个串口终端,如果串口接收到数据会认为是键盘数据,从而激活串口终端,这个过程中,ttyTHS1的波特率就变为了115200;验证将ttyTHS1的RX线悬空后,未出现波特率变化的异常情况;
  2. 问题解决办法:可以通过系统设置关闭ttyTHS1的串口终端功能,或是重新设计电路板使用ttyTHS2串口与光机进行通信;
  3. 设置关闭ttyTHS1的串口终端功能:
    打开文件:/etc/systemd/nvgetty.sh
    注释图中红框部分
    image

from lumos.

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