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LUMOS-双目RGB相机项目：串口ttyTHS1波特率自动从9600变化为115200 #43

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kimkita opened this issue Aug 29, 2023 · 1 comment

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kimkita commented Aug 29, 2023

在使用串口调试软件cutecom或是使用c语言进行串口通信，发送串口数据后，串口波特率偶然会变成115200，需要重新设置波特率为9600才能与光机进行通讯。

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kimkita commented Sep 5, 2023

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；
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；
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

kimkita closed this as completed

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