参考文章

内核配置

Device Drivers  --->
    [*] USB support ---> 
      <*> USB Serial Converter support --->
        <*> USB Winchiphead CH341 Single Port Serial Driver

串口设备一般是 /dev/ttyUSB0

非 ROOT 用户访问权限

添加用户到 dialout 组:

# gpasswd -a <name> dialout