串口配置:https://blog.youkuaiyun.com/cmh477660693/article/details/53966638
kermit安装配置:https://blog.youkuaiyun.com/xian_2015/article/details/49443483
kermit -c 进入链接串口
注:如果出现如下错误,执行chmod 777 /dev/ttyUSB0即可。
?SET SPEED has no effect without prior SET LINE