2021-10-07 08:21:20 [错误] 打开端口(/dev/ttyS2,9600)失败!
2021-10-07 08:21:52 [调试] 打开端口(/dev/ttyS2,9600)成功!
2021-10-07 15:13:29 [错误] 打开端口(/dev/ttyS2,9600)失败!
2021-10-07 15:13:52 [调试] 打开端口(/dev/ttyS2,9600)成功!
2021-10-07 19:40:13 [错误] 打开端口(/dev/ttyS2,9600)失败!
2021-10-07 19:40:36 [调试] 打开端口(/dev/ttyS2,9600)成功!