https://i.stack.imgur.com/qS1OL.png
https://i.stack.imgur.com/ZMWju.png
https://i.stack.imgur.com/r0IZJ.png
I have attempted many ways of trying to connect the serial ports but I'm not sure how as they all show input output error but the system does recognise something is connected as shown on the screenshots. If anyone knows where my error lies please do let me know
I have tried edit the coding to /dev/ttyS39 and 40 also /dev/ttyS29 and 30 I'm not sure how to get the ports to connect.