Hi, I am working on a serial to ethernet server with 2 Raspberry Pis to allow data to flow both ways. Here is the setup:
serial device <–(serial to USB converter)–> Pi A <–(ethernet)–> Pi B <–(serial to USB converter)–> computer
I can send data from Pi to Pi over ethernet and print serial data on Pi B from computer so I know my connections are good. I am trying to use something like tcp_serial_redirect or rfc2217_server to allow the data to be redirected from serial to ethernet and back.
I am very inexperienced with networking and am struggling to accept the connection on the port. Neither program seems to get past:
client_socket, addr = srv.accept()
They don’t have an error or quit, just wait. It seems like it is trying to open the port but not being accepted. So I tried to use a simple block from the socket documentation and either nothing happens or I get the message “cannot open socket.” If anyone has any insight I would really appreciate it, I know this is probably really easy for networking folks but I have spent an embarassing amount of time on it to no avail.
At the end of the day I am trying to have a version of one of the two programs linked above that I can have running on both machines. I assume they would have to be modified in some way to have a server/client relationship and that is where I am really struggling. Thanks very much in advance.