Raspberry Pi: how to send serial command using Ethernet?
Question: I have a python script, which will start cherrypy webserver when run in the
terminal. In the script, i use pyserial by importing `serial`, then i open up
the port /dev/ttyAMA0 and i can send any serial commands.

    
    
     @cherrypy.expose
     def login (self, **data):
        passcode = data.get("passcode", None)
        print "logging in using passcode %s"%passcode ,type(passcode)
    
        import serial
        import time
        #open connection
        serialport=serial.Serial ("/dev/ttyAMA0", 9600, timeout=0.5)
        #write in user sign in code
        serialport.write("\x03LI%s\x0D"%passcode)
        #get reply 
        reply=serialport.readlines(1)
        print reply, type(reply)
    

However, since there is an Ethernet port and i can send the serial command to
that similar device using Netcat, how can i let this script to send commands
through the ethernet port instead of the serial port? What should i change?

sorry but i'm really clueless on how to do this. i've searched through google
and i can't find answers. :(


Answer: What about using the [`socat`](http://www.dest-
unreach.org/socat/doc/socat.html) command? Using the following command line
you can make `/dev/ttyAMA0` accessible via `eth 127.0.0.1:5555`:

    
    
    socat PTY,link=/dev/ttyAMA0 TCP:127.0.0.1:5555
    

