Raspberry Pi Forums

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 #!/usr/bin/python           
# Xaver's TCP server. Runs on the Raspberry Pi.

import socket               # Import socket module
s = socket.socket()         # Create a socket object
host = '75.144.181.xxx'     # Get local machine name
port = 109xx               # Reserve a port for your service.

import serial

DEVICE = '/dev/ttyUSB0' # the arduino serial interface (use dmesg when connecting)
BAUD = 38400
ser = serial.Serial(DEVICE, BAUD)

print 'Server started!'
print 'Waiting for clients...'

s.bind((host, port))        # Bind to the port
s.listen(5)                 # Now wait for client connection.
c, addr = s.accept()     # Establish connection with client.
print 'Got connection from', addr
while True:
   msg = c.recv(2) # get 2 bytes from the TCP connection
   ser.write(msg)  # write the 2 bytes to the serial interface

Code: Select all

 pi@raspberrypi ~/Desktop $ sudo python tcpserv
Server started!
Waiting for clients...
Traceback (most recent call last):
  File "tcpserv", line 18, in <module>
    s.bind((host, port))        # Bind to the port
  File "/usr/lib/python2.7/socket.py", line 224, in meth
    return getattr(self._sock,name)(*args)
socket.error: [Errno 99] Cannot assign requested address