sql-edition/servers/SerialClient.py

   1 import os, termios
   2 from time import sleep
   3 import logging
   4 from serial import *
   5
   6 class SerialClientException(Exception): pass
   7
   8 class SerialClient:
   9         def __init__(self, port = '/dev/ttyS1', baud = 9600):
  10                 self.ser = Serial(
  11                         port = port,
  12                         baudrate = baud,
  13                         bytesize=EIGHTBITS,     #number of databits
  14                         parity=PARITY_NONE,     #enable parity checking
  15                         stopbits=STOPBITS_ONE,  #number of stopbits
  16                         timeout=1,           #set a timeout value, None for waiting forever, return on read
  17                         xonxoff=0,              #enable software flow control
  18                         rtscts=0,               #enable RTS/CTS flow control
  19                 )
  20
  21
  22                 self.rfh = self.ser
  23                 self.wfh = self.ser
  24                 self.wfh.write('B\n')
  25
  26         def get_fh(self):
  27                 return (self.rfh, self.wfh)
  28
  29         def __del__(self):
  30             pass
  31
  32
  33 if __name__ == '__main__':
  34         s = SerialClient("/dev/ttyS1", 9600)
  35
  36         (rfh, wfh) = s.get_fh()
  37
  38         wfh.write('B\n')
  39         print rfh.read()
  40
  41