From 546f2f27f665872d0388b37fbfa33bc140402018 Mon Sep 17 00:00:00 2001
From: ACC Murphy <wheel@ucc.asn.au>
Date: Sun, 6 Jan 2008 06:07:48 +0000
Subject: [PATCH 1/1] Modified to remove direct manimpulation of serial port
 using termios code found randomly on the net by Bernard

Now using
http://pyserial.sourceforge.net/

located in the python-serial package


Has been tested and working for a quarter of an hour at UCC :)
---
 sql-edition/servers/SerialClient.py | 62 ++++++++++++-----------------
 1 file changed, 26 insertions(+), 36 deletions(-)

diff --git a/sql-edition/servers/SerialClient.py b/sql-edition/servers/SerialClient.py
index d17b764..4025e3b 100644
--- a/sql-edition/servers/SerialClient.py
+++ b/sql-edition/servers/SerialClient.py
@@ -1,46 +1,26 @@
 import os, termios
 from time import sleep
 import logging
+from serial import *
 
 class SerialClientException(Exception): pass
 
 class SerialClient:
-	BaudRates = {
-		110: termios.B110,
-		300: termios.B300,
-		600: termios.B600,
-		1200: termios.B1200,
-		2400: termios.B2400,
-		4800: termios.B4800,
-		9600: termios.B9600,
-		19200: termios.B19200,
-		38400: termios.B38400,
-		57600: termios.B57600,
-		115200: termios.B115200,
-	}
-
-	def __init__(self, port = '/dev/ttyS0', baud = 9600):
-		self.port = port
-		self.baud = baud
-		try:
-			self.handle = os.open(port, os.O_RDWR)
-		except:
-			raise SerialClientException('Unable to open port')
-		self.oldmode = termios.tcgetattr(self.handle)
-		cc = [0]*len(self.oldmode[6])
-		cc[termios.VMIN] = 1
-		cc[termios.VTIME] = 0
-		termios.tcsetattr(self.handle, termios.TCSANOW,
-			[
-			termios.IGNPAR, # c_iflag
-			0, # c_oflag
-			termios.CS8|termios.CLOCAL|termios.CREAD, # c_cflag
-			0, # c_lflag
-			self.BaudRates[self.baud], # c_ispeed
-			self.BaudRates[self.baud], # c_ospeed
-			cc])
-		self.rfh = os.fdopen(self.handle, 'r')
-		self.wfh = os.fdopen(self.handle, 'w')
+	def __init__(self, port = '/dev/ttyS1', baud = 9600):
+		self.ser = Serial(
+			port = port,
+			baudrate = baud,
+			bytesize=EIGHTBITS,     #number of databits
+			parity=PARITY_NONE,     #enable parity checking
+			stopbits=STOPBITS_ONE,  #number of stopbits
+			timeout=1,           #set a timeout value, None for waiting forever, return on read
+			xonxoff=0,              #enable software flow control
+			rtscts=0,               #enable RTS/CTS flow control
+		)
+	
+
+		self.rfh = self.ser
+		self.wfh = self.ser
 		self.wfh.write('B\n')
 
 	def get_fh(self):
@@ -49,3 +29,13 @@ class SerialClient:
 	def __del__(self):
 	    pass
 
+
+if __name__ == '__main__':
+	s = SerialClient("/dev/ttyS1", 9600)
+	
+	(rfh, wfh) = s.get_fh()
+
+	wfh.write('B\n')
+	print rfh.read()
+
+
-- 
2.20.1