initial commit

test_lcd.py

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+#!/usr/bin/env python
+#
+# LCD test program using the lcd_class.py 
+# Use this program to test LCD wiring
+#
+# $Id: test_lcd.py,v 1.9 2014/06/04 08:31:34 bob Exp $
+# 
+# Author : Bob Rathbone
+# Site   : http://www.bobrathbone.com
+#
+# License: GNU V3, See https://www.gnu.org/copyleft/gpl.html
+#
+# Disclaimer: Software is provided as is and absolutly no warranties are implied or given.
+#             The authors shall not be liable for any loss or damage however caused.
+#
+
+import sys
+import os
+import atexit
+import traceback
+import RPi.GPIO as GPIO
+from lcd_class import Lcd
+stderr = sys.stderr.write;
+
+lcd = Lcd()
+
+# Try to trap any exit errors and cleanup GPIO
+def exit_fn():
+	if not traceback.format_exc().startswith('None'):
+		s=traceback.format_exc()
+
+# Register
+atexit.register(exit_fn)
+
+def interrupt():
+        return False
+
+boardrevision = 2
+stderr("Are you using an old revision 1 board y/n: ")
+answer = raw_input("")
+if answer == 'y':
+	boardrevision = 1
+
+print "Use Ctl-C to exit"
+
+lcd.init(boardrevision)
+lcd.setWidth(16)
+lcd.line1("Bob Rathbone")
+
+while True:
+	try:
+		lcd.scroll2("Line 2: abcdefghijklmnopqrstuvwxyz 0123456789",interrupt) 
+	except KeyboardInterrupt:
+		print "\nExit"
+		GPIO.setwarnings(False)
+		GPIO.cleanup()
+		sys.exit(0)
+
+
+