1#!/usr/bin/python
2# Author: Jon Trulson <jtrulson@ics.com>
3# Copyright (c) 2015 Intel Corporation.
4#
5# Permission is hereby granted, free of charge, to any person obtaining
6# a copy of this software and associated documentation files (the
7# "Software"), to deal in the Software without restriction, including
8# without limitation the rights to use, copy, modify, merge, publish,
9# distribute, sublicense, and/or sell copies of the Software, and to
10# permit persons to whom the Software is furnished to do so, subject to
11# the following conditions:
12#
13# The above copyright notice and this permission notice shall be
14# included in all copies or substantial portions of the Software.
15#
16# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23
24import time, sys, signal, atexit
25import pyupm_i2clcd as sainsmartObj
26
27## Exit handlers ##
28# This stops python from printing a stacktrace when you hit control-C
29def SIGINTHandler(signum, frame):
30	raise SystemExit
31
32# This function lets you run code on exit,
33# including functions from ringCoder
34def exitHandler():
35	print "Exiting"
36	sys.exit(0)
37
38# Register exit handlers
39atexit.register(exitHandler)
40signal.signal(signal.SIGINT, SIGINTHandler)
41
42# Instantiate a Sainsmart LCD Keypad Shield using default pins
43lcd = sainsmartObj.SAINSMARTKS()
44
45lcd.setCursor(0,0)
46lcd.write("Sainsmart KS")
47lcd.setCursor(1,2)
48lcd.write("Hello World")
49
50# output current key value every second.
51while(1):
52    print "Button value: ", lcd.getRawKeyValue()
53    time.sleep(1)
54
55