1 #!/usr/bin/python 2 # Author: Jon Trulson <jtrulson (at] 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 24 import time, sys, signal, atexit 25 import pyupm_i2clcd as sainsmartObj 26 27 ## Exit handlers ## 28 # This stops python from printing a stacktrace when you hit control-C 29 def SIGINTHandler(signum, frame): 30 raise SystemExit 31 32 # This function lets you run code on exit, 33 # including functions from ringCoder 34 def exitHandler(): 35 print "Exiting" 36 sys.exit(0) 37 38 # Register exit handlers 39 atexit.register(exitHandler) 40 signal.signal(signal.SIGINT, SIGINTHandler) 41 42 # Instantiate a Sainsmart LCD Keypad Shield using default pins 43 lcd = sainsmartObj.SAINSMARTKS() 44 45 lcd.setCursor(0,0) 46 lcd.write("Sainsmart KS") 47 lcd.setCursor(1,2) 48 lcd.write("Hello World") 49 50 # output current key value every second. 51 while(1): 52 print "Button value: ", lcd.getRawKeyValue() 53 time.sleep(1) 54 55
