1 #!/usr/bin/python 2 # Author: Zion Orent <zorent (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_gp2y0a as upmGp2y0a 26 27 # Note, for the Grove 80cm version of this sensor, due to the way it is wired, 28 # you need to plug this into the A0 port, where it will use the available 29 # A1 pin for data. 30 # Instantiate a GP2Y0A on analog pin A1 31 myIRProximity = upmGp2y0a.GP2Y0A(1) 32 33 34 ## Exit handlers ## 35 # This stops python from printing a stacktrace when you hit control-C 36 def SIGINTHandler(signum, frame): 37 raise SystemExit 38 39 # This lets you run code on exit, 40 # including functions from myIRProximity 41 def exitHandler(): 42 print "Exiting" 43 sys.exit(0) 44 45 # Register exit handlers 46 atexit.register(exitHandler) 47 signal.signal(signal.SIGINT, SIGINTHandler) 48 49 50 # analog voltage, usually 3.3 or 5.0 51 GP2Y0A_AREF = 5.0; 52 SAMPLES_PER_QUERY = 20; 53 54 # The higher the voltage (closer to AREF) the closer the object is. 55 # NOTE: The measured voltage will probably not exceed 3.3 volts. 56 # Every second, print the averaged voltage value 57 # (averaged over 20 samples). 58 while (1): 59 print "AREF: {0}, Voltage value (higher means closer): {1}".format( 60 GP2Y0A_AREF, 61 myIRProximity.value(GP2Y0A_AREF, SAMPLES_PER_QUERY)) 62 time.sleep(1) 63
