1#!/usr/bin/python 2# Author: Zion Orent <zorent@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_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 31myIRProximity = upmGp2y0a.GP2Y0A(1) 32 33 34## Exit handlers ## 35# This stops python from printing a stacktrace when you hit control-C 36def SIGINTHandler(signum, frame): 37 raise SystemExit 38 39# This lets you run code on exit, 40# including functions from myIRProximity 41def exitHandler(): 42 print "Exiting" 43 sys.exit(0) 44 45# Register exit handlers 46atexit.register(exitHandler) 47signal.signal(signal.SIGINT, SIGINTHandler) 48 49 50# analog voltage, usually 3.3 or 5.0 51GP2Y0A_AREF = 5.0; 52SAMPLES_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). 58while (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