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_mpr121 as upmMpr121 26 27I2C_BUS = upmMpr121.MPR121_I2C_BUS 28DEFAULT_I2C_ADDR = upmMpr121.MPR121_DEFAULT_I2C_ADDR 29 30# Instantiate an MPR121 touch sensor on I2C 31myTouchSensor = upmMpr121.MPR121(I2C_BUS, DEFAULT_I2C_ADDR) 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 function lets you run code on exit, 40# including functions from myTouchSensor 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 51def printButtons(touchSensor): 52 buttonPressed = False 53 54 outputStr = "Buttons Pressed: " 55 for i in range(12): 56 if (touchSensor.m_buttonStates & (1 << i)): 57 outputStr += (str(i) + " ") 58 buttonPressed = True 59 60 if (not buttonPressed): 61 outputStr += "None" 62 63 print outputStr 64 65 if (touchSensor.m_overCurrentFault): 66 print "Over Current Fault detected!" 67 68 69while(1): 70 myTouchSensor.readButtons() 71 printButtons(myTouchSensor) 72 73 time.sleep(1) 74