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      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_at42qt1070 as upmAt42qt1070
     26 
     27 # functions
     28 def printButtons(touchObj):
     29 	buttonPressed = False
     30 	buttons = touchObj.getButtons()
     31 
     32 	sys.stdout.write("Buttons Pressed: ")
     33 	for i in range(7):
     34 		if (buttons & (1 << i)):
     35 			sys.stdout.write(str(i) + " ")
     36 			buttonPressed = True
     37 
     38 	if (not buttonPressed):
     39 		sys.stdout.write("None")
     40 
     41 	print " "
     42 
     43 	if (touchObj.isCalibrating()):
     44 		print "Calibration is occurring."
     45 
     46 	if (touchObj.isOverflowed()):
     47 		print "Overflow was detected."
     48 
     49 
     50 # Global code that runs on startup
     51 
     52 I2C_BUS = upmAt42qt1070.AT42QT1070_I2C_BUS
     53 DEFAULT_I2C_ADDR = upmAt42qt1070.AT42QT1070_DEFAULT_I2C_ADDR
     54 
     55 # Instantiate an AT42QT1070 on I2C bus 0
     56 myTouchSensor = upmAt42qt1070.AT42QT1070(I2C_BUS,
     57                                          DEFAULT_I2C_ADDR)
     58 
     59 
     60 # Exit handlers
     61 def SIGINTHandler(signum, frame):
     62 	raise SystemExit
     63 
     64 def exitHandler():
     65 	print "Exiting"
     66 	sys.exit(0)
     67 
     68 
     69 # This function lets you run code on exit, including functions from myTouchSensor
     70 atexit.register(exitHandler)
     71 # This function stops python from printing a stacktrace when you hit control-C
     72 signal.signal(signal.SIGINT, SIGINTHandler)
     73 
     74 
     75 # Print the button being touched every 0.1 seconds
     76 while(1):
     77 	myTouchSensor.updateState()
     78 	printButtons(myTouchSensor)
     79 	time.sleep(.1)
     80