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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_ht9170 as upmHt9170
     26 
     27 # Instantiate a DTMF decoder
     28 myDTMF = upmHt9170.HT9170(12, 11, 10, 9, 8)
     29 
     30 ## Exit handlers ##
     31 # This stops python from printing a stacktrace when you hit control-C
     32 def SIGINTHandler(signum, frame):
     33 	raise SystemExit
     34 
     35 # This lets you run code on exit, including functions from myDTMF
     36 def exitHandler():
     37 	print "Exiting"
     38 	sys.exit(0)
     39 
     40 # Register exit handlers
     41 atexit.register(exitHandler)
     42 signal.signal(signal.SIGINT, SIGINTHandler)
     43 
     44 
     45 # Now we just spin in a loop, sleeping every 100ms, checking to see
     46 # if a digit is available.  If so, we decode and print the digit,
     47 # and continue looping.
     48 while (1):
     49 	if (dtmf_obj.digitReady()):
     50 		print "Got DTMF code:", dtmf_obj.decodeDigit()
     51 		# now spin until digitReady() goes false again
     52 		while (dtmf.digitReady()):
     53 			pass
     54 	time.sleep(.1)
     55