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_ht9170 as upmHt9170
26
27# Instantiate a DTMF decoder
28myDTMF = upmHt9170.HT9170(12, 11, 10, 9, 8)
29
30## Exit handlers ##
31# This stops python from printing a stacktrace when you hit control-C
32def SIGINTHandler(signum, frame):
33	raise SystemExit
34
35# This lets you run code on exit, including functions from myDTMF
36def exitHandler():
37	print "Exiting"
38	sys.exit(0)
39
40# Register exit handlers
41atexit.register(exitHandler)
42signal.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.
48while (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