1 #!/usr/bin/python 2 # Author: Jon Trulson <jtrulson (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_ad8232 as upmAD8232 26 27 # Instantiate a AD8232 sensor on digital pins 10 (LO+), 11 (LO-) 28 # and an analog pin, 0 (OUTPUT) 29 myAD8232 = upmAD8232.AD8232(10, 11, 0) 30 31 32 ## Exit handlers ## 33 # This function stops python from printing a stacktrace when you hit control-C 34 def SIGINTHandler(signum, frame): 35 raise SystemExit 36 37 # This function lets you run code on exit, including functions from myAD8232 38 def exitHandler(): 39 print "Exiting" 40 sys.exit(0) 41 42 # Register exit handlers 43 atexit.register(exitHandler) 44 signal.signal(signal.SIGINT, SIGINTHandler) 45 46 47 # Output the raw numbers from the ADC, for plotting elsewhere. 48 # A return of 0 indicates a Lead Off (LO) condition. 49 # In theory, this data could be fed to software like Processing 50 # (https://www.processing.org/) to plot the data just like an 51 # EKG you would see in a hospital. 52 while(1): 53 print myAD8232.value() 54 time.sleep(.001) 55
