ta12200: python example and JS modification for ta12200 electricity sensor

Signed-off-by: Zion Orent <zorent@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/javascript/ta12200.js

@@ -1,6 +1,5 @@
 /*jslint node:true, vars:true, bitwise:true, unparam:true */
 /*jshint unused:true */
-/*global */
 /*
 * Author: Zion Orent <zorent@ics.com>
 * Copyright (c) 2014 Intel Corporation.
@@ -29,19 +28,24 @@ var electricitySensor = require('jsupm_ta12200');
 // Instantiate a TA12-200 sensor on analog pin A0
 var myElectricitySensor = new electricitySensor.TA12200(0);
 
-function getElectricityInfo()
+var maxVal, current;
+var myInterval = setInterval(function()
 {
-	var maxVal = myElectricitySensor.highestValue();
-	var current = myElectricitySensor.milliAmps(maxVal);
+	maxVal = myElectricitySensor.highestValue();
+	current = myElectricitySensor.milliAmps(maxVal);
 
-	console.log("Max ADC Value: " + maxVal + ", current: " + current + "mA");
-}
-
-setInterval(getElectricityInfo, 100);
+	outputStr = "Max ADC Value: " + maxVal +
+	", current: " + current + "mA";
+	console.log(outputStr);
+}, 100);
 
 // Print message when exiting
 process.on('SIGINT', function()
 {
+	clearInterval(myInterval);
+	myElectricitySensor = null;
+	electricitySensor.cleanUp();
+	electricitySensor = null;
 	console.log("Exiting...");
 	process.exit(0);
 });

examples/python/ta12200.py

@@ -0,0 +1,54 @@
+#!/usr/bin/python
+# Author: Zion Orent <zorent@ics.com>
+# Copyright (c) 2015 Intel Corporation.
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+import time, sys, signal, atexit
+import pyupm_ta12200 as upmTa12200
+
+# Instantiate a TA12-200 sensor on analog pin A0
+myElectricitySensor = upmTa12200.TA12200(0)
+
+
+## Exit handlers ##
+# This stops python from printing a stacktrace when you hit control-C
+def SIGINTHandler(signum, frame):
+	raise SystemExit
+
+# This lets you run code on exit,
+# including functions from myElectricitySensor
+def exitHandler():
+	print "Exiting"
+	sys.exit(0)
+
+# Register exit handlers
+atexit.register(exitHandler)
+signal.signal(signal.SIGINT, SIGINTHandler)
+
+
+# get the data every 50 milliseconds
+while(1):
+	maxVal = myElectricitySensor.highestValue()
+	current = myElectricitySensor.milliAmps(maxVal)
+
+	outputStr = "Max ADC Value: %s, current: %smA" % (maxVal, current)
+	print outputStr
+	time.sleep(.1)