grovevdiv: python example and js modification for grovevdiv voltage divider

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

examples/javascript/grovevdiv.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.
@@ -31,11 +30,12 @@ var myVoltageDivider = new voltageDivider.GroveVDiv(0);
 
 // collect data and output measured voltage according to the setting
 // of the scaling switch (3 or 10)
+var val, gain3val, gain10val;
 function getVoltageInfo()
 {
-	var val = myVoltageDivider.value(100);
+	val = myVoltageDivider.value(100);
-	var gain3val = myVoltageDivider.computedValue(3, val);
+	gain3val = myVoltageDivider.computedValue(3, val);
-	var gain10val = myVoltageDivider.computedValue(10, val);
+	gain10val = myVoltageDivider.computedValue(10, val);
 	console.log("ADC value: " + val + " Gain 3: " + gain3val 
 				+ "v Gain 10: " + gain10val + "v");
 }
@@ -45,6 +45,9 @@ setInterval(getVoltageInfo, 1000);
 // Print message when exiting
 process.on('SIGINT', function()
 {
+	myVoltageDivider = null;
+	voltageDivider.cleanUp();
+	voltageDivider = null;
 	console.log("Exiting...");
 	process.exit(0);
 });

examples/python/grovevdiv.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_grovevdiv as upmGrovevdiv
+
+# Instantiate a Grove Voltage Divider sensor on analog pin A0
+myVoltageDivider = upmGrovevdiv.GroveVDiv(0)
+
+
+## Exit handlers ##
+# This stops python from printing a stacktrace when you hit control-C
+def SIGINTHandler(signum, frame):
+	raise SystemExit
+
+# This function lets you run code on exit,
+# including functions from myVoltageDivider
+def exitHandler():
+	print "Exiting"
+	sys.exit(0)
+
+# Register exit handlers
+atexit.register(exitHandler)
+signal.signal(signal.SIGINT, SIGINTHandler)
+
+
+while(1):
+	val = myVoltageDivider.value(100)
+	gain3val = myVoltageDivider.computedValue(3, val)
+	gain10val = myVoltageDivider.computedValue(10, val)
+	print "ADC value: {0} Gain 3: {1}v Gain 10: {2}v".format(
+	val,  gain3val, gain10val)
+
+	time.sleep(1)