hx711: Initial implementation HX711 24bit ADC module

Signed-off-by: Rafael Neri <rafael.neri@gmail.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/javascript/hx711.js

@@ -0,0 +1,36 @@
+/*
+*
+* Author: Rafael da Mata Neri <rafael.neri@gmail.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.
+*/
+
+var hx711 = require('jsupm_hx711');
+// Instantiate a HX711 data on digital pin D3 and clock on digital pin D2
+var scale = new hx711.HX711(3, 2);
+
+setTimeout(function(){
+	// 2837: value obtained via calibration
+	scale.setScale(2837);
+	scale.tare(2);
+	setInterval(function(){
+		console.log(scale.getUnits());
+	}, 1000);
+}, 1000);