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      1 /*jslint node:true, vars:true, bitwise:true, unparam:true */
      2 /*jshint unused:true */
      3 /*
      4 * Author: Zion Orent <zorent (at) ics.com>
      5 * Copyright (c) 2015 Intel Corporation.
      6 *
      7 * Permission is hereby granted, free of charge, to any person obtaining
      8 * a copy of this software and associated documentation files (the
      9 * "Software"), to deal in the Software without restriction, including
     10 * without limitation the rights to use, copy, modify, merge, publish,
     11 * distribute, sublicense, and/or sell copies of the Software, and to
     12 * permit persons to whom the Software is furnished to do so, subject to
     13 * the following conditions:
     14 *
     15 * The above copyright notice and this permission notice shall be
     16 * included in all copies or substantial portions of the Software.
     17 *
     18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25 */
     26 
     27 /* functions */
     28 function printButtons(touchObj)
     29 {
     30 	var buttonPressed = false;
     31 	var buttons = touchObj.getButtons();
     32 
     33 	process.stdout.write("Buttons Pressed: ");
     34 	for (var i=0; i<7; i++)
     35 	{
     36 		if (buttons & (1 << i))
     37 		{
     38 			process.stdout.write(i + " ");
     39 			buttonPressed = true;
     40 		}
     41 	}
     42 
     43 	if (!buttonPressed)
     44 		process.stdout.write("None");
     45 
     46 	console.log(" ");
     47 
     48 	if (touchObj.isCalibrating())
     49 		console.log("Calibration is occurring.");
     50 
     51 	if (touchObj.isOverflowed())
     52 		console.log("Overflow was detected.");
     53 }
     54 
     55 
     56 /* Global code that runs on startup */
     57 
     58 var touchSensor_lib = require('jsupm_at42qt1070');
     59 
     60 var I2C_BUS = touchSensor_lib.AT42QT1070_I2C_BUS;
     61 var DEFAULT_I2C_ADDR = touchSensor_lib.AT42QT1070_DEFAULT_I2C_ADDR;
     62 // Instantiate an AT42QT1070 on I2C bus 0
     63 var mytouchSensor_obj = new touchSensor_lib.AT42QT1070(I2C_BUS,
     64                                                DEFAULT_I2C_ADDR);
     65 
     66 var myInterval = setInterval(function()
     67 {
     68 	mytouchSensor_obj.updateState();
     69 	printButtons(mytouchSensor_obj);
     70 }, 100);
     71 
     72 // Print message when exiting and clear interval/memory
     73 process.on('SIGINT', function()
     74 {
     75 	clearInterval(myInterval);
     76 	mytouchSensor_obj = null;
     77 	touchSensor_lib.cleanUp();
     78 	touchSensor_lib = null;
     79 	console.log("Exiting");
     80 	process.exit(0);
     81 });
     82