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gp2y0a: renamed from gp2y0a21yk to indicate support for the gp2y0a family

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Additionally, add some error checking in the constructor, and determine
the ADC resolution and use that in the voltage calculation rather than
a hardcoded 1024.0.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Zion Orent <zorent@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
This commit is contained in:
Jon Trulson
2015-04-02 11:03:29 -06:00
committed by Mihai Tudor Panu
parent 828d3b928e
commit 77be6adf6d
12 changed files with 154 additions and 67 deletions
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26
examples/javascript/gp2y0a21yk.js → examples/javascript/gp2y0a.js
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@ -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.
@ -24,33 +23,38 @@
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
// JavaScript file for GP2Y0A21YK 80cm IR Proximity Sensor
// JavaScript file for GP2Y0A family of IR Proximity Sensors
// analog voltage, usually 3.3 or 5.0
var GP2Y0A21YK_AREF = 5.0;
var GP2Y0A_AREF = 5.0;
var SAMPLES_PER_QUERY = 20;
var IRProximity = require('jsupm_gp2y0a21yk');
var IRProximity = require('jsupm_gp2y0a');
// Note, for the Grove version of this sensor, due to the way it is wired,
// Note, for the Grove 80cm version of this sensor, due to the way it is wired,
// you need to plug this into the A0 port, where it will use the available
// A1 pin for data.
// Instantiate a GP2Y0A21YK on analog pin A1
var myVolts = new IRProximity.GP2Y0A21YK(1);
// Instantiate a GP2Y0A on analog pin A1
var myVolts = new IRProximity.GP2Y0A(1);
// The higher the voltage (closer to AREF) the closer the object is.
// NOTE: The measured voltage will probably not exceed 3.3 volts.
// Every second, print the averaged voltage value (averaged over 20 samples).
setInterval(function()
// Every second, print the averaged voltage value
// (averaged over 20 samples).
var myInterval = setInterval(function()
{
console.log("AREF: " + GP2Y0A21YK_AREF +
console.log("AREF: " + GP2Y0A_AREF +
", Voltage value (higher means closer): " +
myVolts.value(GP2Y0A21YK_AREF, SAMPLES_PER_QUERY));
myVolts.value(GP2Y0A_AREF, SAMPLES_PER_QUERY));
}, 1000);
// Print message when exiting
process.on('SIGINT', function()
{
clearInterval(myInterval);
myVolts = null;
IRProximity.cleanUp();
IRProximity = null;
console.log("Exiting...");
process.exit(0);
});