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h3lis331dl: Initial implementation

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The driver implements support for the Grove 3-Axis Digital
Accelerometer(±400g), using the h3lis331dl chip.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
This commit is contained in:
Jon Trulson
2015-04-24 18:53:54 -06:00
committed by Mihai Tudor Panu
parent 5547d99609
commit c8d0aee873
9 changed files with 1468 additions and 0 deletions
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examples/javascript/h3lis331dl.js Normal file
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/*jslint node:true, vars:true, bitwise:true, unparam:true */
/*jshint unused:true */
/*
* Author: Jon Trulson <jtrulson@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.
*/
var digitalAccelerometer = require('jsupm_h3lis331dl');
// Instantiate an H3LIS331DL on I2C bus 0
var myDigitalAccelerometer = new digitalAccelerometer.H3LIS331DL(
digitalAccelerometer.H3LIS331DL_I2C_BUS,
digitalAccelerometer.H3LIS331DL_DEFAULT_I2C_ADDR);
// Initialize the device with default values
myDigitalAccelerometer.init();
var x, y, z;
x = digitalAccelerometer.new_intp();
y = digitalAccelerometer.new_intp();
z = digitalAccelerometer.new_intp();
var ax, ay, az;
ax = digitalAccelerometer.new_floatp();
ay = digitalAccelerometer.new_floatp();
az = digitalAccelerometer.new_floatp();
var outputStr;
var myInterval = setInterval(function()
{
myDigitalAccelerometer.update();
myDigitalAccelerometer.getRawXYZ(x, y, z);
outputStr = "Raw: X = " + digitalAccelerometer.intp_value(x) +
" Y = " + digitalAccelerometer.intp_value(y) +
" Z = " + digitalAccelerometer.intp_value(z);
console.log(outputStr);
myDigitalAccelerometer.getAcceleration(ax, ay, az);
outputStr = "Acceleration: AX = "
+ roundNum(digitalAccelerometer.floatp_value(ax), 6)
+ " AY = " + roundNum(digitalAccelerometer.floatp_value(ay), 6)
+ " AZ = " + roundNum(digitalAccelerometer.floatp_value(az), 6);
console.log(outputStr);
}, 500);
// round off output to match C example, which has 6 decimal places
function roundNum(num, decimalPlaces)
{
var extraNum = (1 / (Math.pow(10, decimalPlaces) * 1000));
return (Math.round((num + extraNum)
* (Math.pow(10, decimalPlaces))) / Math.pow(10, decimalPlaces));
}
// When exiting: clear interval and print message
process.on('SIGINT', function()
{
clearInterval(myInterval);
// clean up memory
digitalAccelerometer.delete_intp(x);
digitalAccelerometer.delete_intp(y);
digitalAccelerometer.delete_intp(z);
digitalAccelerometer.delete_floatp(ax);
digitalAccelerometer.delete_floatp(ay);
digitalAccelerometer.delete_floatp(az);
console.log("Exiting...");
process.exit(0);
});