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grovemd: Initial implementation

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This module implements support for the Grove I2C Motor Driver.

The device *requires* a 100Khz I2C bus speed.  It will not work on
anything faster.

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
2015-01-23 16:30:22 -07:00
committed by Mihai Tudor Panu
parent de66c8de56
commit d380658b40
8 changed files with 492 additions and 0 deletions
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examples/javascript/grovemd.js Normal file
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/*jslint node:true, vars:true, bitwise:true, unparam:true */
/*jshint unused:true */
/*
* 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.
*/
var groveMotorDriver_lib = require('jsupm_grovemd');
function start()
{
if (my_MotorDriver_obj)
{
// set direction to CW and set speed to 50%
console.log("Spin M1 and M2 at half speed for 3 seconds");
my_MotorDriver_obj.setDirection(groveMotorDriver_lib.GroveMD.DIR_CW);
my_MotorDriver_obj.setMotorSpeeds(127, 127);
}
}
function reverse()
{
if (my_MotorDriver_obj)
{
// counter clockwise
console.log("Reversing M1 and M2 for 3 seconds");
my_MotorDriver_obj.setDirection(groveMotorDriver_lib.GroveMD.DIR_CCW);
}
}
function end()
{
if (my_MotorDriver_obj)
{
console.log("Stopping motors");
my_MotorDriver_obj.setMotorSpeeds(0, 0);
}
exit();
}
// When exiting: clear memory and print exit message
function exit()
{
if (my_MotorDriver_obj)
{
my_MotorDriver_obj = null;
groveMotorDriver_lib.cleanUp();
}
groveMotorDriver_lib = null;
console.log("Exiting");
process.exit(0);
}
// Instantiate an I2C Grove Motor Driver on I2C bus 0
var my_MotorDriver_obj = new groveMotorDriver_lib.GroveMD(
groveMotorDriver_lib.GROVEMD_I2C_BUS,
groveMotorDriver_lib.GROVEMD_DEFAULT_I2C_ADDR);
start();
setTimeout(function()
{
reverse();
setTimeout(end, 3000);
}, 3000);
process.on('SIGINT', function()
{
exit();
});