mirror of
https://github.com/eclipse/upm.git
synced 2025-03-24 09:20:39 +03:00
71 lines
1.8 KiB
JavaScript
71 lines
1.8 KiB
JavaScript
/*
|
|
* Author: Zion Orent <zorent@ics.com>
|
|
* Copyright (c) 2015 Intel Corporation.
|
|
*
|
|
* This program and the accompanying materials are made available under the
|
|
* terms of the The MIT License which is available at
|
|
* https://opensource.org/licenses/MIT.
|
|
*
|
|
* SPDX-License-Identifier: MIT
|
|
*/
|
|
|
|
function exit()
|
|
{
|
|
console.log("Exiting");
|
|
|
|
if (myLEDController_obj)
|
|
{
|
|
// clear the bits we set earlier
|
|
myLEDController_obj.ledFullOff(3, false);
|
|
myLEDController_obj.ledFullOn(4, false);
|
|
}
|
|
myLEDController_obj = null;
|
|
if (LEDController_lib)
|
|
{
|
|
LEDController_lib.cleanUp();
|
|
LEDController_lib = null;
|
|
}
|
|
process.exit(0);
|
|
}
|
|
|
|
// The pca9685 is an led controller.
|
|
// It's being used in this case to drive motors.
|
|
var LEDController_lib = require('jsupm_pca9685');
|
|
|
|
var I2CBus = LEDController_lib.PCA9685_I2C_BUS;
|
|
var I2CAddr = LEDController_lib.PCA9685_DEFAULT_I2C_ADDR;
|
|
// Instantiate an PCA9685 on I2C bus 0
|
|
var myLEDController_obj = new LEDController_lib.PCA9685(I2CBus, I2CAddr);
|
|
|
|
// put device to sleep
|
|
myLEDController_obj.setModeSleep(true);
|
|
|
|
// setup a period of 50Hz
|
|
myLEDController_obj.setPrescaleFromHz(50);
|
|
|
|
// wake device up
|
|
myLEDController_obj.setModeSleep(false);
|
|
|
|
// Setup a 50% duty cycle -- on time at 0, off time at 2048 (4096 / 2)
|
|
// Set for all channels
|
|
var LEDNum = LEDController_lib.PCA9685_ALL_LED;
|
|
myLEDController_obj.ledOnTime(LEDNum, 0);
|
|
myLEDController_obj.ledOffTime(LEDNum, 2048);
|
|
|
|
// but, turn channel 3 full off and channel 4 full on
|
|
console.log("Turning channel 3 off, and channel 4 on.");
|
|
console.log("All other channels will be PWM'd at a 50% duty cycle.");
|
|
|
|
myLEDController_obj.ledFullOff(3, true);
|
|
myLEDController_obj.ledFullOn(4, true);
|
|
|
|
// now, just sleep for 5 seconds, reset channels 3 and 4, and exit.
|
|
console.log("Sleeping for 5 seconds...");
|
|
|
|
setTimeout(exit, 5000);
|
|
|
|
process.on('SIGINT', function()
|
|
{
|
|
exit();
|
|
});
|