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84 lines
2.7 KiB
JavaScript
84 lines
2.7 KiB
JavaScript
/*
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* Author: Zion Orent <zorent@ics.com>
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* Copyright (c) 2015 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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function exit()
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{
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console.log("Exiting");
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if (myLEDController_obj)
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{
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// clear the bits we set earlier
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myLEDController_obj.ledFullOff(3, false);
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myLEDController_obj.ledFullOn(4, false);
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}
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myLEDController_obj = null;
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if (LEDController_lib)
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{
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LEDController_lib.cleanUp();
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LEDController_lib = null;
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}
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process.exit(0);
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}
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// The pca9685 is an led controller.
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// It's being used in this case to drive motors.
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var LEDController_lib = require('jsupm_pca9685');
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var I2CBus = LEDController_lib.PCA9685_I2C_BUS;
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var I2CAddr = LEDController_lib.PCA9685_DEFAULT_I2C_ADDR;
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// Instantiate an PCA9685 on I2C bus 0
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var myLEDController_obj = new LEDController_lib.PCA9685(I2CBus, I2CAddr);
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// put device to sleep
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myLEDController_obj.setModeSleep(true);
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// setup a period of 50Hz
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myLEDController_obj.setPrescaleFromHz(50);
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// wake device up
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myLEDController_obj.setModeSleep(false);
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// Setup a 50% duty cycle -- on time at 0, off time at 2048 (4096 / 2)
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// Set for all channels
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var LEDNum = LEDController_lib.PCA9685_ALL_LED;
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myLEDController_obj.ledOnTime(LEDNum, 0);
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myLEDController_obj.ledOffTime(LEDNum, 2048);
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// but, turn channel 3 full off and channel 4 full on
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console.log("Turning channel 3 off, and channel 4 on.");
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console.log("All other channels will be PWM'd at a 50% duty cycle.");
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myLEDController_obj.ledFullOff(3, true);
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myLEDController_obj.ledFullOn(4, true);
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// now, just sleep for 5 seconds, reset channels 3 and 4, and exit.
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console.log("Sleeping for 5 seconds...");
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setTimeout(exit, 5000);
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process.on('SIGINT', function()
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{
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exit();
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});
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