79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
//
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// GrovePi Example for using the Grove LED for LED Fade effect (http://www.seeedstudio.com/wiki/Grove_-_LED_Socket_Kit)
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//
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// The GrovePi connects the Raspberry Pi and Grove sensors. You can learn more about GrovePi here: http://www.dexterindustries.com/GrovePi
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//
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// Have a question about this example? Ask on the forums here: http://forum.dexterindustries.com/c/grovepi
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//
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/*
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## License
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The MIT License (MIT)
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GrovePi for the Raspberry Pi: an open source platform for connecting Grove Sensors to the Raspberry Pi.
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Copyright (C) 2017 Dexter Industries
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include "grovepi.h"
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using namespace GrovePi;
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// sudo g++ -Wall grovepi.cpp grove_led_fade.cpp -o grove_led_fade.out -> without grovepicpp package installed
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// sudo g++ -Wall -lgrovepicpp grove_led_fade.cpp -o grove_led_fade.out -> with grovepicpp package installed
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int main()
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{
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int LED_pin = 5; // Grove LED is connected to digital port D5 on the GrovePi
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int brigthness = 0; // initial brigthness of 0 (0 to 255)
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try
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{
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initGrovePi();
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pinMode(LED_pin, OUTPUT); // set the LED pin as OUTPUT
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delay(1000); // and wait a second
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// do indefinitely
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while(true)
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{
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// reset if above 255
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// the GrovePi has 8-bit DAC
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if(brigthness > 255)
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brigthness = 0;
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// and set the LED brigthness
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analogWrite(LED_pin, brigthness);
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float percentage_brightness = 100 * float(brigthness) / 255;
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printf("[pin %d][led brigthness = %.2f%%]\n", LED_pin, percentage_brightness);
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// increment brigthness for next iteration
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brigthness += 10;
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delay(50);
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}
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}
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catch(I2CError &error)
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{
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printf(error.detail());
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return -1;
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}
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return 0;
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}
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