70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
// GrovePi Example for using the digital read command
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// http://dexterindustries.com/grovepi
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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 grovepi_digital_read.cpp -o grovepi_digital_read.out -> without grovepicpp package installed
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// sudo g++ -Wall -lgrovepicpp grovepi_digital_read.cpp -o grovepi_digital_read.out -> with grovepicpp package installed
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int main()
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{
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int pin = 4; // use port D4
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int state; // variable to hold the ON/OFF state
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try
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{
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initGrovePi(); // initialize communication w/ GrovePi
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pinMode(pin, INPUT); // set the pin for reading
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// continuously read the data
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while(true)
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{
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// read the data
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state = digitalRead(pin);
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printf("[pin %d][digital read = ", pin);
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if(state == 0)
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printf("LOW]\n");
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else
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printf("HIGH]\n");
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// wait 50 ms so that the program doesn't run too fast
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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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