74 lines
2.8 KiB
Java
74 lines
2.8 KiB
Java
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/*
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* Author: Brendan Le Foll <brendan.le.foll@intel.com>
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* Author: Petre Eftime <petre.p.eftime@intel.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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//! [Interesting]
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import mraa.Dir;
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import mraa.Gpio;
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import mraa.IntelEdison;
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import mraa.mraa;
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import mraa.Platform;
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import mraa.Result;
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public class HelloEdison {
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static {
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try {
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System.loadLibrary("mraajava");
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} catch (UnsatisfiedLinkError e) {
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System.err.println(
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"Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" +
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e);
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System.exit(1);
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}
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}
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public static void main(String argv[]) {
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Platform platform = mraa.getPlatformType();
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if (platform != Platform.INTEL_EDISON_FAB_C) {
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System.err.println("Error: This program can only be run on edison");
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System.exit(Result.ERROR_INVALID_PLATFORM.swigValue());
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}
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/*
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* MRAA_INTEL_EDISON_GP182 == 0, so this will initialise pin0 on arduino,
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* which is hardware GPIO 130 and not 182
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* We set the owner to false here, this makes sure that we do not close the
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* gpio from sysfs in mraa_gpio_close meaning it will stay as an output and
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* we will not always transition from 0->1 as gpio182 as output has the
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* default position of '0'. Note that the value could change as a result of
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* a mraa_gpio_dir however meaning we always go from 0->1 or 1->0
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*/
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Gpio gpio182 = new Gpio(IntelEdison.INTEL_EDISON_GP182.swigValue(), false);
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gpio182.dir(Dir.DIR_OUT);
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int val = gpio182.read();
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System.out.println(String.format("GPIO%d (mraa pin %d) was: %d, will set to %d\n", 182,
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gpio182.getPin(), val, val == 0 ? 1 : 0));
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gpio182.write(val == 0 ? 1 : 0);
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};
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}
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//! [Interesting]
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