mraablinksplit

blink-io.cpp

/*
 * Author: Brendan Le Foll <[email protected]>
 * Author: Thomas Ingleby <[email protected]>
 * Copyright (c) 2014 Intel Corporation.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdlib.h>
#include <unistd.h>
#include "utils.hpp"

#include "mraa.hpp"

static int iopin;
int running = 0;

void
sig_handler(int signo)
{
    if (signo == SIGINT) {
        printf("closing IO%d nicely\n", iopin);
        running = -1;
    }
}
int main (int argc, char **argv)
{
    if (argc < 2) {
        printf("Provide an int arg if you want to flash on something other than %d\n", DEFAULT_IOPIN);
        iopin = DEFAULT_IOPIN;
    } else {
        iopin = strtol(argv[1], NULL, 10);
    }

    signal(SIGINT, sig_handler);

//! [Interesting]
    mraa::Gpio* gpio = new mraa::Gpio(iopin);
    if (gpio == NULL) {
        return MRAA_ERROR_UNSPECIFIED;
    }
    mraa_result_t response = gpio->dir(mraa::DIR_OUT);
    if (response != MRAA_SUCCESS) {
        mraa::printError(response);
        return 1;
    }

    while (running == 0) {
        response = SetIOPinVal(gpio, 1);
        sleep(1);
        response = SetIOPinVal(gpio, 0);
        sleep(1);
    }
    delete gpio;
    return response;
//! [Interesting]
}

utils.hpp

/*
 * Author: Brendan Le Foll <[email protected]>
 * Copyright (c) 2014 Intel Corporation.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <signal.h>    
#include <stdio.h>
#include <stdlib.h>
#include <stdlib.h>
#include <unistd.h>

#include "mraa.hpp"
#define DEFAULT_IOPIN 13
#define DEFAULT_IOPIN2 2

mraa_result_t  SetIOPinVal(mraa::Gpio* gpio, int iVal) {
    return gpio->write(iVal);
}