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/*
* Author: Brendan Le Foll
* 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 <unistd.h>
#include "mraa.h"
static volatile int counter = 0;
static volatile int oldcounter = 0;
void
interrupt(void* args)
{
++counter;
}
int
main()
{
mraa_init();
mraa_gpio_context x;
x = mraa_gpio_init(6);
if (x == NULL) {
return 1;
}
mraa_gpio_dir(x, MRAA_GPIO_IN);
mraa_gpio_edge_t edge = MRAA_GPIO_EDGE_BOTH;
mraa_gpio_isr(x, edge, &interrupt, NULL);
for (;;) {
if (counter != oldcounter) {
fprintf(stdout, "timeout counter == %d\n", counter);
oldcounter = counter;
}
// got to relieve our poor CPU!
sleep(1);
}
mraa_gpio_close(x);
return MRAA_SUCCESS;
}
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