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examples: make main loops finite to ensure proper cleanup

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Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Alex Tereschenko
2017-06-05 18:22:29 +02:00
committed by Brendan Le Foll
parent 32340f6819
commit c36e4add5a
15 changed files with 112 additions and 28 deletions
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28
examples/gpio_read6.c
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@@ -1,5 +1,6 @@
/*
* Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
* Contributors: Alex Tereschenko <alext.mkrs@gmail.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
@@ -24,14 +25,28 @@
#include "stdio.h"
#include "unistd.h"
#include <signal.h>
#include "mraa.h"
int running = 0;
void
sig_handler(int signo)
{
if (signo == SIGINT) {
printf("closing down nicely\n");
running = -1;
}
}
int
main(int argc, char** argv)
{
mraa_result_t r = MRAA_SUCCESS;
mraa_init();
fprintf(stdout, "MRAA Version: %s\nStarting Read on IO6\n", mraa_get_version());
fprintf(stdout, "MRAA Version: %s\nStarting Read on IO6 (Ctrl+C to exit)\n", mraa_get_version());
//! [Interesting]
mraa_gpio_context gpio;
@@ -40,13 +55,18 @@ main(int argc, char** argv)
mraa_gpio_dir(gpio, MRAA_GPIO_IN);
for (;;) {
signal(SIGINT, sig_handler);
while (running == 0) {
fprintf(stdout, "Gpio is %d\n", mraa_gpio_read(gpio));
sleep(1);
}
mraa_gpio_close(gpio);
r = mraa_gpio_close(gpio);
//! [Interesting]
if (r != MRAA_SUCCESS) {
mraa_result_print(r);
}
return 0;
return r;
}