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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/blink_onboard.c
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@@ -1,5 +1,6 @@
/*
* Author: Brendan Le Foll <brendan.le.foll@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
@@ -25,9 +26,21 @@
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include "mraa/gpio.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)
{
@@ -35,6 +48,7 @@ main(int argc, char** argv)
mraa_gpio_context gpio, gpio_in = NULL;
const char* board_name = mraa_get_platform_name();
int ledstate = 0;
mraa_result_t r = MRAA_SUCCESS;
switch (platform) {
case MRAA_INTEL_GALILEO_GEN1:
@@ -53,7 +67,7 @@ main(int argc, char** argv)
gpio = mraa_gpio_init(13);
}
fprintf(stdout, "Welcome to libmraa\n Version: %s\n Running on %s\n", mraa_get_version(), board_name);
fprintf(stdout, "Welcome to libmraa\n Version: %s\n Running on %s (Ctrl+C to exit)\n", mraa_get_version(), board_name);
if (gpio == NULL) {
@@ -73,8 +87,11 @@ main(int argc, char** argv)
mraa_gpio_dir(gpio, MRAA_GPIO_OUT);
for (;;) {
signal(SIGINT, sig_handler);
while (running == 0) {
if (gpio_in != NULL && mraa_gpio_read(gpio_in) == 0) {
mraa_gpio_close(gpio_in);
return 0;
}
ledstate = !ledstate;
@@ -82,5 +99,10 @@ main(int argc, char** argv)
sleep(1);
}
return 0;
r = mraa_gpio_close(gpio);
if (r != MRAA_SUCCESS) {
mraa_result_print(r);
}
return r;
}