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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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30
examples/analogin_a0.c
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@@ -1,5 +1,6 @@
/*
* Author: Nandkishor Sonar
* Contributors: Alex Tereschenko <alext.mkrs@gmail.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
@@ -23,30 +24,49 @@
*/
#include <unistd.h>
//! [Interesting]
#include <signal.h>
#include "mraa/aio.h"
int running = 0;
void
sig_handler(int signo)
{
if (signo == SIGINT) {
printf("closing down nicely\n");
running = -1;
}
}
//! [Interesting]
int
main()
{
mraa_aio_context adc_a0;
uint16_t adc_value = 0;
float adc_value_float = 0.0;
mraa_result_t r = MRAA_SUCCESS;
adc_a0 = mraa_aio_init(0);
if (adc_a0 == NULL) {
return 1;
}
for (;;) {
signal(SIGINT, sig_handler);
while (running == 0) {
adc_value = mraa_aio_read(adc_a0);
adc_value_float = mraa_aio_read_float(adc_a0);
fprintf(stdout, "ADC A0 read %X - %d\n", adc_value, adc_value);
fprintf(stdout, "ADC A0 read float - %.5f\n", adc_value_float);
fprintf(stdout, "ADC A0 read float - %.5f (Ctrl+C to exit)\n", adc_value_float);
}
mraa_aio_close(adc_a0);
r = mraa_aio_close(adc_a0);
if (r != MRAA_SUCCESS) {
mraa_result_print(r);
}
return MRAA_SUCCESS;
return r;
}
//! [Interesting]