/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name PX4 nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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****************************************************************************/
/**
* @file tests_file.c
*
* File write test.
*/
#include <sys/stat.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <systemlib/err.h>
#include <systemlib/perf_counter.h>
#include <string.h>
#include <drivers/drv_hrt.h>
#include "tests.h"
int
test_file(int argc, char *argv[])
{
/* check if microSD card is mounted */
struct stat buffer;
if (stat("/fs/microsd/", &buffer)) {
warnx("no microSD card mounted, aborting file test");
return 1;
}
uint8_t buf[512];
hrt_abstime start, end;
perf_counter_t wperf = perf_alloc(PC_ELAPSED, "SD writes");
int fd = open("/fs/microsd/testfile", O_TRUNC | O_WRONLY | O_CREAT);
memset(buf, 0, sizeof(buf));
start = hrt_absolute_time();
for (unsigned i = 0; i < 1024; i++) {
perf_begin(wperf);
write(fd, buf, sizeof(buf));
perf_end(wperf);
}
end = hrt_absolute_time();
close(fd);
warnx("512KiB in %llu microseconds", end - start);
perf_print_counter(wperf);
perf_free(wperf);
return 0;
}
