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/****************************************************************************
* examples/serialrx/serialrx_main.c
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 NuttX 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,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <nuttx/clock.h>
#include <nuttx/fs/fs.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define BUFFERED_IO
#define CHUNK 11520
/****************************************************************************
* Private Data
****************************************************************************/
static int count = 0;
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* serloop_main
****************************************************************************/
int serialrx_main(int argc, char *argv[])
{
FAR char *buf = (FAR char *)malloc(CHUNK);
FAR FILE *f;
printf("Reading from %s\n", argv[1]);
f = fopen(argv[1], "r");
while(1)
{
#ifdef BUFFERED_IO
int ret = fread(buf, 1, CHUNK, f);
#else
int ret = read(f->fs_fd, buf, CHUNK);
#endif
count += ret;
if (count >= CHUNK)
{
printf("-");
fflush(stdout);
count -= CHUNK;
}
}
free(buf);
return 0;
}
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