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nuttx-apps/examples/flash_test/flash_test.c

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/****************************************************************************
* apps/system/flash_test/flash_test.c
*
* Copyright (C) 2013 Ken Pettit. All rights reserved.
* Author: Ken Pettit <pettitkd@gmail.com>
*
* 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 <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <nuttx/mtd/mtd.h>
#include <nuttx/fs/smart.h>
#include <nuttx/fs/ioctl.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private data
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
int main(int argc, FAR char *argv[])
{
struct inode* inode;
int ret;
int x;
int logsector;
uint16_t seq;
struct smart_format_s fmt;
uint16_t *sectors;
uint16_t *seqs;
char *buffer;
struct smart_read_write_s readwrite;
/* Argument given? */
if (argc < 2)
{
fprintf(stderr, "usage: flash_test flash_block_device\n");
return -1;
}
/* Find the inode of the block driver identified by 'source' */
ret = open_blockdriver(argv[1], 0, &inode);
if (ret < 0)
{
fprintf(stderr, "Failed to open %s\n", argv[1]);
goto errout;
}
/* Get the low-level format from the device. */
ret = inode->u.i_bops->ioctl(inode, BIOC_GETFORMAT, (unsigned long) &fmt);
if (ret != OK)
{
fprintf(stderr, "Device is not a SMART block device\n");
goto errout_with_driver;
}
/* Test if the device is formatted. If not, then we must do a
* low-level format first */
if (!(fmt.flags & SMART_FMT_ISFORMATTED))
{
/* Perform a low-level format */
inode->u.i_bops->ioctl(inode, BIOC_LLFORMAT, 0);
inode->u.i_bops->ioctl(inode, BIOC_GETFORMAT, (unsigned long) &fmt);
}
if (!(fmt.flags & SMART_FMT_ISFORMATTED))
{
fprintf(stderr, "Unable to get device format\n");
goto errout_with_driver;
}
/* Report the device structure */
printf("FLASH Test on device with:\n");
printf(" Sector size: %10d\n", fmt.sectorsize);
printf(" Sector count: %10d\n", fmt.nsectors);
printf(" Avail bytes: %10d\n", fmt.availbytes);
printf(" Total size: %10d\n", fmt.sectorsize * fmt.nsectors);
/* Allocate buffers to use */
buffer = (char *) malloc(fmt.availbytes);
if (buffer == NULL)
{
fprintf(stderr, "Error allocating buffer\n");
goto errout_with_driver;
}
seqs = (uint16_t *) malloc(fmt.nsectors << 1);
if (seqs == NULL)
{
free(buffer);
fprintf(stderr, "Error allocating seqs buffer\n");
goto errout_with_driver;
}
sectors = (uint16_t *) malloc(fmt.nsectors << 1);
if (sectors == NULL)
{
free(seqs);
free(buffer);
fprintf(stderr, "Error allocating sectors buffer\n");
goto errout_with_driver;
}
/* Write a bunch of data to the flash */
printf("\nAllocating and writing to logical sectors\n");
seq = 0;
for (x = 0; x < fmt.nsectors >> 1; x++)
{
/* Allocate a new sector */
logsector = inode->u.i_bops->ioctl(inode, BIOC_ALLOCSECT,
(unsigned long) -1);
if (logsector < 0)
{
fprintf(stderr, "Error allocating sector: %d\n", logsector);
goto errout_with_driver;
}
/* Save the sector in our array */
sectors[x] = (uint16_t) logsector;
seqs[x] = seq++;
/* Now write some data to the sector */
sprintf(buffer, "Logical sector %d sequence %d\n",
sectors[x], seqs[x]);
readwrite.logsector = sectors[x];
readwrite.offset = 0;
readwrite.count = strlen(buffer) + 1;
readwrite.buffer = (uint8_t *) buffer;
inode->u.i_bops->ioctl(inode, BIOC_WRITESECT, (unsigned long)
&readwrite);
/* Print the logical sector number */
printf("\r%d ", sectors[x]);
}
/* Now read the data back to validate everything was written and can
* be read. */
printf("\nDoing read verify test\n");
for (x = 0; x < fmt.nsectors >> 1; x++)
{
/* Read from the logical sector */
readwrite.logsector = sectors[x];
readwrite.offset = 0;
readwrite.count = fmt.availbytes;
readwrite.buffer = (uint8_t *) buffer;
ret = inode->u.i_bops->ioctl(inode, BIOC_READSECT, (unsigned long)
&readwrite);
if (ret != fmt.availbytes)
{
fprintf(stderr, "Error reading sector %d\n", sectors[x]);
goto errout_with_buffers;
}
/* Generate compare string and do the compare */
printf("\r%d ", sectors[x]);
sprintf(&buffer[100], "Logical sector %d sequence %d\n",
sectors[x], seqs[x]);
if (strcmp(buffer, &buffer[100]) != 0)
{
printf("Sector %d read verify failed\n", sectors[x]);
}
}
printf("\nPeforming sector re-write\n");
/* Overwrite data on the sectors to cause relocation */
for (x = 0; x < fmt.nsectors >> 1; x++)
{
/* Save a new sequence number for the sector */
seqs[x] = seq++;
/* Now write over the sector data with new data, causing a relocation. */
sprintf(buffer, "Logical sector %d sequence %d\n", sectors[x], seqs[x]);
readwrite.logsector = sectors[x];
readwrite.offset = 0;
readwrite.count = strlen(buffer) + 1;
readwrite.buffer = (uint8_t *) buffer;
inode->u.i_bops->ioctl(inode, BIOC_WRITESECT, (unsigned long)
&readwrite);
/* Print the logical sector number */
printf("\r%d ", sectors[x]);
}
/* Now append data to empty region of sector */
printf("\nAppending data to empty region of sector\n");
for (x = 0; x < fmt.nsectors >> 1; x++)
{
/* Save a new sequence number for the sector */
seqs[x] = seq++;
/* Now write over the sector data with new data, causing a relocation. */
sprintf(buffer, "Appended data in sector %d\n", sectors[x]);
readwrite.logsector = sectors[x];
readwrite.offset = 64;
readwrite.count = strlen(buffer) + 1;
readwrite.buffer = (uint8_t *) buffer;
inode->u.i_bops->ioctl(inode, BIOC_WRITESECT, (unsigned long)
&readwrite);
/* Print the logical sector number */
printf("\r%d ", sectors[x]);
}
printf("\nDone\n");
/* Free all the allocated sectors */
for (x = 0; x < fmt.nsectors >> 1; x++)
{
/* Only free the sector if it is still valid */
if (sectors[x] != 0xFFFF)
{
inode->u.i_bops->ioctl(inode, BIOC_FREESECT, (unsigned long)
sectors[x]);
}
}
errout_with_buffers:
/* Free the allocated buffers */
free(seqs);
free(sectors);
free(buffer);
errout_with_driver:
/* Now close the block device and exit */
close_blockdriver(inode);
errout:
return 0;
}
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