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Flesh out examples/media

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This commit is contained in:
Gregory Nutt 2015-11-09 13:10:00 -06:00
parent 9ee96d1430
commit 5fdd68f014
1 changed files with 216 additions and 6 deletions
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222
examples/media/media_main.c
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@ -53,6 +53,9 @@
* Pre-processor Definitions
****************************************************************************/
#define START_VALUE 0x20
#define END_VALUE 0x7f
/****************************************************************************
* Private types
****************************************************************************/
@ -117,8 +120,17 @@ int main(int argc, FAR char *argv[])
int media_main(int argc, char *argv[])
#endif
{
FAR uint8_t *buffer;
FAR uint8_t *txbuffer;
FAR uint8_t *rxbuffer;
struct media_info_s info;
ssize_t nwritten;
ssize_t nread;
off_t blockno;
off_t pos;
off_t seekpos;
off_t i;
uint32_t nerrors;
uint8_t value;
int fd;
/* Open the character driver that wraps the media */
@ -138,20 +150,218 @@ int media_main(int argc, char *argv[])
printf(" blocksize: %lu\n", (unsigned long)info.blocksize);
printf(" nblocks: %lu\n", (unsigned long)info.nblocks);
/* Allocate an I/O buffer of the correct block size */
/* Allocate I/O buffers of the correct block size */
buffer = (FAR uint8_t *)malloc((size_t)info.blocksize);
if (buffer == NULL)
txbuffer = (FAR uint8_t *)malloc((size_t)info.blocksize);
if (txbuffer == NULL)
{
fprintf(stderr, "ERROR: failed to allocate I/O buffer of size %ul\n",
fprintf(stderr, "ERROR: failed to allocate TX I/O buffer of size %ul\n",
(unsigned long)info.blocksize);
close(fd);
return 1;
}
rxbuffer = (FAR uint8_t *)malloc((size_t)info.blocksize);
if (rxbuffer == NULL)
{
fprintf(stderr, "ERROR: failed to allocate IRX /O buffer of size %ul\n",
(unsigned long)info.blocksize);
free(txbuffer);
close(fd);
return 1;
}
/* Write and verify each sector */
pos = 0;
nerrors = 0;
value = START_VALUE;
for (blockno = 0; info.nblocks == 0 || blockno < info.nblocks; blockno++)
{
/* Fill buffer with a (possibly) unique pattern */
for (i = 0; i < info.nblocks; i++)
{
txbuffer[i] = value;
if (++value >= END_VALUE)
{
value = START_VALUE;
}
}
seekpos = lseek(fd, pos, SEEK_SET);
if (seekpos == (off_t)-1)
{
int errcode = errno;
fprintf(stderr, "ERROR: lseek to %lu failed: %d\n",
(unsigned long)pos, errcode);
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
info.nblocks = blockno;
break;
}
else if (seekpos != pos)
{
fprintf(stderr, "ERROR: lseek failed: %lu vs %lu\n",
(unsigned)seekpos, (unsigned long) pos);
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
info.nblocks = blockno;
break;
}
nwritten = write(fd, txbuffer, info.blocksize);
if (nwritten < 0)
{
int errcode = errno;
fprintf(stderr, "ERROR: write failed: %d\n", errcode);
if (errno != EINTR)
{
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
info.nblocks = blockno;
break;
}
}
else if (nwritten != info.blocksize)
{
fprintf(stderr, "ERROR: Unexpected write size: %lu vs. %lu\n",
(unsigned long)nwritten, (unsigned long)info.blocksize);
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
info.nblocks = blockno;
break;
}
seekpos = lseek(fd, pos, SEEK_SET);
if (seekpos == (off_t)-1)
{
int errcode = errno;
fprintf(stderr, "ERROR: lseek to %lu failed: %d\n",
(unsigned long)pos, errcode);
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
info.nblocks = blockno;
break;
}
else if (seekpos != pos)
{
fprintf(stderr, "ERROR: lseek failed: %lu vs %lu\n",
(unsigned)seekpos, (unsigned long) pos);
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
info.nblocks = blockno;
break;
}
nread = read(fd, rxbuffer, info.blocksize);
if (nread < 0)
{
int errcode = errno;
fprintf(stderr, "ERROR: read failed: %d\n", errcode);
if (errno != EINTR)
{
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
info.nblocks = blockno;
break;
}
}
else if (nread != info.blocksize)
{
fprintf(stderr, "ERROR: Unexpected read size: %lu vs. %lu\n",
(unsigned long)nread, (unsigned long)info.blocksize);
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
info.nblocks = blockno;
break;
}
else
{
for (i = 0; i < info.blocksize; i++)
{
if (txbuffer[i] != rxbuffer[i])
{
fprintf(stderr,
"ERROR: block=%ul offset=%lu. Unexpected value: %02x vs. %02x\n",
blockno, i, rxbuffer[i], txbuffer[i]);
if (++nerrors > 100)
{
fprintf(stderr, "ERROR: Too many errors\n");
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
info.nblocks = blockno;
break;
}
}
}
}
}
/* Set the number of blocks if it was unknown before */
if (info.nblocks == 0)
{
info.nblocks = blockno;
}
/* Re-read and verify each sector */
value = START_VALUE;
for (blockno = 0; blockno < info.nblocks; blockno++)
{
/* Fill buffer with a (possibly) unique pattern */
for (i = 0; i < info.nblocks; i++)
{
txbuffer[i] = value;
if (++value >= END_VALUE)
{
value = START_VALUE;
}
}
nread = read(fd, rxbuffer, info.blocksize);
if (nread < 0)
{
int errcode = errno;
fprintf(stderr, "ERROR: read failed: %d\n", errcode);
if (errno != EINTR)
{
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
break;
}
}
else if (nread != info.blocksize)
{
fprintf(stderr, "ERROR: Unexpected read size: %lu vs. %lu\n",
(unsigned long)nread, (unsigned long)info.blocksize);
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
break;
}
else
{
for (i = 0; i < info.blocksize; i++)
{
if (txbuffer[i] != rxbuffer[i])
{
fprintf(stderr,
"ERROR: block=%ul offset=%lu. Unexpected value: %02x vs. %02x\n",
blockno, i, rxbuffer[i], txbuffer[i]);
if (++nerrors > 100)
{
fprintf(stderr, "ERROR: Too many errors\n");
fprintf(stderr, "ERROR: Aborting at block: %lu\n", blockno);
break;
}
}
}
}
}
/* Clean-up and exit */
free(buffer);
free(rxbuffer);
free(txbuffer);
close(fd);
return 0;
}