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examples/media: If it is an MTD device, then do a bulk erase first

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This commit is contained in:
Gregory Nutt
2015-11-13 11:30:52 -06:00
parent 1dd862e574
commit f8621e623d
1 changed files with 10 additions and 0 deletions
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10
examples/media/media_main.c
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@@ -86,6 +86,8 @@ static void get_blocksize(int fd, FAR struct media_info_s *info)
ret = ioctl(fd, MTDIOC_GEOMETRY, (unsigned long)((uintptr_t)&mtdgeo)); ret = ioctl(fd, MTDIOC_GEOMETRY, (unsigned long)((uintptr_t)&mtdgeo));
if (ret >= 0) if (ret >= 0)
{ {
/* Its an MTD device. Use its geometry */
printf("MTD Geometry:\n"); printf("MTD Geometry:\n");
printf(" blocksize: %u\n", (unsigned int)mtdgeo.blocksize); printf(" blocksize: %u\n", (unsigned int)mtdgeo.blocksize);
printf(" erasesize: %lu\n", (unsigned long)mtdgeo.erasesize); printf(" erasesize: %lu\n", (unsigned long)mtdgeo.erasesize);
@@ -93,6 +95,14 @@ static void get_blocksize(int fd, FAR struct media_info_s *info)
info->blocksize = mtdgeo.erasesize; info->blocksize = mtdgeo.erasesize;
info->nblocks = mtdgeo.neraseblocks; info->nblocks = mtdgeo.neraseblocks;
/* Attempt to erase the entire MTD device */
ret = ioctl(fd, MTDIOC_BULKERASE, 0);
if (ret < 0)
{
fprintf(stderr, "ERROR: Failed erase the MTD device\n");
}
} }
/* Otherwise, use the configured default. We have no idea of the size /* Otherwise, use the configured default. We have no idea of the size