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| author | Gregory Nutt <gnutt@nuttx.org> | 2013-05-01 10:59:57 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2013-05-01 10:59:57 -0600 |
| commit | 5b280602d79bbb1a0625016be023aa429d6fe898 (patch) | |
| tree | 3e0960e407ea8021ed20ed0bcbde56e36a226c25 /nuttx/include | |
| parent | 1a5060c28be4edffb32eabc2ad422254fcd72bb2 (diff) | |
| download | px4-nuttx-5b280602d79bbb1a0625016be023aa429d6fe898.tar.gz px4-nuttx-5b280602d79bbb1a0625016be023aa429d6fe898.tar.bz2 px4-nuttx-5b280602d79bbb1a0625016be023aa429d6fe898.zip | |
Add an optional byte-oriented write method to the MTD interface
Diffstat (limited to 'nuttx/include')
| -rw-r--r-- | nuttx/include/nuttx/mtd.h | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/nuttx/include/nuttx/mtd.h b/nuttx/include/nuttx/mtd.h index d90ea5f6b..dc2a9bc82 100644 --- a/nuttx/include/nuttx/mtd.h +++ b/nuttx/include/nuttx/mtd.h @@ -52,11 +52,12 @@ /* Macros to hide implementation */ -#define MTD_ERASE(d,s,n) ((d)->erase ? (d)->erase(d,s,n) : (-ENOSYS)) -#define MTD_BREAD(d,s,n,b) ((d)->bread ? (d)->bread(d,s,n,b) : (-ENOSYS)) -#define MTD_READ(d,s,n,b) ((d)->read ? (d)->read(d,s,n,b) : (-ENOSYS)) -#define MTD_BWRITE(d,s,n,b)((d)->bwrite ? (d)->bwrite(d,s,n,b) : (-ENOSYS)) -#define MTD_IOCTL(d,c,a) ((d)->ioctl ? (d)->ioctl(d,c,a) : (-ENOSYS)) +#define MTD_ERASE(d,s,n) ((d)->erase ? (d)->erase(d,s,n) : (-ENOSYS)) +#define MTD_BREAD(d,s,n,b) ((d)->bread ? (d)->bread(d,s,n,b) : (-ENOSYS)) +#define MTD_BWRITE(d,s,n,b)((d)->bwrite ? (d)->bwrite(d,s,n,b) : (-ENOSYS)) +#define MTD_READ(d,s,n,b) ((d)->read ? (d)->read(d,s,n,b) : (-ENOSYS)) +#define MTD_WRITE(d,s,n,b) ((d)->write ? (d)->write(d,s,n,b) : (-ENOSYS)) +#define MTD_IOCTL(d,c,a) ((d)->ioctl ? (d)->ioctl(d,c,a) : (-ENOSYS)) /* If any of the low-level device drivers declare they want sub-sector erase * support, then define MTD_SUBSECTOR_ERASE. @@ -108,7 +109,12 @@ struct mtd_dev_s { /* The following methods operate on the MTD: */ - /* Erase the specified erase blocks (units are erase blocks) */ + /* Erase the specified erase blocks (units are erase blocks). Semantic + * Clarification: Here, we are not referring to the erase block according + * to the FLASH data sheet. Rather, we are referring to the *smallest* + * eraseable part of the FLASH which may have a name like a page or sector + * or subsector. + */ int (*erase)(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks); @@ -127,6 +133,10 @@ struct mtd_dev_s ssize_t (*read)(FAR struct mtd_dev_s *dev, off_t offset, size_t nbytes, FAR uint8_t *buffer); +#ifdef CONFIG_MTD_BYTE_WRITE + ssize_t (*write)(FAR struct mtd_dev_s *dev, off_t offset, size_t nbytes, + FAR const uint8_t *buffer); +#endif /* Support other, less frequently used commands: * - MTDIOC_GEOMETRY: Get MTD geometry |