- Generated on Mon Oct 20 2025 13:02:33 by
1.9.1
MTD driver interface. More...
MTD driver interface.
This define the functions to access a MTD.
A MTD is composed of pages combined into sectors. A sector is the smallest erasable unit. The number of pages in a sector must be constant for the whole MTD.
The erase operation is available only for entire sectors.
#include <mtd.h>
Data Fields | |
| int(* | init )(mtd_dev_t *dev) |
| Initialize Memory Technology Device (MTD) More... | |
| int(* | read )(mtd_dev_t *dev, void *buff, uint32_t addr, uint32_t size) |
| Read from the Memory Technology Device (MTD) More... | |
| int(* | read_page )(mtd_dev_t *dev, void *buff, uint32_t page, uint32_t offset, uint32_t size) |
| Read from the Memory Technology Device (MTD) using pagewise addressing. More... | |
| int(* | write_page )(mtd_dev_t *dev, const void *buff, uint32_t page, uint32_t offset, uint32_t size) |
| Write to the Memory Technology Device (MTD) using pagewise addressing. More... | |
| int(* | erase )(mtd_dev_t *dev, uint32_t addr, uint32_t size) |
| Erase sector(s) over the Memory Technology Device (MTD) More... | |
| int(* | erase_sector )(mtd_dev_t *dev, uint32_t sector, uint32_t count) |
| Erase sector(s) of the Memory Technology Device (MTD) More... | |
| int(* | power )(mtd_dev_t *dev, enum mtd_power_state power) |
| Control power of Memory Technology Device (MTD) More... | |
| uint8_t | flags |
| Properties of the MTD driver. | |
| int(* mtd_desc::erase) (mtd_dev_t *dev, uint32_t addr, uint32_t size) |
Erase sector(s) over the Memory Technology Device (MTD)
addr must be aligned on a sector boundary. size must be a multiple of a sector size.
| [in] | dev | Pointer to the selected driver |
| [in] | addr | Starting address |
| [in] | size | Number of bytes |
| 0 | on success |
| <0 | value on error |
| int(* mtd_desc::erase_sector) (mtd_dev_t *dev, uint32_t sector, uint32_t count) |
| int(* mtd_desc::init) (mtd_dev_t *dev) |
| int(* mtd_desc::power) (mtd_dev_t *dev, enum mtd_power_state power) |
Control power of Memory Technology Device (MTD)
| [in] | dev | Pointer to the selected driver |
| [in] | power | Power state to apply (from mtd_power_state) |
| 0 | on success |
| <0 | value on error |
| int(* mtd_desc::read) (mtd_dev_t *dev, void *buff, uint32_t addr, uint32_t size) |
Read from the Memory Technology Device (MTD)
No alignment is required on addr and size.
| [in] | dev | Pointer to the selected driver |
| [out] | buff | Pointer to the data buffer to store read data |
| [in] | addr | Starting address |
| [in] | size | Number of bytes |
| 0 | on success |
| <0 | value on error |
| int(* mtd_desc::read_page) (mtd_dev_t *dev, void *buff, uint32_t page, uint32_t offset, uint32_t size) |
Read from the Memory Technology Device (MTD) using pagewise addressing.
offset should not exceed the page size
| [in] | dev | Pointer to the selected driver |
| [out] | buff | Pointer to the data buffer to store read data |
| [in] | page | Page number to start reading from |
| [in] | offset | Byte offset from the start of the page |
| [in] | size | Number of bytes |
| n | number of bytes read on success |
| <0 | value on error |
| int(* mtd_desc::write_page) (mtd_dev_t *dev, const void *buff, uint32_t page, uint32_t offset, uint32_t size) |
Write to the Memory Technology Device (MTD) using pagewise addressing.
offset should not exceed the page size
| [in] | dev | Pointer to the selected driver |
| [out] | buff | Pointer to the data to be written |
| [in] | page | Page number to start writing to |
| [in] | offset | Byte offset from the start of the page |
| [in] | size | Number of bytes |
| n | bytes written on success |
| <0 | value on error |
1.9.1