EEPROM¶
Overview¶
The EEPROM API provides read and write access to Electrically Erasable Programmable Read-Only Memory (EEPROM) devices.
EEPROMs have an erase block size of 1 byte, a long lifetime, and allow overwriting data on byte-by-byte access.
Configuration Options¶
Related configuration options:
API Reference¶
- group eeprom_interface
EEPROM Interface.
Typedefs
-
typedef int (*eeprom_api_read)(const struct device *dev, off_t offset, void *data, size_t len)¶
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typedef int (*eeprom_api_write)(const struct device *dev, off_t offset, const void *data, size_t len)¶
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typedef size_t (*eeprom_api_size)(const struct device *dev)¶
Functions
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int eeprom_read(const struct device *dev, off_t offset, void *data, size_t len)¶
Read data from EEPROM.
- Parameters
dev – EEPROM device
offset – Address offset to read from.
data – Buffer to store read data.
len – Number of bytes to read.
- Returns
0 on success, negative errno code on failure.
-
int eeprom_write(const struct device *dev, off_t offset, const void *data, size_t len)¶
Write data to EEPROM.
- Parameters
dev – EEPROM device
offset – Address offset to write data to.
data – Buffer with data to write.
len – Number of bytes to write.
- Returns
0 on success, negative errno code on failure.
-
size_t eeprom_get_size(const struct device *dev)¶
Get the size of the EEPROM in bytes.
- Parameters
dev – EEPROM device.
- Returns
EEPROM size in bytes.
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struct eeprom_driver_api¶
- #include <eeprom.h>
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typedef int (*eeprom_api_read)(const struct device *dev, off_t offset, void *data, size_t len)¶