MEMORY - EEPROM AT24Cxx Series

Driver to access (read and write) AT24Cxx series EEPROM through a TWI interface.

Modules
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	In this section you can find all the projects related to the MEMORY - EEPROM AT24Cxx Series.

Functions
void	at24cxx_init (int32_t fcpu)
	This function will initialize the AT24CXX serial EEPROM. More...
uint8_t	at24cxx_read_byte (uint16_t byte_address)
	Read single byte from serial EEPROM. More...
void	at24cxx_read_continuous (uint16_t start_address, uint16_t length, uint8_t *rd_buffer)
	Read bytes continuously from the serial EEPROM. More...
void	at24cxx_write_byte (uint16_t byte_address, uint8_t byte_value)
	Write single byte to the serial EEPROM. More...
void	at24cxx_write_continuous (uint16_t start_address, uint16_t length, uint8_t const *wr_buffer)
	Write bytes continuously to the serial EEPROM. More...

void at24cxx_init

(

int32_t

fcpu

)

This function will initialize the AT24CXX serial EEPROM.

Note

Must be called before any of the access functions.

Return values

true	AT24CXX device ready to use.
false	Not able to initialize the AT24CXX device.

References cpu_hz.

Referenced by main().

uint8_t at24cxx_read_byte

(

uint16_t

byte_address

)

Read single byte from serial EEPROM.

Parameters

[in]	byte_address	Address of byte to read.
[out]	read_byte	Pointer to memory where the read byte will be stored.

Return values

true	Byte read successfully.
false	Byte could not be read.

References AT24CXX_TWI, AT24CXX_TWI_ADDRESS, data, twi_master_read(), twi_master_write(), twi_package_t, and TWI_SUCCESS.

Referenced by main().

void at24cxx_read_continuous	(	uint16_t	start_address,
		uint16_t	length,
		uint8_t *	rd_buffer
	)

Read bytes continuously from the serial EEPROM.

Parameters

[in]	start_address	Address of first byte to read.
[in]	length	Number of bytes to read.
[out]	rd_buffer	Pointer to memory where the read bytes will be stored.

Return values

true	Bytes read successfully.
false	Bytes could not be read.

References AT24CXX_TWI, AT24CXX_TWI_ADDRESS, length, twi_master_read(), twi_master_write(), twi_package_t, and TWI_SUCCESS.

void at24cxx_write_byte	(	uint16_t	byte_address,
		uint8_t	byte_value
	)

Write single byte to the serial EEPROM.

Parameters

[in]	byte_address	Address of byte to write.
[in]	byte_value	Value that will be written to the specified address.

Return values

true	Byte written successfully.
false	Byte could not be written.

References AT24CXX_TWI, AT24CXX_TWI_ADDRESS, twi_master_write(), twi_package_t, and TWI_SUCCESS.

Referenced by main().

void at24cxx_write_continuous	(	uint16_t	start_address,
		uint16_t	length,
		uint8_t const *	wr_buffer
	)

Write bytes continuously to the serial EEPROM.

Parameters

[in]	start_address	Address of first byte in transaction.
[in]	length	Number of bytes to write.
[in]	wr_buffer	Pointer to array where the bytes to be written are stored.

Return values

true	Bytes written successfully.
false	Bytes could not be written.

References AT24CXX_TWI, AT24CXX_TWI_ADDRESS, length, twi_master_write(), twi_package_t, and TWI_SUCCESS.