AT24C32 Class Reference

#include <AT24CXX.h>

Inheritance diagram for AT24C32:

Collaboration diagram for AT24C32:

Public Member Functions
	AT24C32 (TWI &twi, uint8_t subaddr=0)
bool	is_ready ()
int	read (void *dest, uint16_t src, size_t count)
int	write (uint16_t dest, const void *src, size_t count)

Public Attributes
const uint16_t	PAGE_MAX
const uint16_t	PAGE_MASK
const size_t	SIZE

Protected Member Functions
int	read (void *buf, size_t count)
int	write (const void *buf, size_t count)
int	write (iovec_t *vp)
bool	acquire ()
bool	release ()

Protected Attributes
TWI &	m_twi
uint8_t	m_addr

Detailed Description

The AT24C32 provides 32,768 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 4096 words of 8 bits each. 32-Byte page write mode.

See Atmel Product description (Rev. 0336K-SEEPR-7/03), www.atmel.com/images/doc0336.pdf

Definition at line 174 of file AT24CXX.h.

Constructor & Destructor Documentation

AT24C32::AT24C32 ( TWI &  twi, uint8_t  subaddr = 0  )

inline

Definition at line 176 of file AT24CXX.h.

Member Function Documentation

bool TWI::Device::acquire ( )

inlineinherited

Start transaction. Return true(1) if successful otherwise false(0).

Returns

bool.

Definition at line 51 of file TWI.h.

bool AT24CXX::is_ready ( )

inlineinherited

Return true(1) if the device is ready, write cycle is completed, otherwise false(0).

Returns

bool.

Definition at line 82 of file AT24CXX.h.

int TWI::Device::read ( void *  buf, size_t  count  )

inlineinherited

Read data from device to given buffer.

Parameters

[in]	buf	buffer pointer.
[in]	count	buffer size in bytes.

Returns

number of bytes read or negative error code.

Definition at line 72 of file TWI.h.

int AT24CXX::read ( void *  dest, uint16_t  src, size_t  count  )

inlineinherited

Read eeprom block with the given size into the buffer from the address. Return number of bytes read or negative error code.

Parameters

[in]	dest	buffer to read from eeprom.
[in]	src	address in eeprom to read from.
[in]	count	number of bytes to read.

Returns

number of bytes or negative error code.

Definition at line 98 of file AT24CXX.h.

bool TWI::Device::release ( )

inlineinherited

Stop transaction. Return true(1) if successful otherwise false(0).

Returns

bool.

Definition at line 61 of file TWI.h.

int TWI::Device::write ( const void *  buf, size_t  count  )

inlineinherited

Write data from the given buffer to device.

Parameters

[in]	buf	buffer pointer.
[in]	count	buffer size in bytes.

Returns

number of bytes written or negative error code.

Definition at line 83 of file TWI.h.

int TWI::Device::write ( iovec_t *  vp )

inlineinherited

Write data to device with from given io vector.

Parameters

[in]

vp

io vector pointer.

Returns

number of bytes written or negative error code.

Definition at line 93 of file TWI.h.

int AT24CXX::write ( uint16_t  dest, const void *  src, size_t  count  )

inlineinherited

Write eeprom block at given address with the contents from the buffer. Return number of bytes written or negative error code.

Parameters

[in]	dest	address in eeprom to read write to.
[in]	src	buffer to write to eeprom.
[in]	count	number of bytes to write.

Returns

number of bytes or negative error code.

Definition at line 124 of file AT24CXX.h.

Member Data Documentation

uint8_t TWI::Device::m_addr

protectedinherited

Device address.

Definition at line 103 of file TWI.h.

TWI& TWI::Device::m_twi

protectedinherited

Two-Wire Interface Manager.

Definition at line 100 of file TWI.h.

const uint16_t AT24CXX::PAGE_MASK

inherited

Memory addres page mask.

Definition at line 54 of file AT24CXX.h.

const uint16_t AT24CXX::PAGE_MAX

inherited

Number of bytes in max write page size.

Definition at line 51 of file AT24CXX.h.

const size_t AT24CXX::SIZE

inherited

Number of bytes on device.

Definition at line 57 of file AT24CXX.h.

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The documentation for this class was generated from the following file:

• src/Driver/AT24CXX.h