EEPROM AT30TSE75X Series

Low-level driver for the AT30TSE75X Series EEPROM controller.

This driver provides access to the main features of the AT30TSE75X Series EEPROM.

Macros
#define	AT30TSE75X_DEVICE_TYPE_ID_EEPROM   0x50
#define	AT30TSE75X_DEVICE_TYPE_ID_TEMP   0x48
#define	AT30TSE_EEPROM_TWI_ADDR
#define	AT30TSE_TEMPERATURE_TWI_ADDR
#define	BOARD_AT30TSE_DEVICE_ADDR   0x07 /* 0b111 */
#define	BOARD_AT30TSE_TWI   TWI0
#define	BOARD_AT30TSE_TWI_ID   ID_TWI0
#define	BOARD_TWI_SPEED   10000
#define	BOARD_USING_AT30TSE   AT30TSE758

Functions
uint8_t	at30tse_eeprom_read (uint8_t *data, uint8_t length, uint8_t word_addr, uint8_t page)
	Read EEPROM in AT30TSE75x. More...
uint8_t	at30tse_eeprom_write (uint8_t *data, uint8_t length, uint8_t word_addr, uint8_t page)
	Write EEPROM in AT30TSE75x. More...
void	at30tse_init (void)
	Initialize the TWI instance used for AT30TSE75x. More...
uint8_t	at30tse_read_register (uint8_t reg, uint8_t reg_type, uint8_t reg_size, uint8_t *buffer)
	Read register in AT30TSE75x. More...
uint8_t	at30tse_read_temperature (double *temperature)
	Read temperature. More...
uint8_t	at30tse_write_config_register (uint16_t value)
	Write nonvolatile configuration register in AT30TSE75x. More...
uint8_t	at30tse_write_register (uint8_t reg, uint8_t reg_type, uint8_t reg_size, uint16_t reg_value)
	Write register in AT30TSE75x. More...

Variables
volatile uint8_t	resolution = AT30TSE_CONFIG_RES_9_bit

#define AT30TSE75X_DEVICE_TYPE_ID_EEPROM   0x50

#define AT30TSE75X_DEVICE_TYPE_ID_TEMP   0x48

#define AT30TSE_EEPROM_TWI_ADDR

Value:

(AT30TSE75X_DEVICE_TYPE_ID_EEPROM | \
        (BOARD_AT30TSE_DEVICE_ADDR & 0x04))

Referenced by at30tse_eeprom_read(), and at30tse_eeprom_write().

#define AT30TSE_TEMPERATURE_TWI_ADDR

Value:

(AT30TSE75X_DEVICE_TYPE_ID_TEMP | \
        (BOARD_AT30TSE_DEVICE_ADDR & 0x07))

Referenced by at30tse_read_register(), and at30tse_write_register().

#define BOARD_AT30TSE_DEVICE_ADDR   0x07 /* 0b111 */

#define BOARD_AT30TSE_TWI   TWI0

Referenced by at30tse_eeprom_read(), at30tse_eeprom_write(), at30tse_init(), at30tse_read_register(), and at30tse_write_register().

#define BOARD_AT30TSE_TWI_ID   ID_TWI0

Referenced by at30tse_init().

#define BOARD_TWI_SPEED   10000

Referenced by at30tse_init().

#define BOARD_USING_AT30TSE   AT30TSE758

uint8_t at30tse_eeprom_read	(	uint8_t *	data,
		uint8_t	length,
		uint8_t	word_addr,
		uint8_t	page
	)

Read EEPROM in AT30TSE75x.

Parameters

data	Pointer to the data to be read
length	Length of the data to be read
word_addr	Start EEPROM address to be read
page	Specify the page to be read

Returns

TWI_SUCCESS if success, otherwise false

References twi_packet::addr, AT30TSE_EEPROM_TWI_ADDR, BOARD_AT30TSE_TWI, buffer, and twi_master_read().

uint8_t at30tse_eeprom_write	(	uint8_t *	data,
		uint8_t	length,
		uint8_t	word_addr,
		uint8_t	page
	)

Write EEPROM in AT30TSE75x.

Parameters

data	Pointer to the data to be written
length	Length of the data to be written
word_addr	Start EEPROM address to be written
page	Specify the page to be written

Returns

TWI_SUCCESS if success, otherwise false

References twi_packet::addr, AT30TSE_EEPROM_TWI_ADDR, BOARD_AT30TSE_TWI, buffer, and twi_master_write().

void at30tse_init

(

void

)

Initialize the TWI instance used for AT30TSE75x.

References BOARD_AT30TSE_TWI, BOARD_AT30TSE_TWI_ID, BOARD_TWI_SPEED, twi_options::master_clk, sysclk_enable_peripheral_clock(), sysclk_get_cpu_hz(), and twi_master_init().

Referenced by main().

uint8_t at30tse_read_register	(	uint8_t	reg,
		uint8_t	reg_type,
		uint8_t	reg_size,
		uint8_t *	buffer
	)

Read register in AT30TSE75x.

Parameters

reg	Register in AT30TSE75x to be read
reg_type	Specify the type of the register, nonvolatile or not
reg_size	Read lenght
buffer	Pointer to the buffer where the read data will be stored

Returns

TWI_SUCCESS if success, otherwise false

References twi_packet::addr, AT30TSE_TEMPERATURE_TWI_ADDR, BOARD_AT30TSE_TWI, buffer, and twi_master_read().

Referenced by at30tse_read_temperature().

uint8_t at30tse_read_temperature

(

double *

temperature

)

Read temperature.

Parameters

temperature

Pointer to the buffer where the temperature will be stored

Returns

TWI_SUCCESS if success, otherwise false

References AT30TSE_CONFIG_RES_10_bit, AT30TSE_CONFIG_RES_11_bit, AT30TSE_CONFIG_RES_12_bit, AT30TSE_CONFIG_RES_9_bit, AT30TSE_NON_VOLATILE_REG, at30tse_read_register(), AT30TSE_TEMPERATURE_REG, AT30TSE_TEMPERATURE_REG_SIZE, buffer, error_code, resolution, and TWI_SUCCESS.

Referenced by htp_temperature_send(), main(), and read_temperature_fix88().

uint8_t at30tse_write_config_register

(

uint16_t

value

)

Write nonvolatile configuration register in AT30TSE75x.

Parameters

value

Value to be written

Returns

TWI_SUCCESS if success, otherwise false

References AT30TSE_CONFIG_REG, AT30TSE_CONFIG_REG_SIZE, AT30TSE_CONFIG_RES_Msk, AT30TSE_CONFIG_RES_Pos, AT30TSE_NON_VOLATILE_REG, at30tse_write_register(), error_code, resolution, and TWI_SUCCESS.

Referenced by main().

uint8_t at30tse_write_register	(	uint8_t	reg,
		uint8_t	reg_type,
		uint8_t	reg_size,
		uint16_t	reg_value
	)

Write register in AT30TSE75x.

Parameters

reg	Register in AT30TSE75x to be read
reg_type	Specify the type of the register, nonvolatile or not
reg_size	Write lenght
reg_value	Value to be written

Returns

TWI_SUCCESS if success, otherwise false

References twi_packet::addr, AT30TSE_TEMPERATURE_TWI_ADDR, BOARD_AT30TSE_TWI, data, and twi_master_write().

Referenced by at30tse_write_config_register().

volatile uint8_t resolution = AT30TSE_CONFIG_RES_9_bit

Referenced by adc_set_resolution(), at30tse_read_temperature(), and at30tse_write_config_register().