twi.c File Reference

#include <math.h>
#include <stdlib.h>
#include <inttypes.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <compat/twi.h>
#include "Arduino.h"
#include "pins_arduino.h"
#include "twi.h"

Include dependency graph for twi.c:

Macros
#define	cbi(sfr, bit)   (_SFR_BYTE(sfr) &= ~_BV(bit))
#define	sbi(sfr, bit)   (_SFR_BYTE(sfr) |= _BV(bit))

Functions
void	twi_init (void)
void	twi_disable (void)
void	twi_setAddress (uint8_t address)
void	twi_setFrequency (uint32_t frequency)
uint8_t	twi_readFrom (uint8_t address, uint8_t *data, uint8_t length, uint8_t sendStop)
uint8_t	twi_writeTo (uint8_t address, uint8_t *data, uint8_t length, uint8_t wait, uint8_t sendStop)
uint8_t	twi_transmit (const uint8_t *data, uint8_t length)
void	twi_attachSlaveRxEvent (void(*function)(uint8_t *, int))
void	twi_attachSlaveTxEvent (void(*function)(void))
void	twi_reply (uint8_t ack)
void	twi_stop (void)
void	twi_releaseBus (void)
	ISR (TWI_vect)

Variables
static volatile uint8_t	twi_state
static volatile uint8_t	twi_slarw
static volatile uint8_t	twi_sendStop
static volatile uint8_t	twi_inRepStart
static void(*	twi_onSlaveTransmit )(void)
static void(*	twi_onSlaveReceive )(uint8_t *, int)
static uint8_t	twi_masterBuffer [TWI_BUFFER_LENGTH]
static volatile uint8_t	twi_masterBufferIndex
static volatile uint8_t	twi_masterBufferLength
static uint8_t	twi_txBuffer [TWI_BUFFER_LENGTH]
static volatile uint8_t	twi_txBufferIndex
static volatile uint8_t	twi_txBufferLength
static uint8_t	twi_rxBuffer [TWI_BUFFER_LENGTH]
static volatile uint8_t	twi_rxBufferIndex
static volatile uint8_t	twi_error

Macro Definition Documentation

cbi

#define cbi	(		sfr,
			bit
	)		(_SFR_BYTE(sfr) &= ~_BV(bit))

sbi

#define sbi	(		sfr,
			bit
	)		(_SFR_BYTE(sfr) |= _BV(bit))

Function Documentation

ISR()

ISR

(

TWI_vect

)

twi_attachSlaveRxEvent()

void twi_attachSlaveRxEvent

(

void(*)(uint8_t *, int)

function

)

twi_attachSlaveTxEvent()

void twi_attachSlaveTxEvent

(

void(*)(void)

function

)

twi_disable()

void twi_disable

(

void

)

twi_init()

void twi_init

(

void

)

twi_readFrom()

uint8_t twi_readFrom	(	uint8_t	address,
		uint8_t *	data,
		uint8_t	length,
		uint8_t	sendStop
	)

twi_releaseBus()

void twi_releaseBus

(

void

)

twi_reply()

void twi_reply

(

uint8_t

ack

)

twi_setAddress()

void twi_setAddress

(

uint8_t

address

)

twi_setFrequency()

void twi_setFrequency

(

uint32_t

frequency

)

twi_stop()

void twi_stop

(

void

)

twi_transmit()

uint8_t twi_transmit	(	const uint8_t *	data,
		uint8_t	length
	)

twi_writeTo()

uint8_t twi_writeTo	(	uint8_t	address,
		uint8_t *	data,
		uint8_t	length,
		uint8_t	wait,
		uint8_t	sendStop
	)

Variable Documentation

twi_error

volatile uint8_t twi_error

static

twi_inRepStart

volatile uint8_t twi_inRepStart

static

twi_masterBuffer

uint8_t twi_masterBuffer[TWI_BUFFER_LENGTH]

static

twi_masterBufferIndex

volatile uint8_t twi_masterBufferIndex

static

twi_masterBufferLength

volatile uint8_t twi_masterBufferLength

static

twi_onSlaveReceive

void(* twi_onSlaveReceive) (uint8_t *, int)

static

twi_onSlaveTransmit

void(* twi_onSlaveTransmit) (void)

static

twi_rxBuffer

uint8_t twi_rxBuffer[TWI_BUFFER_LENGTH]

static

twi_rxBufferIndex

volatile uint8_t twi_rxBufferIndex

static

twi_sendStop

volatile uint8_t twi_sendStop

static

twi_slarw

volatile uint8_t twi_slarw

static

twi_state

volatile uint8_t twi_state

static

twi_txBuffer

uint8_t twi_txBuffer[TWI_BUFFER_LENGTH]

static

twi_txBufferIndex

volatile uint8_t twi_txBufferIndex

static

twi_txBufferLength

volatile uint8_t twi_txBufferLength

static