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:

Go to the source code of this file.

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

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

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

Macro Definition Documentation

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

Definition at line 31 of file twi.c.

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

Definition at line 35 of file twi.c.

Function Documentation

ISR

(

TWI_vect

)

Definition at line 399 of file twi.c.

void twi_attachSlaveRxEvent

(

void(*)(uint8_t *, int)

function

)

Definition at line 331 of file twi.c.

void twi_attachSlaveTxEvent

(

void(*)(void)

function

)

Definition at line 342 of file twi.c.

void twi_disable

(

void

)

Definition at line 99 of file twi.c.

void twi_init

(

void

)

Definition at line 68 of file twi.c.

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

Definition at line 147 of file twi.c.

void twi_releaseBus

(

void

)

Definition at line 390 of file twi.c.

void twi_reply

(

uint8_t

ack

)

Definition at line 353 of file twi.c.

void twi_setAddress

(

uint8_t

address

)

Definition at line 115 of file twi.c.

void twi_setFrequency

(

uint32_t

frequency

)

Definition at line 127 of file twi.c.

void twi_stop

(

void

)

Definition at line 369 of file twi.c.

uint8_t twi_transmit	(	const uint8_t *	data,
		uint8_t	length
	)

Definition at line 302 of file twi.c.

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

Definition at line 226 of file twi.c.

Variable Documentation

volatile uint8_t twi_error

static

Definition at line 60 of file twi.c.

volatile uint8_t twi_inRepStart

static

Definition at line 44 of file twi.c.

uint8_t twi_masterBuffer[TWI_BUFFER_LENGTH]

static

Definition at line 49 of file twi.c.

volatile uint8_t twi_masterBufferIndex

static

Definition at line 50 of file twi.c.

volatile uint8_t twi_masterBufferLength

static

Definition at line 51 of file twi.c.

void(* twi_onSlaveReceive) (uint8_t *, int)

static

Definition at line 47 of file twi.c.

void(* twi_onSlaveTransmit) (void)

static

Definition at line 46 of file twi.c.

uint8_t twi_rxBuffer[TWI_BUFFER_LENGTH]

static

Definition at line 57 of file twi.c.

volatile uint8_t twi_rxBufferIndex

static

Definition at line 58 of file twi.c.

volatile uint8_t twi_sendStop

static

Definition at line 43 of file twi.c.

volatile uint8_t twi_slarw

static

Definition at line 42 of file twi.c.

volatile uint8_t twi_state

static

Definition at line 41 of file twi.c.

uint8_t twi_txBuffer[TWI_BUFFER_LENGTH]

static

Definition at line 53 of file twi.c.

volatile uint8_t twi_txBufferIndex

static

Definition at line 54 of file twi.c.

volatile uint8_t twi_txBufferLength

static

Definition at line 55 of file twi.c.