#include <sys/types.h>
#include <cfg/arch.h>
#include <cfg/twi.h>
#include <dev/irqreg.h>
#include <stdint.h>

Include dependency graph for twif.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	_NUTTWIBUS
	TWI/I2C bus structure. More...
Defines
#define	TWI_SETSPEED 0x0401
	TWI ioctl() control codes.
#define	TWI_GETSPEED 0x0402
	Query transfer speed.
#define	TWI_SETSLAVEADDRESS 0x0403
	Set local slave address.
#define	TWI_GETSLAVEADDRESS 0x0404
	Query local slave address.
#define	TWI_SETSTATUS 0x0409
	Set status.
#define	TWI_GETSTATUS 0x040a
	Query status.
#define	TWERR_OK 0
	TWI error codes.
#define	TWERR_TIMEOUT -1
	Interface timeout.
#define	TWERR_BUS -2
	Bus error.
#define	TWERR_IF_LOCKED -3
	Interface locked.
#define	TWERR_SLA_NACK -4
	No slave response.
#define	TWERR_DATA_NACK -5
	Data not acknowledged.
#define	TWERR_OVRE -6
	Overrun Error.
#define	TWERR_ARBLOST -7
	Arbitration lost.
#define	TWERR_SPCTOUT -8
	Start/Stop Condition timeout.
#define	TWSLA_MIN 17
	Lowest slave address. Addresses below are reserved for special purposes.
#define	TWSLA_MAX 79
	Highest slave address. Addresses above are reserved for special purposes.
#define	TWSLA_BCAST 0
	Broadcast slave address.
#define	TWSLA_HOST 16
	Host slave address.
#define	TWSLA_DEFAULT 193
	Default slave address.
#define	TwInit(slv) NutRegisterTwiBus(&DEF_TWIBUS, slv)
#define	TwIOCtl(req, conf) NutTwiIOCtl(&DEF_TWIBUS, req, conf)
#define	TwMasterTransact(sla, txd, txl, rxd, rxs, tmo) NutTwiMasterTranceive(&DEF_TWIBUS, sla, txd, txl, rxd, rxs, tmo)
#define	TwMasterRegRead(sla, iadr, ial, rxd, rxs, tmo) NutTwiMasterRegRead(&DEF_TWIBUS, sla, iadr, ial, rxd, rxs, tmo)
#define	TwMasterRegWrite(sla, iadr, ial, txd, txs, tmo) NutTwiMasterRegWrite(&DEF_TWIBUS, sla, iadr, ial, txd, txs, tmo)
#define	TwMasterError(void) NutTwiMasterError(&DEF_TWIBUS)
#define	TwMasterIndexes(idx) NutTwiIndexes(&DEF_TWIBUS, idx)
#define	TwSlaveListen(sla, rxdata, rxsiz, tmo) NutTwiSlaveListen(&DEF_TWIBUS, rxdata, rxsiz, tmo)
#define	TwSlaveRespond(txdata, txlen, tmo) NutTwiSlaveRespond(&DEF_TWIBUS, txlen, tmo)
#define	TwSlaveError(void) NutTwiSlaveError(&DEF_TWIBUS)
Typedefs
typedef struct _NUTTWIBUS	NUTTWIBUS
Functions
int	NutTwiMasterTranceive (NUTTWIBUS bus, uint8_t sla, const void txdata, uint16_t txlen, void *rxdata, uint16_t rxsiz, uint32_t tmo)
	Transmit and/or receive data as a master.
int	NutTwiMasterRegRead (NUTTWIBUS bus, uint8_t sla, uint32_t iadr, uint8_t iadrlen, void rxdata, uint16_t rxsiz, uint32_t tmo)
	Receive data as a master from a device having internal addressable registers.
int	NutTwiMasterRegWrite (NUTTWIBUS bus, uint8_t sla, uint32_t iadr, uint8_t iadrlen, const void txdata, uint16_t txsiz, uint32_t tmo)
	Transmit data as a master to a device having internal addressable registers.
int	NutTwiMasterError (NUTTWIBUS *bus)
	Get last master mode error.
int	NutTwiSlaveListen (NUTTWIBUS bus, uint8_t sla, void *rxdata, uint16_t rxsiz, uint32_t tmo)
	Listen for incoming data from a master.
int	NutTwiSlaveRespond (NUTTWIBUS bus, void txdata, uint16_t txlen, uint32_t tmo)
	Send response to a master.
int	NutTwiSlaveError (NUTTWIBUS *bus)
	Get last slave mode error.
uint16_t	NutTwiIndexes (NUTTWIBUS *bus, uint8_t idx)
	Get last transfer results.
int	NutTwiIOCtl (NUTTWIBUS bus, int req, void conf)
	Perform TWI control functions.
int	NutRegisterTwiBus (NUTTWIBUS *bus, uint8_t sla)
	Initialize TWI interface bus.
int	NutDestroyTwiBus (NUTTWIBUS *bus)

Define Documentation

#define TWI_SETSPEED 0x0401

TWI ioctl() control codes.

Set transfer speed.

Referenced by NutTwiIOCtl().

#define TWI_GETSPEED 0x0402

Query transfer speed.

Referenced by NutTwiIOCtl().

#define TWI_SETSLAVEADDRESS 0x0403

Set local slave address.

Referenced by NutTwiIOCtl().

#define TWI_GETSLAVEADDRESS 0x0404

Query local slave address.

Referenced by NutTwiIOCtl().

#define TWI_SETSTATUS 0x0409

Set status.

Referenced by NutTwiIOCtl().

#define TWI_GETSTATUS 0x040a

Query status.

Referenced by NutTwiIOCtl().

#define TWERR_OK 0

TWI error codes.

No error occured.

#define TWERR_TIMEOUT -1

Interface timeout.

Referenced by NutTwiMasterRegRead(), NutTwiMasterRegWrite(), NutTwiMasterTranceive(), NutTwiSlaveListen(), NutTwiSlaveRespond(), NutTwiStartRolling(), and TwErrorIrq().

#define TWERR_BUS -2

Bus error.

Referenced by NutTwiSlaveError(), and TwErrorIrq().

#define TWERR_IF_LOCKED -3

Interface locked.

Referenced by NutTwiMasterRegRead(), NutTwiMasterRegWrite(), and NutTwiMasterTranceive().

#define TWERR_SLA_NACK -4

No slave response.

Referenced by NutTwiMasterTranceive(), and TwErrorIrq().

#define TWERR_DATA_NACK -5

Data not acknowledged.

#define TWERR_OVRE -6

Overrun Error.

Referenced by TwErrorIrq().

#define TWERR_ARBLOST -7

Arbitration lost.

Referenced by TwErrorIrq().

#define TWERR_SPCTOUT -8

Start/Stop Condition timeout.

Referenced by TwWaitForFlag().

#define TWSLA_MIN 17

Lowest slave address. Addresses below are reserved for special purposes.

#define TWSLA_MAX 79

Highest slave address. Addresses above are reserved for special purposes.

#define TWSLA_BCAST 0

Broadcast slave address.

#define TWSLA_HOST 16

Host slave address.

#define TWSLA_DEFAULT 193

Default slave address.

#define TwInit ( slv ) NutRegisterTwiBus(&DEF_TWIBUS, slv)

Referenced by DS1307Init(), EEInit(), NutTwiMasterTranceive(), PcfRtcInit(), and X12Init().

#define TwIOCtl	(	req,
		conf
	)	NutTwiIOCtl(&DEF_TWIBUS, req, conf)

#define TwMasterTransact	(	sla,
		txd,
		txl,
		rxd,
		rxs,
		tmo
	)	NutTwiMasterTranceive(&DEF_TWIBUS, sla, txd, txl, rxd, rxs, tmo)

Referenced by Cy2239xGetDivider(), Cy2239xGetFreq(), Cy2239xGetPll(), Cy2239xPllEnable(), Cy2239xPllGetFreq(), Cy2239xPllSetFreq(), Cy2239xSetDivider(), Cy2239xSetPll(), DS1307RamWrite(), DS1307RtcReadRegs(), DS1307RtcWrite(), PcfRtcReadRegs(), PcfRtcWrite(), ShtCommand(), X12EepromRead(), X12EepromWrite(), X12RtcReadRegs(), and X12RtcWrite().

#define TwMasterRegRead	(	sla,
		iadr,
		ial,
		rxd,
		rxs,
		tmo
	)	NutTwiMasterRegRead(&DEF_TWIBUS, sla, iadr, ial, rxd, rxs, tmo)

Referenced by IOExpGetBit(), IOExpRawRead(), Mma745xRead(), and ShtCommand().

#define TwMasterRegWrite	(	sla,
		iadr,
		ial,
		txd,
		txs,
		tmo
	)	NutTwiMasterRegWrite(&DEF_TWIBUS, sla, iadr, ial, txd, txs, tmo)

Referenced by IOExpInit(), IOExpPinConfigSet(), IOExpRawWrite(), IOExpSetBitHigh(), IOExpSetBitLow(), and Mma745xWrite().

#define TwMasterError ( void ) NutTwiMasterError(&DEF_TWIBUS)

#define TwMasterIndexes ( idx ) NutTwiIndexes(&DEF_TWIBUS, idx)

#define TwSlaveListen	(	sla,
		rxdata,
		rxsiz,
		tmo
	)	NutTwiSlaveListen(&DEF_TWIBUS, rxdata, rxsiz, tmo)

#define TwSlaveRespond	(	txdata,
		txlen,
		tmo
	)	NutTwiSlaveRespond(&DEF_TWIBUS, txlen, tmo)

#define TwSlaveError ( void ) NutTwiSlaveError(&DEF_TWIBUS)

Typedef Documentation

typedef struct _NUTTWIBUS NUTTWIBUS

Data Structures

Defines

Typedefs

Functions

Define Documentation

Typedef Documentation