twibus_gpio.c

References Functions:

TwGpioInit()

nut/dev/twibus_gpio.c

Included Files

#include <nut/include/cfg/os.h>

#include <nut/include/cfg/twi.h>

#include <nut/include/cfg/arch/gpio.h>

#include <nut/include/sys/heap.h>

#include <nut/include/sys/event.h>

#include <nut/include/sys/timer.h>

#include <nut/include/include2/string.h>

#include <nut/include/dev/twif.h>

#include <nut/include/dev/gpio.h>

Preprocessor definitions

#define SDA_INIT

#define SCL_INIT

#define SCL_HIGH

#define SCL_LOW

#define SDA_HIGH

#define SDA_LOW

#define SDA_STAT 0

#define SCL_RELEASE

#define SCL_DRIVE

#define SDA_RELEASE

#define SDA_DRIVE

#define TWI_GPIO_UNDEFINED

Global Variable TwGpioBus

NUTTWIBUS TwGpioBus

Visible in:

nut/dev/twibus_gpio.c

Local Variables

twibb_initialized
static int_fast8_t twibb_initialized

Used in:	NutTwiMasterTranceive()
	TwGpioInit()

delay_unit
static uint_fast16_t delay_unit

Used in:	NutTwiGetSpeed()
	NutTwiSetSpeed()
	TwDelay()

tw_mm_error
static volatile int_fast8_t tw_mm_error

Used in:	NutTwiMasterError()
	NutTwiMasterTranceive()

Global Function NutDestroyTwiBus()

int NutDestroyTwiBus ( NUTTWIBUS* bus )

Prototyped in:

nut/include/dev/twif.h

Global Function NutRegisterTwiBus()

int NutRegisterTwiBus ( NUTTWIBUS* bus, uint8_t sla )

Prototyped in:	nut/include/dev/twif.h
Calls:	NutEventPost()
Called by:	DS1307Init()	nut/dev/ds1307rtc.c
	EEInit()	nut/dev/eeprom.c
	PcfRtcInit()	nut/dev/pcf8563.c

Global Function NutTwiIOCtl()

int NutTwiIOCtl ( NUTTWIBUS* bus, int req, void* conf )

Prototyped in:	nut/include/dev/twif.h
Calls:	NutTwiGetSpeed()	nut/dev/twibus_gpio.c
	NutTwiSetSpeed()	nut/dev/twibus_gpio.c

Global Function NutTwiMasterError()

int NutTwiMasterError ( NUTTWIBUS* bus )

Prototyped in:	nut/include/dev/twif.h
References Variables:	tw_mm_error	nut/dev/twibus_gpio.c

Global Function NutTwiMasterTranceive()

int NutTwiMasterTranceive ( NUTTWIBUS* bus, uint8_t sla, const void* txdata, uint16_t txlen, void* rxdata, uint16_t rxsiz, uint32_t tmo )

Prototyped in:	nut/include/dev/twif.h
Calls:	TwAck()	nut/dev/twibus_gpio.c
	TwGet()	nut/dev/twibus_gpio.c
	TwGpioInit()	nut/dev/twibus_gpio.c
	TwPut()	nut/dev/twibus_gpio.c
	TwStart()	nut/dev/twibus_gpio.c
	TwStop()	nut/dev/twibus_gpio.c
	NutEventPost(), NutEventWait()
Called by:	Cy2239xGetDivider()	nut/dev/cy2239x.c
	Cy2239xGetFreq()	nut/dev/cy2239x.c
	Cy2239xGetPll()	nut/dev/cy2239x.c
	Cy2239xPllEnable()	nut/dev/cy2239x.c
	Cy2239xPllGetFreq()	nut/dev/cy2239x.c
	Cy2239xPllSetFreq()	nut/dev/cy2239x.c
	Cy2239xSetDivider()	nut/dev/cy2239x.c
	Cy2239xSetPll()	nut/dev/cy2239x.c
	DS1307RamWrite()	nut/dev/ds1307rtc.c
	DS1307RtcReadRegs()	nut/dev/ds1307rtc.c
	DS1307RtcWrite()	nut/dev/ds1307rtc.c
	PcfRtcReadRegs()	nut/dev/pcf8563.c
	PcfRtcWrite()	nut/dev/pcf8563.c
	ShtCommand()	nut/dev/sht21.c
References Variables:	tw_mm_error	nut/dev/twibus_gpio.c
	twibb_initialized	nut/dev/twibus_gpio.c

Global Function NutTwiSlaveError()

int NutTwiSlaveError ( NUTTWIBUS* bus )

Prototyped in:

nut/include/dev/twif.h

Global Function NutTwiSlaveListen()

int NutTwiSlaveListen ( NUTTWIBUS* bus, uint8_t* sla, void* rxdata, uint16_t rxsiz, uint32_t tmo )

Prototyped in:

nut/include/dev/twif.h

Global Function NutTwiSlaveRespond()

int NutTwiSlaveRespond ( NUTTWIBUS* bus, void* txdata, uint16_t txlen, uint32_t tmo )

Prototyped in:

nut/include/dev/twif.h

Local Function NutTwiGetSpeed()

static uint32_t NutTwiGetSpeed ( void )

Called by:	NutTwiIOCtl()	nut/dev/twibus_gpio.c
References Variables:	delay_unit	nut/dev/twibus_gpio.c

Local Function NutTwiSetSpeed()

static int NutTwiSetSpeed ( NUTTWIBUS* bus, uint32_t* speed )

Called by:	NutTwiIOCtl()	nut/dev/twibus_gpio.c
References Variables:	delay_unit	nut/dev/twibus_gpio.c

Local Function TwAck()

static void TwAck ( void )

Calls:	TwDelay()	nut/dev/twibus_gpio.c
Called by:	NutTwiMasterTranceive()	nut/dev/twibus_gpio.c

Local Function TwDelay()

static void TwDelay ( int nops )

Calls:	NutMicroDelay()
Called by:	TwAck()	nut/dev/twibus_gpio.c
	TwGet()	nut/dev/twibus_gpio.c
	TwPut()	nut/dev/twibus_gpio.c
	TwStart()	nut/dev/twibus_gpio.c
	TwStop()	nut/dev/twibus_gpio.c
References Variables:	delay_unit	nut/dev/twibus_gpio.c

Local Function TwGet()

static uint8_t TwGet ( void )

Calls:	TwDelay()	nut/dev/twibus_gpio.c
Called by:	NutTwiMasterTranceive()	nut/dev/twibus_gpio.c

Local Function TwGpioInit()

static int TwGpioInit ( void )

Called by:	NutTwiMasterTranceive()	nut/dev/twibus_gpio.c
Used in:		nut/dev/twibus_gpio.c
References Variables:	twibb_initialized	nut/dev/twibus_gpio.c

Local Function TwPut()

static int TwPut ( uint8_t octet )

Calls:	TwDelay()	nut/dev/twibus_gpio.c
Called by:	NutTwiMasterTranceive()	nut/dev/twibus_gpio.c

Local Function TwStart()

static void TwStart ( void )

Calls:	TwDelay()	nut/dev/twibus_gpio.c
Called by:	NutTwiMasterTranceive()	nut/dev/twibus_gpio.c

Local Function TwStop()

static void TwStop ( void )

Calls:	TwDelay()	nut/dev/twibus_gpio.c
Called by:	NutTwiMasterTranceive()	nut/dev/twibus_gpio.c