#include <arch/cm3.h>
#include <dev/irqreg.h>
#include <sys/event.h>
#include <sys/atom.h>
#include <sys/timer.h>
#include <sys/thread.h>
#include <sys/heap.h>
#include <cfg/twi.h>
#include <dev/twif.h>
#include <stdlib.h>
#include <string.h>
#include <arch/cm3/stm/stm32xxxx.h>

Include dependency graph for stm32_twi.c:

Defines
#define	TPRINTF(...)
#define	DBGP1_INIT()
#define	DBGP1(v)
#define	DBGP2_INIT()
#define	DBGP2(v)
#define	MODE_FLAG_Mask ((uint32_t)0x00FFFFFF)
#define	CR1_CLEAR_Mask ((uint16_t)0xFBF5)
#define	CCR_CCR_Set ((uint16_t)0x0FFF)
#define	CCR_FS_Set ((uint16_t)0x8000)
#define	MODE_READ 1
#define	MODE_WRITE 0
#define	ENABLE 1
#define	DISABLE 0
#define	ERROR 0
#define	SUCCESS 1
#define	I2C_NACK_STOP(x)
#define	I2C_ENA_ACK(x) x->CR1 \|= I2C_CR1_ACK
#define	I2C_RESTART(x) x->CR1 \|= I2C_CR1_START
#define	I2C_STOP(x) x->CR1 \|= I2C_CR1_STOP
#define	I2C_DIS_EVT(x) x->CR2 &= (uint16_t)~I2C_CR2_ITEVTEN
#define	I2C_DIS_BUF(x) x->CR2 &= (uint16_t)~I2C_CR2_ITBUFEN
#define	I2C_ENA_BUF(x) x->CR2 \|= I2C_CR2_ITBUFEN
Functions
void	I2C_DMA_Enable (I2C_TypeDef *I2Cx)
void	I2C_DMA_Disable (I2C_TypeDef *I2Cx)
uint8_t	I2C_Is_Busy (I2C_TypeDef *I2Cx)
void	TwEventIrq (void *arg)
void	TwErrorIrq (void *arg)
void	NutTwiSoftReset (NUTTWIBUS *bus)
	Reset the I2C peripheral by issueing soft-reset.
int	TwWaitForFlag (volatile uint16_t *reg, uint16_t mask, uint16_t flag)
int	NutTwiStartRolling (NUTTWIBUS *bus, uint32_t tmo)
	Set START condition and wait for its appearance on the bus.
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	NutTwiSetSpeed (NUTTWIBUS *bus, uint32_t speed)
	Set Speed of I2C Interface.
int	NutTwiGetSpeed (NUTTWIBUS *bus)
	Request Current Speed of I2C Interface.
int	NutTwiIOCtl (NUTTWIBUS bus, int req, void conf)
	Perform TWI control functions.
int	NutRegisterTwiBus (NUTTWIBUS *bus, uint8_t sla)
	Initialize TWI interface.

Define Documentation

#define TPRINTF ( ... )

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

#define DBGP1_INIT ( )

Referenced by NutRegisterTwiBus().

#define DBGP1 ( v )

Referenced by TwEventIrq().

#define DBGP2_INIT ( )

Referenced by NutRegisterTwiBus().

#define DBGP2 ( v )

Referenced by TwEventIrq().

#define MODE_FLAG_Mask ((uint32_t)0x00FFFFFF)

#define CR1_CLEAR_Mask ((uint16_t)0xFBF5)

#define CCR_CCR_Set ((uint16_t)0x0FFF)

#define CCR_FS_Set ((uint16_t)0x8000)

#define MODE_READ 1

Referenced by NutTwiMasterTranceive().

#define MODE_WRITE 0

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

#define ENABLE 1

#define DISABLE 0

#define ERROR 0

#define SUCCESS 1

Referenced by RCC_WaitForHSEStartUp().

#define I2C_NACK_STOP ( x )

Value:

{ \
        x->CR1 &= (uint16_t)~I2C_CR1_ACK; \
        x->CR1 |= I2C_CR1_STOP; \
    }

#define I2C_ENA_ACK ( x ) x->CR1 |= I2C_CR1_ACK

#define I2C_RESTART ( x ) x->CR1 |= I2C_CR1_START

#define I2C_STOP ( x ) x->CR1 |= I2C_CR1_STOP

Referenced by TwErrorIrq().

#define I2C_DIS_EVT ( x ) x->CR2 &= (uint16_t)~I2C_CR2_ITEVTEN

#define I2C_DIS_BUF ( x ) x->CR2 &= (uint16_t)~I2C_CR2_ITBUFEN

#define I2C_ENA_BUF ( x ) x->CR2 |= I2C_CR2_ITBUFEN

Function Documentation

void I2C_DMA_Enable ( I2C_TypeDef * I2Cx ) [inline]

References I2C_TypeDef::CR2, and I2C_CR2_DMAEN.

void I2C_DMA_Disable ( I2C_TypeDef * I2Cx ) [inline]

References I2C_TypeDef::CR2, and I2C_CR2_DMAEN.

uint8_t I2C_Is_Busy ( I2C_TypeDef * I2Cx ) [inline]

References I2C_SR2_BUSY, and I2C_TypeDef::SR2.

Referenced by NutTwiStartRolling().

void TwEventIrq ( void * arg )

References _NUTTWIBUS::bus_base, _NUTTWIBUS::bus_icb, DBGP1, DBGP2, I2C_TypeDef::SR1, and I2C_TypeDef::SR2.

Referenced by NutRegisterTwiBus().

void TwErrorIrq ( void * arg )

References _NUTTWIBUS::bus_base, _NUTTWIBUS::bus_icb, I2C_SR1_AF, I2C_SR1_ARLO, I2C_SR1_BERR, I2C_SR1_OVR, I2C_SR1_TIMEOUT, I2C_STOP, I2C_TypeDef::SR1, _NUTTWIICB::tw_mm_err, TWERR_ARBLOST, TWERR_BUS, TWERR_OVRE, TWERR_SLA_NACK, and TWERR_TIMEOUT.

Referenced by NutRegisterTwiBus().

void NutTwiSoftReset ( NUTTWIBUS * bus )

Reset the I2C peripheral by issueing soft-reset.

References _NUTTWIBUS::bus_base, I2C_TypeDef::CR1, and I2C_CR1_SWRST.

int TwWaitForFlag	(	volatile uint16_t *	reg,
		uint16_t	mask,
		uint16_t	flag
	)

References TWERR_SPCTOUT.

Referenced by NutTwiStartRolling().

int NutTwiStartRolling	(	NUTTWIBUS *	bus,
		uint32_t	tmo
	)

Set START condition and wait for its appearance on the bus.

References _NUTTWIBUS::bus_base, I2C_TypeDef::CR1, I2C_TypeDef::CR2, I2C_CR1_ACK, I2C_CR1_PE, I2C_CR1_START, I2C_CR2_ITBUFEN, I2C_CR2_ITERREN, I2C_CR2_ITEVTEN, I2C_Is_Busy(), NutSleep(), TWERR_TIMEOUT, and TwWaitForFlag().

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

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int NutTwiSetSpeed	(	NUTTWIBUS *	bus,
		uint32_t	speed
	)

Set Speed of I2C Interface.

Setup Interface Speed

References _NUTTWIBUS::bus_base, I2C_TypeDef::CCR, I2C_TypeDef::CR1, I2C_CCR_CCR, I2C_CCR_DUTY, I2C_CCR_FS, I2C_CR1_PE, NutClockGet, rc, and I2C_TypeDef::TRISE.

int NutTwiGetSpeed ( NUTTWIBUS * bus )

Request Current Speed of I2C Interface.

References _NUTTWIBUS::bus_base, I2C_TypeDef::CCR, I2C_CCR_CCR, I2C_CCR_FS, NutClockGet, and rc.

Defines

Functions

Define Documentation

Function Documentation