i2c.c File Reference

#include "i2c.h"
#include "dma.h"
#include "systick.h"
#include "stm32f4xx_i2c.h"
#include "stm32f4xx_dma.h"
#include <boards.h>

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Macros
#define	MAX_I2C_TIME   300
	Reset an I2C bus. More...

Enumerations
enum	I2C_Dir { TX = 0, RX = 1, TXREG = 2 }

Functions
static void	delay_10us ()
void	i2c_lowLevel_deinit (const i2c_dev *dev)
	DeInitializes peripherals used by the I2C driver. More...
static void	i2c_lowLevel_init (const i2c_dev *dev)
	Initializes peripherals used by the I2C driver. More...
void	i2c_init (const i2c_dev *dev, uint16_t address, uint32_t speed)
void	i2c_deinit (const i2c_dev *dev)
	DeInitializes peripherals used by the I2C driver. More...
static void	ev_handler (const i2c_dev *dev, bool err)
void	I2C1_EV_IRQHandler ()
void	I2C1_ER_IRQHandler ()
void	I2C2_EV_IRQHandler ()
void	I2C2_ER_IRQHandler ()
void	I2C3_EV_IRQHandler ()
void	I2C3_ER_IRQHandler ()
void	i2c_master_release_bus (const i2c_dev *dev)
bool	i2c_bus_reset (const i2c_dev *dev)

Variables
uint32_t	i2c_bit_time =4

Macro Definition Documentation

MAX_I2C_TIME

#define MAX_I2C_TIME   300

Reset an I2C bus.

Reset is accomplished by clocking out pulses until any hung slaves release SDA and SCL, then generating a START condition, then a STOP condition.

Parameters

dev	I2C device

Definition at line 269 of file i2c.c.

Referenced by i2c_bus_reset().

Enumeration Type Documentation

I2C_Dir

enum I2C_Dir

Enumerator
TX
RX
TXREG

Definition at line 74 of file i2c.c.

Function Documentation

delay_10us()

static void delay_10us ( )

static

Definition at line 76 of file i2c.c.

Referenced by i2c_bus_reset().

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ev_handler()

static void ev_handler ( const i2c_dev *  dev, bool  err  )

static

Definition at line 204 of file i2c.c.

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I2C1_ER_IRQHandler()

void I2C1_ER_IRQHandler

(

)

Referenced by ev_handler().

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I2C1_EV_IRQHandler()

void I2C1_EV_IRQHandler

(

)

Referenced by ev_handler().

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I2C2_ER_IRQHandler()

void I2C2_ER_IRQHandler

(

)

Referenced by ev_handler().

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I2C2_EV_IRQHandler()

void I2C2_EV_IRQHandler

(

)

Referenced by ev_handler().

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I2C3_ER_IRQHandler()

void I2C3_ER_IRQHandler

(

)

Referenced by ev_handler().

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I2C3_EV_IRQHandler()

void I2C3_EV_IRQHandler

(

)

Referenced by ev_handler().

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i2c_bus_reset()

bool i2c_bus_reset

(

const i2c_dev *

dev

)

Definition at line 271 of file i2c.c.

Referenced by F4Light::I2CDevice::_do_bus_reset().

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i2c_deinit()

void i2c_deinit

(

const i2c_dev *

dev

)

DeInitializes peripherals used by the I2C driver.

Parameters

None

Return values

None

Definition at line 199 of file i2c.c.

Referenced by F4Light::I2CDevice::_do_bus_reset().

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i2c_init()

void i2c_init	(	const i2c_dev *	dev,
		uint16_t	address,
		uint32_t	speed
	)

Definition at line 166 of file i2c.c.

Referenced by F4Light::I2CDevice::init(), read_calibration_data(), and setup().

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i2c_lowLevel_deinit()

void i2c_lowLevel_deinit

(

const i2c_dev *

dev

)

DeInitializes peripherals used by the I2C driver.

Parameters

None

Return values

None

< GPIO configuration

< Configure I2C pins: SCL

< Configure I2C pins: SDA

Definition at line 87 of file i2c.c.

Referenced by i2c_deinit().

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i2c_lowLevel_init()

static void i2c_lowLevel_init ( const i2c_dev *  dev )

inlinestatic

Initializes peripherals used by the I2C driver.

Definition at line 121 of file i2c.c.

Referenced by i2c_init().

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i2c_master_release_bus()

void i2c_master_release_bus

(

const i2c_dev *

dev

)

Definition at line 248 of file i2c.c.

Referenced by i2c_bus_reset().

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Variable Documentation

i2c_bit_time

uint32_t i2c_bit_time =4

Definition at line 80 of file i2c.c.

Referenced by i2c_init(), F4Light::I2CDevice::i2c_read(), and F4Light::I2CDevice::i2c_write().