I2C bus control. More...

#include <i2c.h>

Data Fields
int(*	transfer )(i2c_bus bus, i2c_msg msgs, uint32_t msg_count)
	Transfers I2C messages. More...

int(*	set_clock )(i2c_bus *bus, unsigned long clock)
	Sets the bus clock. More...

void(*	destroy )(i2c_bus *bus)
	Destroys the bus. More...

rtems_id	mutex
	Mutex to protect the bus access.

uint16_t	default_address
	Default slave device address.

bool	ten_bit_address
	Use 10-bit addresses.

bool	use_pec
	Use SMBus PEC.

unsigned long	retries
	Transfer retry count.

rtems_interval	timeout
	Transaction timeout in ticks.

unsigned long	functionality
	Controller functionality.

Detailed Description

I2C bus control.

Field Documentation

void(* i2c_bus::destroy) (i2c_bus *bus)

Destroys the bus.

Parameters

[in] bus The bus control.

int(* i2c_bus::set_clock) (i2c_bus *bus, unsigned long clock)

Sets the bus clock.

Parameters

[in]	bus	The bus control.
[in]	clock	The desired bus clock in Hz.

Return values

0	Successful operation.
negative	Negative error number in case of an error.

int(* i2c_bus::transfer) (i2c_bus *bus, i2c_msg *msgs, uint32_t msg_count)

Transfers I2C messages.

Parameters

[in]	bus	The bus control.
[in]	msgs	The messages to transfer.
[in]	msg_count	The count of messages to transfer. It must be positive.

Return values

0	Successful operation.
negative	Negative error number in case of an error.

The documentation for this struct was generated from the following file:

/mnt/data0/chrisj/rtems/releases/rtems-release.git/4.11.3/ws-rtems/rtems-4.11.3/cpukit/dev/include/dev/i2c/i2c.h