Synchronous I2C Hardware Abstraction Layer for slave

Functions
void	i2c_slave_mode (i2c_t *obj, int enable_slave)
	Configure I2C as slave or master. More...
int	i2c_slave_receive (i2c_t *obj)
	Check to see if the I2C slave has been addressed. More...
int	i2c_slave_read (i2c_t *obj, char *data, int length)
	Read specified number of bytes from an I2C master. More...
int	i2c_slave_write (i2c_t *obj, const char *data, int length)
	Configure I2C as slave or master. More...
void	i2c_slave_address (i2c_t *obj, int idx, uint32_t address, uint32_t mask)
	Configure I2C address. More...

Detailed Description

Function Documentation

i2c_slave_mode()

void i2c_slave_mode	(	i2c_t *	obj,
		int	enable_slave
	)

Configure I2C as slave or master.

Parameters

obj	The I2C object
enable_slave	Enable i2c hardware so you can receive events with i2c_slave_receive

i2c_slave_receive()

int i2c_slave_receive

(

i2c_t *

obj

)

Check to see if the I2C slave has been addressed.

Parameters

obj	The I2C object

Returns

The status - 1 - read addresses, 2 - write to all slaves, 3 write addressed, 0 - the slave has not been addressed

i2c_slave_read()

int i2c_slave_read	(	i2c_t *	obj,
		char *	data,
		int	length
	)

Read specified number of bytes from an I2C master.

Parameters

obj	The I2C object
data	The buffer for receiving
length	Number of bytes to read

Returns

non-zero if a value is available, or zero on error

i2c_slave_write()

int i2c_slave_write	(	i2c_t *	obj,
		const char *	data,
		int	length
	)

Configure I2C as slave or master.

Parameters

obj	The I2C object
data	The buffer for sending
length	Number of bytes to write

Returns

number of bytes actually written to the master, or negative value on error.

i2c_slave_address()

void i2c_slave_address	(	i2c_t *	obj,
		int	idx,
		uint32_t	address,
		uint32_t	mask
	)

Configure I2C address.

Parameters

obj	The I2C object
idx	Currently not used
address	The address to be set (8-bit, always a read address)
mask	Currently not used