Functions
void	i2c_transfer_asynch (i2c_t obj, const void tx, size_t tx_length, void *rx, size_t rx_length, uint32_t address, uint32_t stop, uint32_t handler, uint32_t event, DMAUsage hint)
	Start I2C asynchronous transfer.
uint32_t	i2c_irq_handler_asynch (i2c_t *obj)
	The asynchronous IRQ handler.
uint8_t	i2c_active (i2c_t *obj)
	Attempts to determine if the I2C peripheral is already in use.
void	i2c_abort_asynch (i2c_t *obj)
	Abort asynchronous transfer.

Function Documentation

void i2c_abort_asynch ( i2c_t * obj )

Abort asynchronous transfer.

This function does not perform any check - that should happen in upper layers.

Parameters:

obj	The I2C object

uint8_t i2c_active ( i2c_t * obj )

Attempts to determine if the I2C peripheral is already in use.

Parameters:

obj	The I2C object

uint32_t i2c_irq_handler_asynch ( i2c_t * obj )

The asynchronous IRQ handler.

Parameters:

obj	The I2C object which holds the transfer information

Returns:: Event flags if a transfer termination condition was met, otherwise return 0.

Start I2C asynchronous transfer.

Parameters:

obj	The I2C object
tx	The transmit buffer
tx_length	The number of bytes to transmit
rx	The receive buffer
rx_length	The number of bytes to receive
address	The address to be set - 7bit or 9bit
stop	If true, stop will be generated after the transfer is done
handler	The I2C IRQ handler to be set
event	Event mask for the transfer. See I2C Events Macros
hint	DMA hint usage

Asynchronous I2C Hardware Abstraction Layer
[Hal]