Calibre UK UCA93 manual Int RdData, Int NoBytesToTransmit, Int Timeout

		CALIBRE
	This is the number of times the Adapter is to try to send the address.
Parameters returned	None.
Prerequisites	Adapter must be configured using setup.
Functional description	This function causes the Adapter to read a block of data via the I2C bus.

3.3.13.GetBlockData

Function specification	int GetBlockData(void)
Parameters are:	None
Parameters returned	int RdData.
Prerequisites	Adapter must be configured using Setup. The block read function MUST have
	been called and the BlockReadStatus should be called to determine if the
	transfer has been completed
Functional description	Read data from the driver buffers. MAXIMUM DATA SIZE 2048 bytes.

3.3.14.BlockReadStatus

Function specification	int BlockReadStatus (void))
Parameters are:	None
Parameters returned	int TransferStatus.
	Returns 0 if the transfer has not been completed.
	Returns the I2C Bus status if the transfer is completed.
	Returns 900AH if the transfer time out.
Prerequisites	Adapter must be configured using Setup. The transfer must be started using
	the BlockRead function.
Functional description	Returns the current status of the BlockWrite transfer NOTE this function will
	time out if the block is not sent in NoBytes / 100 seconds (or 1 second which
	ever is the greater).

3.3.15.BlockSlaveTransmittter

Function specification	int BlockSlaveTransmitter(int NoBytesToTransmit, int Timeout)
Parameters are:	int NoBytesToTransmit
	The number of bytes to be sent which MUST be pre loaded into the driver
	buffers. The maximum size of this buffer is 2048 exceeding this WILL cause
	the data to be corrupted.
	Int Timeout
	If the transfer is not completed within Timeout seconds the
	BlockSlaveTansmitStatus will return a Timeout error.
Parameters returned	Returns an unused integer.
Prerequisites	Adapter must be configured using Setup. The data MUST be loaded into the
	driver buffers PRIOR to calling this functions (see SetBlockData).
Functional description	This function causes the Adapter to respond to I2C master requests for data.
	This function supports transfers where the master sends WordAddress pointers
	to data locations within the transfer block. If the master does not request to
	read data from the beginning of the data block the Adapter will remove the data
	from the buffer until the byte requested by the master is reached it will then
	transmit the data.
	Should the master exceed the number of bytes available the Adapter will
	honour all requests for data and the overflow will be reported see
	BlockSlaveTransmitterStatus.
	This function allows the user to emulate simple slave devices e.g. EEPROM
	BUT once the master has completed the transfer the Adapter will NOT respond
	to any further requests for data until the BlockSlaveTransmitter is called again.

Issue 1.0	Page 11
01/07/03