U2C_RESULT U2C_SpiReadWrite (
            HANDLE hDevice,
             BYTE* pOutBuffer,
             BYTE* pInBuffer,
             unsigned short Length
);

The U2C_SpiReadWrite function shifts out (writes) and in (reads) a stream of bytes to/from the SPI slave device.

Parameters:

	hDevice	Handle to the U2C-12 device.
	pOutBuffer	Pointer to the buffer containing the data to be shifted out to the SPI slave device.
	pInBuffer	Pointer to the buffer that receives the data shifted in from the SPI slave device.
	Length	Number of bytes to be transferred via SPI bus.

Return values:

	U2C_SUCCESS	The data was successfully transmitted via SPI bus.
	U2C_HARDWARE_NOT_FOUND	U2C-12 device referenced by hDevice handle was not found.