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SPIWrRd

void SPIWrRd( void * SrcAddr, void * DstAddr, int ByteCount );

Description

Read and Write a block of bytes from/to the SPI port.

Note for Master: the receiving device Chip Select must already be active.

Parameters

SrcAddr

Address of data to write.

DstAddr

Address to put received data.

ByteCount

Number of bytes to read/write. The maximum value is 255 bytes. This limit is not checked! The receive buffer MUST be at least as large as the number of bytes!

Return value

Master: none.
Slave: 0 = no CS signal, no received/transmitted bytes.
           1 = CS, bytes received/transmitted.

Library

SPI.LIB

See Also

SPIinit, SPIRead, SPIWrite