Initial Arduino IDE based on Processing.

build/shared/lib/avrlib/spi.h

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+/*! \file spi.h \brief SPI interface driver. */
+//*****************************************************************************
+//
+// File Name	: 'spi.h'
+// Title		: SPI interface driver
+// Author		: Pascal Stang - Copyright (C) 2000-2002
+// Created		: 11/22/2000
+// Revised		: 06/06/2002
+// Version		: 0.6
+// Target MCU	: Atmel AVR series
+// Editor Tabs	: 4
+//
+// NOTE: This code is currently below version 1.0, and therefore is considered
+// to be lacking in some functionality or documentation, or may not be fully
+// tested.  Nonetheless, you can expect most functions to work.
+//
+// This code is distributed under the GNU Public License
+//		which can be found at http://www.gnu.org/licenses/gpl.txt
+//
+//*****************************************************************************
+
+#ifndef SPI_H
+#define SPI_H
+
+#include "global.h"
+
+// function prototypes
+
+// SPI interface initializer
+void spiInit(void);
+
+// spiSendByte(u08 data) waits until the SPI interface is ready
+// and then sends a single byte over the SPI port.  This command
+// does not receive anything.
+void spiSendByte(u08 data);
+
+// spiTransferByte(u08 data) waits until the SPI interface is ready
+// and then sends a single byte over the SPI port.  The function also
+// returns the byte that was received during transmission.
+u08 spiTransferByte(u08 data);
+
+// spiTransferWord(u08 data) works just like spiTransferByte but
+// operates on a whole word (16-bits of data).
+u16 spiTransferWord(u16 data);
+
+#endif