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