2.3-InternetRadio/nutos/nut/include/dev/spibus_at91.h

#ifndef _DEV_SPIBUS_AT91_H_
#define _DEV_SPIBUS_AT91_H_
/*
 * Copyright (C) 2008-2009 by egnite GmbH
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 * modification, are permitted provided that the following conditions
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 *
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 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
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 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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/*!
 * \file dev/spibus_at91.h
 * \brief AT91 specific SPI bus declarations.
 *
 * \verbatim
 * $Id: spibus_at91.h 4473 2012-08-20 15:12:45Z haraldkipp $
 * \endverbatim
 */

#include <dev/spibus.h>

typedef struct _AT91SPIREG AT91SPIREG;

struct _AT91SPIREG {
    uint32_t at91spi_mr;
    uint32_t at91spi_csr;
};

extern NUTSPIBUS spiBus0At91;
extern NUTSPIBUS spiBus1At91;

extern int At91Spi0ChipSelect(uint_fast8_t cs, uint_fast8_t hi);
extern void At91SpiBus0Interrupt(void *arg);

extern int At91Spi1ChipSelect(uint_fast8_t cs, uint_fast8_t hi);
extern void At91SpiBus1Interrupt(void *arg);

extern int At91SpiSetup(NUTSPINODE * node);
extern int At91SpiBusNodeInit(NUTSPINODE * node);
extern int At91SpiBusTransfer(NUTSPINODE * node, const void *txbuf, void *rxbuf, int xlen);
extern int At91SpiBusDblBufTransfer(NUTSPINODE * node, const void *txbuf, void *rxbuf, int xlen);
extern int At91SpiBusPollTransfer(NUTSPINODE * node, const void *txbuf, void *rxbuf, int xlen);
extern int At91SpiBusWait(NUTSPINODE * node, uint32_t tmo);

#endif