85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
/*
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* Copyright (c) 2016, Dr. Ralf Schlatterbeck Open Source Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \brief This module contains PicoRV32-specific code to implement
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* SPI routines
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*
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* \author Ralf Schlatterbeck <rsc@runtux.com>.
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*
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*/
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/** \addtogroup picorv32
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* @{
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*/
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/**
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* \file
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* SPI macros
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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 "icosoc.h"
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#define SPI_RXBUF spi_rxbuf
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extern uint8_t spi_rxbuf;
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/* Write one character to SPI */
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#define SPI_WRITE(data) (spi_rxbuf = icosoc_cc2520_spi_xfer(data))
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/* Currently no fast writing without waiting for transmission to
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* terminate
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*/
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#define SPI_WRITE_FAST(data) SPI_WRITE(data)
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/* Read one character from SPI */
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#define SPI_READ(data) (data = spi_rxbuf = icosoc_cc2520_spi_xfer(0))
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/* No async operation, therefore no flush */
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#define SPI_FLUSH()
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#define SPI_WAITFORTx_BEFORE()
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#define SPI_WAITFORTx_AFTER() SPI_WAITFOREOTx()
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#define SPI_WAITFORTx_ENDED()
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#define SPI_WAITFORTxREADY()
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#define BV(x) (1<<x)
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/* Used by cc2520_init probably for disabling interrupts, don't need
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* that here.
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*/
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#define splhigh() 1
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#define splx(x) ((void)(x))
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#endif /* SPI_H_ */
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/** @} */
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