mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 16:29:34 +00:00
107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
|
|
/*
|
|
Copyright 2006, Freie Universitaet Berlin. All rights reserved.
|
|
|
|
These sources were developed at the Freie Universität Berlin, Computer
|
|
Systems and Telematics group.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are
|
|
met:
|
|
|
|
- Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
- Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
- Neither the name of Freie Universitaet Berlin (FUB) nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
This software is provided by FUB and the contributors on an "as is"
|
|
basis, without any representations or warranties of any kind, express
|
|
or implied including, but not limited to, representations or
|
|
warranties of non-infringement, merchantability or fitness for a
|
|
particular purpose. In no event shall FUB or contributors be liable
|
|
for any direct, indirect, incidental, special, exemplary, or
|
|
consequential damages (including, but not limited to, procurement of
|
|
substitute goods or services; loss of use, data, or profits; or
|
|
business interruption) however caused and on any theory of liability,
|
|
whether in contract, strict liability, or tort (including negligence
|
|
or otherwise) arising in any way out of the use of this software, even
|
|
if advised of the possibility of such damage.
|
|
|
|
This implementation was developed by the CST group at the FUB.
|
|
|
|
For documentation and questions please use the web site
|
|
http://scatterweb.mi.fu-berlin.de and the mailinglist
|
|
scatterweb@lists.spline.inf.fu-berlin.de (subscription via the Website).
|
|
Berlin, 2006
|
|
*/
|
|
|
|
/**
|
|
* @defgroup libsdspi Serial Peripheral Interface
|
|
* @ingroup libsd
|
|
*/
|
|
|
|
/**
|
|
* @file ScatterWeb.Spi.h
|
|
* @ingroup libsdspi
|
|
* @brief Serial Peripheral Interface
|
|
*
|
|
* @author Michael Baar <baar@inf.fu-berlin.de>
|
|
* @date 2006
|
|
* @version 1.0
|
|
*/
|
|
|
|
#ifndef SPI_H_
|
|
#define SPI_H_
|
|
|
|
#ifndef SPI_DMA_READ
|
|
#define SPI_DMA_READ 0
|
|
#endif
|
|
#ifndef SPI_DMA_WRITE
|
|
#define SPI_DMA_WRITE 0
|
|
#endif
|
|
#ifndef SPI_WRITE
|
|
#define SPI_WRITE 1
|
|
#endif
|
|
|
|
void spi_init(void);
|
|
|
|
/// Configure UART1 for SPI mode
|
|
void spi_enable(void);
|
|
|
|
/// Receive one byte from SPI
|
|
uint8_t spi_rx(void);
|
|
|
|
/// Send one byte to SPI
|
|
void spi_tx(const uint8_t c);
|
|
|
|
/// Read a number of bytes from SPI
|
|
void spi_read(void *pDestination, const uint16_t size, const bool incDest);
|
|
|
|
#if SPI_DMA_WRITE
|
|
extern uint8_t spi_dma_lock;
|
|
#endif
|
|
#if SPI_DMA_READ || SPI_DMA_WRITE
|
|
void spi_dma_wait();
|
|
#endif
|
|
|
|
#if SPI_WRITE
|
|
/// Write a number of bytes to SPI
|
|
void spi_write(const void *pSource,
|
|
const uint16_t size,
|
|
const uint8_t startToken, const bool incSource);
|
|
#endif
|
|
|
|
/// Wait a number of clock cycles
|
|
void spi_idle(const uint16_t clocks);
|
|
|
|
/// Read chars until token is received
|
|
bool spi_wait_token(const uint8_t token, const uint16_t timeout);
|
|
|
|
#endif /*SPI_H_ */
|