spi.h

来自「EMB91SAM7S64开发板(全套资料)」· C头文件 代码 · 共 36 行

/*----------------------------------------------------------------------------
*         ATMEL Microcontroller Software Support  -  ROUSSET  -
*----------------------------------------------------------------------------
* The software is delivered "AS IS" without warranty or condition of any
* kind, either express, implied or statutory. This includes without
* limitation any warranty or condition with respect to merchantability or
* fitness for any particular purpose, or against the infringements of
* intellectual property rights of others.
*----------------------------------------------------------------------------
* File Name           : Board.h
* Object              : AT91SAM7S Evaluation Board Features Definition File.
*
* Creation            : JPP   16/Jun/2004
*----------------------------------------------------------------------------
*/
#ifndef _SPI_H_
#define _SPI_H_

#include "Board.h"
#include "types.h"

#define SPI_0		AT91C_PA11_NPCS0    /* MCP2510 A */
#define SPI_1		AT91C_PA31_NPCS1    /* MCP2510 A */

#define SPI_CE(DEV_mun,x)		(x?((*AT91C_PIOA_SODR)|=DEV_mun):((*AT91C_PIOA_CODR)|=DEV_mun))

#define SPI_CLK(x)		(x?((*AT91C_PIOA_SODR)|=AT91C_PA14_SPCK):((*AT91C_PIOA_CODR)|=AT91C_PA14_SPCK))
#define SPI_MOSI(x)		(x?((*AT91C_PIOA_SODR)|=AT91C_PA13_MOSI):((*AT91C_PIOA_CODR)|=AT91C_PA13_MOSI))

#define SPI_MISO		( (*AT91C_PIOA_PDSR)&AT91C_PA12_MISO?1:0 )

extern void OutByte(uchar ByteVal);
extern uchar InByte(void);

#endif /* Board_h */