spi.h

来自「基于dsp55系列的指纹识别系统。已调试通过」· C头文件 代码 · 共 53 行

/***************************************************************************
*
*      
*      TEXAS INSTRUMENTS PROPRIETARY INFORMATION
*
*  (c) Copyright, Texas Instruments Incorporated, 2003.
*      All Rights Reserved.
*
*  Property of Texas Instruments Incorporated. Restricted Rights -
*  Use, duplication, or disclosure is subject to restrictions set
*  forth in TI's program license agreement and associated documentation.
*
*****************************************************************************
*****************************************************************************
*
* NAME:        spi.h
*
* DESCRIPTION: SPI communication definitions.
*
*   CREATED:       05/20/2002 
*   MODIFIED:      06/13/2003 
*
****************************************************************************/

#ifndef _SPI_HEADER_H
#define _SPI_HEADER_H

/* TOUT 0 and TOUT1 are configured as GPIO and are
 used for Set/Reset and Chip Select signals */
 
#define SPI_ENABLE    (*(volatile unsigned ioport *)0x1002 = 0x1000)
#define SPI_DISABLE   (*(volatile unsigned ioport *)0x1002 = 0x1002)
#define SPI_RESET     (*(volatile unsigned ioport *)0x2402 = 0x1000)
#define SPI_SET       (*(volatile unsigned ioport *)0x2402 = 0x1002)




/* function definitions */




extern unsigned char SPI_rxChar(void);
extern void SPI_txChar(unsigned char charToXmit);

extern void SPI_dummyRead(void);
extern void SPI_close(void);
extern void SPI_txReady(void);
extern void SPI_rxReady(void);

#endif /* _SPI_HEADER_H */