spi.h

LPC2148 通过 SPI 口 读写 AT26DF081 EEPROM的源程序

/*****************************************************************************
 *   spi.h:  Header file for Philips LPC214x Family Microprocessors
 *
 *   Copyright(C) 2006, Philips Semiconductor
 *   All rights reserved.
 *
 *   History
 *   2005.10.01  ver 1.00    Prelimnary version, first Release
 *
******************************************************************************/
#ifndef __SPI_H__
#define __SPI_H__

/* this flag is to test SPI in either interrupt mode or polling */


/* SPI read and write buffer size */
#define BUFSIZE		10

/* Delay count after each write */


#define SPI0_INT_FLAG	0x01

/* SPI select pin */
#define SPI0_SEL	0x00000080


#define SPI0_ABORT	0x01		/* below two are SPI0 interrupt */
#define SPI0_MODE_FAULT	0x02
#define SPI0_OVERRUN	0x04
#define SPI0_COL	0x08
#define SPI0_TX_DONE	0x10

#define ABRT		1 << 3		/* SPI0 interrupt status */
#define MODF		1 << 4
#define ROVR		1 << 5
#define WCOL		1 << 6
#define SPIF		1 << 7



/* SPI 0 PCR register */
#define SPI0_BE		0x00000004
#define SPI0_CPHA	0x00000008
#define SPI0_CPOL	0x00000010
#define SPI0_MSTR	0x00000020
#define SPI0_LSBF	0x00000040
#define SPI0_SPIE	0x00000080


 

extern uint32 SPIInit( void );
extern void SPISend( uint8 *Buf, uint32 Length );
extern void SPIReceive( uint8 *Buf, uint32 Length );
extern uint8 SPIReceiveuint8( void );
extern void writenable(void);
extern void writebyte(uint32 addr,uint8 data);
extern void erase4k(uint32 addr);
extern void unpsec(uint32 addr);
extern uint8 readbyte(uint32 addr);
extern void wait(void);
extern uint8 readstatus(void);
#endif  /* __SPI_H__ */
/*****************************************************************************
**                            End Of File
******************************************************************************/