sd.h

基于ATmega64的MP3程序

//ICC-AVR application builder : 2005-11-12 17:11:59
// Target : M16
// Crystal: 8.0000Mhz
// copyright:鲁军波(endylu)
// www.shop34612283.taobao.com
// www.adembed.com

#ifndef SD_H
#define SD_H

#define MSTR 4 
#define SPR0 0 
#define SPR1 1 
#define SPE 6 
#define SPI2X 0 
#define SPIF 7 

#define SD_Write PORTB 
#define SD_Direction_REG DDRB 

#define SPI_DI 6 
#define SPI_DO 5 
#define SPI_Clock 7 
#define SD_Chip_Select 4 
#define SPI_SS 4 

#define nop()         asm("nop") 
//set MMC_Chip_Select to high (MMC/SD-Karte Inaktiv) 
#define SD_Disable() SD_Write|=(1<<SD_Chip_Select); 
//#define SD_Disable() SD_Write&=~(1<<SD_Chip_Select);

//set MMC_Chip_Select to low (MMC/SD-Karte Aktiv) 
#define SD_Enable() SD_Write&=~(1<<SD_Chip_Select); 

     


void Write_Byte_SD(char Byte);
uint8 Read_Byte_SD(void);
uint8 Write_Command_SD(uint8 CMD,uint32 address);

uint8 SDInit(void);
uint8 SD_set_length(uint16 length);
uint8 SD_start_read(uint32 addr);
void SD_get_date(uint8 *Buffer,uint16 Number);
uint8 SD_read_sector2(uint32 addr,uint8*Buffer,uint16 Bytes);
uint8 Write_firstCommand(void);
unsigned char SD_write_sector(unsigned long addr,unsigned char *Buffer);

#endif