123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657 |
- /*#######################################################################################
- Connect ARM to MMC/SD
- Copyright (C) 2004 Ulrich Radig
- #######################################################################################*/
- #ifndef _MMC_H_
- #define _MMC_H_
- #include <avr/io.h>
- //#define SPI_Mode 1 //1 = Hardware SPI | 0 = Software SPI
- #define SPI_Mode 0
- #define MMC_Write PORTC //Port an der die MMC/SD-Karte angeschlossen ist also des SPI
- #define MMC_Read PINC
- #define MMC_Direction_REG DDRC
- #if defined (__AVR_ATmega8__)
- #define MMC_CS PC0
- #define MMC_DO PC1
- #define MMC_DI PC2
- #define MMC_CLK PC3
- #define SPI_SS 4 //Nicht Benutz muß aber definiert werden
- #endif
- //Prototypes
- extern unsigned char mmc_read_byte(void);
- extern void mmc_write_byte(unsigned char);
- extern void mmc_read_block(unsigned char *,unsigned char *,unsigned in);
- extern unsigned char mmc_init(void);
- extern unsigned char mmc_read_sector (unsigned long,unsigned char *);
- extern unsigned char mmc_write_sector (unsigned long,unsigned char *);
- extern unsigned char mmc_write_command (unsigned char *);
- extern unsigned char mmc_read_csd (unsigned char *);
- extern unsigned char mmc_read_cid (unsigned char *);
- //set MMC_Chip_Select to high (MMC/SD-Karte Inaktiv)
- #define MMC_Disable() MMC_Write|= (1<<MMC_CS);
- //set MMC_Chip_Select to low (MMC/SD-Karte Aktiv)
- #define MMC_Enable() MMC_Write&=~(1<<MMC_CS);
- #define nop() __asm__ __volatile__ ("nop" ::)
- #endif //_MMC_H_
|