34 lines
935 B
C
34 lines
935 B
C
#ifndef _MMC_H_
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#define _MMC_H_
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#include <avr/io.h>
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#define MMC_WRITE PORTB // Port an der die MMC/SD-Karte angeschlossen ist also des SPI
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#define MMC_READ PINB
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#define MMC_REG DDRB
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#define MMC_CS PB4
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#define MMC_DO PB6
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#define MMC_DI PB5
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#define MMC_CLK PB7
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extern uint8_t mmc_read_byte(void);
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extern void mmc_write_byte(uint8_t);
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extern void mmc_read_block(uint8_t *, uint8_t *, unsigned in);
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extern uint8_t mmc_init(void);
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extern uint8_t mmc_read_sector(uint32_t, uint8_t *);
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extern uint8_t mmc_write_sector(uint32_t, uint8_t *);
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extern uint8_t mmc_write_command(uint8_t *);
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extern uint8_t mmc_read_csd(uint8_t *);
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extern uint8_t mmc_read_cid(uint8_t *);
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// set MMC_Chip_Select to high (MMC/SD-Karte Inaktiv)
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#define MMC_Disable() MMC_WRITE|= (1<<MMC_CS);
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// set MMC_Chip_Select to low (MMC/SD-Karte Aktiv)
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#define MMC_Enable() MMC_WRITE&=~(1<<MMC_CS);
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#define nop() __asm__ __volatile__ ("nop" ::)
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#endif
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