80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
#ifndef _SD_CARD_H
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#define _SD_CARD_H
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#include <stdint.h>
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// command definitions
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#define CMD0 0
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#define CMD0_ARG 0x00000000
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#define CMD0_CRC 0x94
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#define CMD8 8
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#define CMD8_ARG 0x0000001AA
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#define CMD8_CRC 0x86
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#define CMD9 9
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#define CMD9_ARG 0x00000000
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#define CMD9_CRC 0x00
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#define CMD10 9
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#define CMD10_ARG 0x00000000
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#define CMD10_CRC 0x00
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#define CMD13 13
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#define CMD13_ARG 0x00000000
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#define CMD13_CRC 0x00
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#define CMD17 17
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#define CMD17_CRC 0x00
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#define CMD24 24
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#define CMD24_CRC 0x00
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#define CMD55 55
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#define CMD55_ARG 0x00000000
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#define CMD55_CRC 0x00
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#define CMD58 58
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#define CMD58_ARG 0x00000000
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#define CMD58_CRC 0x00
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#define ACMD41 41
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#define ACMD41_ARG 0x40000000
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#define ACMD41_CRC 0x00
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#define SD_IN_IDLE_STATE 0x01
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#define SD_READY 0x00
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#define SD_R1_NO_ERROR(X) X < 0x02
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#define R3_BYTES 4
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#define R7_BYTES 4
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#define CMD0_MAX_ATTEMPTS 255
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#define CMD55_MAX_ATTEMPTS 255
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#define SD_ERROR 1
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#define SD_SUCCESS 0
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#define SD_MAX_READ_ATTEMPTS 1563
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#define SD_READ_START_TOKEN 0xFE
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#define SD_INIT_CYCLES 80
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#define SD_START_TOKEN 0xFE
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#define SD_ERROR_TOKEN 0x00
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#define SD_DATA_ACCEPTED 0x05
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#define SD_DATA_REJECTED_CRC 0x0B
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#define SD_DATA_REJECTED_WRITE 0x0D
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#define SD_BLOCK_LEN 512
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// SD functions
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uint8_t SD_init();
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void SD_powerUpSeq();
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void SD_command(uint8_t cmd, uint32_t arg, uint8_t crc);
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uint8_t SD_readRes1();
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void SD_readRes2(uint8_t *res);
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void SD_readRes3(uint8_t *res);
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void SD_readRes7(uint8_t *res);
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void SD_readBytes(uint8_t *res, uint8_t n);
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uint8_t SD_goIdleState();
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void SD_sendIfCond(uint8_t *res);
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void SD_sendStatus(uint8_t *res);
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void SD_readOCR(uint8_t *res);
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uint8_t SD_sendApp();
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uint8_t SD_sendOpCond();
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uint8_t SD_readSingleBlock(uint32_t addr, uint8_t *buf, uint8_t *error);
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uint8_t SD_writeSingleBlock(uint32_t addr, uint8_t *buf, uint8_t *res);
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uint8_t res1_cmd(uint8_t cmd, uint32_t arg, uint8_t crc);
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#endif |