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Get SD card working in SPI

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This commit is contained in:
Byron Lathi
2023-07-23 14:55:14 -07:00
parent 6a1a76db35
commit 5ca5fca29b
23 changed files with 1257 additions and 1931 deletions
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80
sw/bootloader/devices/sd_card.h
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@@ -3,16 +3,76 @@
#include <stdint.h>
void sd_init();
uint16_t sd_get_rca();
uint16_t sd_select_card(uint16_t rca);
uint16_t sd_get_status(uint16_t rca);
void sd_readblock(uint32_t addr, void* buf);
// command definitions
#define CMD0 0
#define CMD0_ARG 0x00000000
#define CMD0_CRC 0x94
#define CMD8 8
#define CMD8_ARG 0x0000001AA
#define CMD8_CRC 0x86
#define CMD9 9
#define CMD9_ARG 0x00000000
#define CMD9_CRC 0x00
#define CMD10 9
#define CMD10_ARG 0x00000000
#define CMD10_CRC 0x00
#define CMD13 13
#define CMD13_ARG 0x00000000
#define CMD13_CRC 0x00
#define CMD17 17
#define CMD17_CRC 0x00
#define CMD24 24
#define CMD24_CRC 0x00
#define CMD55 55
#define CMD55_ARG 0x00000000
#define CMD55_CRC 0x00
#define CMD58 58
#define CMD58_ARG 0x00000000
#define CMD58_CRC 0x00
#define ACMD41 41
#define ACMD41_ARG 0x40000000
#define ACMD41_CRC 0x00
void sd_card_command(uint32_t arg, uint8_t cmd);
#define SD_IN_IDLE_STATE 0x01
#define SD_READY 0x00
#define SD_R1_NO_ERROR(X) X < 0x02
void sd_card_resp(uint32_t* resp);
uint8_t sd_card_read_byte();
void sd_card_wait_for_data();
#define R3_BYTES 4
#define R7_BYTES 4
#endif
#define CMD0_MAX_ATTEMPTS 255
#define CMD55_MAX_ATTEMPTS 255
#define SD_ERROR 1
#define SD_SUCCESS 0
#define SD_MAX_READ_ATTEMPTS 1563
#define SD_READ_START_TOKEN 0xFE
#define SD_INIT_CYCLES 80
#define SD_START_TOKEN 0xFE
#define SD_ERROR_TOKEN 0x00
#define SD_DATA_ACCEPTED 0x05
#define SD_DATA_REJECTED_CRC 0x0B
#define SD_DATA_REJECTED_WRITE 0x0D
#define SD_BLOCK_LEN 512
// SD functions
uint8_t SD_init();
void SD_powerUpSeq();
void SD_command(uint8_t cmd, uint32_t arg, uint8_t crc);
uint8_t SD_readRes1();
void SD_readRes2(uint8_t *res);
void SD_readRes3(uint8_t *res);
void SD_readRes7(uint8_t *res);
void SD_readBytes(uint8_t *res, uint8_t n);
uint8_t SD_goIdleState();
void SD_sendIfCond(uint8_t *res);
void SD_sendStatus(uint8_t *res);
void SD_readOCR(uint8_t *res);
uint8_t SD_sendApp();
uint8_t SD_sendOpCond();
uint8_t SD_readSingleBlock(uint32_t addr, uint8_t *buf, uint8_t *error);
uint8_t SD_writeSingleBlock(uint32_t addr, uint8_t *buf, uint8_t *res);
#endif