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83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
#ifndef _SD_MMC_H_
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#define _SD_MMC_H_
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#include "atmel_start.h"
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#include "sd_mmc_intf.h"
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#include "pdebug.h"
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typedef enum sd_mmc_mode_t
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{
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SD_MMC_MODE_SPI = 0,
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SD_MMC_MODE_MCI = 1
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}sd_mmc_mode_t;
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typedef enum sd_mmc_err_t
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{
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SD_MMC_SUCCESS = 0,
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SD_MMC_FAILURE = 1,
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SD_MMC_INIT_ONGOING = 2,
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SD_MMC_ERR_NO_CARD = 3,
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SD_MMC_ERR_UNUSABLE = 4,
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SD_MMC_ERR_SLOT = 5,
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SD_MMC_ERR_COMM = 6,
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SD_MMC_ERR_PARAM = 7,
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SD_MMC_ERR_WP = 8,
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SD_MMC_INIT_FAILURE = 9,
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SD_MMC_TIMEOUT = 10,
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} sd_mmc_err_t;
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// The card detect function can be unused, used regularly, or via interrupt.
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// SD_MMC_CD_MODE_UNUSED: The cd pin isn't used
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// SD_MMC_CD_MODE_SYNC: The pin is just checked when needed.
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// SD_MMC_CD_MODE_ASYNC: The pin's state is stored and updated via interrupt. CURRENTLY UNIMPLEMENTED
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typedef enum sd_mmc_cd_mode_t
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{
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SD_MMC_CD_MODE_UNUSED = 0,
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SD_MMC_CD_MODE_SYNC = 1,
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SD_MMC_CD_MODE_ASYNC = 2
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}sd_mmc_cd_mode_t;
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sd_mmc_err_t sd_mmc_init(void);
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sd_mmc_err_t sd_mmc_select(uint8_t slot, uint32_t clock, uint8_t bus_width, bool high_speed);
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sd_mmc_err_t sd_mmc_deselect(uint8_t slot);
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sd_mmc_err_t sd_mmc_send_command(uint8_t cmd, uint32_t arg, uint8_t crc);
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#define PARAM_ERROR(x) (x & 0b01000000)
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#define ADDR_ERROR(x) (x & 0b00100000)
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#define ERASE_SEQ_ERROR(x) (x & 0b00010000)
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#define CRC_ERROR(x) (x & 0b00001000)
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#define ILLEGAL_CMD(x) (x & 0b00000100)
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#define ERASE_RESET(x) (x & 0b00000010)
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#define IN_IDLE(x) (x & 0b00000001)
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#define SD_MMC_CD_MODE SD_MMC_CD_MODE_SYNC
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#ifndef SD_MMC_CD_MODE
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#define SD_MMC_CD_MODE SD_MMC_MODE_UNUSED
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#endif
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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 0x000001AA
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#define CMD8_CRC 0x86
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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 UNUSED(v) (void)(v)
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#define CMD_VER(X) ((X >> 4) & 0xF0)
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#define VOL_ACC(X) (X & 0x1F)
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#define VOLTAGE_ACC_27_33 0b00000001
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#define VOLTAGE_ACC_LOW 0b00000010
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#define VOLTAGE_ACC_RES1 0b00000100
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#define VOLTAGE_ACC_RES2 0b00001000
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#endif
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