sd_mmc_spi.h

基于STM32的 模拟时序

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef _SD_MMC_SPI_H
#define _SD_MMC_SPI_H


/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/

#define SD_MMC_SPI_CS                  GPIOA
#define RCC_APB2Periph_SD_MMC_SPI_CS   RCC_APB2Periph_GPIOA
#define SD_MMC_SPI_CS_Pin_CS           GPIO_Pin_4 

#define SD_MMC_SPI_POWER                  GPIOC
#define RCC_APB2Periph_SD_MMC_SPI_POWER   RCC_APB2Periph_GPIOC
#define SD_MMC_SPI_POWER_Pin           GPIO_Pin_11 




/* CMD0: response R1 */
#define CMD_GO_IDLE_STATE 0x00
/* CMD1: response R1 */
#define CMD_SEND_OP_COND 0x01
/* CMD9: response R1 */
#define CMD_SEND_CSD 0x09
/* CMD10: response R1 */
#define CMD_SEND_CID 0x0a
/* CMD12: response R1 */
#define CMD_STOP_TRANSMISSION 0x0c
/* CMD13: response R2 */
#define CMD_SEND_STATUS 0x0d
/* CMD16: arg0[31:0]: block length, response R1 */
#define CMD_SET_BLOCKLEN 0x10
/* CMD17: arg0[31:0]: data address, response R1 */
#define CMD_READ_SINGLE_BLOCK 0x11
/* CMD18: arg0[31:0]: data address, response R1 */
#define CMD_READ_MULTIPLE_BLOCK 0x12
/* CMD24: arg0[31:0]: data address, response R1 */
#define CMD_WRITE_SINGLE_BLOCK 0x18
/* CMD25: arg0[31:0]: data address, response R1 */
#define CMD_WRITE_MULTIPLE_BLOCK 0x19
/* CMD27: response R1 */
#define CMD_PROGRAM_CSD 0x1b
/* CMD28: arg0[31:0]: data address, response R1b */
#define CMD_SET_WRITE_PROT 0x1c
/* CMD29: arg0[31:0]: data address, response R1b */
#define CMD_CLR_WRITE_PROT 0x1d
/* CMD30: arg0[31:0]: write protect data address, response R1 */
#define CMD_SEND_WRITE_PROT 0x1e
/* CMD32: arg0[31:0]: data address, response R1 */
#define CMD_TAG_SECTOR_START 0x20
/* CMD33: arg0[31:0]: data address, response R1 */
#define CMD_TAG_SECTOR_END 0x21
/* CMD34: arg0[31:0]: data address, response R1 */
#define CMD_UNTAG_SECTOR 0x22
/* CMD35: arg0[31:0]: data address, response R1 */
#define CMD_TAG_ERASE_GROUP_START 0x23
/* CMD36: arg0[31:0]: data address, response R1 */
#define CMD_TAG_ERASE_GROUP_END 0x24
/* CMD37: arg0[31:0]: data address, response R1 */
#define CMD_UNTAG_ERASE_GROUP 0x25
/* CMD38: arg0[31:0]: stuff bits, response R1b */
#define CMD_ERASE 0x26
/* CMD42: arg0[31:0]: stuff bits, response R1b */
#define CMD_LOCK_UNLOCK 0x2a
/* CMD58: response R3 */
#define CMD_READ_OCR 0x3a
/* CMD59: arg0[31:1]: stuff bits, arg0[0:0]: crc option, response R1 */
#define CMD_CRC_ON_OFF 0x3b

/* command responses */
/* R1: size 1 byte */
#define R1_IDLE_STATE 0
#define R1_ERASE_RESET 1
#define R1_ILL_COMMAND 2
#define R1_COM_CRC_ERR 3
#define R1_ERASE_SEQ_ERR 4
#define R1_ADDR_ERR 5
#define R1_PARAM_ERR 6
/* R1b: equals R1, additional busy bytes */
/* R2: size 2 bytes */
#define R2_CARD_LOCKED 0
#define R2_WP_ERASE_SKIP 1
#define R2_ERR 2
#define R2_CARD_ERR 3
#define R2_CARD_ECC_FAIL 4
#define R2_WP_VIOLATION 5
#define R2_INVAL_ERASE 6
#define R2_OUT_OF_RANGE 7
#define R2_CSD_OVERWRITE 7
#define R2_IDLE_STATE (R1_IDLE_STATE + 8)
#define R2_ERASE_RESET (R1_ERASE_RESET + 8)
#define R2_ILL_COMMAND (R1_ILL_COMMAND + 8)
#define R2_COM_CRC_ERR (R1_COM_CRC_ERR + 8)
#define R2_ERASE_SEQ_ERR (R1_ERASE_SEQ_ERR + 8)
#define R2_ADDR_ERR (R1_ADDR_ERR + 8)
#define R2_PARAM_ERR (R1_PARAM_ERR + 8)
/* R3: size 5 bytes */
#define R3_OCR_MASK (0xffffffffUL)
#define R3_IDLE_STATE (R1_IDLE_STATE + 32)
#define R3_ERASE_RESET (R1_ERASE_RESET + 32)
#define R3_ILL_COMMAND (R1_ILL_COMMAND + 32)
#define R3_COM_CRC_ERR (R1_COM_CRC_ERR + 32)
#define R3_ERASE_SEQ_ERR (R1_ERASE_SEQ_ERR + 32)
#define R3_ADDR_ERR (R1_ADDR_ERR + 32)
#define R3_PARAM_ERR (R1_PARAM_ERR + 32)
/* Data Response: size 1 byte */
#define DR_STATUS_MASK 0x0e
#define DR_STATUS_ACCEPTED 0x05
#define DR_STATUS_CRC_ERR 0x0a
#define DR_STATUS_WRITE_ERR 0x0c

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/





/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
u8 SD_MMC_SPI_Init(void);
u8 SD_MMC_ReadWrite_Byte(u8 ch);
void SD_MMC_Low_Speed(void);
void SD_MMC_High_Speed(void);
u8 SD_MMC_Send_Command(u8 cmd, u32 arg);
u8 SD_MMC_Read_Single_Block(u32 sector, u8* buffer);
u8 SD_MMC_Write_Single_Block(u32 sector, u8* buffer);

///////////////////////////////////////////////////////////////////////////////////


/**
 * \ingroup sd_raw_config
 * Controls MMC/SD write support.
 *
 * Set to 1 to enable MMC/SD write support, set to 0 to disable it.
 */
#define SD_RAW_WRITE_SUPPORT 1

/**
 * \ingroup sd_raw_config
 * Controls MMC/SD write buffering.
 *
 * Set to 1 to buffer write accesses, set to 0 to disable it.
 *
 * \note This option has no effect when SD_RAW_WRITE_SUPPORT is 0.
 */
#define SD_RAW_WRITE_BUFFERING 1

/**
 * \ingroup sd_raw_config
 * Controls MMC/SD access buffering.
 * 
 * Set to 1 to save static RAM, but be aware that you will
 * lose performance.
 *
 * \note When SD_RAW_WRITE_SUPPORT is 1, SD_RAW_SAVE_RAM will
 *       be reset to 0.
 */
#define SD_RAW_SAVE_RAM 0

/* configuration checks */
#if SD_RAW_WRITE_SUPPORT
#undef SD_RAW_SAVE_RAM
#define SD_RAW_SAVE_RAM 0
#else
#undef SD_RAW_WRITE_BUFFERING
#define SD_RAW_WRITE_BUFFERING 0
#endif


//////////////////////////////////////////////////////////////////////////////////////
/**
 * \addtogroup sd_raw
 *
 * @{
 */
/**
 * \file
 * MMC/SD raw access header (license: GPLv2 or LGPLv2.1)
 *
 * \author Roland Riegel
 */

/**
 * The card's layout is harddisk-like, which means it contains
 * a master boot record with a partition table.
 */
#define SD_RAW_FORMAT_HARDDISK 0
/**
 * The card contains a single filesystem and no partition table.
 */
#define SD_RAW_FORMAT_SUPERFLOPPY 1
/**
 * The card's layout follows the Universal File Format.
 */
#define SD_RAW_FORMAT_UNIVERSAL 2
/**
 * The card's layout is unknown.
 */
#define SD_RAW_FORMAT_UNKNOWN 3

/**
 * This struct is used by sd_raw_get_info() to return
 * manufacturing and status information of the card.
 */
struct sd_raw_info
{
    /**
     * A manufacturer code globally assigned by the SD card organization.
     */
    u8 manufacturer;
    /**
     * A string describing the card's OEM or content, globally assigned by the SD card organization.
     */
    u8 oem[3];
    /**
     * A product name.
     */
    u8 product[6];
    /**
     * The card's revision, coded in packed BCD.
     *
     * For example, the revision value \c 0x32 means "3.2".
     */
    u8 revision;
    /**
     * A serial number assigned by the manufacturer.
     */
    u32 serial;
    /**
     * The year of manufacturing.
     *
     * A value of zero means year 2000.
     */
    u8 manufacturing_year;
    /**
     * The month of manufacturing.
     */
    u8 manufacturing_month;
    /**
     * The card's total capacity in bytes.
     */
    u32 capacity;
    /**
     * Defines wether the card's content is original or copied.
     *
     * A value of \c 0 means original, \c 1 means copied.
     */
    u8 flag_copy;
    /**
     * Defines wether the card's content is write-protected.
     *
     * \note This is an internal flag and does not represent the
     *       state of the card's mechanical write-protect switch.
     */
    u8 flag_write_protect;
    /**
     * Defines wether the card's content is temporarily write-protected.
     *
     * \note This is an internal flag and does not represent the
     *       state of the card's mechanical write-protect switch.
     */
    u8 flag_write_protect_temp;
    /**
     * The card's data layout.
     *
     * See the \c SD_RAW_FORMAT_* constants for details.
     *
     * \note This value is not guaranteed to match reality.
     */
    u8 format;
};

typedef u8 (*sd_raw_read_interval_handler_t)(u8* buffer, u32 offset, void* p);
typedef u16 (*sd_raw_write_interval_handler_t)(u8* buffer, u32 offset, void* p);

u8 sd_raw_init();
u8 sd_raw_available();
u8 sd_raw_locked();

u8 sd_raw_read(u32 offset, u8* buffer, u16 length);
u8 sd_raw_read_interval(u32 offset, u8* buffer, u16 interval, u16 length, sd_raw_read_interval_handler_t callback, void* p);
u8 sd_raw_write(u32 offset, const u8* buffer, u16 length);
u8 sd_raw_write_interval(u32 offset, u8* buffer, u16 length, sd_raw_write_interval_handler_t callback, void* p);
u8 sd_raw_sync();

u8 sd_raw_get_info(struct sd_raw_info* info);

///////////////////////////////////////////////////////////////////////////////////


#endif /* _SD_MMC_SPI_H */