133 lines
5.7 KiB
C
133 lines
5.7 KiB
C
/*
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* File : msd.h
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* SPI mode SD Card Driver
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2009-04-17 Bernard first version.
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*/
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#ifndef MSD_H_INCLUDED
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#define MSD_H_INCLUDED
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#include <stdint.h>
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#include <drivers/spi.h>
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/* SD command (SPI mode) */
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#define GO_IDLE_STATE 0 /* CMD0 R1 */
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#define SEND_OP_COND 1 /* CMD1 R1 */
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#define SWITCH_FUNC 6 /* CMD6 R1 */
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#define SEND_IF_COND 8 /* CMD8 R7 */
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#define SEND_CSD 9 /* CMD9 R1 */
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#define SEND_CID 10 /* CMD10 R1 */
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#define STOP_TRANSMISSION 12 /* CMD12 R1B */
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#define SEND_STATUS 13 /* CMD13 R2 */
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#define SET_BLOCKLEN 16 /* CMD16 R1 */
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#define READ_SINGLE_BLOCK 17 /* CMD17 R1 */
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#define READ_MULTIPLE_BLOCK 18 /* CMD18 R1 */
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#define WRITE_BLOCK 24 /* CMD24 R1 */
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#define WRITE_MULTIPLE_BLOCK 25 /* CMD25 R1 */
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#define PROGRAM_CSD 27 /* CMD27 R1 */
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#define SET_WRITE_PROT 28 /* CMD28 R1B */
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#define CLR_WRITE_PROT 29 /* CMD29 R1B */
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#define SEND_WRITE_PROT 30 /* CMD30 R1 */
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#define ERASE_WR_BLK_START_ADDR 32 /* CMD32 R1 */
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#define ERASE_WR_BLK_END_ADDR 33 /* CMD33 R1 */
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#define ERASE 38 /* CMD38 R1B */
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#define LOCK_UNLOCK 42 /* CMD42 R1 */
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#define APP_CMD 55 /* CMD55 R1 */
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#define GEN_CMD 56 /* CMD56 R1 */
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#define READ_OCR 58 /* CMD58 R3 */
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#define CRC_ON_OFF 59 /* CMD59 R1 */
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/* Application-Specific Command */
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#define SD_STATUS 13 /* ACMD13 R2 */
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#define SEND_NUM_WR_BLOCKS 22 /* ACMD22 R1 */
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#define SET_WR_BLK_ERASE_COUNT 23 /* ACMD23 R1 */
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#define SD_SEND_OP_COND 41 /* ACMD41 R1 */
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#define SET_CLR_CARD_DETECT 42 /* ACMD42 R1 */
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#define SEND_SCR 51 /* ACMD51 R1 */
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/* Start Data tokens */
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/* Tokens (necessary because at nop/idle (and CS active) only 0xff is on the data/command line) */
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#define MSD_TOKEN_READ_START 0xFE /* Data token start byte, Start Single Block Read */
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#define MSD_TOKEN_WRITE_SINGLE_START 0xFE /* Data token start byte, Start Single Block Write */
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#define MSD_TOKEN_WRITE_MULTIPLE_START 0xFC /* Data token start byte, Start Multiple Block Write */
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#define MSD_TOKEN_WRITE_MULTIPLE_STOP 0xFD /* Data toke stop byte, Stop Multiple Block Write */
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/* MSD reponses and error flags */
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#define MSD_RESPONSE_NO_ERROR 0x00
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#define MSD_IN_IDLE_STATE 0x01
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#define MSD_ERASE_RESET 0x02
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#define MSD_ILLEGAL_COMMAND 0x04
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#define MSD_COM_CRC_ERROR 0x08
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#define MSD_ERASE_SEQUENCE_ERROR 0x10
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#define MSD_ADDRESS_ERROR 0x20
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#define MSD_PARAMETER_ERROR 0x40
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#define MSD_RESPONSE_FAILURE 0xFF
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/* Data response error */
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#define MSD_DATA_OK 0x05
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#define MSD_DATA_CRC_ERROR 0x0B
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#define MSD_DATA_WRITE_ERROR 0x0D
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#define MSD_DATA_OTHER_ERROR 0xFF
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#define MSD_DATA_RESPONSE_MASK 0x1F
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#define MSD_GET_DATA_RESPONSE(res) (res & MSD_DATA_RESPONSE_MASK)
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#define MSD_CMD_LEN 6 /**< command, arg and crc. */
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#define MSD_RESPONSE_MAX_LEN 5 /**< response max len */
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#define MSD_CSD_LEN 16 /**< SD crad CSD register len */
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#define SECTOR_SIZE 512 /**< sector size, default 512byte */
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/* card try timeout, unit: ms */
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#define CARD_TRY_TIMES 3000
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#define CARD_TRY_TIMES_ACMD41 800
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#define CARD_WAIT_TOKEN_TIMES 800
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#define MSD_USE_PRE_ERASED /**< id define MSD_USE_PRE_ERASED, before CMD25, send ACMD23 */
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/**
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* SD/MMC card type
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*/
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typedef enum
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{
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MSD_CARD_TYPE_UNKNOWN = 0, /**< unknown */
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MSD_CARD_TYPE_MMC, /**< MultiMedia Card */
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MSD_CARD_TYPE_SD_V1_X, /**< Ver 1.X Standard Capacity SD Memory Card */
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MSD_CARD_TYPE_SD_V2_X, /**< Ver 2.00 or later Standard Capacity SD Memory Card */
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MSD_CARD_TYPE_SD_SDHC, /**< High Capacity SD Memory Card */
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MSD_CARD_TYPE_SD_SDXC, /**< later Extended Capacity SD Memory Card */
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}msd_card_type;
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typedef enum
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{
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response_type_unknown = 0,
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response_r1,
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response_r1b,
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response_r2,
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response_r3,
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response_r4,
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response_r5,
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response_r7,
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}response_type;
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struct msd_device
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{
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struct rt_device parent; /**< RT-Thread device struct */
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struct rt_device_blk_geometry geometry; /**< sector size, sector count */
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struct rt_spi_device * spi_device; /**< SPI interface */
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msd_card_type card_type; /**< card type: MMC SD1.x SD2.0 SDHC SDXC */
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uint32_t max_clock; /**< MAX SPI clock */
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};
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extern rt_err_t msd_init(const char * sd_device_name, const char * spi_device_name);
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#endif // MSD_H_INCLUDED
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