78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
#ifndef _SPI_SD_DRIVER_H_
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#define _SPI_SD_DRIVER_H_
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#include "stm32l1xx.h" //包含需要的头文件
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#include "bsp.h"
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//typedef uint32_t u32;
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//typedef uint16_t u16;
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//typedef uint8_t u8;
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/* Private define ------------------------------------------------------------*/
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/* SPI总线速度设置*/
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#define SPI_SPEED_LOW 0
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#define SPI_SPEED_HIGH 1
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// SD卡类型定义
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#define SD_TYPE_ERR 0X00
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#define SD_TYPE_MMC 0X01
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#define SD_TYPE_V1 0X02
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#define SD_TYPE_V2 0X04
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#define SD_TYPE_V2HC 0X06
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// SD卡指令表
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#define CMD0 0 //卡复位
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#define CMD1 1
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#define CMD8 8 //命令8 ，SEND_IF_COND
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#define CMD9 9 //命令9 ，读CSD数据
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#define CMD10 10 //命令10，读CID数据
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#define CMD12 12 //命令12，停止数据传输
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#define CMD16 16 //命令16，设置SectorSize 应返回0x00
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#define CMD17 17 //命令17，读sector
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#define CMD18 18 //命令18，读Multi sector
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#define CMD23 23 //命令23，设置多sector写入前预先擦除N个block
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#define CMD24 24 //命令24，写sector
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#define CMD25 25 //命令25，写Multi sector
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#define CMD41 41 //命令41，应返回0x00
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#define CMD55 55 //命令55，应返回0x01
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#define CMD58 58 //命令58，读OCR信息
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#define CMD59 59 //命令59，使能/禁止CRC，应返回0x00
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//数据写入回应字意义
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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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//SD卡回应标记字
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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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//这部分应根据具体的连线来修改!
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//Mini STM32使用的是PA3作为SD卡的CS脚.
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#define SD_CS_ENABLE() GPIO_ResetBits(GPIOC,GPIO_Pin_6) //选中SD卡
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#define SD_CS_DISABLE() GPIO_SetBits(GPIOC,GPIO_Pin_6) //不选中SD卡
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extern u8 SD_Type;//SD卡的类型
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/* Private function prototypes -----------------------------------------------*/
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//函数申明区
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void SD_SPI_Init(void);
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u8 SD_SPI_ReadWriteByte(u8 data);
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void SD_SPI_SpeedLow(void);
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void SD_SPI_SpeedHigh(void);
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u8 SD_WaitReady(void); //等待SD卡准备
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u8 SD_GetResponse(u8 Response); //获得相应
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u8 SD_Initialize(void); //初始化
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u8 SD_ReadDisk(u8*buf,u32 sector,u8 cnt); //读块
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u8 SD_WriteDisk(u8*buf,u32 sector,u8 cnt); //写块
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u32 SD_GetSectorCount(void); //读扇区数
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u8 SD_GetCID(u8 *cid_data); //读SD卡CID
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u8 SD_GetCSD(u8 *csd_data); //读SD卡CSD
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#endif
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