【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(七)-准备移植FatFs
【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(一)-初步认识SD卡
【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(二)-了解SD总线,命令的相关介绍
【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(三)-SD卡的操作流程
【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(四)-介绍库函数,获取一些SD卡的信息
【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(五)-文件管理初步介绍
【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(六)-FatFs使用的思路介绍
【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(七)-准备移植FatFs
【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(八)-认识内存管理
【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(终)-配合内存管理来遍历SD卡
FatFs官方网站:http://elm-chan.org/fsw/ff/00index_e.html
注意一点,在使用文件管理之前,你应该要保证和你连接的设备,所有你用到的功能都是调通了的
例如
1.你的设备是SD卡,或是Flash之类的
2.功能实现的部分,例如一些《初始化》、《读功能》,或是《写功能》
这些东西都实现了,才来添加FatFs文件管理
因为在《diskio.c》里,需要执行你已经封装好的函数,也就是上两行说的《初始化》《读功能》《写功能》之类的
如果还没调通,就来移植,只怕问题会更多
那如果一切都准备好了,下面就来移植FatFs吧
在我的范例教程里,用的是《ff11a》
我知道目前(2020.12.14)最新版本是《ff14a》,并且和《ff11a》有些出入
但只要懂《ff11a》的思路,往后的版本也能驾轻就熟
《2021.02.02修改:我改用10b版本了,正点和野火也是用这个版本,我是用11a后发现有问题,才改的,我不知道在哪看的,以为他们都是用11a版本》
《但是添加过程都差不多,下面的文字和图片有出入,我就懒得改了。。。抱歉》
在官网的历史版本里面可以下载【Download:Previous Releases】,找到R0.11a下载 找到R0.10b下载
此压缩档里面有两个文件
等等在开Keil,先去自己的项目路径下,新建一个FatFs文件夹(文件分类后,比较方便阅读)
把压缩档里面的src复制到刚建的FatFs文件夹
doc就不用复制了
此时,打开Keil,在project下,新建一个FATFS文件夹,并且添加2个源文件《diskio.c》《ff.c》
再把头文件路径也填上,编译后,让头文件显示出来,有错误没关系,因为我们之后就会修改
首先来看《ffconf.h》,通过这些宏定义,可以设定你不需要什么功能,毕竟这样可以节省空间
另外还可以设置编码(_CODE_PAGE),中文编码的文件略大一些,如果要用中文编码,还需要去option文件夹,找到cc936源文件,添加到自己项目,这里我先设置为1
还有是否要支持长文件名,是否支持格式化...等等
/*---------------------------------------------------------------------------/ / FatFs - FAT file system module configuration file R0.11a (C)ChaN, 2015 /---------------------------------------------------------------------------*/ #define _FFCONF 64180 /* Revision ID */ /*---------------------------------------------------------------------------/ / Function Configurations /---------------------------------------------------------------------------*/ #define _FS_READONLY 0 // 是否只读 /* This option switches read-only configuration. (0:Read/Write or 1:Read-only) / Read-only configuration removes writing API functions, f_write(), f_sync(), / f_unlink(), f_mkdir(), f_chmod(), f_rename(), f_truncate(), f_getfree() / and optional writing functions as well. */ #define _FS_MINIMIZE 0 // 是否使用裁剪文件 /* This option defines minimization level to remove some basic API functions. / / 0: All basic functions are enabled. / 1: f_stat(), f_getfree(), f_unlink(), f_mkdir(), f_chmod(), f_utime(), / f_truncate() and f_rename() function are removed. / 2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1. / 3: f_lseek() function is removed in addition to 2. */ #define _USE_STRFUNC 0 // 是否允许字符串操作 /* This option switches string functions, f_gets(), f_putc(), f_puts() and / f_printf(). / / 0: Disable string functions. / 1: Enable without LF-CRLF conversion. / 2: Enable with LF-CRLF conversion. */ #define _USE_FIND 0 // 切换过滤目录读取功能和相关功能 /* This option switches filtered directory read feature and related functions, / f_findfirst() and f_findnext(). (0:Disable or 1:Enable) */ #define _USE_MKFS 0 // 是否开启格式化功能 /* This option switches f_mkfs() function. (0:Disable or 1:Enable) */ #define _USE_FASTSEEK 0 // 是否开启快速索引 /* This option switches fast seek feature. (0:Disable or 1:Enable) */ #define _USE_LABEL 0 // 是否开启切换卷标功能 /* This option switches volume label functions, f_getlabel() and f_setlabel(). / (0:Disable or 1:Enable) */ #define _USE_FORWARD 0 // 是否允许f_forward函数 /* This option switches f_forward() function. (0:Disable or 1:Enable) / To enable it, also _FS_TINY need to be set to 1. */ /*---------------------------------------------------------------------------/ / Locale and Namespace Configurations /---------------------------------------------------------------------------*/ // 编码【932为日文】【936为简体中文】【949为韩文】【950为繁体中文】 #define _CODE_PAGE 1 /* This option specifies the OEM code page to be used on the target system. / Incorrect setting of the code page can cause a file open failure. / / 1 - ASCII (No extended character. Non-LFN cfg. only) / 437 - U.S. / 720 - Arabic / 737 - Greek / 771 - KBL / 775 - Baltic / 850 - Latin 1 / 852 - Latin 2 / 855 - Cyrillic / 857 - Turkish / 860 - Portuguese / 861 - Icelandic / 862 - Hebrew / 863 - Canadian French / 864 - Arabic / 865 - Nordic / 866 - Russian / 869 - Greek 2 / 932 - Japanese (DBCS) / 936 - Simplified Chinese (DBCS) / 949 - Korean (DBCS) / 950 - Traditional Chinese (DBCS) */ #define _USE_LFN 0 // 是否支持长文件名 #define _MAX_LFN 255 /* The _USE_LFN option switches the LFN feature. / / 0: Disable LFN feature. _MAX_LFN has no effect. / 1: Enable LFN with static working buffer on the BSS. Always NOT thread-safe. / 2: Enable LFN with dynamic working buffer on the STACK. / 3: Enable LFN with dynamic working buffer on the HEAP. / / When enable the LFN feature, Unicode handling functions (option/unicode.c) must / be added to the project. The LFN working buffer occupies (_MAX_LFN + 1) * 2 bytes. / When use stack for the working buffer, take care on stack overflow. When use heap / memory for the working buffer, memory management functions, ff_memalloc() and / ff_memfree(), must be added to the project. */ #define _LFN_UNICODE 0 // 切换字符编码 /* This option switches character encoding on the API. (0:ANSI/OEM or 1:Unicode) / To use Unicode string for the path name, enable LFN feature and set _LFN_UNICODE / to 1. This option also affects behavior of string I/O functions. */ #define _STRF_ENCODE 3 // 编码相关 /* When _LFN_UNICODE is 1, this option selects the character encoding on the file to / be read/written via string I/O functions, f_gets(), f_putc(), f_puts and f_printf(). / / 0: ANSI/OEM / 1: UTF-16LE / 2: UTF-16BE / 3: UTF-8 / / When _LFN_UNICODE is 0, this option has no effect. */ #define _FS_RPATH 0 // 是否允许相对路径 /* This option configures relative path feature. / / 0: Disable relative path feature and remove related functions. / 1: Enable relative path feature. f_chdir() and f_chdrive() are available. / 2: f_getcwd() function is available in addition to 1. / / Note that directory items read via f_readdir() are affected by this option. */ /*---------------------------------------------------------------------------/ / Drive/Volume Configurations /---------------------------------------------------------------------------*/ #define _VOLUMES 1 // 磁盘逻辑卷数 /* Number of volumes (logical drives) to be used. */ #define _STR_VOLUME_ID 0 #define _VOLUME_STRS "RAM","NAND","CF","SD1","SD2","USB1","USB2","USB3" /* _STR_VOLUME_ID option switches string volume ID feature. / When _STR_VOLUME_ID is set to 1, also pre-defined strings can be used as drive / number in the path name. _VOLUME_STRS defines the drive ID strings for each / logical drives. Number of items must be equal to _VOLUMES. Valid characters for / the drive ID strings are: A-Z and 0-9. */ #define _MULTI_PARTITION 0 // 分区选项,默认为0,即一个分区,若想要多分区可自行设置 /* This option switches multi-partition feature. By default (0), each logical drive / number is bound to the same physical drive number and only an FAT volume found on / the physical drive will be mounted. When multi-partition feature is enabled (1), / each logical drive number is bound to arbitrary physical drive and partition / listed in the VolToPart[]. Also f_fdisk() funciton will be available. */ #define _MIN_SS 512 // 扇区缓冲最小值 #define _MAX_SS 512 // 扇区缓冲最大值 /* These options configure the range of sector size to be supported. (512, 1024, / 2048 or 4096) Always set both 512 for most systems, all type of memory cards and / harddisk. But a larger value may be required for on-board flash memory and some / type of optical media. When _MAX_SS is larger than _MIN_SS, FatFs is configured / to variable sector size and GET_SECTOR_SIZE command must be implemented to the / disk_ioctl() function. */ #define _USE_TRIM 0 /* This option switches ATA-TRIM feature. (0:Disable or 1:Enable) / To enable Trim feature, also CTRL_TRIM command should be implemented to the / disk_ioctl() function. */ #define _FS_NOFSINFO 0 /* If you need to know correct free space on the FAT32 volume, set bit 0 of this / option, and f_getfree() function at first time after volume mount will force / a full FAT scan. Bit 1 controls the use of last allocated cluster number. / / bit0=0: Use free cluster count in the FSINFO if available. / bit0=1: Do not trust free cluster count in the FSINFO. / bit1=0: Use last allocated cluster number in the FSINFO if available. / bit1=1: Do not trust last allocated cluster number in the FSINFO. */ /*---------------------------------------------------------------------------/ / System Configurations /---------------------------------------------------------------------------*/ #define _FS_TINY 0 // 文件系统为标准的还是微型的 /* This option switches tiny buffer configuration. (0:Normal or 1:Tiny) / At the tiny configuration, size of the file object (FIL) is reduced _MAX_SS / bytes. Instead of private sector buffer eliminated from the file object, / common sector buffer in the file system object (FATFS) is used for the file / data transfer. */ #define _FS_NORTC 0 #define _NORTC_MON 1 #define _NORTC_MDAY 1 #define _NORTC_YEAR 2015 /* The _FS_NORTC option switches timestamp feature. If the system does not have / an RTC function or valid timestamp is not needed, set _FS_NORTC to 1 to disable / the timestamp feature. All objects modified by FatFs will have a fixed timestamp / defined by _NORTC_MON, _NORTC_MDAY and _NORTC_YEAR. / When timestamp feature is enabled (_FS_NORTC == 0), get_fattime() function need / to be added to the project to read current time form RTC. _NORTC_MON, / _NORTC_MDAY and _NORTC_YEAR have no effect. / These options have no effect at read-only configuration (_FS_READONLY == 1). */ #define _FS_LOCK 0 /* The _FS_LOCK option switches file lock feature to control duplicated file open / and illegal operation to open objects. This option must be 0 when _FS_READONLY / is 1. / / 0: Disable file lock feature. To avoid volume corruption, application program / should avoid illegal open, remove and rename to the open objects. / >0: Enable file lock feature. The value defines how many files/sub-directories / can be opened simultaneously under file lock control. Note that the file / lock feature is independent of re-entrancy. */ #define _FS_REENTRANT 0 #define _FS_TIMEOUT 1000 #define _SYNC_t HANDLE /* The _FS_REENTRANT option switches the re-entrancy (thread safe) of the FatFs / module itself. Note that regardless of this option, file access to different / volume is always re-entrant and volume control functions, f_mount(), f_mkfs() / and f_fdisk() function, are always not re-entrant. Only file/directory access / to the same volume is under control of this feature. / / 0: Disable re-entrancy. _FS_TIMEOUT and _SYNC_t have no effect. / 1: Enable re-entrancy. Also user provided synchronization handlers, / ff_req_grant(), ff_rel_grant(), ff_del_syncobj() and ff_cre_syncobj() / function, must be added to the project. Samples are available in / option/syscall.c. / / The _FS_TIMEOUT defines timeout period in unit of time tick. / The _SYNC_t defines O/S dependent sync object type. e.g. HANDLE, ID, OS_EVENT*, / SemaphoreHandle_t and etc.. A header file for O/S definitions needs to be / included somewhere in the scope of ff.c. */ #define _WORD_ACCESS 0 // 数据递进格式 /* The _WORD_ACCESS option is an only platform dependent option. It defines / which access method is used to the word data on the FAT volume. / / 0: Byte-by-byte access. Always compatible with all platforms. / 1: Word access. Do not choose this unless under both the following conditions. / / * Address misaligned memory access is always allowed to ALL instructions. / * Byte order on the memory is little-endian. / / If it is the case, _WORD_ACCESS can also be set to 1 to reduce code size. / Following table shows allowable settings of some type of processors. / / ARM7TDMI 0 *2 ColdFire 0 *1 V850E 0 *2 / Cortex-M3 0 *3 Z80 0/1 V850ES 0/1 / Cortex-M0 0 *2 x86 0/1 TLCS-870 0/1 / AVR 0/1 RX600(LE) 0/1 TLCS-900 0/1 / AVR32 0 *1 RL78 0 *2 R32C 0 *2 / PIC18 0/1 SH-2 0 *1 M16C 0/1 / PIC24 0 *2 H8S 0 *1 MSP430 0 *2 / PIC32 0 *1 H8/300H 0 *1 8051 0/1 / / *1:Big-endian. / *2:Unaligned memory access is not supported. / *3:Some compilers generate LDM/STM for mem_cpy function. */
对应上面部分宏定义,我整理了一个表格,可以一目了然的认识宏定义是做什么事情
《2021.01.16修改:不用自己的表格了,官方有做出一个表格》
接着来看《diskio.c》编译的错误基本都在这了
首先是把几个头文件注释了,这几个头文件是其他范例有的,我们这里要用自己的头文件
下面的三个宏定义《ATA》《MMC》《USB》,可以改成自己想要的名称,例如我的板子上有SD、Flash,干脆就定0和1
#include "sdio_sdcard.h" #define SD 0 #define FLASH 1
然后把函数《disk_status》《disk_initialize》《disk_read》《disk_write》里面执行的代码注释了,或者删除也可以,未来要添加自己的代码(这里先不添加,先找出所有错误)
对了,由于我上面改了宏定义,这里switch-case也要做一些修改(图片原来的ATA、MMC、USB,要修改成SD和FLASH)
DSTATUS disk_status ( BYTE pdrv /* Physical drive nmuber to identify the drive */ ) { DSTATUS stat; int result; switch (pdrv) { case SD : return stat; case FLASH : return stat; } return STA_NOINIT; }
再次编译,发现错误
解决这个错误有两个方法,但是这两个方法,要用哪个,需要取决于你应用的设计
get_fattime是获取当前时间
如果不需要,在《ffconf.h》里面,找到宏定义《#define _FS_NORTC》,改为1,即可关闭
如果需要这个功能,需要在《diskio.c》里面,实现get_fattime函数,代码如下
DWORD get_fattime(void) { /* 返回当前时间戳 */ return ((DWORD)(2015 - 1980) << 25) /* Year 2015 */ | ((DWORD)1 << 21) /* Month 1 */ | ((DWORD)1 << 16) /* Mday 1 */ | ((DWORD)0 << 11) /* Hour 0 */ | ((DWORD)0 << 5) /* Min 0 */ | ((DWORD)0 >> 1); /* Sec 0 */ }
我不需要这个功能,我直接设定宏定义为1,然后编译,这时错误就没有了
下面先完成 《diskio.c》代码的添加
源文件《sdio_sdcard.c》和头文件《sdio_sdcard.h》,我会放在文章的最后
里面包含SD_Init函数
另外,这函数又是在做什么事情的?我两篇博客分别提到思路以及实现
我的第三篇博客【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(三)-SD卡的操作流程,里面有提到图形化流程,也是SD_Init需要做的事情
我的第四篇博客【STM32】使用SDIO进行SD卡读写,包含文件管理FatFs(四)-介绍库函数,获取一些SD卡的信息,这篇才是真正讲到如何使用库函数,完成SD_Init初始化
但有一点需要注意!我里面提到的9个步骤(第10步骤不是初始化该做的事),我是拆分开来,一部分一部分代码来讲解的,而本篇文章末了的代码,是整合过的,就这一点不同而已
SD_Error SD_Init(void) { ... ... }
FatFs文件管理的宗旨,你不要自己去调用SD的初始化
由文件管理自己去调用,但你还是要给出命令的,例如接口《f_mount》
SD_Init会返回一个状态SD_Error,这个状态会通知文件管理系统,然后《f_mount》也有一个返回值,最终我们就会得知初始化的结果
DSTATUS disk_initialize ( BYTE pdrv /* Physical drive nmuber to identify the drive */ ) { DSTATUS stat; int result = 0; switch (pdrv) { case SD : result = SD_Init(); // SD卡初始化 break; case W25Qxx : break; } if(result)return STA_NOINIT; else return 0; //初始化成功 }
完成了设备接口的配置,我们回到自己的应用层,尝试执行《f_mount》,参数2:path,这里给的逻辑编号,是你在《diskio.c》里面的宏定义,SD我定义为0,这里就给 "0:"
最终函数会返回一个状态《FRESULT》,如果返回是0,代表正常
《2021.01.14新增的内容:f_mount就是挂起,挂起后你才可以使用一些功能,例如读取f_open,或是打开文件夹f_opendir,写入数据f_write。。。等等》
#include "stm32f4xx.h" #include "delay.h" // 外设 #include "sdio_sdcard.h" #include "usart.h" // FatFS #include "diskio.h" #include "ff.h" FATFS *fs[_VOLUMES]; // FatFs文件系统对象 FRESULT res_sd; // 文件操作结果 int main(void) { delay_init(180); /* 串口初始化 */ uart1_init(9600); /* 文件管理系统初始化 */ res_sd = f_mount(fs[0],"0:",1); USART_SendData(USART1, res_sd); // 打印处理结果 while(1); }
执行效果如下,记得要用HEX显示
/* File function return code (FRESULT) */ typedef enum { FR_OK = 0, /* (0) Succeeded */ FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */ FR_INT_ERR, /* (2) Assertion failed */ FR_NOT_READY, /* (3) The physical drive cannot work */ FR_NO_FILE, /* (4) Could not find the file */ FR_NO_PATH, /* (5) Could not find the path */ FR_INVALID_NAME, /* (6) The path name format is invalid */ FR_DENIED, /* (7) Access denied due to prohibited access or directory full */ FR_EXIST, /* (8) Access denied due to prohibited access */ FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */ FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */ FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */ FR_NOT_ENABLED, /* (12) The volume has no work area */ FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */ FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */ FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */ FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */ FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */ FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_LOCK */ FR_INVALID_PARAMETER /* (19) Given parameter is invalid */ } FRESULT;
至此,移植FatFs初步算是成功了(因为执行f_mount返回的是00,代表成功)
下一篇,先来研究内存管理,因为FatFs文件管理需要使用到
等内存管理结束后,会回头处理读取SD卡的事情
《2021.01.14新增的内容:这里测试了路径,我把测试结果贴上来,共两张图,以及代码块》
《第一张图是我SD卡的内容,包含几个文件夹,和几张图片,以及文件夹的嵌套关系》
《第二张图就是测试结果了,我把结果都写在注释里面,当前代码的行数,要对照上一行的注释》
《代码块:因为涉及到读取,所以必须修改diskio.c》
DRESULT disk_read ( BYTE pdrv, /* Physical drive nmuber (0..) */ BYTE *buff, /* Data buffer to store read data */ DWORD sector, /* Sector address (LBA) */ UINT count /* Number of sectors to read (1..128) */ ) { u8 res=0; if (!count)return RES_PARERR;//count不能等于0,否则返回参数错误 switch(pdrv) { case SD://SD卡 res=SD_ReadDisk(buff,sector,count); while(res)//读出错 { SD_Init(); //重新初始化SD卡 res=SD_ReadDisk(buff,sector,count); //printf("sd rd error:%d\r\n",res); } break; case W25Qxx://外部flash break; default: res=1; } //处理返回值,将SPI_SD_driver.c的返回值转成ff.c的返回值 if(res==0x00)return RES_OK; else return RES_ERROR; }
最后,这是《sdio_sdcard.c》代码的全部(代码略长,这里建议用ctrl+F,例如搜寻SD_Init)
#include "sdio_sdcard.h" #include "string.h" #include "sys.h" #include "usart.h" /*用于sdio初始化的结构体*/ SDIO_InitTypeDef SDIO_InitStructure; SDIO_CmdInitTypeDef SDIO_CmdInitStructure; SDIO_DataInitTypeDef SDIO_DataInitStructure; SD_Error CmdError(void); SD_Error CmdResp7Error(void); SD_Error CmdResp1Error(u8 cmd); SD_Error CmdResp3Error(void); SD_Error CmdResp2Error(void); SD_Error CmdResp6Error(u8 cmd,u16*prca); SD_Error SDEnWideBus(u8 enx); SD_Error IsCardProgramming(u8 *pstatus); SD_Error FindSCR(u16 rca,u32 *pscr); u8 convert_from_bytes_to_power_of_two(u16 NumberOfBytes); static u8 CardType=SDIO_STD_CAPACITY_SD_CARD_V1_1; //SD卡类型(默认为1.x卡) static u32 CSD_Tab[4],CID_Tab[4],RCA=0; //SD卡CSD,CID以及相对地址(RCA)数据 static u8 DeviceMode=SD_DMA_MODE; //工作模式,注意,工作模式必须通过SD_SetDeviceMode,后才算数.这里只是定义一个默认的模式(SD_DMA_MODE) static u8 StopCondition=0; //是否发送停止传输标志位,DMA多块读写的时候用到 volatile SD_Error TransferError=SD_OK; //数据传输错误标志,DMA读写时使用 volatile u8 TransferEnd=0; //传输结束标志,DMA读写时使用 SD_CardInfo SDCardInfo; //SD卡信息 //SD_ReadDisk/SD_WriteDisk函数专用buf,当这两个函数的数据缓存区地址不是4字节对齐的时候, //需要用到该数组,确保数据缓存区地址是4字节对齐的. __align(4) u8 SDIO_DATA_BUFFER[512]; void SDIO_Register_Deinit() { SDIO->POWER=0x00000000; SDIO->CLKCR=0x00000000; SDIO->ARG=0x00000000; SDIO->CMD=0x00000000; SDIO->DTIMER=0x00000000; SDIO->DLEN=0x00000000; SDIO->DCTRL=0x00000000; SDIO->ICR=0x00C007FF; SDIO->MASK=0x00000000; } //初始化SD卡 //返回值:错误代码;(0,无错误) SD_Error SD_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; SD_Error errorstatus=SD_OK; u8 clkdiv=0; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC|RCC_AHB1Periph_GPIOD|RCC_AHB1Periph_DMA2, ENABLE);//使能GPIOC,GPIOD DMA2时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_SDIO, ENABLE);//SDIO时钟使能 RCC_APB2PeriphResetCmd(RCC_APB2Periph_SDIO, ENABLE);//SDIO复位 GPIO_InitStructure.GPIO_Pin =GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12; //PC8,9,10,11,12复用功能输出 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100M GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉 GPIO_Init(GPIOC, &GPIO_InitStructure);// PC8,9,10,11,12复用功能输出 GPIO_InitStructure.GPIO_Pin =GPIO_Pin_2; GPIO_Init(GPIOD, &GPIO_InitStructure);//PD2复用功能输出 //引脚复用映射设置 GPIO_PinAFConfig(GPIOC,GPIO_PinSource8,GPIO_AF_SDIO); //PC8,AF12 GPIO_PinAFConfig(GPIOC,GPIO_PinSource9,GPIO_AF_SDIO); GPIO_PinAFConfig(GPIOC,GPIO_PinSource10,GPIO_AF_SDIO); GPIO_PinAFConfig(GPIOC,GPIO_PinSource11,GPIO_AF_SDIO); GPIO_PinAFConfig(GPIOC,GPIO_PinSource12,GPIO_AF_SDIO); GPIO_PinAFConfig(GPIOD,GPIO_PinSource2,GPIO_AF_SDIO); RCC_APB2PeriphResetCmd(RCC_APB2Periph_SDIO, DISABLE);//SDIO结束复位 //SDIO外设寄存器设置为默认值 SDIO_Register_Deinit(); NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;//抢占优先级3 NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; //子优先级3 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能 NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器 errorstatus=SD_PowerON(); //SD卡上电,设置频率不超过400KHz,做一系列的判断,检测卡的类型等等,最后返回响应结果。现阶段最后有可能的命令是CMD41(SD卡)或是CND1(MMC卡) if(errorstatus==SD_OK)errorstatus=SD_InitializeCards(); //初始化SD卡(发送CMD2、CMD3、CMD9,CMD9之后,进入数据传输模式) if(errorstatus==SD_OK)errorstatus=SD_GetCardInfo(&SDCardInfo); //获取卡信息(解析SD卡,例如容量) if(errorstatus==SD_OK)errorstatus=SD_SelectDeselect((u32)(SDCardInfo.RCA<<16));//选中SD卡 if(errorstatus==SD_OK)errorstatus=SD_EnableWideBusOperation(SDIO_BusWide_4b); //设置4位数据宽度,MMC卡则需用8位 if((errorstatus==SD_OK)||(SDIO_MULTIMEDIA_CARD==CardType)) { // 判断SD卡版本,来设置卡的时钟 if(SDCardInfo.CardType==SDIO_STD_CAPACITY_SD_CARD_V1_1||SDCardInfo.CardType==SDIO_STD_CAPACITY_SD_CARD_V2_0) { clkdiv=SDIO_TRANSFER_CLK_DIV+2; //V1.1/V2.0卡,设置最高48/4=12Mhz } else clkdiv=SDIO_TRANSFER_CLK_DIV; //SDHC等其他卡,设置最高48/2=24Mhz SDIO_Clock_Set(clkdiv); //设置时钟频率,SDIO时钟计算公式:SDIO_CK时钟=SDIOCLK/[clkdiv+2];其中,SDIOCLK固定为48Mhz //errorstatus=SD_SetDeviceMode(SD_DMA_MODE); //设置为DMA模式 errorstatus=SD_SetDeviceMode(SD_POLLING_MODE);//设置为查询模式 } return errorstatus; } //SDIO时钟初始化设置 //clkdiv:时钟分频系数 //CK时钟=SDIOCLK/[clkdiv+2];(SDIOCLK时钟固定为48Mhz) void SDIO_Clock_Set(u8 clkdiv) { u32 tmpreg=SDIO->CLKCR; tmpreg&=0XFFFFFF00; tmpreg|=clkdiv; SDIO->CLKCR=tmpreg; } //卡上电 //查询所有SDIO接口上的卡设备,并查询其电压和配置时钟 //返回值:错误代码;(0,无错误) SD_Error SD_PowerON(void) { u8 i=0; SD_Error errorstatus=SD_OK; u32 response=0,count=0,validvoltage=0; u32 SDType=SD_STD_CAPACITY; /*初始化时的时钟不能大于400KHz*/ SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV; /* HCLK = 72MHz, SDIOCLK = 72MHz, SDIO_CK = HCLK/(178 + 2) = 400 KHz */ SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising; SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable; //不使用bypass模式,直接用HCLK进行分频得到SDIO_CK SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable; // 空闲时不关闭时钟电源 SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b; //1位数据线 SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;//硬件流 SDIO_Init(&SDIO_InitStructure); SDIO_SetPowerState(SDIO_PowerState_ON); //上电状态,开启卡时钟 SDIO->CLKCR|=1<<8; //SDIOCK使能 /* --------------------------------- 执行CMD0 ------------------------------------ */ for(i=0;i<74;i++) { SDIO_CmdInitStructure.SDIO_Argument = 0x0;//发送CMD0进入IDLE STAGE模式命令. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_GO_IDLE_STATE; //cmd0 SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No; //无响应 SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; //则CPSM在开始发送命令之前等待数据传输结束。 SDIO_SendCommand(&SDIO_CmdInitStructure); //写命令进命令寄存器 errorstatus=CmdError(); if(errorstatus==SD_OK)break; } if(errorstatus)return errorstatus;//返回错误状态 /* --------------------------------- 执行CMD8 ------------------------------------ */ SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN; //发送CMD8,短响应,检查SD卡接口特性 SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND; //cmd8 SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r7 SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; //关闭等待中断 SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp7Error(); //等待R7响应 /* --------------------------------- 执行CMD55 ------------------------------------ */ if(errorstatus==SD_OK) //R7响应正常 { CardType=SDIO_STD_CAPACITY_SD_CARD_V2_0; //SD 2.0卡 SDType=SD_HIGH_CAPACITY; //高容量卡 } SDIO_CmdInitStructure.SDIO_Argument = 0x00;//发送CMD55,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); //发送CMD55,短响应 errorstatus=CmdResp1Error(SD_CMD_APP_CMD); //等待R1响应 if(errorstatus==SD_OK)//SD2.0/SD 1.1,否则为MMC卡 { //SD卡,发送ACMD41 SD_APP_OP_COND,参数为:0x80100000 while((!validvoltage)&&(count<SD_MAX_VOLT_TRIAL)) { // 这里有个疑问,上面已经发送过CMD55了,为什么这里还要再发一次,我知道CMD55是复合指令,发送CMD41之前需要发送的 // 但下面又再发送一次,正点原子完全不解释,非常顺其自然的带过,野火也怀疑了一下,但是也不清楚为什么这么做 SDIO_CmdInitStructure.SDIO_Argument = 0x00;//发送CMD55,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD; //CMD55 SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); //发送CMD55,短响应 errorstatus=CmdResp1Error(SD_CMD_APP_CMD); //等待R1响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 //acmd41,命令参数由支持的电压范围及HCS位组成,HCS位置一来区分卡是SDSc还是sdhc SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType; //发送ACMD41,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_OP_COND; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r3 SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp3Error(); //等待R3响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 response=SDIO->RESP1;; //得到响应 validvoltage=(((response>>31)==1)?1:0); //判断SD卡上电是否完成 count++; } if(count>=SD_MAX_VOLT_TRIAL) { errorstatus=SD_INVALID_VOLTRANGE; return errorstatus; } if(response&=SD_HIGH_CAPACITY) { CardType=SDIO_HIGH_CAPACITY_SD_CARD; } } else//MMC卡 { //MMC卡,发送CMD1 SDIO_SEND_OP_COND,参数为:0x80FF8000 while((!validvoltage)&&(count<SD_MAX_VOLT_TRIAL)) { SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_MMC;//发送CMD1,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_OP_COND; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r3 SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp3Error(); //等待R3响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 response=SDIO->RESP1;; //得到响应 validvoltage=(((response>>31)==1)?1:0); count++; } if(count>=SD_MAX_VOLT_TRIAL) { errorstatus=SD_INVALID_VOLTRANGE; return errorstatus; } CardType=SDIO_MULTIMEDIA_CARD; } return(errorstatus); } //SD卡 Power OFF //返回值:错误代码;(0,无错误) SD_Error SD_PowerOFF(void) { SDIO_SetPowerState(SDIO_PowerState_OFF);//SDIO电源关闭,时钟停止 return SD_OK; } //初始化所有的卡,并让卡进入就绪状态 //返回值:错误代码 SD_Error SD_InitializeCards(void) { SD_Error errorstatus=SD_OK; u16 rca = 0x01; if (SDIO_GetPowerState() == SDIO_PowerState_OFF) //检查电源状态,确保为上电状态 { errorstatus = SD_REQUEST_NOT_APPLICABLE; return(errorstatus); } if(SDIO_SECURE_DIGITAL_IO_CARD!=CardType) //非SECURE_DIGITAL_IO_CARD { SDIO_CmdInitStructure.SDIO_Argument = 0x0;//发送CMD2,取得CID,长响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ALL_SEND_CID; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure);//发送CMD2,取得CID,长响应 errorstatus=CmdResp2Error(); //等待R2响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 CID_Tab[0]=SDIO->RESP1; CID_Tab[1]=SDIO->RESP2; CID_Tab[2]=SDIO->RESP3; CID_Tab[3]=SDIO->RESP4; } if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_SECURE_DIGITAL_IO_COMBO_CARD==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType))//判断卡类型 { SDIO_CmdInitStructure.SDIO_Argument = 0x00;//发送CMD3,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR; //cmd3 SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r6 SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); //发送CMD3,短响应 errorstatus=CmdResp6Error(SD_CMD_SET_REL_ADDR,&rca);//等待R6响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 } if (SDIO_MULTIMEDIA_CARD==CardType) { SDIO_CmdInitStructure.SDIO_Argument = (u32)(rca<<16);//发送CMD3,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR; //cmd3 SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r6 SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); //发送CMD3,短响应 errorstatus=CmdResp2Error(); //等待R2响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 } if (SDIO_SECURE_DIGITAL_IO_CARD!=CardType) //非SECURE_DIGITAL_IO_CARD { RCA = rca; SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);//发送CMD9+卡RCA,取得CSD,长响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_CSD; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp2Error(); //等待R2响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 CSD_Tab[0]=SDIO->RESP1; CSD_Tab[1]=SDIO->RESP2; CSD_Tab[2]=SDIO->RESP3; CSD_Tab[3]=SDIO->RESP4; } return SD_OK;//卡初始化成功 } //得到卡信息 //cardinfo:卡信息存储区 //返回值:错误状态 SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo) { SD_Error errorstatus=SD_OK; u8 tmp=0; cardinfo->CardType=(u8)CardType; //卡类型 cardinfo->RCA=(u16)RCA; //卡RCA值 tmp=(u8)((CSD_Tab[0]&0xFF000000)>>24); cardinfo->SD_csd.CSDStruct=(tmp&0xC0)>>6; //CSD结构 cardinfo->SD_csd.SysSpecVersion=(tmp&0x3C)>>2; //2.0协议还没定义这部分(为保留),应该是后续协议定义的 cardinfo->SD_csd.Reserved1=tmp&0x03; //2个保留位 tmp=(u8)((CSD_Tab[0]&0x00FF0000)>>16); //第1个字节 cardinfo->SD_csd.TAAC=tmp; //数据读时间1 tmp=(u8)((CSD_Tab[0]&0x0000FF00)>>8); //第2个字节 cardinfo->SD_csd.NSAC=tmp; //数据读时间2 tmp=(u8)(CSD_Tab[0]&0x000000FF); //第3个字节 cardinfo->SD_csd.MaxBusClkFrec=tmp; //传输速度 tmp=(u8)((CSD_Tab[1]&0xFF000000)>>24); //第4个字节 cardinfo->SD_csd.CardComdClasses=tmp<<4; //卡指令类高四位 tmp=(u8)((CSD_Tab[1]&0x00FF0000)>>16); //第5个字节 cardinfo->SD_csd.CardComdClasses|=(tmp&0xF0)>>4;//卡指令类低四位 cardinfo->SD_csd.RdBlockLen=tmp&0x0F; //最大读取数据长度 tmp=(u8)((CSD_Tab[1]&0x0000FF00)>>8); //第6个字节 cardinfo->SD_csd.PartBlockRead=(tmp&0x80)>>7; //允许分块读 cardinfo->SD_csd.WrBlockMisalign=(tmp&0x40)>>6; //写块错位 cardinfo->SD_csd.RdBlockMisalign=(tmp&0x20)>>5; //读块错位 cardinfo->SD_csd.DSRImpl=(tmp&0x10)>>4; cardinfo->SD_csd.Reserved2=0; //保留 if((CardType==SDIO_STD_CAPACITY_SD_CARD_V1_1)||(CardType==SDIO_STD_CAPACITY_SD_CARD_V2_0)||(SDIO_MULTIMEDIA_CARD==CardType))//标准1.1/2.0卡/MMC卡 { cardinfo->SD_csd.DeviceSize=(tmp&0x03)<<10; //C_SIZE(12位) tmp=(u8)(CSD_Tab[1]&0x000000FF); //第7个字节 cardinfo->SD_csd.DeviceSize|=(tmp)<<2; tmp=(u8)((CSD_Tab[2]&0xFF000000)>>24); //第8个字节 cardinfo->SD_csd.DeviceSize|=(tmp&0xC0)>>6; cardinfo->SD_csd.MaxRdCurrentVDDMin=(tmp&0x38)>>3; cardinfo->SD_csd.MaxRdCurrentVDDMax=(tmp&0x07); tmp=(u8)((CSD_Tab[2]&0x00FF0000)>>16); //第9个字节 cardinfo->SD_csd.MaxWrCurrentVDDMin=(tmp&0xE0)>>5; cardinfo->SD_csd.MaxWrCurrentVDDMax=(tmp&0x1C)>>2; cardinfo->SD_csd.DeviceSizeMul=(tmp&0x03)<<1;//C_SIZE_MULT tmp=(u8)((CSD_Tab[2]&0x0000FF00)>>8); //第10个字节 cardinfo->SD_csd.DeviceSizeMul|=(tmp&0x80)>>7; cardinfo->CardCapacity=(cardinfo->SD_csd.DeviceSize+1);//计算卡容量 cardinfo->CardCapacity*=(1<<(cardinfo->SD_csd.DeviceSizeMul+2)); cardinfo->CardBlockSize=1<<(cardinfo->SD_csd.RdBlockLen);//块大小 cardinfo->CardCapacity*=cardinfo->CardBlockSize; }else if(CardType==SDIO_HIGH_CAPACITY_SD_CARD) //高容量卡 { tmp=(u8)(CSD_Tab[1]&0x000000FF); //第7个字节 cardinfo->SD_csd.DeviceSize=(tmp&0x3F)<<16;//C_SIZE tmp=(u8)((CSD_Tab[2]&0xFF000000)>>24); //第8个字节 cardinfo->SD_csd.DeviceSize|=(tmp<<8); tmp=(u8)((CSD_Tab[2]&0x00FF0000)>>16); //第9个字节 cardinfo->SD_csd.DeviceSize|=(tmp); tmp=(u8)((CSD_Tab[2]&0x0000FF00)>>8); //第10个字节 cardinfo->CardCapacity=(long long)(cardinfo->SD_csd.DeviceSize+1)*512*1024;//计算卡容量 cardinfo->CardBlockSize=512; //块大小固定为512字节 } cardinfo->SD_csd.EraseGrSize=(tmp&0x40)>>6; cardinfo->SD_csd.EraseGrMul=(tmp&0x3F)<<1; tmp=(u8)(CSD_Tab[2]&0x000000FF); //第11个字节 cardinfo->SD_csd.EraseGrMul|=(tmp&0x80)>>7; cardinfo->SD_csd.WrProtectGrSize=(tmp&0x7F); tmp=(u8)((CSD_Tab[3]&0xFF000000)>>24); //第12个字节 cardinfo->SD_csd.WrProtectGrEnable=(tmp&0x80)>>7; cardinfo->SD_csd.ManDeflECC=(tmp&0x60)>>5; cardinfo->SD_csd.WrSpeedFact=(tmp&0x1C)>>2; cardinfo->SD_csd.MaxWrBlockLen=(tmp&0x03)<<2; tmp=(u8)((CSD_Tab[3]&0x00FF0000)>>16); //第13个字节 cardinfo->SD_csd.MaxWrBlockLen|=(tmp&0xC0)>>6; cardinfo->SD_csd.WriteBlockPaPartial=(tmp&0x20)>>5; cardinfo->SD_csd.Reserved3=0; cardinfo->SD_csd.ContentProtectAppli=(tmp&0x01); tmp=(u8)((CSD_Tab[3]&0x0000FF00)>>8); //第14个字节 cardinfo->SD_csd.FileFormatGrouop=(tmp&0x80)>>7; cardinfo->SD_csd.CopyFlag=(tmp&0x40)>>6; cardinfo->SD_csd.PermWrProtect=(tmp&0x20)>>5; cardinfo->SD_csd.TempWrProtect=(tmp&0x10)>>4; cardinfo->SD_csd.FileFormat=(tmp&0x0C)>>2; cardinfo->SD_csd.ECC=(tmp&0x03); tmp=(u8)(CSD_Tab[3]&0x000000FF); //第15个字节 cardinfo->SD_csd.CSD_CRC=(tmp&0xFE)>>1; cardinfo->SD_csd.Reserved4=1; tmp=(u8)((CID_Tab[0]&0xFF000000)>>24); //第0个字节 cardinfo->SD_cid.ManufacturerID=tmp; tmp=(u8)((CID_Tab[0]&0x00FF0000)>>16); //第1个字节 cardinfo->SD_cid.OEM_AppliID=tmp<<8; tmp=(u8)((CID_Tab[0]&0x000000FF00)>>8); //第2个字节 cardinfo->SD_cid.OEM_AppliID|=tmp; tmp=(u8)(CID_Tab[0]&0x000000FF); //第3个字节 cardinfo->SD_cid.ProdName1=tmp<<24; tmp=(u8)((CID_Tab[1]&0xFF000000)>>24); //第4个字节 cardinfo->SD_cid.ProdName1|=tmp<<16; tmp=(u8)((CID_Tab[1]&0x00FF0000)>>16); //第5个字节 cardinfo->SD_cid.ProdName1|=tmp<<8; tmp=(u8)((CID_Tab[1]&0x0000FF00)>>8); //第6个字节 cardinfo->SD_cid.ProdName1|=tmp; tmp=(u8)(CID_Tab[1]&0x000000FF); //第7个字节 cardinfo->SD_cid.ProdName2=tmp; tmp=(u8)((CID_Tab[2]&0xFF000000)>>24); //第8个字节 cardinfo->SD_cid.ProdRev=tmp; tmp=(u8)((CID_Tab[2]&0x00FF0000)>>16); //第9个字节 cardinfo->SD_cid.ProdSN=tmp<<24; tmp=(u8)((CID_Tab[2]&0x0000FF00)>>8); //第10个字节 cardinfo->SD_cid.ProdSN|=tmp<<16; tmp=(u8)(CID_Tab[2]&0x000000FF); //第11个字节 cardinfo->SD_cid.ProdSN|=tmp<<8; tmp=(u8)((CID_Tab[3]&0xFF000000)>>24); //第12个字节 cardinfo->SD_cid.ProdSN|=tmp; tmp=(u8)((CID_Tab[3]&0x00FF0000)>>16); //第13个字节 cardinfo->SD_cid.Reserved1|=(tmp&0xF0)>>4; cardinfo->SD_cid.ManufactDate=(tmp&0x0F)<<8; tmp=(u8)((CID_Tab[3]&0x0000FF00)>>8); //第14个字节 cardinfo->SD_cid.ManufactDate|=tmp; tmp=(u8)(CID_Tab[3]&0x000000FF); //第15个字节 cardinfo->SD_cid.CID_CRC=(tmp&0xFE)>>1; cardinfo->SD_cid.Reserved2=1; return errorstatus; } //设置SDIO总线宽度(MMC卡不支持4bit模式) //wmode:位宽模式.0,1位数据宽度;1,4位数据宽度;2,8位数据宽度 //返回值:SD卡错误状态 //设置SDIO总线宽度(MMC卡不支持4bit模式) // @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC) // @arg SDIO_BusWide_4b: 4-bit data transfer // @arg SDIO_BusWide_1b: 1-bit data transfer (默认) //返回值:SD卡错误状态 SD_Error SD_EnableWideBusOperation(u32 WideMode) { SD_Error errorstatus=SD_OK; if (SDIO_MULTIMEDIA_CARD == CardType) { errorstatus = SD_UNSUPPORTED_FEATURE; return(errorstatus); } else if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType)) { if (SDIO_BusWide_8b == WideMode) //2.0 sd不支持8bits { errorstatus = SD_UNSUPPORTED_FEATURE; return(errorstatus); } else { errorstatus=SDEnWideBus(WideMode); if(SD_OK==errorstatus) { SDIO->CLKCR&=~(3<<11); //清除之前的位宽设置 SDIO->CLKCR|=WideMode;//1位/4位总线宽度 SDIO->CLKCR|=0<<14; //不开启硬件流控制 } } } return errorstatus; } //设置SD卡工作模式 //Mode: //返回值:错误状态 SD_Error SD_SetDeviceMode(u32 Mode) { SD_Error errorstatus = SD_OK; if((Mode==SD_DMA_MODE)||(Mode==SD_POLLING_MODE))DeviceMode=Mode; else errorstatus=SD_INVALID_PARAMETER; return errorstatus; } //选卡 //发送CMD7,选择相对地址(rca)为addr的卡,取消其他卡.如果为0,则都不选择. //addr:卡的RCA地址 SD_Error SD_SelectDeselect(u32 addr) { SDIO_CmdInitStructure.SDIO_Argument = addr;//发送CMD7,选择卡,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEL_DESEL_CARD; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure);//发送CMD7,选择卡,短响应 return CmdResp1Error(SD_CMD_SEL_DESEL_CARD); } //SD卡读取一个块 //buf:读数据缓存区(必须4字节对齐!!) //addr:读取地址 //blksize:块大小 SD_Error SD_ReadBlock(u8 *buf,long long addr,u16 blksize) { SD_Error errorstatus=SD_OK; u8 power; u32 count=0,*tempbuff=(u32*)buf;//转换为u32指针 u32 timeout=SDIO_DATATIMEOUT; if(NULL==buf) return SD_INVALID_PARAMETER; SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA) if(CardType==SDIO_HIGH_CAPACITY_SD_CARD)//大容量卡 { blksize=512; addr>>=9; } SDIO_DataInitStructure.SDIO_DataBlockSize= SDIO_DataBlockSize_1b ;//清除DPSM状态机配置 SDIO_DataInitStructure.SDIO_DataLength= 0 ; SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ; SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable; SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard; SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block; SDIO_DataConfig(&SDIO_DataInitStructure); if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了 if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0)) { power=convert_from_bytes_to_power_of_two(blksize); SDIO_CmdInitStructure.SDIO_Argument = blksize; SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure);//发送CMD16+设置数据长度为blksize,短响应 errorstatus=CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 }else return SD_INVALID_PARAMETER; SDIO_DataInitStructure.SDIO_DataBlockSize= power<<4 ;//清除DPSM状态机配置 SDIO_DataInitStructure.SDIO_DataLength= blksize ; SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ; SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable; SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToSDIO; SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block; SDIO_DataConfig(&SDIO_DataInitStructure); SDIO_CmdInitStructure.SDIO_Argument = addr; SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_SINGLE_BLOCK; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure);//发送CMD17+从addr地址出读取数据,短响应 errorstatus=CmdResp1Error(SD_CMD_READ_SINGLE_BLOCK);//等待R1响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 if(DeviceMode==SD_POLLING_MODE) //查询模式,轮询数据 { INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!) while(!(SDIO->STA&((1<<5)|(1<<1)|(1<<3)|(1<<10)|(1<<9))))//无上溢/CRC/超时/完成(标志)/起始位错误 { if(SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET) //接收区半满,表示至少存了8个字 { for(count=0;count<8;count++) //循环读取数据 { *(tempbuff+count)=SDIO->FIFO; } tempbuff+=8; timeout=0X7FFFFF; //读数据溢出时间 }else //处理超时 { if(timeout==0)return SD_DATA_TIMEOUT; timeout--; } } if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET) //数据超时错误 { SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清错误标志 return SD_DATA_TIMEOUT; }else if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET) //数据块CRC错误 { SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志 return SD_DATA_CRC_FAIL; }else if(SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET) //接收fifo上溢错误 { SDIO_ClearFlag(SDIO_FLAG_RXOVERR); //清错误标志 return SD_RX_OVERRUN; }else if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET) //接收起始位错误 { SDIO_ClearFlag(SDIO_FLAG_STBITERR);//清错误标志 return SD_START_BIT_ERR; } while(SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) //FIFO里面,还存在可用数据 { *tempbuff=SDIO->FIFO; //循环读取数据 tempbuff++; } INTX_ENABLE();//开启总中断 SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 }else if(DeviceMode==SD_DMA_MODE) { TransferError=SD_OK; StopCondition=0; //单块读,不需要发送停止传输指令 TransferEnd=0; //传输结束标置位,在中断服务置1 SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<5)|(1<<9); //配置需要的中断 SDIO->DCTRL|=1<<3; //SDIO DMA使能 SD_DMA_Config((u32*)buf,blksize,DMA_DIR_PeripheralToMemory); while(((DMA2->LISR&(1<<27))==RESET)&&(TransferEnd==0)&&(TransferError==SD_OK)&&timeout)timeout--;//等待传输完成 if(timeout==0)return SD_DATA_TIMEOUT;//超时 if(TransferError!=SD_OK)errorstatus=TransferError; } return errorstatus; } //SD卡读取多个块 //buf:读数据缓存区 //addr:读取地址 //blksize:块大小 //nblks:要读取的块数 //返回值:错误状态 __align(4) u32 *tempbuff; SD_Error SD_ReadMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks) { SD_Error errorstatus=SD_OK; u8 power; u32 count=0; u32 timeout=SDIO_DATATIMEOUT; tempbuff=(u32*)buf;//转换为u32指针 SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA) if(CardType==SDIO_HIGH_CAPACITY_SD_CARD)//大容量卡 { blksize=512; addr>>=9; } SDIO_DataInitStructure.SDIO_DataBlockSize= 0; ;//清除DPSM状态机配置 SDIO_DataInitStructure.SDIO_DataLength= 0 ; SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ; SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable; SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard; SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block; SDIO_DataConfig(&SDIO_DataInitStructure); if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了 if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0)) { power=convert_from_bytes_to_power_of_two(blksize); SDIO_CmdInitStructure.SDIO_Argument = blksize;//发送CMD16+设置数据长度为blksize,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 }else return SD_INVALID_PARAMETER; if(nblks>1) //多块读 { if(nblks*blksize>SD_MAX_DATA_LENGTH)return SD_INVALID_PARAMETER;//判断是否超过最大接收长度 SDIO_DataInitStructure.SDIO_DataBlockSize= power<<4; ;//nblks*blksize,512块大小,卡到控制器 SDIO_DataInitStructure.SDIO_DataLength= nblks*blksize ; SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ; SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable; SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToSDIO; SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block; SDIO_DataConfig(&SDIO_DataInitStructure); SDIO_CmdInitStructure.SDIO_Argument = addr;//发送CMD18+从addr地址出读取数据,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_MULT_BLOCK; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_READ_MULT_BLOCK);//等待R1响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 if(DeviceMode==SD_POLLING_MODE) { INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!) while(!(SDIO->STA&((1<<5)|(1<<1)|(1<<3)|(1<<8)|(1<<9))))//无上溢/CRC/超时/完成(标志)/起始位错误 { if(SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET) //接收区半满,表示至少存了8个字 { for(count=0;count<8;count++) //循环读取数据 { *(tempbuff+count)=SDIO->FIFO; } tempbuff+=8; timeout=0X7FFFFF; //读数据溢出时间 }else //处理超时 { if(timeout==0)return SD_DATA_TIMEOUT; timeout--; } } if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET) //数据超时错误 { SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清错误标志 return SD_DATA_TIMEOUT; }else if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET) //数据块CRC错误 { SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志 return SD_DATA_CRC_FAIL; }else if(SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET) //接收fifo上溢错误 { SDIO_ClearFlag(SDIO_FLAG_RXOVERR); //清错误标志 return SD_RX_OVERRUN; }else if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET) //接收起始位错误 { SDIO_ClearFlag(SDIO_FLAG_STBITERR);//清错误标志 return SD_START_BIT_ERR; } while(SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) //FIFO里面,还存在可用数据 { *tempbuff=SDIO->FIFO; //循环读取数据 tempbuff++; } if(SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET) //接收结束 { if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType)) { SDIO_CmdInitStructure.SDIO_Argument = 0;//发送CMD12+结束传输 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_STOP_TRANSMISSION);//等待R1响应 if(errorstatus!=SD_OK)return errorstatus; } } INTX_ENABLE();//开启总中断 SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 }else if(DeviceMode==SD_DMA_MODE) { TransferError=SD_OK; StopCondition=1; //多块读,需要发送停止传输指令 TransferEnd=0; //传输结束标置位,在中断服务置1 SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<5)|(1<<9); //配置需要的中断 SDIO->DCTRL|=1<<3; //SDIO DMA使能 SD_DMA_Config((u32*)buf,nblks*blksize,DMA_DIR_PeripheralToMemory); while(((DMA2->LISR&(1<<27))==RESET)&&timeout)timeout--;//等待传输完成 if(timeout==0)return SD_DATA_TIMEOUT;//超时 while((TransferEnd==0)&&(TransferError==SD_OK)); if(TransferError!=SD_OK)errorstatus=TransferError; } } return errorstatus; } //SD卡写1个块 //buf:数据缓存区 //addr:写地址 //blksize:块大小 //返回值:错误状态 SD_Error SD_WriteBlock(u8 *buf,long long addr, u16 blksize) { SD_Error errorstatus = SD_OK; u8 power=0,cardstate=0; u32 timeout=0,bytestransferred=0; u32 cardstatus=0,count=0,restwords=0; u32 tlen=blksize; //总长度(字节) u32*tempbuff=(u32*)buf; if(buf==NULL)return SD_INVALID_PARAMETER;//参数错误 SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA) SDIO_DataInitStructure.SDIO_DataBlockSize= 0; ;//清除DPSM状态机配置 SDIO_DataInitStructure.SDIO_DataLength= 0 ; SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ; SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable; SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard; SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block; SDIO_DataConfig(&SDIO_DataInitStructure); if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了 if(CardType==SDIO_HIGH_CAPACITY_SD_CARD) //大容量卡 { blksize=512; addr>>=9; } if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0)) { power=convert_from_bytes_to_power_of_two(blksize); SDIO_CmdInitStructure.SDIO_Argument = blksize;//发送CMD16+设置数据长度为blksize,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 }else return SD_INVALID_PARAMETER; SDIO_CmdInitStructure.SDIO_Argument = (u32)RCA<<16;//发送CMD13,查询卡的状态,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_SEND_STATUS); //等待R1响应 if(errorstatus!=SD_OK)return errorstatus; cardstatus=SDIO->RESP1; timeout=SD_DATATIMEOUT; while(((cardstatus&0x00000100)==0)&&(timeout>0)) //检查READY_FOR_DATA位是否置位 { timeout--; SDIO_CmdInitStructure.SDIO_Argument = (u32)RCA<<16;//发送CMD13,查询卡的状态,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_SEND_STATUS); //等待R1响应 if(errorstatus!=SD_OK)return errorstatus; cardstatus=SDIO->RESP1; } if(timeout==0)return SD_ERROR; SDIO_CmdInitStructure.SDIO_Argument = addr;//发送CMD24,写单块指令,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_SINGLE_BLOCK; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_WRITE_SINGLE_BLOCK);//等待R1响应 if(errorstatus!=SD_OK)return errorstatus; StopCondition=0; //单块写,不需要发送停止传输指令 SDIO_DataInitStructure.SDIO_DataBlockSize= power<<4; ; //blksize, 控制器到卡 SDIO_DataInitStructure.SDIO_DataLength= blksize ; SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ; SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable; SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard; SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block; SDIO_DataConfig(&SDIO_DataInitStructure); timeout=SDIO_DATATIMEOUT; if (DeviceMode == SD_POLLING_MODE) { INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!) while(!(SDIO->STA&((1<<10)|(1<<4)|(1<<1)|(1<<3)|(1<<9))))//数据块发送成功/下溢/CRC/超时/起始位错误 { if(SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET) //发送区半空,表示至少存了8个字 { if((tlen-bytestransferred)<SD_HALFFIFOBYTES)//不够32字节了 { restwords=((tlen-bytestransferred)%4==0)?((tlen-bytestransferred)/4):((tlen-bytestransferred)/4+1); for(count=0;count<restwords;count++,tempbuff++,bytestransferred+=4) { SDIO->FIFO=*tempbuff; } }else { for(count=0;count<8;count++) { SDIO->FIFO=*(tempbuff+count); } tempbuff+=8; bytestransferred+=32; } timeout=0X3FFFFFFF; //写数据溢出时间 }else { if(timeout==0)return SD_DATA_TIMEOUT; timeout--; } } if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET) //数据超时错误 { SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清错误标志 return SD_DATA_TIMEOUT; }else if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET) //数据块CRC错误 { SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志 return SD_DATA_CRC_FAIL; }else if(SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET) //接收fifo下溢错误 { SDIO_ClearFlag(SDIO_FLAG_TXUNDERR); //清错误标志 return SD_TX_UNDERRUN; }else if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET) //接收起始位错误 { SDIO_ClearFlag(SDIO_FLAG_STBITERR);//清错误标志 return SD_START_BIT_ERR; } INTX_ENABLE();//开启总中断 SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 }else if(DeviceMode==SD_DMA_MODE) { TransferError=SD_OK; StopCondition=0; //单块写,不需要发送停止传输指令 TransferEnd=0; //传输结束标置位,在中断服务置1 SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<4)|(1<<9); //配置产生数据接收完成中断 SD_DMA_Config((u32*)buf,blksize,DMA_DIR_MemoryToPeripheral); //SDIO DMA配置 SDIO->DCTRL|=1<<3; //SDIO DMA使能. while(((DMA2->LISR&(1<<27))==RESET)&&timeout)timeout--;//等待传输完成 if(timeout==0) { SD_Init(); //重新初始化SD卡,可以解决写入死机的问题 return SD_DATA_TIMEOUT; //超时 } timeout=SDIO_DATATIMEOUT; while((TransferEnd==0)&&(TransferError==SD_OK)&&timeout)timeout--; if(timeout==0)return SD_DATA_TIMEOUT; //超时 if(TransferError!=SD_OK)return TransferError; } SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 errorstatus=IsCardProgramming(&cardstate); while((errorstatus==SD_OK)&&((cardstate==SD_CARD_PROGRAMMING)||(cardstate==SD_CARD_RECEIVING))) { errorstatus=IsCardProgramming(&cardstate); } return errorstatus; } //SD卡写多个块 //buf:数据缓存区 //addr:写地址 //blksize:块大小 //nblks:要写入的块数 //返回值:错误状态 SD_Error SD_WriteMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks) { SD_Error errorstatus = SD_OK; u8 power = 0, cardstate = 0; u32 timeout=0,bytestransferred=0; u32 count = 0, restwords = 0; u32 tlen=nblks*blksize; //总长度(字节) u32 *tempbuff = (u32*)buf; if(buf==NULL)return SD_INVALID_PARAMETER; //参数错误 SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA) SDIO_DataInitStructure.SDIO_DataBlockSize= 0; ; //清除DPSM状态机配置 SDIO_DataInitStructure.SDIO_DataLength= 0 ; SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ; SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable; SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard; SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block; SDIO_DataConfig(&SDIO_DataInitStructure); if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了 if(CardType==SDIO_HIGH_CAPACITY_SD_CARD)//大容量卡 { blksize=512; addr>>=9; } if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0)) { power=convert_from_bytes_to_power_of_two(blksize); SDIO_CmdInitStructure.SDIO_Argument = blksize; //发送CMD16+设置数据长度为blksize,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应 if(errorstatus!=SD_OK)return errorstatus; //响应错误 }else return SD_INVALID_PARAMETER; if(nblks>1) { if(nblks*blksize>SD_MAX_DATA_LENGTH)return SD_INVALID_PARAMETER; if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType)) { //提高性能 SDIO_CmdInitStructure.SDIO_Argument = (u32)RCA<<16; //发送ACMD55,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_APP_CMD); //等待R1响应 if(errorstatus!=SD_OK)return errorstatus; SDIO_CmdInitStructure.SDIO_Argument =nblks; //发送CMD23,设置块数量,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCK_COUNT; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_SET_BLOCK_COUNT);//等待R1响应 if(errorstatus!=SD_OK)return errorstatus; } SDIO_CmdInitStructure.SDIO_Argument =addr; //发送CMD25,多块写指令,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_MULT_BLOCK; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_WRITE_MULT_BLOCK); //等待R1响应 if(errorstatus!=SD_OK)return errorstatus; SDIO_DataInitStructure.SDIO_DataBlockSize= power<<4; ; //blksize, 控制器到卡 SDIO_DataInitStructure.SDIO_DataLength= nblks*blksize ; SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ; SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable; SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard; SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block; SDIO_DataConfig(&SDIO_DataInitStructure); if(DeviceMode==SD_POLLING_MODE) { timeout=SDIO_DATATIMEOUT; INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!) while(!(SDIO->STA&((1<<4)|(1<<1)|(1<<8)|(1<<3)|(1<<9))))//下溢/CRC/数据结束/超时/起始位错误 { if(SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET) //发送区半空,表示至少存了8字(32字节) { if((tlen-bytestransferred)<SD_HALFFIFOBYTES)//不够32字节了 { restwords=((tlen-bytestransferred)%4==0)?((tlen-bytestransferred)/4):((tlen-bytestransferred)/4+1); for(count=0;count<restwords;count++,tempbuff++,bytestransferred+=4) { SDIO->FIFO=*tempbuff; } }else //发送区半空,可以发送至少8字(32字节)数据 { for(count=0;count<SD_HALFFIFO;count++) { SDIO->FIFO=*(tempbuff+count); } tempbuff+=SD_HALFFIFO; bytestransferred+=SD_HALFFIFOBYTES; } timeout=0X3FFFFFFF; //写数据溢出时间 }else { if(timeout==0)return SD_DATA_TIMEOUT; timeout--; } } if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET) //数据超时错误 { SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清错误标志 return SD_DATA_TIMEOUT; }else if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET) //数据块CRC错误 { SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志 return SD_DATA_CRC_FAIL; }else if(SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET) //接收fifo下溢错误 { SDIO_ClearFlag(SDIO_FLAG_TXUNDERR); //清错误标志 return SD_TX_UNDERRUN; }else if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET) //接收起始位错误 { SDIO_ClearFlag(SDIO_FLAG_STBITERR);//清错误标志 return SD_START_BIT_ERR; } if(SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET) //发送结束 { if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType)) { SDIO_CmdInitStructure.SDIO_Argument =0;//发送CMD12+结束传输 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_STOP_TRANSMISSION);//等待R1响应 if(errorstatus!=SD_OK)return errorstatus; } } INTX_ENABLE();//开启总中断 SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 }else if(DeviceMode==SD_DMA_MODE) { TransferError=SD_OK; StopCondition=1; //多块写,需要发送停止传输指令 TransferEnd=0; //传输结束标置位,在中断服务置1 SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<4)|(1<<9); //配置产生数据接收完成中断 SD_DMA_Config((u32*)buf,nblks*blksize,DMA_DIR_MemoryToPeripheral); //SDIO DMA配置 SDIO->DCTRL|=1<<3; //SDIO DMA使能. timeout=SDIO_DATATIMEOUT; while(((DMA2->LISR&(1<<27))==RESET)&&timeout)timeout--;//等待传输完成 if(timeout==0) //超时 { SD_Init(); //重新初始化SD卡,可以解决写入死机的问题 return SD_DATA_TIMEOUT; //超时 } timeout=SDIO_DATATIMEOUT; while((TransferEnd==0)&&(TransferError==SD_OK)&&timeout)timeout--; if(timeout==0)return SD_DATA_TIMEOUT; //超时 if(TransferError!=SD_OK)return TransferError; } } SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 errorstatus=IsCardProgramming(&cardstate); while((errorstatus==SD_OK)&&((cardstate==SD_CARD_PROGRAMMING)||(cardstate==SD_CARD_RECEIVING))) { errorstatus=IsCardProgramming(&cardstate); } return errorstatus; } //SDIO中断服务函数 void SDIO_IRQHandler(void) { SD_ProcessIRQSrc();//处理所有SDIO相关中断 } //SDIO中断处理函数 //处理SDIO传输过程中的各种中断事务 //返回值:错误代码 SD_Error SD_ProcessIRQSrc(void) { if(SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)//接收完成中断 { if (StopCondition==1) { SDIO_CmdInitStructure.SDIO_Argument =0;//发送CMD12+结束传输 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); TransferError=CmdResp1Error(SD_CMD_STOP_TRANSMISSION); }else TransferError = SD_OK; SDIO->ICR|=1<<8;//清除完成中断标记 SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断 TransferEnd = 1; return(TransferError); } if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)//数据CRC错误 { SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志 SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断 TransferError = SD_DATA_CRC_FAIL; return(SD_DATA_CRC_FAIL); } if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)//数据超时错误 { SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清中断标志 SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断 TransferError = SD_DATA_TIMEOUT; return(SD_DATA_TIMEOUT); } if(SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)//FIFO上溢错误 { SDIO_ClearFlag(SDIO_FLAG_RXOVERR); //清中断标志 SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断 TransferError = SD_RX_OVERRUN; return(SD_RX_OVERRUN); } if(SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)//FIFO下溢错误 { SDIO_ClearFlag(SDIO_FLAG_TXUNDERR); //清中断标志 SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断 TransferError = SD_TX_UNDERRUN; return(SD_TX_UNDERRUN); } if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)//起始位错误 { SDIO_ClearFlag(SDIO_FLAG_STBITERR); //清中断标志 SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断 TransferError = SD_START_BIT_ERR; return(SD_START_BIT_ERR); } return(SD_OK); } //检查CMD0的执行状态 //返回值:sd卡错误码 SD_Error CmdError(void) { SD_Error errorstatus = SD_OK; u32 timeout=SDIO_CMD0TIMEOUT; while(timeout--) { if(SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) != RESET)break; //命令已发送(无需响应) } if(timeout==0)return SD_CMD_RSP_TIMEOUT; SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 return errorstatus; } //检查R7响应的错误状态 //返回值:sd卡错误码 SD_Error CmdResp7Error(void) { SD_Error errorstatus=SD_OK; u32 status; u32 timeout=SDIO_CMD0TIMEOUT; while(timeout--) { status=SDIO->STA; if(status&((1<<0)|(1<<2)|(1<<6)))break;//CRC错误/命令响应超时/已经收到响应(CRC校验成功) } if((timeout==0)||(status&(1<<2))) //响应超时 { errorstatus=SD_CMD_RSP_TIMEOUT; //当前卡不是2.0兼容卡,或者不支持设定的电压范围 SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除命令响应超时标志 return errorstatus; } if(status&1<<6) //成功接收到响应 { errorstatus=SD_OK; SDIO_ClearFlag(SDIO_FLAG_CMDREND); //清除响应标志 } return errorstatus; } //检查R1响应的错误状态 //cmd:当前命令 //返回值:sd卡错误码 SD_Error CmdResp1Error(u8 cmd) { u32 status; while(1) { status=SDIO->STA; if(status&((1<<0)|(1<<2)|(1<<6)))break;//CRC错误/命令响应超时/已经收到响应(CRC校验成功) } if(SDIO_GetFlagStatus(SDIO_FLAG_CTIMEOUT) != RESET) //响应超时 { SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除命令响应超时标志 return SD_CMD_RSP_TIMEOUT; } if(SDIO_GetFlagStatus(SDIO_FLAG_CCRCFAIL) != RESET) //CRC错误 { SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL); //清除标志 return SD_CMD_CRC_FAIL; } if(SDIO->RESPCMD!=cmd)return SD_ILLEGAL_CMD;//命令不匹配 SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 return (SD_Error)(SDIO->RESP1&SD_OCR_ERRORBITS);//返回卡响应 } //检查R3响应的错误状态 //返回值:错误状态 SD_Error CmdResp3Error(void) { u32 status; while(1) { status=SDIO->STA; if(status&((1<<0)|(1<<2)|(1<<6)))break;//CRC错误/命令响应超时/已经收到响应(CRC校验成功) } if(SDIO_GetFlagStatus(SDIO_FLAG_CTIMEOUT) != RESET) //响应超时 { SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除命令响应超时标志 return SD_CMD_RSP_TIMEOUT; } SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 return SD_OK; } //检查R2响应的错误状态 //返回值:错误状态 SD_Error CmdResp2Error(void) { SD_Error errorstatus=SD_OK; u32 status; u32 timeout=SDIO_CMD0TIMEOUT; while(timeout--) { status=SDIO->STA; if(status&((1<<0)|(1<<2)|(1<<6)))break;//CRC错误/命令响应超时/已经收到响应(CRC校验成功) } if((timeout==0)||(status&(1<<2))) //响应超时 { errorstatus=SD_CMD_RSP_TIMEOUT; SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除命令响应超时标志 return errorstatus; } if(SDIO_GetFlagStatus(SDIO_FLAG_CCRCFAIL) != RESET) //CRC错误 { errorstatus=SD_CMD_CRC_FAIL; SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL); //清除响应标志 } SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 return errorstatus; } //检查R6响应的错误状态 //cmd:之前发送的命令 //prca:卡返回的RCA地址 //返回值:错误状态 SD_Error CmdResp6Error(u8 cmd,u16*prca) { SD_Error errorstatus=SD_OK; u32 status; u32 rspr1; while(1) { status=SDIO->STA; if(status&((1<<0)|(1<<2)|(1<<6)))break;//CRC错误/命令响应超时/已经收到响应(CRC校验成功) } if(SDIO_GetFlagStatus(SDIO_FLAG_CTIMEOUT) != RESET) //响应超时 { SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除命令响应超时标志 return SD_CMD_RSP_TIMEOUT; } if(SDIO_GetFlagStatus(SDIO_FLAG_CCRCFAIL) != RESET) //CRC错误 { SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL); //清除响应标志 return SD_CMD_CRC_FAIL; } if(SDIO->RESPCMD!=cmd) //判断是否响应cmd命令 { return SD_ILLEGAL_CMD; } SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 rspr1=SDIO->RESP1; //得到响应 if(SD_ALLZERO==(rspr1&(SD_R6_GENERAL_UNKNOWN_ERROR|SD_R6_ILLEGAL_CMD|SD_R6_COM_CRC_FAILED))) { *prca=(u16)(rspr1>>16); //右移16位得到,rca return errorstatus; } if(rspr1&SD_R6_GENERAL_UNKNOWN_ERROR)return SD_GENERAL_UNKNOWN_ERROR; if(rspr1&SD_R6_ILLEGAL_CMD)return SD_ILLEGAL_CMD; if(rspr1&SD_R6_COM_CRC_FAILED)return SD_COM_CRC_FAILED; return errorstatus; } //SDIO使能宽总线模式 //enx:0,不使能;1,使能; //返回值:错误状态 SD_Error SDEnWideBus(u8 enx) { SD_Error errorstatus = SD_OK; u32 scr[2]={0,0}; u8 arg=0X00; if(enx)arg=0X02; else arg=0X00; if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//SD卡处于LOCKED状态 errorstatus=FindSCR(RCA,scr); //得到SCR寄存器数据 if(errorstatus!=SD_OK)return errorstatus; if((scr[1]&SD_WIDE_BUS_SUPPORT)!=SD_ALLZERO) //支持宽总线 { SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;//发送CMD55+RCA,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_APP_CMD); if(errorstatus!=SD_OK)return errorstatus; SDIO_CmdInitStructure.SDIO_Argument = arg;//发送ACMD6,短响应,参数:10,4位;00,1位. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH); return errorstatus; }else return SD_REQUEST_NOT_APPLICABLE; //不支持宽总线设置 } //检查卡是否正在执行写操作 //pstatus:当前状态. //返回值:错误代码 SD_Error IsCardProgramming(u8 *pstatus) { vu32 respR1 = 0, status = 0; SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16; //卡相对地址参数 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;//发送CMD13 SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); status=SDIO->STA; while(!(status&((1<<0)|(1<<6)|(1<<2))))status=SDIO->STA;//等待操作完成 if(SDIO_GetFlagStatus(SDIO_FLAG_CCRCFAIL) != RESET) //CRC检测失败 { SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL); //清除错误标记 return SD_CMD_CRC_FAIL; } if(SDIO_GetFlagStatus(SDIO_FLAG_CTIMEOUT) != RESET) //命令超时 { SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除错误标记 return SD_CMD_RSP_TIMEOUT; } if(SDIO->RESPCMD!=SD_CMD_SEND_STATUS)return SD_ILLEGAL_CMD; SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 respR1=SDIO->RESP1; *pstatus=(u8)((respR1>>9)&0x0000000F); return SD_OK; } //读取当前卡状态 //pcardstatus:卡状态 //返回值:错误代码 SD_Error SD_SendStatus(uint32_t *pcardstatus) { SD_Error errorstatus = SD_OK; if(pcardstatus==NULL) { errorstatus=SD_INVALID_PARAMETER; return errorstatus; } SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;//发送CMD13,短响应 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS; SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_SEND_STATUS); //查询响应状态 if(errorstatus!=SD_OK)return errorstatus; *pcardstatus=SDIO->RESP1;//读取响应值 return errorstatus; } //返回SD卡的状态 //返回值:SD卡状态 SDCardState SD_GetState(void) { u32 resp1=0; if(SD_SendStatus(&resp1)!=SD_OK)return SD_CARD_ERROR; else return (SDCardState)((resp1>>9) & 0x0F); } //查找SD卡的SCR寄存器值 //rca:卡相对地址 //pscr:数据缓存区(存储SCR内容) //返回值:错误状态 SD_Error FindSCR(u16 rca,u32 *pscr) { u32 index = 0; SD_Error errorstatus = SD_OK; u32 tempscr[2]={0,0}; SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8; //发送CMD16,短响应,设置Block Size为8字节 SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN; // cmd16 SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1 SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_SET_BLOCKLEN); if(errorstatus!=SD_OK)return errorstatus; SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16; SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;//发送CMD55,短响应 SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_APP_CMD); if(errorstatus!=SD_OK)return errorstatus; SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT; SDIO_DataInitStructure.SDIO_DataLength = 8; //8个字节长度,block为8字节,SD卡到SDIO. SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b ; //块大小8byte SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO; SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block; SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable; SDIO_DataConfig(&SDIO_DataInitStructure); SDIO_CmdInitStructure.SDIO_Argument = 0x0; SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_SEND_SCR; //发送ACMD51,短响应,参数为0 SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1 SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable; SDIO_SendCommand(&SDIO_CmdInitStructure); errorstatus=CmdResp1Error(SD_CMD_SD_APP_SEND_SCR); if(errorstatus!=SD_OK)return errorstatus; while(!(SDIO->STA&(SDIO_FLAG_RXOVERR|SDIO_FLAG_DCRCFAIL|SDIO_FLAG_DTIMEOUT|SDIO_FLAG_DBCKEND|SDIO_FLAG_STBITERR))) { if(SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)//接收FIFO数据可用 { *(tempscr+index)=SDIO->FIFO; //读取FIFO内容 index++; if(index>=2)break; } } if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET) //数据超时错误 { SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清错误标志 return SD_DATA_TIMEOUT; }else if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET) //数据块CRC错误 { SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志 return SD_DATA_CRC_FAIL; }else if(SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET) //接收fifo上溢错误 { SDIO_ClearFlag(SDIO_FLAG_RXOVERR); //清错误标志 return SD_RX_OVERRUN; }else if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET) //接收起始位错误 { SDIO_ClearFlag(SDIO_FLAG_STBITERR);//清错误标志 return SD_START_BIT_ERR; } SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记 //把数据顺序按8位为单位倒过来. *(pscr+1)=((tempscr[0]&SD_0TO7BITS)<<24)|((tempscr[0]&SD_8TO15BITS)<<8)|((tempscr[0]&SD_16TO23BITS)>>8)|((tempscr[0]&SD_24TO31BITS)>>24); *(pscr)=((tempscr[1]&SD_0TO7BITS)<<24)|((tempscr[1]&SD_8TO15BITS)<<8)|((tempscr[1]&SD_16TO23BITS)>>8)|((tempscr[1]&SD_24TO31BITS)>>24); return errorstatus; } //得到NumberOfBytes以2为底的指数. //NumberOfBytes:字节数. //返回值:以2为底的指数值 u8 convert_from_bytes_to_power_of_two(u16 NumberOfBytes) { u8 count=0; while(NumberOfBytes!=1) { NumberOfBytes>>=1; count++; } return count; } //配置SDIO DMA //mbuf:存储器地址 //bufsize:传输数据量 //dir:方向;DMA_DIR_MemoryToPeripheral 存储器-->SDIO(写数据);DMA_DIR_PeripheralToMemory SDIO-->存储器(读数据); void SD_DMA_Config(u32*mbuf,u32 bufsize,u32 dir) { DMA_InitTypeDef DMA_InitStructure; while (DMA_GetCmdStatus(DMA2_Stream3) != DISABLE){}//等待DMA可配置 DMA_DeInit(DMA2_Stream3);//清空之前该stream3上的所有中断标志 DMA_InitStructure.DMA_Channel = DMA_Channel_4; //通道选择 DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&SDIO->FIFO;//DMA外设地址 DMA_InitStructure.DMA_Memory0BaseAddr = (u32)mbuf;//DMA 存储器0地址 DMA_InitStructure.DMA_DIR = dir;//存储器到外设模式 DMA_InitStructure.DMA_BufferSize = 0;//数据传输量 DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//外设非增量模式 DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;//存储器增量模式 DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;//外设数据长度:32位 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;//存储器数据长度:32位 DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;// 使用普通模式 DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;//最高优先级 DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable; //FIFO使能 DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;//全FIFO DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC4;//外设突发4次传输 DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_INC4;//存储器突发4次传输 DMA_Init(DMA2_Stream3, &DMA_InitStructure);//初始化DMA Stream DMA_FlowControllerConfig(DMA2_Stream3,DMA_FlowCtrl_Peripheral);//外设流控制 DMA_Cmd(DMA2_Stream3 ,ENABLE);//开启DMA传输 } //读SD卡 //buf:读数据缓存区 //sector:扇区地址 //cnt:扇区个数 //返回值:错误状态;0,正常;其他,错误代码; u8 SD_ReadDisk(u8*buf,u32 sector,u8 cnt) { u8 sta=SD_OK; long long lsector=sector; u8 n; lsector<<=9; if((u32)buf%4!=0) { for(n=0;n<cnt;n++) { sta=SD_ReadBlock(SDIO_DATA_BUFFER,lsector+512*n,512);//单个sector的读操作 memcpy(buf,SDIO_DATA_BUFFER,512); buf+=512; } }else { if(cnt==1)sta=SD_ReadBlock(buf,lsector,512); //单个sector的读操作 else sta=SD_ReadMultiBlocks(buf,lsector,512,cnt);//多个sector } return sta; } //写SD卡 //buf:写数据缓存区 //sector:扇区地址 //cnt:扇区个数 //返回值:错误状态;0,正常;其他,错误代码; u8 SD_WriteDisk(u8*buf,u32 sector,u8 cnt) { u8 sta=SD_OK; u8 n; long long lsector=sector; lsector<<=9; if((u32)buf%4!=0) { for(n=0;n<cnt;n++) { memcpy(SDIO_DATA_BUFFER,buf,512); sta=SD_WriteBlock(SDIO_DATA_BUFFER,lsector+512*n,512);//单个sector的写操作 buf+=512; } }else { if(cnt==1)sta=SD_WriteBlock(buf,lsector,512); //单个sector的写操作 else sta=SD_WriteMultiBlocks(buf,lsector,512,cnt); //多个sector } return sta; }
这是头文件《sdio_sdcard.h》
#ifndef __SDIO_SDCARD_H #define __SDIO_SDCARD_H #include "stm32f4xx.h" //SDIO相关标志位,拷贝自:stm32f4xx_sdio.h #define SDIO_FLAG_CCRCFAIL ((uint32_t)0x00000001) #define SDIO_FLAG_DCRCFAIL ((uint32_t)0x00000002) #define SDIO_FLAG_CTIMEOUT ((uint32_t)0x00000004) #define SDIO_FLAG_DTIMEOUT ((uint32_t)0x00000008) #define SDIO_FLAG_TXUNDERR ((uint32_t)0x00000010) #define SDIO_FLAG_RXOVERR ((uint32_t)0x00000020) #define SDIO_FLAG_CMDREND ((uint32_t)0x00000040) #define SDIO_FLAG_CMDSENT ((uint32_t)0x00000080) #define SDIO_FLAG_DATAEND ((uint32_t)0x00000100) #define SDIO_FLAG_STBITERR ((uint32_t)0x00000200) #define SDIO_FLAG_DBCKEND ((uint32_t)0x00000400) #define SDIO_FLAG_CMDACT ((uint32_t)0x00000800) #define SDIO_FLAG_TXACT ((uint32_t)0x00001000) #define SDIO_FLAG_RXACT ((uint32_t)0x00002000) #define SDIO_FLAG_TXFIFOHE ((uint32_t)0x00004000) #define SDIO_FLAG_RXFIFOHF ((uint32_t)0x00008000) #define SDIO_FLAG_TXFIFOF ((uint32_t)0x00010000) #define SDIO_FLAG_RXFIFOF ((uint32_t)0x00020000) #define SDIO_FLAG_TXFIFOE ((uint32_t)0x00040000) #define SDIO_FLAG_RXFIFOE ((uint32_t)0x00080000) #define SDIO_FLAG_TXDAVL ((uint32_t)0x00100000) #define SDIO_FLAG_RXDAVL ((uint32_t)0x00200000) #define SDIO_FLAG_SDIOIT ((uint32_t)0x00400000) #define SDIO_FLAG_CEATAEND ((uint32_t)0x00800000) //用户配置区 //SDIO时钟计算公式:SDIO_CK时钟=SDIOCLK/[clkdiv+2];其中,SDIOCLK固定为48Mhz //使用DMA模式的时候,传输速率可以到48Mhz(bypass on时),不过如果你的卡不是高速 //卡,可能也会出错,出错就请降低时钟 #define SDIO_INIT_CLK_DIV 0x76 //SDIO初始化频率,最大400Kh #define SDIO_TRANSFER_CLK_DIV 0x00 //SDIO传输频率,该值太小可能会导致读写文件出错 //////////////////////////////////////////////////////////////////////////////////////////////////// //SDIO工作模式定义,通过SD_SetDeviceMode函数设置. #define SD_POLLING_MODE 0 //查询模式,该模式下,如果读写有问题,建议增大SDIO_TRANSFER_CLK_DIV的设置. #define SD_DMA_MODE 1 //DMA模式,该模式下,如果读写有问题,建议增大SDIO_TRANSFER_CLK_DIV的设置. //SDIO 各种错误枚举定义 typedef enum { //特殊错误定义 SD_CMD_CRC_FAIL = (1), /*!< Command response received (but CRC check failed) */ SD_DATA_CRC_FAIL = (2), /*!< Data bock sent/received (CRC check Failed) */ SD_CMD_RSP_TIMEOUT = (3), /*!< Command response timeout */ SD_DATA_TIMEOUT = (4), /*!< Data time out */ SD_TX_UNDERRUN = (5), /*!< Transmit FIFO under-run */ SD_RX_OVERRUN = (6), /*!< Receive FIFO over-run */ SD_START_BIT_ERR = (7), /*!< Start bit not detected on all data signals in widE bus mode */ SD_CMD_OUT_OF_RANGE = (8), /*!< CMD's argument was out of range.*/ SD_ADDR_MISALIGNED = (9), /*!< Misaligned address */ SD_BLOCK_LEN_ERR = (10), /*!< Transferred block length is not allowed for the card or the number of transferred bytes does not match the block length */ SD_ERASE_SEQ_ERR = (11), /*!< An error in the sequence of erase command occurs.*/ SD_BAD_ERASE_PARAM = (12), /*!< An Invalid selection for erase groups */ SD_WRITE_PROT_VIOLATION = (13), /*!< Attempt to program a write protect block */ SD_LOCK_UNLOCK_FAILED = (14), /*!< Sequence or password error has been detected in unlock command or if there was an attempt to access a locked card */ SD_COM_CRC_FAILED = (15), /*!< CRC check of the previous command failed */ SD_ILLEGAL_CMD = (16), /*!< Command is not legal for the card state */ SD_CARD_ECC_FAILED = (17), /*!< Card internal ECC was applied but failed to correct the data */ SD_CC_ERROR = (18), /*!< Internal card controller error */ SD_GENERAL_UNKNOWN_ERROR = (19), /*!< General or Unknown error */ SD_STREAM_READ_UNDERRUN = (20), /*!< The card could not sustain data transfer in stream read operation. */ SD_STREAM_WRITE_OVERRUN = (21), /*!< The card could not sustain data programming in stream mode */ SD_CID_CSD_OVERWRITE = (22), /*!< CID/CSD overwrite error */ SD_WP_ERASE_SKIP = (23), /*!< only partial address space was erased */ SD_CARD_ECC_DISABLED = (24), /*!< Command has been executed without using internal ECC */ SD_ERASE_RESET = (25), /*!< Erase sequence was cleared before executing because an out of erase sequence command was received */ SD_AKE_SEQ_ERROR = (26), /*!< Error in sequence of authentication. */ SD_INVALID_VOLTRANGE = (27), SD_ADDR_OUT_OF_RANGE = (28), SD_SWITCH_ERROR = (29), SD_SDIO_DISABLED = (30), SD_SDIO_FUNCTION_BUSY = (31), SD_SDIO_FUNCTION_FAILED = (32), SD_SDIO_UNKNOWN_FUNCTION = (33), //标准错误定义 SD_INTERNAL_ERROR, SD_NOT_CONFIGURED, SD_REQUEST_PENDING, SD_REQUEST_NOT_APPLICABLE, SD_INVALID_PARAMETER, SD_UNSUPPORTED_FEATURE, SD_UNSUPPORTED_HW, SD_ERROR, SD_OK = 0 } SD_Error; //SD卡CSD寄存器数据 typedef struct { u8 CSDStruct; /*!< CSD structure */ u8 SysSpecVersion; /*!< System specification version */ u8 Reserved1; /*!< Reserved */ u8 TAAC; /*!< Data read access-time 1 */ u8 NSAC; /*!< Data read access-time 2 in CLK cycles */ u8 MaxBusClkFrec; /*!< Max. bus clock frequency */ u16 CardComdClasses; /*!< Card command classes */ u8 RdBlockLen; /*!< Max. read data block length */ u8 PartBlockRead; /*!< Partial blocks for read allowed */ u8 WrBlockMisalign; /*!< Write block misalignment */ u8 RdBlockMisalign; /*!< Read block misalignment */ u8 DSRImpl; /*!< DSR implemented */ u8 Reserved2; /*!< Reserved */ u32 DeviceSize; /*!< Device Size */ u8 MaxRdCurrentVDDMin; /*!< Max. read current @ VDD min */ u8 MaxRdCurrentVDDMax; /*!< Max. read current @ VDD max */ u8 MaxWrCurrentVDDMin; /*!< Max. write current @ VDD min */ u8 MaxWrCurrentVDDMax; /*!< Max. write current @ VDD max */ u8 DeviceSizeMul; /*!< Device size multiplier */ u8 EraseGrSize; /*!< Erase group size */ u8 EraseGrMul; /*!< Erase group size multiplier */ u8 WrProtectGrSize; /*!< Write protect group size */ u8 WrProtectGrEnable; /*!< Write protect group enable */ u8 ManDeflECC; /*!< Manufacturer default ECC */ u8 WrSpeedFact; /*!< Write speed factor */ u8 MaxWrBlockLen; /*!< Max. write data block length */ u8 WriteBlockPaPartial; /*!< Partial blocks for write allowed */ u8 Reserved3; /*!< Reserded */ u8 ContentProtectAppli; /*!< Content protection application */ u8 FileFormatGrouop; /*!< File format group */ u8 CopyFlag; /*!< Copy flag (OTP) */ u8 PermWrProtect; /*!< Permanent write protection */ u8 TempWrProtect; /*!< Temporary write protection */ u8 FileFormat; /*!< File Format */ u8 ECC; /*!< ECC code */ u8 CSD_CRC; /*!< CSD CRC */ u8 Reserved4; /*!< always 1*/ } SD_CSD; //SD卡CID寄存器数据 typedef struct { u8 ManufacturerID; /*!< ManufacturerID */ u16 OEM_AppliID; /*!< OEM/Application ID */ u32 ProdName1; /*!< Product Name part1 */ u8 ProdName2; /*!< Product Name part2*/ u8 ProdRev; /*!< Product Revision */ u32 ProdSN; /*!< Product Serial Number */ u8 Reserved1; /*!< Reserved1 */ u16 ManufactDate; /*!< Manufacturing Date */ u8 CID_CRC; /*!< CID CRC */ u8 Reserved2; /*!< always 1 */ } SD_CID; //SD卡状态 typedef enum { SD_CARD_READY = ((uint32_t)0x00000001), SD_CARD_IDENTIFICATION = ((uint32_t)0x00000002), SD_CARD_STANDBY = ((uint32_t)0x00000003), SD_CARD_TRANSFER = ((uint32_t)0x00000004), SD_CARD_SENDING = ((uint32_t)0x00000005), SD_CARD_RECEIVING = ((uint32_t)0x00000006), SD_CARD_PROGRAMMING = ((uint32_t)0x00000007), SD_CARD_DISCONNECTED = ((uint32_t)0x00000008), SD_CARD_ERROR = ((uint32_t)0x000000FF) }SDCardState; //SD卡信息,包括CSD,CID等数据 typedef struct { SD_CSD SD_csd; SD_CID SD_cid; long long CardCapacity; //SD卡容量,单位:字节,最大支持2^64字节大小的卡. u32 CardBlockSize; //SD卡块大小 u16 RCA; //卡相对地址 u8 CardType; //卡类型 } SD_CardInfo; extern SD_CardInfo SDCardInfo;//SD卡信息 //////////////////////////////////////////////////////////////////////////////////////////////////// //SDIO 指令集 #define SD_CMD_GO_IDLE_STATE ((u8)0) #define SD_CMD_SEND_OP_COND ((u8)1) #define SD_CMD_ALL_SEND_CID ((u8)2) #define SD_CMD_SET_REL_ADDR ((u8)3) /*!< SDIO_SEND_REL_ADDR for SD Card */ #define SD_CMD_SET_DSR ((u8)4) #define SD_CMD_SDIO_SEN_OP_COND ((u8)5) #define SD_CMD_HS_SWITCH ((u8)6) #define SD_CMD_SEL_DESEL_CARD ((u8)7) #define SD_CMD_HS_SEND_EXT_CSD ((u8)8) #define SD_CMD_SEND_CSD ((u8)9) #define SD_CMD_SEND_CID ((u8)10) #define SD_CMD_READ_DAT_UNTIL_STOP ((u8)11) /*!< SD Card doesn't support it */ #define SD_CMD_STOP_TRANSMISSION ((u8)12) #define SD_CMD_SEND_STATUS ((u8)13) #define SD_CMD_HS_BUSTEST_READ ((u8)14) #define SD_CMD_GO_INACTIVE_STATE ((u8)15) #define SD_CMD_SET_BLOCKLEN ((u8)16) #define SD_CMD_READ_SINGLE_BLOCK ((u8)17) #define SD_CMD_READ_MULT_BLOCK ((u8)18) #define SD_CMD_HS_BUSTEST_WRITE ((u8)19) #define SD_CMD_WRITE_DAT_UNTIL_STOP ((u8)20) #define SD_CMD_SET_BLOCK_COUNT ((u8)23) #define SD_CMD_WRITE_SINGLE_BLOCK ((u8)24) #define SD_CMD_WRITE_MULT_BLOCK ((u8)25) #define SD_CMD_PROG_CID ((u8)26) #define SD_CMD_PROG_CSD ((u8)27) #define SD_CMD_SET_WRITE_PROT ((u8)28) #define SD_CMD_CLR_WRITE_PROT ((u8)29) #define SD_CMD_SEND_WRITE_PROT ((u8)30) #define SD_CMD_SD_ERASE_GRP_START ((u8)32) /*!< To set the address of the first write block to be erased. (For SD card only) */ #define SD_CMD_SD_ERASE_GRP_END ((u8)33) /*!< To set the address of the last write block of the continuous range to be erased. (For SD card only) */ #define SD_CMD_ERASE_GRP_START ((u8)35) /*!< To set the address of the first write block to be erased. (For MMC card only spec 3.31) */ #define SD_CMD_ERASE_GRP_END ((u8)36) /*!< To set the address of the last write block of the continuous range to be erased. (For MMC card only spec 3.31) */ #define SD_CMD_ERASE ((u8)38) #define SD_CMD_FAST_IO ((u8)39) /*!< SD Card doesn't support it */ #define SD_CMD_GO_IRQ_STATE ((u8)40) /*!< SD Card doesn't support it */ #define SD_CMD_LOCK_UNLOCK ((u8)42) #define SD_CMD_APP_CMD ((u8)55) #define SD_CMD_GEN_CMD ((u8)56) #define SD_CMD_NO_CMD ((u8)64) /** * @brief Following commands are SD Card Specific commands. * SDIO_APP_CMD :CMD55 should be sent before sending these commands. */ #define SD_CMD_APP_SD_SET_BUSWIDTH ((u8)6) /*!< For SD Card only */ #define SD_CMD_SD_APP_STAUS ((u8)13) /*!< For SD Card only */ #define SD_CMD_SD_APP_SEND_NUM_WRITE_BLOCKS ((u8)22) /*!< For SD Card only */ #define SD_CMD_SD_APP_OP_COND ((u8)41) /*!< For SD Card only */ #define SD_CMD_SD_APP_SET_CLR_CARD_DETECT ((u8)42) /*!< For SD Card only */ #define SD_CMD_SD_APP_SEND_SCR ((u8)51) /*!< For SD Card only */ #define SD_CMD_SDIO_RW_DIRECT ((u8)52) /*!< For SD I/O Card only */ #define SD_CMD_SDIO_RW_EXTENDED ((u8)53) /*!< For SD I/O Card only */ /** * @brief Following commands are SD Card Specific security commands. * SDIO_APP_CMD should be sent before sending these commands. */ #define SD_CMD_SD_APP_GET_MKB ((u8)43) /*!< For SD Card only */ #define SD_CMD_SD_APP_GET_MID ((u8)44) /*!< For SD Card only */ #define SD_CMD_SD_APP_SET_CER_RN1 ((u8)45) /*!< For SD Card only */ #define SD_CMD_SD_APP_GET_CER_RN2 ((u8)46) /*!< For SD Card only */ #define SD_CMD_SD_APP_SET_CER_RES2 ((u8)47) /*!< For SD Card only */ #define SD_CMD_SD_APP_GET_CER_RES1 ((u8)48) /*!< For SD Card only */ #define SD_CMD_SD_APP_SECURE_READ_MULTIPLE_BLOCK ((u8)18) /*!< For SD Card only */ #define SD_CMD_SD_APP_SECURE_WRITE_MULTIPLE_BLOCK ((u8)25) /*!< For SD Card only */ #define SD_CMD_SD_APP_SECURE_ERASE ((u8)38) /*!< For SD Card only */ #define SD_CMD_SD_APP_CHANGE_SECURE_AREA ((u8)49) /*!< For SD Card only */ #define SD_CMD_SD_APP_SECURE_WRITE_MKB ((u8)48) /*!< For SD Card only */ //支持的SD卡定义 #define SDIO_STD_CAPACITY_SD_CARD_V1_1 ((u32)0x00000000) #define SDIO_STD_CAPACITY_SD_CARD_V2_0 ((u32)0x00000001) #define SDIO_HIGH_CAPACITY_SD_CARD ((u32)0x00000002) #define SDIO_MULTIMEDIA_CARD ((u32)0x00000003) #define SDIO_SECURE_DIGITAL_IO_CARD ((u32)0x00000004) #define SDIO_HIGH_SPEED_MULTIMEDIA_CARD ((u32)0x00000005) #define SDIO_SECURE_DIGITAL_IO_COMBO_CARD ((u32)0x00000006) #define SDIO_HIGH_CAPACITY_MMC_CARD ((u32)0x00000007) //SDIO相关参数定义 #define NULL 0 #define SDIO_STATIC_FLAGS ((u32)0x000005FF) #define SDIO_CMD0TIMEOUT ((u32)0x00010000) #define SDIO_DATATIMEOUT ((u32)0xFFFFFFFF) #define SDIO_FIFO_Address ((u32)0x40018080) //Mask for errors Card Status R1 (OCR Register) #define SD_OCR_ADDR_OUT_OF_RANGE ((u32)0x80000000) #define SD_OCR_ADDR_MISALIGNED ((u32)0x40000000) #define SD_OCR_BLOCK_LEN_ERR ((u32)0x20000000) #define SD_OCR_ERASE_SEQ_ERR ((u32)0x10000000) #define SD_OCR_BAD_ERASE_PARAM ((u32)0x08000000) #define SD_OCR_WRITE_PROT_VIOLATION ((u32)0x04000000) #define SD_OCR_LOCK_UNLOCK_FAILED ((u32)0x01000000) #define SD_OCR_COM_CRC_FAILED ((u32)0x00800000) #define SD_OCR_ILLEGAL_CMD ((u32)0x00400000) #define SD_OCR_CARD_ECC_FAILED ((u32)0x00200000) #define SD_OCR_CC_ERROR ((u32)0x00100000) #define SD_OCR_GENERAL_UNKNOWN_ERROR ((u32)0x00080000) #define SD_OCR_STREAM_READ_UNDERRUN ((u32)0x00040000) #define SD_OCR_STREAM_WRITE_OVERRUN ((u32)0x00020000) #define SD_OCR_CID_CSD_OVERWRIETE ((u32)0x00010000) #define SD_OCR_WP_ERASE_SKIP ((u32)0x00008000) #define SD_OCR_CARD_ECC_DISABLED ((u32)0x00004000) #define SD_OCR_ERASE_RESET ((u32)0x00002000) #define SD_OCR_AKE_SEQ_ERROR ((u32)0x00000008) #define SD_OCR_ERRORBITS ((u32)0xFDFFE008) //Masks for R6 Response #define SD_R6_GENERAL_UNKNOWN_ERROR ((u32)0x00002000) #define SD_R6_ILLEGAL_CMD ((u32)0x00004000) #define SD_R6_COM_CRC_FAILED ((u32)0x00008000) #define SD_VOLTAGE_WINDOW_SD ((u32)0x80100000) #define SD_HIGH_CAPACITY ((u32)0x40000000) #define SD_STD_CAPACITY ((u32)0x00000000) #define SD_CHECK_PATTERN ((u32)0x000001AA) #define SD_VOLTAGE_WINDOW_MMC ((u32)0x80FF8000) #define SD_MAX_VOLT_TRIAL ((u32)0x0000FFFF) #define SD_ALLZERO ((u32)0x00000000) #define SD_WIDE_BUS_SUPPORT ((u32)0x00040000) #define SD_SINGLE_BUS_SUPPORT ((u32)0x00010000) #define SD_CARD_LOCKED ((u32)0x02000000) #define SD_CARD_PROGRAMMING ((u32)0x00000007) #define SD_CARD_RECEIVING ((u32)0x00000006) #define SD_DATATIMEOUT ((u32)0xFFFFFFFF) #define SD_0TO7BITS ((u32)0x000000FF) #define SD_8TO15BITS ((u32)0x0000FF00) #define SD_16TO23BITS ((u32)0x00FF0000) #define SD_24TO31BITS ((u32)0xFF000000) #define SD_MAX_DATA_LENGTH ((u32)0x01FFFFFF) #define SD_HALFFIFO ((u32)0x00000008) #define SD_HALFFIFOBYTES ((u32)0x00000020) //Command Class Supported #define SD_CCCC_LOCK_UNLOCK ((u32)0x00000080) #define SD_CCCC_WRITE_PROT ((u32)0x00000040) #define SD_CCCC_ERASE ((u32)0x00000020) //CMD8指令 #define SDIO_SEND_IF_COND ((u32)0x00000008) //////////////////////////////////////////////////////////////////////////////////////////////////// //相关函数定义 SD_Error SD_Init(void); void SDIO_Clock_Set(u8 clkdiv); SD_Error SD_PowerON(void); SD_Error SD_PowerOFF(void); SD_Error SD_InitializeCards(void); SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo); SD_Error SD_EnableWideBusOperation(u32 wmode); SD_Error SD_SetDeviceMode(u32 mode); SD_Error SD_SelectDeselect(u32 addr); SD_Error SD_SendStatus(uint32_t *pcardstatus); SDCardState SD_GetState(void); SD_Error SD_ReadBlock(u8 *buf,long long addr,u16 blksize); SD_Error SD_ReadMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks); SD_Error SD_WriteBlock(u8 *buf,long long addr, u16 blksize); SD_Error SD_WriteMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks); SD_Error SD_ProcessIRQSrc(void); void SD_DMA_Config(u32*mbuf,u32 bufsize,u32 dir); //void SD_DMA_Config(u32*mbuf,u32 bufsize,u8 dir); u8 SD_ReadDisk(u8*buf,u32 sector,u8 cnt); //读SD卡,fatfs/usb调用 u8 SD_WriteDisk(u8*buf,u32 sector,u8 cnt); //写SD卡,fatfs/usb调用 #endif