【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

  1. /*---------------------------------------------------------------------------/
  2. / FatFs - FAT file system module configuration file R0.11a (C)ChaN, 2015
  3. /---------------------------------------------------------------------------*/
  4.  
  5. #define _FFCONF 64180 /* Revision ID */
  6.  
  7. /*---------------------------------------------------------------------------/
  8. / Function Configurations
  9. /---------------------------------------------------------------------------*/
  10.  
  11. #define _FS_READONLY 0 // 是否只读
  12. /* This option switches read-only configuration. (0:Read/Write or 1:Read-only)
  13. / Read-only configuration removes writing API functions, f_write(), f_sync(),
  14. / f_unlink(), f_mkdir(), f_chmod(), f_rename(), f_truncate(), f_getfree()
  15. / and optional writing functions as well. */
  16.  
  17. #define _FS_MINIMIZE 0 // 是否使用裁剪文件
  18. /* This option defines minimization level to remove some basic API functions.
  19. /
  20. / 0: All basic functions are enabled.
  21. / 1: f_stat(), f_getfree(), f_unlink(), f_mkdir(), f_chmod(), f_utime(),
  22. / f_truncate() and f_rename() function are removed.
  23. / 2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1.
  24. / 3: f_lseek() function is removed in addition to 2. */
  25.  
  26. #define _USE_STRFUNC 0 // 是否允许字符串操作
  27. /* This option switches string functions, f_gets(), f_putc(), f_puts() and
  28. / f_printf().
  29. /
  30. / 0: Disable string functions.
  31. / 1: Enable without LF-CRLF conversion.
  32. / 2: Enable with LF-CRLF conversion. */
  33.  
  34. #define _USE_FIND 0 // 切换过滤目录读取功能和相关功能
  35. /* This option switches filtered directory read feature and related functions,
  36. / f_findfirst() and f_findnext(). (0:Disable or 1:Enable) */
  37.  
  38. #define _USE_MKFS 0 // 是否开启格式化功能
  39. /* This option switches f_mkfs() function. (0:Disable or 1:Enable) */
  40.  
  41. #define _USE_FASTSEEK 0 // 是否开启快速索引
  42. /* This option switches fast seek feature. (0:Disable or 1:Enable) */
  43.  
  44. #define _USE_LABEL 0 // 是否开启切换卷标功能
  45. /* This option switches volume label functions, f_getlabel() and f_setlabel().
  46. / (0:Disable or 1:Enable) */
  47.  
  48. #define _USE_FORWARD 0 // 是否允许f_forward函数
  49. /* This option switches f_forward() function. (0:Disable or 1:Enable)
  50. / To enable it, also _FS_TINY need to be set to 1. */
  51.  
  52. /*---------------------------------------------------------------------------/
  53. / Locale and Namespace Configurations
  54. /---------------------------------------------------------------------------*/
  55. // 编码【932为日文】【936为简体中文】【949为韩文】【950为繁体中文】
  56. #define _CODE_PAGE 1
  57. /* This option specifies the OEM code page to be used on the target system.
  58. / Incorrect setting of the code page can cause a file open failure.
  59. /
  60. / 1 - ASCII (No extended character. Non-LFN cfg. only)
  61. / 437 - U.S.
  62. / 720 - Arabic
  63. / 737 - Greek
  64. / 771 - KBL
  65. / 775 - Baltic
  66. / 850 - Latin 1
  67. / 852 - Latin 2
  68. / 855 - Cyrillic
  69. / 857 - Turkish
  70. / 860 - Portuguese
  71. / 861 - Icelandic
  72. / 862 - Hebrew
  73. / 863 - Canadian French
  74. / 864 - Arabic
  75. / 865 - Nordic
  76. / 866 - Russian
  77. / 869 - Greek 2
  78. / 932 - Japanese (DBCS)
  79. / 936 - Simplified Chinese (DBCS)
  80. / 949 - Korean (DBCS)
  81. / 950 - Traditional Chinese (DBCS)
  82. */
  83.  
  84. #define _USE_LFN 0 // 是否支持长文件名
  85. #define _MAX_LFN 255
  86. /* The _USE_LFN option switches the LFN feature.
  87. /
  88. / 0: Disable LFN feature. _MAX_LFN has no effect.
  89. / 1: Enable LFN with static working buffer on the BSS. Always NOT thread-safe.
  90. / 2: Enable LFN with dynamic working buffer on the STACK.
  91. / 3: Enable LFN with dynamic working buffer on the HEAP.
  92. /
  93. / When enable the LFN feature, Unicode handling functions (option/unicode.c) must
  94. / be added to the project. The LFN working buffer occupies (_MAX_LFN + 1) * 2 bytes.
  95. / When use stack for the working buffer, take care on stack overflow. When use heap
  96. / memory for the working buffer, memory management functions, ff_memalloc() and
  97. / ff_memfree(), must be added to the project. */
  98.  
  99. #define _LFN_UNICODE 0 // 切换字符编码
  100. /* This option switches character encoding on the API. (0:ANSI/OEM or 1:Unicode)
  101. / To use Unicode string for the path name, enable LFN feature and set _LFN_UNICODE
  102. / to 1. This option also affects behavior of string I/O functions. */
  103.  
  104. #define _STRF_ENCODE 3 // 编码相关
  105. /* When _LFN_UNICODE is 1, this option selects the character encoding on the file to
  106. / be read/written via string I/O functions, f_gets(), f_putc(), f_puts and f_printf().
  107. /
  108. / 0: ANSI/OEM
  109. / 1: UTF-16LE
  110. / 2: UTF-16BE
  111. / 3: UTF-8
  112. /
  113. / When _LFN_UNICODE is 0, this option has no effect. */
  114.  
  115. #define _FS_RPATH 0 // 是否允许相对路径
  116. /* This option configures relative path feature.
  117. /
  118. / 0: Disable relative path feature and remove related functions.
  119. / 1: Enable relative path feature. f_chdir() and f_chdrive() are available.
  120. / 2: f_getcwd() function is available in addition to 1.
  121. /
  122. / Note that directory items read via f_readdir() are affected by this option. */
  123.  
  124. /*---------------------------------------------------------------------------/
  125. / Drive/Volume Configurations
  126. /---------------------------------------------------------------------------*/
  127.  
  128. #define _VOLUMES 1 // 磁盘逻辑卷数
  129. /* Number of volumes (logical drives) to be used. */
  130.  
  131. #define _STR_VOLUME_ID 0
  132. #define _VOLUME_STRS "RAM","NAND","CF","SD1","SD2","USB1","USB2","USB3"
  133. /* _STR_VOLUME_ID option switches string volume ID feature.
  134. / When _STR_VOLUME_ID is set to 1, also pre-defined strings can be used as drive
  135. / number in the path name. _VOLUME_STRS defines the drive ID strings for each
  136. / logical drives. Number of items must be equal to _VOLUMES. Valid characters for
  137. / the drive ID strings are: A-Z and 0-9. */
  138.  
  139. #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
  140. /* This option switches multi-partition feature. By default (0), each logical drive
  141. / number is bound to the same physical drive number and only an FAT volume found on
  142. / the physical drive will be mounted. When multi-partition feature is enabled (1),
  143. / each logical drive number is bound to arbitrary physical drive and partition
  144. / listed in the VolToPart[]. Also f_fdisk() funciton will be available. */
  145.  
  146. #define _MIN_SS 512 // 扇区缓冲最小值
  147. #define _MAX_SS 512 // 扇区缓冲最大值
  148. /* These options configure the range of sector size to be supported. (512, 1024,
  149. / 2048 or 4096) Always set both 512 for most systems, all type of memory cards and
  150. / harddisk. But a larger value may be required for on-board flash memory and some
  151. / type of optical media. When _MAX_SS is larger than _MIN_SS, FatFs is configured
  152. / to variable sector size and GET_SECTOR_SIZE command must be implemented to the
  153. / disk_ioctl() function. */
  154.  
  155. #define _USE_TRIM 0
  156. /* This option switches ATA-TRIM feature. (0:Disable or 1:Enable)
  157. / To enable Trim feature, also CTRL_TRIM command should be implemented to the
  158. / disk_ioctl() function. */
  159.  
  160. #define _FS_NOFSINFO 0
  161. /* If you need to know correct free space on the FAT32 volume, set bit 0 of this
  162. / option, and f_getfree() function at first time after volume mount will force
  163. / a full FAT scan. Bit 1 controls the use of last allocated cluster number.
  164. /
  165. / bit0=0: Use free cluster count in the FSINFO if available.
  166. / bit0=1: Do not trust free cluster count in the FSINFO.
  167. / bit1=0: Use last allocated cluster number in the FSINFO if available.
  168. / bit1=1: Do not trust last allocated cluster number in the FSINFO.
  169. */
  170.  
  171. /*---------------------------------------------------------------------------/
  172. / System Configurations
  173. /---------------------------------------------------------------------------*/
  174.  
  175. #define _FS_TINY 0 // 文件系统为标准的还是微型的
  176. /* This option switches tiny buffer configuration. (0:Normal or 1:Tiny)
  177. / At the tiny configuration, size of the file object (FIL) is reduced _MAX_SS
  178. / bytes. Instead of private sector buffer eliminated from the file object,
  179. / common sector buffer in the file system object (FATFS) is used for the file
  180. / data transfer. */
  181.  
  182. #define _FS_NORTC 0
  183. #define _NORTC_MON 1
  184. #define _NORTC_MDAY 1
  185. #define _NORTC_YEAR 2015
  186. /* The _FS_NORTC option switches timestamp feature. If the system does not have
  187. / an RTC function or valid timestamp is not needed, set _FS_NORTC to 1 to disable
  188. / the timestamp feature. All objects modified by FatFs will have a fixed timestamp
  189. / defined by _NORTC_MON, _NORTC_MDAY and _NORTC_YEAR.
  190. / When timestamp feature is enabled (_FS_NORTC == 0), get_fattime() function need
  191. / to be added to the project to read current time form RTC. _NORTC_MON,
  192. / _NORTC_MDAY and _NORTC_YEAR have no effect.
  193. / These options have no effect at read-only configuration (_FS_READONLY == 1). */
  194.  
  195. #define _FS_LOCK 0
  196. /* The _FS_LOCK option switches file lock feature to control duplicated file open
  197. / and illegal operation to open objects. This option must be 0 when _FS_READONLY
  198. / is 1.
  199. /
  200. / 0: Disable file lock feature. To avoid volume corruption, application program
  201. / should avoid illegal open, remove and rename to the open objects.
  202. / >0: Enable file lock feature. The value defines how many files/sub-directories
  203. / can be opened simultaneously under file lock control. Note that the file
  204. / lock feature is independent of re-entrancy. */
  205.  
  206. #define _FS_REENTRANT 0
  207. #define _FS_TIMEOUT 1000
  208. #define _SYNC_t HANDLE
  209. /* The _FS_REENTRANT option switches the re-entrancy (thread safe) of the FatFs
  210. / module itself. Note that regardless of this option, file access to different
  211. / volume is always re-entrant and volume control functions, f_mount(), f_mkfs()
  212. / and f_fdisk() function, are always not re-entrant. Only file/directory access
  213. / to the same volume is under control of this feature.
  214. /
  215. / 0: Disable re-entrancy. _FS_TIMEOUT and _SYNC_t have no effect.
  216. / 1: Enable re-entrancy. Also user provided synchronization handlers,
  217. / ff_req_grant(), ff_rel_grant(), ff_del_syncobj() and ff_cre_syncobj()
  218. / function, must be added to the project. Samples are available in
  219. / option/syscall.c.
  220. /
  221. / The _FS_TIMEOUT defines timeout period in unit of time tick.
  222. / The _SYNC_t defines O/S dependent sync object type. e.g. HANDLE, ID, OS_EVENT*,
  223. / SemaphoreHandle_t and etc.. A header file for O/S definitions needs to be
  224. / included somewhere in the scope of ff.c. */
  225.  
  226. #define _WORD_ACCESS 0 // 数据递进格式
  227. /* The _WORD_ACCESS option is an only platform dependent option. It defines
  228. / which access method is used to the word data on the FAT volume.
  229. /
  230. / 0: Byte-by-byte access. Always compatible with all platforms.
  231. / 1: Word access. Do not choose this unless under both the following conditions.
  232. /
  233. / * Address misaligned memory access is always allowed to ALL instructions.
  234. / * Byte order on the memory is little-endian.
  235. /
  236. / If it is the case, _WORD_ACCESS can also be set to 1 to reduce code size.
  237. / Following table shows allowable settings of some type of processors.
  238. /
  239. / ARM7TDMI 0 *2 ColdFire 0 *1 V850E 0 *2
  240. / Cortex-M3 0 *3 Z80 0/1 V850ES 0/1
  241. / Cortex-M0 0 *2 x86 0/1 TLCS-870 0/1
  242. / AVR 0/1 RX600(LE) 0/1 TLCS-900 0/1
  243. / AVR32 0 *1 RL78 0 *2 R32C 0 *2
  244. / PIC18 0/1 SH-2 0 *1 M16C 0/1
  245. / PIC24 0 *2 H8S 0 *1 MSP430 0 *2
  246. / PIC32 0 *1 H8/300H 0 *1 8051 0/1
  247. /
  248. / *1:Big-endian.
  249. / *2:Unaligned memory access is not supported.
  250. / *3:Some compilers generate LDM/STM for mem_cpy function.
  251. */

  

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

  1. #include "sdio_sdcard.h"
  2.  
  3. #define SD 0
  4. #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)

  1. DSTATUS disk_status (
  2. BYTE pdrv /* Physical drive nmuber to identify the drive */
  3. )
  4. {
  5. DSTATUS stat;
  6. int result;
  7.  
  8. switch (pdrv) {
  9.   case SD :
  10. return stat;
  11.   case FLASH :
  12. return stat;
  13. }
  14. return STA_NOINIT;
  15. }

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

  1. DWORD get_fattime(void) {
  2. /* 返回当前时间戳 */
  3. return ((DWORD)(2015 - 1980) << 25) /* Year 2015 */
  4. | ((DWORD)1 << 21) /* Month 1 */
  5. | ((DWORD)1 << 16) /* Mday 1 */
  6. | ((DWORD)0 << 11) /* Hour 0 */
  7. | ((DWORD)0 << 5) /* Min 0 */
  8. | ((DWORD)0 >> 1); /* Sec 0 */
  9. } 

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

  1. SD_Error SD_Init(void)
  2. {
  3. ...
  4. ...
  5. }

  

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

  1. DSTATUS disk_initialize (
  2. BYTE pdrv /* Physical drive nmuber to identify the drive */
  3. )
  4. {
  5. DSTATUS stat;
  6. int result = 0;
  7.  
  8. switch (pdrv) {
  9. case SD :
  10. result = SD_Init(); // SD卡初始化
  11. break;
  12. case W25Qxx :
  13. break;
  14. }
  15.  
  16. if(result)return STA_NOINIT;
  17. else return 0; //初始化成功
  18. }

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》

  1. #include "stm32f4xx.h"
  2.  
  3. #include "delay.h"
  4.  
  5. // 外设
  6. #include "sdio_sdcard.h"
  7. #include "usart.h"
  8.  
  9. // FatFS
  10. #include "diskio.h"
  11. #include "ff.h"
  12.  
  13. FATFS *fs[_VOLUMES]; // FatFs文件系统对象
  14. FRESULT res_sd; // 文件操作结果
  15.  
  16. int main(void)
  17. {
  18. delay_init(180);
  19.  
  20. /* 串口初始化 */
  21. uart1_init(9600);
  22.  
  23. /* 文件管理系统初始化 */
  24. res_sd = f_mount(fs[0],"0:",1);
  25. USART_SendData(USART1, res_sd); // 打印处理结果
  26.  
  27. while(1);
  28. }

  

执行效果如下,记得要用HEX显示

  1. /* File function return code (FRESULT) */
  2.  
  3. typedef enum {
  4. FR_OK = 0, /* (0) Succeeded */
  5. FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */
  6. FR_INT_ERR, /* (2) Assertion failed */
  7. FR_NOT_READY, /* (3) The physical drive cannot work */
  8. FR_NO_FILE, /* (4) Could not find the file */
  9. FR_NO_PATH, /* (5) Could not find the path */
  10. FR_INVALID_NAME, /* (6) The path name format is invalid */
  11. FR_DENIED, /* (7) Access denied due to prohibited access or directory full */
  12. FR_EXIST, /* (8) Access denied due to prohibited access */
  13. FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
  14. FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
  15. FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
  16. FR_NOT_ENABLED, /* (12) The volume has no work area */
  17. FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */
  18. FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
  19. FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
  20. FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */
  21. FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
  22. FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_LOCK */
  23. FR_INVALID_PARAMETER /* (19) Given parameter is invalid */
  24. } 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》

  1. DRESULT disk_read (
  2. BYTE pdrv, /* Physical drive nmuber (0..) */
  3. BYTE *buff, /* Data buffer to store read data */
  4. DWORD sector, /* Sector address (LBA) */
  5. UINT count /* Number of sectors to read (1..128) */
  6. )
  7. {
  8. u8 res=0;
  9. if (!count)return RES_PARERR;//count不能等于0,否则返回参数错误
  10. switch(pdrv)
  11. {
  12. case SD://SD卡
  13. res=SD_ReadDisk(buff,sector,count);
  14. while(res)//读出错
  15. {
  16. SD_Init(); //重新初始化SD卡
  17. res=SD_ReadDisk(buff,sector,count);
  18. //printf("sd rd error:%d\r\n",res);
  19. }
  20. break;
  21. case W25Qxx://外部flash
  22. break;
  23. default:
  24. res=1;
  25. }
  26. //处理返回值,将SPI_SD_driver.c的返回值转成ff.c的返回值
  27. if(res==0x00)return RES_OK;
  28. else return RES_ERROR;
  29. }

  

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)

  1. #include "sdio_sdcard.h"
  2. #include "string.h"
  3. #include "sys.h"
  4. #include "usart.h"
  5.  
  6. /*用于sdio初始化的结构体*/
  7. SDIO_InitTypeDef SDIO_InitStructure;
  8. SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
  9. SDIO_DataInitTypeDef SDIO_DataInitStructure;
  10.  
  11. SD_Error CmdError(void);
  12. SD_Error CmdResp7Error(void);
  13. SD_Error CmdResp1Error(u8 cmd);
  14. SD_Error CmdResp3Error(void);
  15. SD_Error CmdResp2Error(void);
  16. SD_Error CmdResp6Error(u8 cmd,u16*prca);
  17. SD_Error SDEnWideBus(u8 enx);
  18. SD_Error IsCardProgramming(u8 *pstatus);
  19. SD_Error FindSCR(u16 rca,u32 *pscr);
  20. u8 convert_from_bytes_to_power_of_two(u16 NumberOfBytes);
  21.  
  22. static u8 CardType=SDIO_STD_CAPACITY_SD_CARD_V1_1; //SD卡类型(默认为1.x卡)
  23. static u32 CSD_Tab[4],CID_Tab[4],RCA=0; //SD卡CSD,CID以及相对地址(RCA)数据
  24. 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)
  25. 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
  26. volatile SD_Error TransferError=SD_OK; //数据传输错误标志,DMA读写时使用
  27. volatile u8 TransferEnd=0; //传输结束标志,DMA读写时使用
  28. SD_CardInfo SDCardInfo; //SD卡信息
  29.  
  30. //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,
  31. //需要用到该数组,确保数据缓存区地址是4字节对齐的.
  32. __align(4) u8 SDIO_DATA_BUFFER[512];
  33.  
  34. void SDIO_Register_Deinit()
  35. {
  36. SDIO->POWER=0x00000000;
  37. SDIO->CLKCR=0x00000000;
  38. SDIO->ARG=0x00000000;
  39. SDIO->CMD=0x00000000;
  40. SDIO->DTIMER=0x00000000;
  41. SDIO->DLEN=0x00000000;
  42. SDIO->DCTRL=0x00000000;
  43. SDIO->ICR=0x00C007FF;
  44. SDIO->MASK=0x00000000;
  45. }
  46.  
  47. //初始化SD卡
  48. //返回值:错误代码;(0,无错误)
  49. SD_Error SD_Init(void)
  50. {
  51. GPIO_InitTypeDef GPIO_InitStructure;
  52. NVIC_InitTypeDef NVIC_InitStructure;
  53.  
  54. SD_Error errorstatus=SD_OK;
  55. u8 clkdiv=0;
  56.  
  57. RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC|RCC_AHB1Periph_GPIOD|RCC_AHB1Periph_DMA2, ENABLE);//使能GPIOC,GPIOD DMA2时钟
  58.  
  59. RCC_APB2PeriphClockCmd(RCC_APB2Periph_SDIO, ENABLE);//SDIO时钟使能
  60.  
  61. RCC_APB2PeriphResetCmd(RCC_APB2Periph_SDIO, ENABLE);//SDIO复位
  62.  
  63. 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
  64. GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能
  65. GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100M
  66. GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  67. GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
  68. GPIO_Init(GPIOC, &GPIO_InitStructure);// PC8,9,10,11,12复用功能输出
  69.  
  70. GPIO_InitStructure.GPIO_Pin =GPIO_Pin_2;
  71. GPIO_Init(GPIOD, &GPIO_InitStructure);//PD2复用功能输出
  72.  
  73. //引脚复用映射设置
  74. GPIO_PinAFConfig(GPIOC,GPIO_PinSource8,GPIO_AF_SDIO); //PC8,AF12
  75. GPIO_PinAFConfig(GPIOC,GPIO_PinSource9,GPIO_AF_SDIO);
  76. GPIO_PinAFConfig(GPIOC,GPIO_PinSource10,GPIO_AF_SDIO);
  77. GPIO_PinAFConfig(GPIOC,GPIO_PinSource11,GPIO_AF_SDIO);
  78. GPIO_PinAFConfig(GPIOC,GPIO_PinSource12,GPIO_AF_SDIO);
  79. GPIO_PinAFConfig(GPIOD,GPIO_PinSource2,GPIO_AF_SDIO);
  80.  
  81. RCC_APB2PeriphResetCmd(RCC_APB2Periph_SDIO, DISABLE);//SDIO结束复位
  82.  
  83. //SDIO外设寄存器设置为默认值
  84. SDIO_Register_Deinit();
  85.  
  86. NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
  87. NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;//抢占优先级3
  88. NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; //子优先级3
  89. NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能
  90. NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器
  91.  
  92. 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)
  93.  
  94. 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)
  95.  
  96. if(errorstatus==SD_OK)errorstatus=SD_GetCardInfo(&SDCardInfo); //获取卡信息(解析SD卡,例如容量)
  97.  
  98. if(errorstatus==SD_OK)errorstatus=SD_SelectDeselect((u32)(SDCardInfo.RCA<<16));//选中SD卡
  99.  
  100. 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
  101.  
  102. if((errorstatus==SD_OK)||(SDIO_MULTIMEDIA_CARD==CardType)) {
  103. // 判断SD卡版本,来设置卡的时钟
  104. if(SDCardInfo.CardType==SDIO_STD_CAPACITY_SD_CARD_V1_1||SDCardInfo.CardType==SDIO_STD_CAPACITY_SD_CARD_V2_0)
  105. {
  106. clkdiv=SDIO_TRANSFER_CLK_DIV+2; //V1.1/V2.0卡,设置最高48/4=12Mhz
  107. }
  108. else clkdiv=SDIO_TRANSFER_CLK_DIV; //SDHC等其他卡,设置最高48/2=24Mhz
  109. 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
  110. //errorstatus=SD_SetDeviceMode(SD_DMA_MODE); //设置为DMA模式
  111. errorstatus=SD_SetDeviceMode(SD_POLLING_MODE);//设置为查询模式
  112. }
  113. return errorstatus;
  114. }
  115. //SDIO时钟初始化设置
  116. //clkdiv:时钟分频系数
  117. //CK时钟=SDIOCLK/[clkdiv+2];(SDIOCLK时钟固定为48Mhz)
  118. void SDIO_Clock_Set(u8 clkdiv)
  119. {
  120. u32 tmpreg=SDIO->CLKCR;
  121. tmpreg&=0XFFFFFF00;
  122. tmpreg|=clkdiv;
  123. SDIO->CLKCR=tmpreg;
  124. }
  125.  
  126. //卡上电
  127. //查询所有SDIO接口上的卡设备,并查询其电压和配置时钟
  128. //返回值:错误代码;(0,无错误)
  129. SD_Error SD_PowerON(void)
  130. {
  131. u8 i=0;
  132. SD_Error errorstatus=SD_OK;
  133. u32 response=0,count=0,validvoltage=0;
  134. u32 SDType=SD_STD_CAPACITY;
  135.  
  136. /*初始化时的时钟不能大于400KHz*/
  137. SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV; /* HCLK = 72MHz, SDIOCLK = 72MHz, SDIO_CK = HCLK/(178 + 2) = 400 KHz */
  138. SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
  139. 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
  140. SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable; // 空闲时不关闭时钟电源
  141. SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b; //1位数据线
  142. SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;//硬件流
  143. SDIO_Init(&SDIO_InitStructure);
  144.  
  145. SDIO_SetPowerState(SDIO_PowerState_ON); //上电状态,开启卡时钟
  146. SDIO->CLKCR|=1<<8; //SDIOCK使能
  147.  
  148. /* --------------------------------- 执行CMD0 ------------------------------------ */
  149. for(i=0;i<74;i++)
  150. {
  151. SDIO_CmdInitStructure.SDIO_Argument = 0x0;//发送CMD0进入IDLE STAGE模式命令.
  152. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_GO_IDLE_STATE; //cmd0
  153. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No; //无响应
  154. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  155. 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。
  156. SDIO_SendCommand(&SDIO_CmdInitStructure); //写命令进命令寄存器
  157.  
  158. errorstatus=CmdError();
  159.  
  160. if(errorstatus==SD_OK)break;
  161. }
  162. if(errorstatus)return errorstatus;//返回错误状态
  163.  
  164. /* --------------------------------- 执行CMD8 ------------------------------------ */
  165. SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN; //发送CMD8,短响应,检查SD卡接口特性
  166. SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND; //cmd8
  167. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r7
  168. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No; //关闭等待中断
  169. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  170. SDIO_SendCommand(&SDIO_CmdInitStructure);
  171.  
  172. errorstatus=CmdResp7Error(); //等待R7响应
  173.  
  174. /* --------------------------------- 执行CMD55 ------------------------------------ */
  175. if(errorstatus==SD_OK) //R7响应正常
  176. {
  177. CardType=SDIO_STD_CAPACITY_SD_CARD_V2_0; //SD 2.0卡
  178. SDType=SD_HIGH_CAPACITY; //高容量卡
  179. }
  180.  
  181. SDIO_CmdInitStructure.SDIO_Argument = 0x00;//发送CMD55,短响应
  182. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
  183. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  184. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  185. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  186. SDIO_SendCommand(&SDIO_CmdInitStructure); //发送CMD55,短响应
  187.  
  188. errorstatus=CmdResp1Error(SD_CMD_APP_CMD); //等待R1响应
  189.  
  190. if(errorstatus==SD_OK)//SD2.0/SD 1.1,否则为MMC卡
  191. {
  192. //SD卡,发送ACMD41 SD_APP_OP_COND,参数为:0x80100000
  193. while((!validvoltage)&&(count<SD_MAX_VOLT_TRIAL))
  194. {
  195. // 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
  196. // 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
  197. SDIO_CmdInitStructure.SDIO_Argument = 0x00;//发送CMD55,短响应
  198. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD; //CMD55
  199. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  200. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  201. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  202. SDIO_SendCommand(&SDIO_CmdInitStructure); //发送CMD55,短响应
  203.  
  204. errorstatus=CmdResp1Error(SD_CMD_APP_CMD); //等待R1响应
  205.  
  206. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  207.  
  208. //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
  209. SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType; //发送ACMD41,短响应
  210. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_OP_COND;
  211. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r3
  212. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  213. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  214. SDIO_SendCommand(&SDIO_CmdInitStructure);
  215.  
  216. errorstatus=CmdResp3Error(); //等待R3响应
  217.  
  218. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  219. response=SDIO->RESP1;; //得到响应
  220. validvoltage=(((response>>31)==1)?1:0); //判断SD卡上电是否完成
  221. count++;
  222. }
  223. if(count>=SD_MAX_VOLT_TRIAL)
  224. {
  225. errorstatus=SD_INVALID_VOLTRANGE;
  226. return errorstatus;
  227. }
  228. if(response&=SD_HIGH_CAPACITY)
  229. {
  230. CardType=SDIO_HIGH_CAPACITY_SD_CARD;
  231. }
  232. }
  233. else//MMC卡
  234. {
  235. //MMC卡,发送CMD1 SDIO_SEND_OP_COND,参数为:0x80FF8000
  236. while((!validvoltage)&&(count<SD_MAX_VOLT_TRIAL))
  237. {
  238. SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_MMC;//发送CMD1,短响应
  239. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_OP_COND;
  240. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r3
  241. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  242. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  243. SDIO_SendCommand(&SDIO_CmdInitStructure);
  244.  
  245. errorstatus=CmdResp3Error(); //等待R3响应
  246.  
  247. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  248. response=SDIO->RESP1;; //得到响应
  249. validvoltage=(((response>>31)==1)?1:0);
  250. count++;
  251. }
  252. if(count>=SD_MAX_VOLT_TRIAL)
  253. {
  254. errorstatus=SD_INVALID_VOLTRANGE;
  255. return errorstatus;
  256. }
  257. CardType=SDIO_MULTIMEDIA_CARD;
  258. }
  259.  
  260. return(errorstatus);
  261. }
  262. //SD卡 Power OFF
  263. //返回值:错误代码;(0,无错误)
  264. SD_Error SD_PowerOFF(void)
  265. {
  266.  
  267. SDIO_SetPowerState(SDIO_PowerState_OFF);//SDIO电源关闭,时钟停止
  268.  
  269. return SD_OK;
  270. }
  271. //初始化所有的卡,并让卡进入就绪状态
  272. //返回值:错误代码
  273. SD_Error SD_InitializeCards(void)
  274. {
  275. SD_Error errorstatus=SD_OK;
  276. u16 rca = 0x01;
  277.  
  278. if (SDIO_GetPowerState() == SDIO_PowerState_OFF) //检查电源状态,确保为上电状态
  279. {
  280. errorstatus = SD_REQUEST_NOT_APPLICABLE;
  281. return(errorstatus);
  282. }
  283.  
  284. if(SDIO_SECURE_DIGITAL_IO_CARD!=CardType) //非SECURE_DIGITAL_IO_CARD
  285. {
  286. SDIO_CmdInitStructure.SDIO_Argument = 0x0;//发送CMD2,取得CID,长响应
  287. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ALL_SEND_CID;
  288. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
  289. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  290. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  291. SDIO_SendCommand(&SDIO_CmdInitStructure);//发送CMD2,取得CID,长响应
  292.  
  293. errorstatus=CmdResp2Error(); //等待R2响应
  294.  
  295. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  296.  
  297. CID_Tab[0]=SDIO->RESP1;
  298. CID_Tab[1]=SDIO->RESP2;
  299. CID_Tab[2]=SDIO->RESP3;
  300. CID_Tab[3]=SDIO->RESP4;
  301. }
  302. 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
  303. {
  304. SDIO_CmdInitStructure.SDIO_Argument = 0x00;//发送CMD3,短响应
  305. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR; //cmd3
  306. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r6
  307. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  308. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  309. SDIO_SendCommand(&SDIO_CmdInitStructure); //发送CMD3,短响应
  310.  
  311. errorstatus=CmdResp6Error(SD_CMD_SET_REL_ADDR,&rca);//等待R6响应
  312.  
  313. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  314. }
  315. if (SDIO_MULTIMEDIA_CARD==CardType)
  316. {
  317.  
  318. SDIO_CmdInitStructure.SDIO_Argument = (u32)(rca<<16);//发送CMD3,短响应
  319. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR; //cmd3
  320. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r6
  321. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  322. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  323. SDIO_SendCommand(&SDIO_CmdInitStructure); //发送CMD3,短响应
  324.  
  325. errorstatus=CmdResp2Error(); //等待R2响应
  326.  
  327. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  328. }
  329. if (SDIO_SECURE_DIGITAL_IO_CARD!=CardType) //非SECURE_DIGITAL_IO_CARD
  330. {
  331. RCA = rca;
  332.  
  333. SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);//发送CMD9+卡RCA,取得CSD,长响应
  334. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_CSD;
  335. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
  336. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  337. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  338. SDIO_SendCommand(&SDIO_CmdInitStructure);
  339.  
  340. errorstatus=CmdResp2Error(); //等待R2响应
  341. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  342.  
  343. CSD_Tab[0]=SDIO->RESP1;
  344. CSD_Tab[1]=SDIO->RESP2;
  345. CSD_Tab[2]=SDIO->RESP3;
  346. CSD_Tab[3]=SDIO->RESP4;
  347. }
  348. return SD_OK;//卡初始化成功
  349. }
  350. //得到卡信息
  351. //cardinfo:卡信息存储区
  352. //返回值:错误状态
  353. SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)
  354. {
  355. SD_Error errorstatus=SD_OK;
  356. u8 tmp=0;
  357. cardinfo->CardType=(u8)CardType; //卡类型
  358. cardinfo->RCA=(u16)RCA; //卡RCA值
  359. tmp=(u8)((CSD_Tab[0]&0xFF000000)>>24);
  360. cardinfo->SD_csd.CSDStruct=(tmp&0xC0)>>6; //CSD结构
  361. 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
  362. cardinfo->SD_csd.Reserved1=tmp&0x03; //2个保留位
  363. tmp=(u8)((CSD_Tab[0]&0x00FF0000)>>16); //第1个字节
  364. cardinfo->SD_csd.TAAC=tmp; //数据读时间1
  365. tmp=(u8)((CSD_Tab[0]&0x0000FF00)>>8); //第2个字节
  366. cardinfo->SD_csd.NSAC=tmp; //数据读时间2
  367. tmp=(u8)(CSD_Tab[0]&0x000000FF); //第3个字节
  368. cardinfo->SD_csd.MaxBusClkFrec=tmp; //传输速度
  369. tmp=(u8)((CSD_Tab[1]&0xFF000000)>>24); //第4个字节
  370. cardinfo->SD_csd.CardComdClasses=tmp<<4; //卡指令类高四位
  371. tmp=(u8)((CSD_Tab[1]&0x00FF0000)>>16); //第5个字节
  372. cardinfo->SD_csd.CardComdClasses|=(tmp&0xF0)>>4;//卡指令类低四位
  373. cardinfo->SD_csd.RdBlockLen=tmp&0x0F; //最大读取数据长度
  374. tmp=(u8)((CSD_Tab[1]&0x0000FF00)>>8); //第6个字节
  375. cardinfo->SD_csd.PartBlockRead=(tmp&0x80)>>7; //允许分块读
  376. cardinfo->SD_csd.WrBlockMisalign=(tmp&0x40)>>6; //写块错位
  377. cardinfo->SD_csd.RdBlockMisalign=(tmp&0x20)>>5; //读块错位
  378. cardinfo->SD_csd.DSRImpl=(tmp&0x10)>>4;
  379. cardinfo->SD_csd.Reserved2=0; //保留
  380. 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
  381. {
  382. cardinfo->SD_csd.DeviceSize=(tmp&0x03)<<10; //C_SIZE(12位)
  383. tmp=(u8)(CSD_Tab[1]&0x000000FF); //第7个字节
  384. cardinfo->SD_csd.DeviceSize|=(tmp)<<2;
  385. tmp=(u8)((CSD_Tab[2]&0xFF000000)>>24); //第8个字节
  386. cardinfo->SD_csd.DeviceSize|=(tmp&0xC0)>>6;
  387. cardinfo->SD_csd.MaxRdCurrentVDDMin=(tmp&0x38)>>3;
  388. cardinfo->SD_csd.MaxRdCurrentVDDMax=(tmp&0x07);
  389. tmp=(u8)((CSD_Tab[2]&0x00FF0000)>>16); //第9个字节
  390. cardinfo->SD_csd.MaxWrCurrentVDDMin=(tmp&0xE0)>>5;
  391. cardinfo->SD_csd.MaxWrCurrentVDDMax=(tmp&0x1C)>>2;
  392. cardinfo->SD_csd.DeviceSizeMul=(tmp&0x03)<<1;//C_SIZE_MULT
  393. tmp=(u8)((CSD_Tab[2]&0x0000FF00)>>8); //第10个字节
  394. cardinfo->SD_csd.DeviceSizeMul|=(tmp&0x80)>>7;
  395. cardinfo->CardCapacity=(cardinfo->SD_csd.DeviceSize+1);//计算卡容量
  396. cardinfo->CardCapacity*=(1<<(cardinfo->SD_csd.DeviceSizeMul+2));
  397. cardinfo->CardBlockSize=1<<(cardinfo->SD_csd.RdBlockLen);//块大小
  398. cardinfo->CardCapacity*=cardinfo->CardBlockSize;
  399. }else if(CardType==SDIO_HIGH_CAPACITY_SD_CARD) //高容量卡
  400. {
  401. tmp=(u8)(CSD_Tab[1]&0x000000FF); //第7个字节
  402. cardinfo->SD_csd.DeviceSize=(tmp&0x3F)<<16;//C_SIZE
  403. tmp=(u8)((CSD_Tab[2]&0xFF000000)>>24); //第8个字节
  404. cardinfo->SD_csd.DeviceSize|=(tmp<<8);
  405. tmp=(u8)((CSD_Tab[2]&0x00FF0000)>>16); //第9个字节
  406. cardinfo->SD_csd.DeviceSize|=(tmp);
  407. tmp=(u8)((CSD_Tab[2]&0x0000FF00)>>8); //第10个字节
  408. cardinfo->CardCapacity=(long long)(cardinfo->SD_csd.DeviceSize+1)*512*1024;//计算卡容量
  409. cardinfo->CardBlockSize=512; //块大小固定为512字节
  410. }
  411. cardinfo->SD_csd.EraseGrSize=(tmp&0x40)>>6;
  412. cardinfo->SD_csd.EraseGrMul=(tmp&0x3F)<<1;
  413. tmp=(u8)(CSD_Tab[2]&0x000000FF); //第11个字节
  414. cardinfo->SD_csd.EraseGrMul|=(tmp&0x80)>>7;
  415. cardinfo->SD_csd.WrProtectGrSize=(tmp&0x7F);
  416. tmp=(u8)((CSD_Tab[3]&0xFF000000)>>24); //第12个字节
  417. cardinfo->SD_csd.WrProtectGrEnable=(tmp&0x80)>>7;
  418. cardinfo->SD_csd.ManDeflECC=(tmp&0x60)>>5;
  419. cardinfo->SD_csd.WrSpeedFact=(tmp&0x1C)>>2;
  420. cardinfo->SD_csd.MaxWrBlockLen=(tmp&0x03)<<2;
  421. tmp=(u8)((CSD_Tab[3]&0x00FF0000)>>16); //第13个字节
  422. cardinfo->SD_csd.MaxWrBlockLen|=(tmp&0xC0)>>6;
  423. cardinfo->SD_csd.WriteBlockPaPartial=(tmp&0x20)>>5;
  424. cardinfo->SD_csd.Reserved3=0;
  425. cardinfo->SD_csd.ContentProtectAppli=(tmp&0x01);
  426. tmp=(u8)((CSD_Tab[3]&0x0000FF00)>>8); //第14个字节
  427. cardinfo->SD_csd.FileFormatGrouop=(tmp&0x80)>>7;
  428. cardinfo->SD_csd.CopyFlag=(tmp&0x40)>>6;
  429. cardinfo->SD_csd.PermWrProtect=(tmp&0x20)>>5;
  430. cardinfo->SD_csd.TempWrProtect=(tmp&0x10)>>4;
  431. cardinfo->SD_csd.FileFormat=(tmp&0x0C)>>2;
  432. cardinfo->SD_csd.ECC=(tmp&0x03);
  433. tmp=(u8)(CSD_Tab[3]&0x000000FF); //第15个字节
  434. cardinfo->SD_csd.CSD_CRC=(tmp&0xFE)>>1;
  435. cardinfo->SD_csd.Reserved4=1;
  436. tmp=(u8)((CID_Tab[0]&0xFF000000)>>24); //第0个字节
  437. cardinfo->SD_cid.ManufacturerID=tmp;
  438. tmp=(u8)((CID_Tab[0]&0x00FF0000)>>16); //第1个字节
  439. cardinfo->SD_cid.OEM_AppliID=tmp<<8;
  440. tmp=(u8)((CID_Tab[0]&0x000000FF00)>>8); //第2个字节
  441. cardinfo->SD_cid.OEM_AppliID|=tmp;
  442. tmp=(u8)(CID_Tab[0]&0x000000FF); //第3个字节
  443. cardinfo->SD_cid.ProdName1=tmp<<24;
  444. tmp=(u8)((CID_Tab[1]&0xFF000000)>>24); //第4个字节
  445. cardinfo->SD_cid.ProdName1|=tmp<<16;
  446. tmp=(u8)((CID_Tab[1]&0x00FF0000)>>16); //第5个字节
  447. cardinfo->SD_cid.ProdName1|=tmp<<8;
  448. tmp=(u8)((CID_Tab[1]&0x0000FF00)>>8); //第6个字节
  449. cardinfo->SD_cid.ProdName1|=tmp;
  450. tmp=(u8)(CID_Tab[1]&0x000000FF); //第7个字节
  451. cardinfo->SD_cid.ProdName2=tmp;
  452. tmp=(u8)((CID_Tab[2]&0xFF000000)>>24); //第8个字节
  453. cardinfo->SD_cid.ProdRev=tmp;
  454. tmp=(u8)((CID_Tab[2]&0x00FF0000)>>16); //第9个字节
  455. cardinfo->SD_cid.ProdSN=tmp<<24;
  456. tmp=(u8)((CID_Tab[2]&0x0000FF00)>>8); //第10个字节
  457. cardinfo->SD_cid.ProdSN|=tmp<<16;
  458. tmp=(u8)(CID_Tab[2]&0x000000FF); //第11个字节
  459. cardinfo->SD_cid.ProdSN|=tmp<<8;
  460. tmp=(u8)((CID_Tab[3]&0xFF000000)>>24); //第12个字节
  461. cardinfo->SD_cid.ProdSN|=tmp;
  462. tmp=(u8)((CID_Tab[3]&0x00FF0000)>>16); //第13个字节
  463. cardinfo->SD_cid.Reserved1|=(tmp&0xF0)>>4;
  464. cardinfo->SD_cid.ManufactDate=(tmp&0x0F)<<8;
  465. tmp=(u8)((CID_Tab[3]&0x0000FF00)>>8); //第14个字节
  466. cardinfo->SD_cid.ManufactDate|=tmp;
  467. tmp=(u8)(CID_Tab[3]&0x000000FF); //第15个字节
  468. cardinfo->SD_cid.CID_CRC=(tmp&0xFE)>>1;
  469. cardinfo->SD_cid.Reserved2=1;
  470. return errorstatus;
  471. }
  472. //设置SDIO总线宽度(MMC卡不支持4bit模式)
  473. //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
  474. //返回值:SD卡错误状态
  475.  
  476. //设置SDIO总线宽度(MMC卡不支持4bit模式)
  477. // @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
  478. // @arg SDIO_BusWide_4b: 4-bit data transfer
  479. // @arg SDIO_BusWide_1b: 1-bit data transfer (默认)
  480. //返回值:SD卡错误状态
  481.  
  482. SD_Error SD_EnableWideBusOperation(u32 WideMode)
  483. {
  484. SD_Error errorstatus=SD_OK;
  485. if (SDIO_MULTIMEDIA_CARD == CardType)
  486. {
  487. errorstatus = SD_UNSUPPORTED_FEATURE;
  488. return(errorstatus);
  489. }
  490.  
  491. else if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType))
  492. {
  493. if (SDIO_BusWide_8b == WideMode) //2.0 sd不支持8bits
  494. {
  495. errorstatus = SD_UNSUPPORTED_FEATURE;
  496. return(errorstatus);
  497. }
  498. else
  499. {
  500. errorstatus=SDEnWideBus(WideMode);
  501. if(SD_OK==errorstatus)
  502. {
  503. SDIO->CLKCR&=~(3<<11); //清除之前的位宽设置
  504. SDIO->CLKCR|=WideMode;//1位/4位总线宽度
  505. SDIO->CLKCR|=0<<14; //不开启硬件流控制
  506. }
  507. }
  508. }
  509. return errorstatus;
  510. }
  511. //设置SD卡工作模式
  512. //Mode:
  513. //返回值:错误状态
  514. SD_Error SD_SetDeviceMode(u32 Mode)
  515. {
  516. SD_Error errorstatus = SD_OK;
  517. if((Mode==SD_DMA_MODE)||(Mode==SD_POLLING_MODE))DeviceMode=Mode;
  518. else errorstatus=SD_INVALID_PARAMETER;
  519. return errorstatus;
  520. }
  521. //选卡
  522. //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.
  523. //addr:卡的RCA地址
  524. SD_Error SD_SelectDeselect(u32 addr)
  525. {
  526.  
  527. SDIO_CmdInitStructure.SDIO_Argument = addr;//发送CMD7,选择卡,短响应
  528. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEL_DESEL_CARD;
  529. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  530. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  531. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  532. SDIO_SendCommand(&SDIO_CmdInitStructure);//发送CMD7,选择卡,短响应
  533.  
  534. return CmdResp1Error(SD_CMD_SEL_DESEL_CARD);
  535. }
  536. //SD卡读取一个块
  537. //buf:读数据缓存区(必须4字节对齐!!)
  538. //addr:读取地址
  539. //blksize:块大小
  540. SD_Error SD_ReadBlock(u8 *buf,long long addr,u16 blksize)
  541. {
  542. SD_Error errorstatus=SD_OK;
  543. u8 power;
  544. u32 count=0,*tempbuff=(u32*)buf;//转换为u32指针
  545. u32 timeout=SDIO_DATATIMEOUT;
  546. if(NULL==buf)
  547. return SD_INVALID_PARAMETER;
  548. SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA)
  549.  
  550. if(CardType==SDIO_HIGH_CAPACITY_SD_CARD)//大容量卡
  551. {
  552. blksize=512;
  553. addr>>=9;
  554. }
  555. SDIO_DataInitStructure.SDIO_DataBlockSize= SDIO_DataBlockSize_1b ;//清除DPSM状态机配置
  556. SDIO_DataInitStructure.SDIO_DataLength= 0 ;
  557. SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ;
  558. SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable;
  559. SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard;
  560. SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block;
  561. SDIO_DataConfig(&SDIO_DataInitStructure);
  562.  
  563. if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了
  564. if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0))
  565. {
  566. power=convert_from_bytes_to_power_of_two(blksize);
  567.  
  568. SDIO_CmdInitStructure.SDIO_Argument = blksize;
  569. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
  570. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  571. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  572. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  573. SDIO_SendCommand(&SDIO_CmdInitStructure);//发送CMD16+设置数据长度为blksize,短响应
  574.  
  575. errorstatus=CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应
  576.  
  577. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  578.  
  579. }else return SD_INVALID_PARAMETER;
  580.  
  581. SDIO_DataInitStructure.SDIO_DataBlockSize= power<<4 ;//清除DPSM状态机配置
  582. SDIO_DataInitStructure.SDIO_DataLength= blksize ;
  583. SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ;
  584. SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable;
  585. SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToSDIO;
  586. SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block;
  587. SDIO_DataConfig(&SDIO_DataInitStructure);
  588.  
  589. SDIO_CmdInitStructure.SDIO_Argument = addr;
  590. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_SINGLE_BLOCK;
  591. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  592. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  593. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  594. SDIO_SendCommand(&SDIO_CmdInitStructure);//发送CMD17+从addr地址出读取数据,短响应
  595.  
  596. errorstatus=CmdResp1Error(SD_CMD_READ_SINGLE_BLOCK);//等待R1响应
  597. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  598. if(DeviceMode==SD_POLLING_MODE) //查询模式,轮询数据
  599. {
  600. INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!)
  601. 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
  602. {
  603. if(SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET) //接收区半满,表示至少存了8个字
  604. {
  605. for(count=0;count<8;count++) //循环读取数据
  606. {
  607. *(tempbuff+count)=SDIO->FIFO;
  608. }
  609. tempbuff+=8;
  610. timeout=0X7FFFFF; //读数据溢出时间
  611. }else //处理超时
  612. {
  613. if(timeout==0)return SD_DATA_TIMEOUT;
  614. timeout--;
  615. }
  616. }
  617. if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET) //数据超时错误
  618. {
  619. SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清错误标志
  620. return SD_DATA_TIMEOUT;
  621. }else if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET) //数据块CRC错误
  622. {
  623. SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志
  624. return SD_DATA_CRC_FAIL;
  625. }else if(SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET) //接收fifo上溢错误
  626. {
  627. SDIO_ClearFlag(SDIO_FLAG_RXOVERR); //清错误标志
  628. return SD_RX_OVERRUN;
  629. }else if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET) //接收起始位错误
  630. {
  631. SDIO_ClearFlag(SDIO_FLAG_STBITERR);//清错误标志
  632. return SD_START_BIT_ERR;
  633. }
  634. while(SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) //FIFO里面,还存在可用数据
  635. {
  636. *tempbuff=SDIO->FIFO; //循环读取数据
  637. tempbuff++;
  638. }
  639. INTX_ENABLE();//开启总中断
  640. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  641.  
  642. }else if(DeviceMode==SD_DMA_MODE)
  643. {
  644. TransferError=SD_OK;
  645. StopCondition=0; //单块读,不需要发送停止传输指令
  646. TransferEnd=0; //传输结束标置位,在中断服务置1
  647. SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<5)|(1<<9); //配置需要的中断
  648. SDIO->DCTRL|=1<<3; //SDIO DMA使能
  649. SD_DMA_Config((u32*)buf,blksize,DMA_DIR_PeripheralToMemory);
  650. while(((DMA2->LISR&(1<<27))==RESET)&&(TransferEnd==0)&&(TransferError==SD_OK)&&timeout)timeout--;//等待传输完成
  651. if(timeout==0)return SD_DATA_TIMEOUT;//超时
  652. if(TransferError!=SD_OK)errorstatus=TransferError;
  653. }
  654. return errorstatus;
  655. }
  656. //SD卡读取多个块
  657. //buf:读数据缓存区
  658. //addr:读取地址
  659. //blksize:块大小
  660. //nblks:要读取的块数
  661. //返回值:错误状态
  662. __align(4) u32 *tempbuff;
  663. SD_Error SD_ReadMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks)
  664. {
  665. SD_Error errorstatus=SD_OK;
  666. u8 power;
  667. u32 count=0;
  668. u32 timeout=SDIO_DATATIMEOUT;
  669. tempbuff=(u32*)buf;//转换为u32指针
  670.  
  671. SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA)
  672. if(CardType==SDIO_HIGH_CAPACITY_SD_CARD)//大容量卡
  673. {
  674. blksize=512;
  675. addr>>=9;
  676. }
  677.  
  678. SDIO_DataInitStructure.SDIO_DataBlockSize= 0; ;//清除DPSM状态机配置
  679. SDIO_DataInitStructure.SDIO_DataLength= 0 ;
  680. SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ;
  681. SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable;
  682. SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard;
  683. SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block;
  684. SDIO_DataConfig(&SDIO_DataInitStructure);
  685.  
  686. if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了
  687. if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0))
  688. {
  689. power=convert_from_bytes_to_power_of_two(blksize);
  690.  
  691. SDIO_CmdInitStructure.SDIO_Argument = blksize;//发送CMD16+设置数据长度为blksize,短响应
  692. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
  693. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  694. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  695. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  696. SDIO_SendCommand(&SDIO_CmdInitStructure);
  697.  
  698. errorstatus=CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应
  699.  
  700. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  701.  
  702. }else return SD_INVALID_PARAMETER;
  703.  
  704. if(nblks>1) //多块读
  705. {
  706. if(nblks*blksize>SD_MAX_DATA_LENGTH)return SD_INVALID_PARAMETER;//判断是否超过最大接收长度
  707.  
  708. SDIO_DataInitStructure.SDIO_DataBlockSize= power<<4; ;//nblks*blksize,512块大小,卡到控制器
  709. SDIO_DataInitStructure.SDIO_DataLength= nblks*blksize ;
  710. SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ;
  711. SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable;
  712. SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToSDIO;
  713. SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block;
  714. SDIO_DataConfig(&SDIO_DataInitStructure);
  715.  
  716. SDIO_CmdInitStructure.SDIO_Argument = addr;//发送CMD18+从addr地址出读取数据,短响应
  717. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_MULT_BLOCK;
  718. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  719. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  720. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  721. SDIO_SendCommand(&SDIO_CmdInitStructure);
  722.  
  723. errorstatus=CmdResp1Error(SD_CMD_READ_MULT_BLOCK);//等待R1响应
  724.  
  725. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  726.  
  727. if(DeviceMode==SD_POLLING_MODE)
  728. {
  729. INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!)
  730. 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
  731. {
  732. if(SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET) //接收区半满,表示至少存了8个字
  733. {
  734. for(count=0;count<8;count++) //循环读取数据
  735. {
  736. *(tempbuff+count)=SDIO->FIFO;
  737. }
  738. tempbuff+=8;
  739. timeout=0X7FFFFF; //读数据溢出时间
  740. }else //处理超时
  741. {
  742. if(timeout==0)return SD_DATA_TIMEOUT;
  743. timeout--;
  744. }
  745. }
  746. if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET) //数据超时错误
  747. {
  748. SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清错误标志
  749. return SD_DATA_TIMEOUT;
  750. }else if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET) //数据块CRC错误
  751. {
  752. SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志
  753. return SD_DATA_CRC_FAIL;
  754. }else if(SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET) //接收fifo上溢错误
  755. {
  756. SDIO_ClearFlag(SDIO_FLAG_RXOVERR); //清错误标志
  757. return SD_RX_OVERRUN;
  758. }else if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET) //接收起始位错误
  759. {
  760. SDIO_ClearFlag(SDIO_FLAG_STBITERR);//清错误标志
  761. return SD_START_BIT_ERR;
  762. }
  763.  
  764. while(SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) //FIFO里面,还存在可用数据
  765. {
  766. *tempbuff=SDIO->FIFO; //循环读取数据
  767. tempbuff++;
  768. }
  769. if(SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET) //接收结束
  770. {
  771. if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType))
  772. {
  773. SDIO_CmdInitStructure.SDIO_Argument = 0;//发送CMD12+结束传输
  774. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION;
  775. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  776. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  777. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  778. SDIO_SendCommand(&SDIO_CmdInitStructure);
  779.  
  780. errorstatus=CmdResp1Error(SD_CMD_STOP_TRANSMISSION);//等待R1响应
  781.  
  782. if(errorstatus!=SD_OK)return errorstatus;
  783. }
  784. }
  785. INTX_ENABLE();//开启总中断
  786. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  787. }else if(DeviceMode==SD_DMA_MODE)
  788. {
  789. TransferError=SD_OK;
  790. StopCondition=1; //多块读,需要发送停止传输指令
  791. TransferEnd=0; //传输结束标置位,在中断服务置1
  792. SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<5)|(1<<9); //配置需要的中断
  793. SDIO->DCTRL|=1<<3; //SDIO DMA使能
  794. SD_DMA_Config((u32*)buf,nblks*blksize,DMA_DIR_PeripheralToMemory);
  795. while(((DMA2->LISR&(1<<27))==RESET)&&timeout)timeout--;//等待传输完成
  796. if(timeout==0)return SD_DATA_TIMEOUT;//超时
  797. while((TransferEnd==0)&&(TransferError==SD_OK));
  798. if(TransferError!=SD_OK)errorstatus=TransferError;
  799. }
  800. }
  801. return errorstatus;
  802. }
  803. //SD卡写1个块
  804. //buf:数据缓存区
  805. //addr:写地址
  806. //blksize:块大小
  807. //返回值:错误状态
  808. SD_Error SD_WriteBlock(u8 *buf,long long addr, u16 blksize)
  809. {
  810. SD_Error errorstatus = SD_OK;
  811.  
  812. u8 power=0,cardstate=0;
  813.  
  814. u32 timeout=0,bytestransferred=0;
  815.  
  816. u32 cardstatus=0,count=0,restwords=0;
  817.  
  818. u32 tlen=blksize; //总长度(字节)
  819.  
  820. u32*tempbuff=(u32*)buf;
  821.  
  822. if(buf==NULL)return SD_INVALID_PARAMETER;//参数错误
  823.  
  824. SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA)
  825.  
  826. SDIO_DataInitStructure.SDIO_DataBlockSize= 0; ;//清除DPSM状态机配置
  827. SDIO_DataInitStructure.SDIO_DataLength= 0 ;
  828. SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ;
  829. SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable;
  830. SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard;
  831. SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block;
  832. SDIO_DataConfig(&SDIO_DataInitStructure);
  833.  
  834. if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了
  835. if(CardType==SDIO_HIGH_CAPACITY_SD_CARD) //大容量卡
  836. {
  837. blksize=512;
  838. addr>>=9;
  839. }
  840. if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0))
  841. {
  842. power=convert_from_bytes_to_power_of_two(blksize);
  843.  
  844. SDIO_CmdInitStructure.SDIO_Argument = blksize;//发送CMD16+设置数据长度为blksize,短响应
  845. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
  846. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  847. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  848. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  849. SDIO_SendCommand(&SDIO_CmdInitStructure);
  850.  
  851. errorstatus=CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应
  852.  
  853. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  854.  
  855. }else return SD_INVALID_PARAMETER;
  856.  
  857. SDIO_CmdInitStructure.SDIO_Argument = (u32)RCA<<16;//发送CMD13,查询卡的状态,短响应
  858. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
  859. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  860. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  861. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  862. SDIO_SendCommand(&SDIO_CmdInitStructure);
  863.  
  864. errorstatus=CmdResp1Error(SD_CMD_SEND_STATUS); //等待R1响应
  865.  
  866. if(errorstatus!=SD_OK)return errorstatus;
  867. cardstatus=SDIO->RESP1;
  868. timeout=SD_DATATIMEOUT;
  869. while(((cardstatus&0x00000100)==0)&&(timeout>0)) //检查READY_FOR_DATA位是否置位
  870. {
  871. timeout--;
  872.  
  873. SDIO_CmdInitStructure.SDIO_Argument = (u32)RCA<<16;//发送CMD13,查询卡的状态,短响应
  874. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
  875. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  876. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  877. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  878. SDIO_SendCommand(&SDIO_CmdInitStructure);
  879.  
  880. errorstatus=CmdResp1Error(SD_CMD_SEND_STATUS); //等待R1响应
  881.  
  882. if(errorstatus!=SD_OK)return errorstatus;
  883.  
  884. cardstatus=SDIO->RESP1;
  885. }
  886. if(timeout==0)return SD_ERROR;
  887.  
  888. SDIO_CmdInitStructure.SDIO_Argument = addr;//发送CMD24,写单块指令,短响应
  889. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_SINGLE_BLOCK;
  890. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  891. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  892. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  893. SDIO_SendCommand(&SDIO_CmdInitStructure);
  894.  
  895. errorstatus=CmdResp1Error(SD_CMD_WRITE_SINGLE_BLOCK);//等待R1响应
  896.  
  897. if(errorstatus!=SD_OK)return errorstatus;
  898.  
  899. StopCondition=0; //单块写,不需要发送停止传输指令
  900.  
  901. SDIO_DataInitStructure.SDIO_DataBlockSize= power<<4; ; //blksize, 控制器到卡
  902. SDIO_DataInitStructure.SDIO_DataLength= blksize ;
  903. SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ;
  904. SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable;
  905. SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard;
  906. SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block;
  907. SDIO_DataConfig(&SDIO_DataInitStructure);
  908.  
  909. timeout=SDIO_DATATIMEOUT;
  910.  
  911. if (DeviceMode == SD_POLLING_MODE)
  912. {
  913. INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!)
  914. 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
  915. {
  916. if(SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET) //发送区半空,表示至少存了8个字
  917. {
  918. if((tlen-bytestransferred)<SD_HALFFIFOBYTES)//不够32字节了
  919. {
  920. restwords=((tlen-bytestransferred)%4==0)?((tlen-bytestransferred)/4):((tlen-bytestransferred)/4+1);
  921.  
  922. for(count=0;count<restwords;count++,tempbuff++,bytestransferred+=4)
  923. {
  924. SDIO->FIFO=*tempbuff;
  925. }
  926. }else
  927. {
  928. for(count=0;count<8;count++)
  929. {
  930. SDIO->FIFO=*(tempbuff+count);
  931. }
  932. tempbuff+=8;
  933. bytestransferred+=32;
  934. }
  935. timeout=0X3FFFFFFF; //写数据溢出时间
  936. }else
  937. {
  938. if(timeout==0)return SD_DATA_TIMEOUT;
  939. timeout--;
  940. }
  941. }
  942. if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET) //数据超时错误
  943. {
  944. SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清错误标志
  945. return SD_DATA_TIMEOUT;
  946. }else if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET) //数据块CRC错误
  947. {
  948. SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志
  949. return SD_DATA_CRC_FAIL;
  950. }else if(SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET) //接收fifo下溢错误
  951. {
  952. SDIO_ClearFlag(SDIO_FLAG_TXUNDERR); //清错误标志
  953. return SD_TX_UNDERRUN;
  954. }else if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET) //接收起始位错误
  955. {
  956. SDIO_ClearFlag(SDIO_FLAG_STBITERR);//清错误标志
  957. return SD_START_BIT_ERR;
  958. }
  959.  
  960. INTX_ENABLE();//开启总中断
  961. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  962. }else if(DeviceMode==SD_DMA_MODE)
  963. {
  964. TransferError=SD_OK;
  965. StopCondition=0; //单块写,不需要发送停止传输指令
  966. TransferEnd=0; //传输结束标置位,在中断服务置1
  967. SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<4)|(1<<9); //配置产生数据接收完成中断
  968. SD_DMA_Config((u32*)buf,blksize,DMA_DIR_MemoryToPeripheral); //SDIO DMA配置
  969. SDIO->DCTRL|=1<<3; //SDIO DMA使能.
  970. while(((DMA2->LISR&(1<<27))==RESET)&&timeout)timeout--;//等待传输完成
  971. if(timeout==0)
  972. {
  973. SD_Init(); //重新初始化SD卡,可以解决写入死机的问题
  974. return SD_DATA_TIMEOUT; //超时
  975. }
  976. timeout=SDIO_DATATIMEOUT;
  977. while((TransferEnd==0)&&(TransferError==SD_OK)&&timeout)timeout--;
  978. if(timeout==0)return SD_DATA_TIMEOUT; //超时
  979. if(TransferError!=SD_OK)return TransferError;
  980. }
  981. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  982. errorstatus=IsCardProgramming(&cardstate);
  983. while((errorstatus==SD_OK)&&((cardstate==SD_CARD_PROGRAMMING)||(cardstate==SD_CARD_RECEIVING)))
  984. {
  985. errorstatus=IsCardProgramming(&cardstate);
  986. }
  987. return errorstatus;
  988. }
  989. //SD卡写多个块
  990. //buf:数据缓存区
  991. //addr:写地址
  992. //blksize:块大小
  993. //nblks:要写入的块数
  994. //返回值:错误状态
  995. SD_Error SD_WriteMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks)
  996. {
  997. SD_Error errorstatus = SD_OK;
  998. u8 power = 0, cardstate = 0;
  999. u32 timeout=0,bytestransferred=0;
  1000. u32 count = 0, restwords = 0;
  1001. u32 tlen=nblks*blksize; //总长度(字节)
  1002. u32 *tempbuff = (u32*)buf;
  1003. if(buf==NULL)return SD_INVALID_PARAMETER; //参数错误
  1004. SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA)
  1005.  
  1006. SDIO_DataInitStructure.SDIO_DataBlockSize= 0; ; //清除DPSM状态机配置
  1007. SDIO_DataInitStructure.SDIO_DataLength= 0 ;
  1008. SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ;
  1009. SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable;
  1010. SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard;
  1011. SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block;
  1012. SDIO_DataConfig(&SDIO_DataInitStructure);
  1013.  
  1014. if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了
  1015. if(CardType==SDIO_HIGH_CAPACITY_SD_CARD)//大容量卡
  1016. {
  1017. blksize=512;
  1018. addr>>=9;
  1019. }
  1020. if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0))
  1021. {
  1022. power=convert_from_bytes_to_power_of_two(blksize);
  1023.  
  1024. SDIO_CmdInitStructure.SDIO_Argument = blksize; //发送CMD16+设置数据长度为blksize,短响应
  1025. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
  1026. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1027. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1028. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1029. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1030.  
  1031. errorstatus=CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应
  1032.  
  1033. if(errorstatus!=SD_OK)return errorstatus; //响应错误
  1034.  
  1035. }else return SD_INVALID_PARAMETER;
  1036. if(nblks>1)
  1037. {
  1038. if(nblks*blksize>SD_MAX_DATA_LENGTH)return SD_INVALID_PARAMETER;
  1039. if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType))
  1040. {
  1041. //提高性能
  1042. SDIO_CmdInitStructure.SDIO_Argument = (u32)RCA<<16; //发送ACMD55,短响应
  1043. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
  1044. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1045. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1046. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1047. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1048.  
  1049. errorstatus=CmdResp1Error(SD_CMD_APP_CMD); //等待R1响应
  1050.  
  1051. if(errorstatus!=SD_OK)return errorstatus;
  1052.  
  1053. SDIO_CmdInitStructure.SDIO_Argument =nblks; //发送CMD23,设置块数量,短响应
  1054. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCK_COUNT;
  1055. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1056. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1057. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1058. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1059.  
  1060. errorstatus=CmdResp1Error(SD_CMD_SET_BLOCK_COUNT);//等待R1响应
  1061.  
  1062. if(errorstatus!=SD_OK)return errorstatus;
  1063.  
  1064. }
  1065.  
  1066. SDIO_CmdInitStructure.SDIO_Argument =addr; //发送CMD25,多块写指令,短响应
  1067. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_MULT_BLOCK;
  1068. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1069. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1070. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1071. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1072.  
  1073. errorstatus=CmdResp1Error(SD_CMD_WRITE_MULT_BLOCK); //等待R1响应
  1074.  
  1075. if(errorstatus!=SD_OK)return errorstatus;
  1076.  
  1077. SDIO_DataInitStructure.SDIO_DataBlockSize= power<<4; ; //blksize, 控制器到卡
  1078. SDIO_DataInitStructure.SDIO_DataLength= nblks*blksize ;
  1079. SDIO_DataInitStructure.SDIO_DataTimeOut=SD_DATATIMEOUT ;
  1080. SDIO_DataInitStructure.SDIO_DPSM=SDIO_DPSM_Enable;
  1081. SDIO_DataInitStructure.SDIO_TransferDir=SDIO_TransferDir_ToCard;
  1082. SDIO_DataInitStructure.SDIO_TransferMode=SDIO_TransferMode_Block;
  1083. SDIO_DataConfig(&SDIO_DataInitStructure);
  1084.  
  1085. if(DeviceMode==SD_POLLING_MODE)
  1086. {
  1087. timeout=SDIO_DATATIMEOUT;
  1088. INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!)
  1089. 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
  1090. {
  1091. if(SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET) //发送区半空,表示至少存了8字(32字节)
  1092. {
  1093. if((tlen-bytestransferred)<SD_HALFFIFOBYTES)//不够32字节了
  1094. {
  1095. restwords=((tlen-bytestransferred)%4==0)?((tlen-bytestransferred)/4):((tlen-bytestransferred)/4+1);
  1096. for(count=0;count<restwords;count++,tempbuff++,bytestransferred+=4)
  1097. {
  1098. SDIO->FIFO=*tempbuff;
  1099. }
  1100. }else //发送区半空,可以发送至少8字(32字节)数据
  1101. {
  1102. for(count=0;count<SD_HALFFIFO;count++)
  1103. {
  1104. SDIO->FIFO=*(tempbuff+count);
  1105. }
  1106. tempbuff+=SD_HALFFIFO;
  1107. bytestransferred+=SD_HALFFIFOBYTES;
  1108. }
  1109. timeout=0X3FFFFFFF; //写数据溢出时间
  1110. }else
  1111. {
  1112. if(timeout==0)return SD_DATA_TIMEOUT;
  1113. timeout--;
  1114. }
  1115. }
  1116. if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET) //数据超时错误
  1117. {
  1118. SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清错误标志
  1119. return SD_DATA_TIMEOUT;
  1120. }else if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET) //数据块CRC错误
  1121. {
  1122. SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志
  1123. return SD_DATA_CRC_FAIL;
  1124. }else if(SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET) //接收fifo下溢错误
  1125. {
  1126. SDIO_ClearFlag(SDIO_FLAG_TXUNDERR); //清错误标志
  1127. return SD_TX_UNDERRUN;
  1128. }else if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET) //接收起始位错误
  1129. {
  1130. SDIO_ClearFlag(SDIO_FLAG_STBITERR);//清错误标志
  1131. return SD_START_BIT_ERR;
  1132. }
  1133.  
  1134. if(SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET) //发送结束
  1135. {
  1136. if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType))
  1137. {
  1138. SDIO_CmdInitStructure.SDIO_Argument =0;//发送CMD12+结束传输
  1139. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION;
  1140. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1141. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1142. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1143. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1144.  
  1145. errorstatus=CmdResp1Error(SD_CMD_STOP_TRANSMISSION);//等待R1响应
  1146. if(errorstatus!=SD_OK)return errorstatus;
  1147. }
  1148. }
  1149. INTX_ENABLE();//开启总中断
  1150. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  1151. }else if(DeviceMode==SD_DMA_MODE)
  1152. {
  1153. TransferError=SD_OK;
  1154. StopCondition=1; //多块写,需要发送停止传输指令
  1155. TransferEnd=0; //传输结束标置位,在中断服务置1
  1156. SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<4)|(1<<9); //配置产生数据接收完成中断
  1157. SD_DMA_Config((u32*)buf,nblks*blksize,DMA_DIR_MemoryToPeripheral); //SDIO DMA配置
  1158. SDIO->DCTRL|=1<<3; //SDIO DMA使能.
  1159. timeout=SDIO_DATATIMEOUT;
  1160. while(((DMA2->LISR&(1<<27))==RESET)&&timeout)timeout--;//等待传输完成
  1161. if(timeout==0) //超时
  1162. {
  1163. SD_Init(); //重新初始化SD卡,可以解决写入死机的问题
  1164. return SD_DATA_TIMEOUT; //超时
  1165. }
  1166. timeout=SDIO_DATATIMEOUT;
  1167. while((TransferEnd==0)&&(TransferError==SD_OK)&&timeout)timeout--;
  1168. if(timeout==0)return SD_DATA_TIMEOUT; //超时
  1169. if(TransferError!=SD_OK)return TransferError;
  1170. }
  1171. }
  1172. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  1173. errorstatus=IsCardProgramming(&cardstate);
  1174. while((errorstatus==SD_OK)&&((cardstate==SD_CARD_PROGRAMMING)||(cardstate==SD_CARD_RECEIVING)))
  1175. {
  1176. errorstatus=IsCardProgramming(&cardstate);
  1177. }
  1178. return errorstatus;
  1179. }
  1180. //SDIO中断服务函数
  1181. void SDIO_IRQHandler(void)
  1182. {
  1183. SD_ProcessIRQSrc();//处理所有SDIO相关中断
  1184. }
  1185. //SDIO中断处理函数
  1186. //处理SDIO传输过程中的各种中断事务
  1187. //返回值:错误代码
  1188. SD_Error SD_ProcessIRQSrc(void)
  1189. {
  1190. if(SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)//接收完成中断
  1191. {
  1192. if (StopCondition==1)
  1193. {
  1194. SDIO_CmdInitStructure.SDIO_Argument =0;//发送CMD12+结束传输
  1195. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION;
  1196. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1197. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1198. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1199. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1200.  
  1201. TransferError=CmdResp1Error(SD_CMD_STOP_TRANSMISSION);
  1202. }else TransferError = SD_OK;
  1203. SDIO->ICR|=1<<8;//清除完成中断标记
  1204. SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断
  1205. TransferEnd = 1;
  1206. return(TransferError);
  1207. }
  1208. if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)//数据CRC错误
  1209. {
  1210. SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志
  1211. SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断
  1212. TransferError = SD_DATA_CRC_FAIL;
  1213. return(SD_DATA_CRC_FAIL);
  1214. }
  1215. if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)//数据超时错误
  1216. {
  1217. SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清中断标志
  1218. SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断
  1219. TransferError = SD_DATA_TIMEOUT;
  1220. return(SD_DATA_TIMEOUT);
  1221. }
  1222. if(SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)//FIFO上溢错误
  1223. {
  1224. SDIO_ClearFlag(SDIO_FLAG_RXOVERR); //清中断标志
  1225. SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断
  1226. TransferError = SD_RX_OVERRUN;
  1227. return(SD_RX_OVERRUN);
  1228. }
  1229. if(SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)//FIFO下溢错误
  1230. {
  1231. SDIO_ClearFlag(SDIO_FLAG_TXUNDERR); //清中断标志
  1232. SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断
  1233. TransferError = SD_TX_UNDERRUN;
  1234. return(SD_TX_UNDERRUN);
  1235. }
  1236. if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)//起始位错误
  1237. {
  1238. SDIO_ClearFlag(SDIO_FLAG_STBITERR); //清中断标志
  1239. SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断
  1240. TransferError = SD_START_BIT_ERR;
  1241. return(SD_START_BIT_ERR);
  1242. }
  1243. return(SD_OK);
  1244. }
  1245.  
  1246. //检查CMD0的执行状态
  1247. //返回值:sd卡错误码
  1248. SD_Error CmdError(void)
  1249. {
  1250. SD_Error errorstatus = SD_OK;
  1251. u32 timeout=SDIO_CMD0TIMEOUT;
  1252. while(timeout--)
  1253. {
  1254. if(SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) != RESET)break; //命令已发送(无需响应)
  1255. }
  1256. if(timeout==0)return SD_CMD_RSP_TIMEOUT;
  1257. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  1258. return errorstatus;
  1259. }
  1260. //检查R7响应的错误状态
  1261. //返回值:sd卡错误码
  1262. SD_Error CmdResp7Error(void)
  1263. {
  1264. SD_Error errorstatus=SD_OK;
  1265. u32 status;
  1266. u32 timeout=SDIO_CMD0TIMEOUT;
  1267. while(timeout--)
  1268. {
  1269. status=SDIO->STA;
  1270. 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)
  1271. }
  1272. if((timeout==0)||(status&(1<<2))) //响应超时
  1273. {
  1274. 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
  1275. SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除命令响应超时标志
  1276. return errorstatus;
  1277. }
  1278. if(status&1<<6) //成功接收到响应
  1279. {
  1280. errorstatus=SD_OK;
  1281. SDIO_ClearFlag(SDIO_FLAG_CMDREND); //清除响应标志
  1282. }
  1283. return errorstatus;
  1284. }
  1285. //检查R1响应的错误状态
  1286. //cmd:当前命令
  1287. //返回值:sd卡错误码
  1288. SD_Error CmdResp1Error(u8 cmd)
  1289. {
  1290. u32 status;
  1291. while(1)
  1292. {
  1293. status=SDIO->STA;
  1294. 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)
  1295. }
  1296. if(SDIO_GetFlagStatus(SDIO_FLAG_CTIMEOUT) != RESET) //响应超时
  1297. {
  1298. SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除命令响应超时标志
  1299. return SD_CMD_RSP_TIMEOUT;
  1300. }
  1301. if(SDIO_GetFlagStatus(SDIO_FLAG_CCRCFAIL) != RESET) //CRC错误
  1302. {
  1303. SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL); //清除标志
  1304. return SD_CMD_CRC_FAIL;
  1305. }
  1306. if(SDIO->RESPCMD!=cmd)return SD_ILLEGAL_CMD;//命令不匹配
  1307. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  1308. return (SD_Error)(SDIO->RESP1&SD_OCR_ERRORBITS);//返回卡响应
  1309. }
  1310. //检查R3响应的错误状态
  1311. //返回值:错误状态
  1312. SD_Error CmdResp3Error(void)
  1313. {
  1314. u32 status;
  1315. while(1)
  1316. {
  1317. status=SDIO->STA;
  1318. 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)
  1319. }
  1320. if(SDIO_GetFlagStatus(SDIO_FLAG_CTIMEOUT) != RESET) //响应超时
  1321. {
  1322. SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除命令响应超时标志
  1323. return SD_CMD_RSP_TIMEOUT;
  1324. }
  1325. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  1326. return SD_OK;
  1327. }
  1328. //检查R2响应的错误状态
  1329. //返回值:错误状态
  1330. SD_Error CmdResp2Error(void)
  1331. {
  1332. SD_Error errorstatus=SD_OK;
  1333. u32 status;
  1334. u32 timeout=SDIO_CMD0TIMEOUT;
  1335. while(timeout--)
  1336. {
  1337. status=SDIO->STA;
  1338. 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)
  1339. }
  1340. if((timeout==0)||(status&(1<<2))) //响应超时
  1341. {
  1342. errorstatus=SD_CMD_RSP_TIMEOUT;
  1343. SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除命令响应超时标志
  1344. return errorstatus;
  1345. }
  1346. if(SDIO_GetFlagStatus(SDIO_FLAG_CCRCFAIL) != RESET) //CRC错误
  1347. {
  1348. errorstatus=SD_CMD_CRC_FAIL;
  1349. SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL); //清除响应标志
  1350. }
  1351. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  1352. return errorstatus;
  1353. }
  1354. //检查R6响应的错误状态
  1355. //cmd:之前发送的命令
  1356. //prca:卡返回的RCA地址
  1357. //返回值:错误状态
  1358. SD_Error CmdResp6Error(u8 cmd,u16*prca)
  1359. {
  1360. SD_Error errorstatus=SD_OK;
  1361. u32 status;
  1362. u32 rspr1;
  1363. while(1)
  1364. {
  1365. status=SDIO->STA;
  1366. 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)
  1367. }
  1368. if(SDIO_GetFlagStatus(SDIO_FLAG_CTIMEOUT) != RESET) //响应超时
  1369. {
  1370. SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除命令响应超时标志
  1371. return SD_CMD_RSP_TIMEOUT;
  1372. }
  1373. if(SDIO_GetFlagStatus(SDIO_FLAG_CCRCFAIL) != RESET) //CRC错误
  1374. {
  1375. SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL); //清除响应标志
  1376. return SD_CMD_CRC_FAIL;
  1377. }
  1378. if(SDIO->RESPCMD!=cmd) //判断是否响应cmd命令
  1379. {
  1380. return SD_ILLEGAL_CMD;
  1381. }
  1382. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  1383. rspr1=SDIO->RESP1; //得到响应
  1384. if(SD_ALLZERO==(rspr1&(SD_R6_GENERAL_UNKNOWN_ERROR|SD_R6_ILLEGAL_CMD|SD_R6_COM_CRC_FAILED)))
  1385. {
  1386. *prca=(u16)(rspr1>>16); //右移16位得到,rca
  1387. return errorstatus;
  1388. }
  1389. if(rspr1&SD_R6_GENERAL_UNKNOWN_ERROR)return SD_GENERAL_UNKNOWN_ERROR;
  1390. if(rspr1&SD_R6_ILLEGAL_CMD)return SD_ILLEGAL_CMD;
  1391. if(rspr1&SD_R6_COM_CRC_FAILED)return SD_COM_CRC_FAILED;
  1392. return errorstatus;
  1393. }
  1394.  
  1395. //SDIO使能宽总线模式
  1396. //enx:0,不使能;1,使能;
  1397. //返回值:错误状态
  1398. SD_Error SDEnWideBus(u8 enx)
  1399. {
  1400. SD_Error errorstatus = SD_OK;
  1401. u32 scr[2]={0,0};
  1402. u8 arg=0X00;
  1403. if(enx)arg=0X02;
  1404. else arg=0X00;
  1405. if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//SD卡处于LOCKED状态
  1406. errorstatus=FindSCR(RCA,scr); //得到SCR寄存器数据
  1407. if(errorstatus!=SD_OK)return errorstatus;
  1408. if((scr[1]&SD_WIDE_BUS_SUPPORT)!=SD_ALLZERO) //支持宽总线
  1409. {
  1410. SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;//发送CMD55+RCA,短响应
  1411. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
  1412. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1413. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1414. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1415. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1416.  
  1417. errorstatus=CmdResp1Error(SD_CMD_APP_CMD);
  1418.  
  1419. if(errorstatus!=SD_OK)return errorstatus;
  1420.  
  1421. SDIO_CmdInitStructure.SDIO_Argument = arg;//发送ACMD6,短响应,参数:10,4位;00,1位.
  1422. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
  1423. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1424. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1425. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1426. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1427.  
  1428. errorstatus=CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);
  1429.  
  1430. return errorstatus;
  1431. }else return SD_REQUEST_NOT_APPLICABLE; //不支持宽总线设置
  1432. }
  1433. //检查卡是否正在执行写操作
  1434. //pstatus:当前状态.
  1435. //返回值:错误代码
  1436. SD_Error IsCardProgramming(u8 *pstatus)
  1437. {
  1438. vu32 respR1 = 0, status = 0;
  1439.  
  1440. SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16; //卡相对地址参数
  1441. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;//发送CMD13
  1442. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1443. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1444. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1445. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1446.  
  1447. status=SDIO->STA;
  1448.  
  1449. while(!(status&((1<<0)|(1<<6)|(1<<2))))status=SDIO->STA;//等待操作完成
  1450. if(SDIO_GetFlagStatus(SDIO_FLAG_CCRCFAIL) != RESET) //CRC检测失败
  1451. {
  1452. SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL); //清除错误标记
  1453. return SD_CMD_CRC_FAIL;
  1454. }
  1455. if(SDIO_GetFlagStatus(SDIO_FLAG_CTIMEOUT) != RESET) //命令超时
  1456. {
  1457. SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT); //清除错误标记
  1458. return SD_CMD_RSP_TIMEOUT;
  1459. }
  1460. if(SDIO->RESPCMD!=SD_CMD_SEND_STATUS)return SD_ILLEGAL_CMD;
  1461. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  1462. respR1=SDIO->RESP1;
  1463. *pstatus=(u8)((respR1>>9)&0x0000000F);
  1464. return SD_OK;
  1465. }
  1466. //读取当前卡状态
  1467. //pcardstatus:卡状态
  1468. //返回值:错误代码
  1469. SD_Error SD_SendStatus(uint32_t *pcardstatus)
  1470. {
  1471. SD_Error errorstatus = SD_OK;
  1472. if(pcardstatus==NULL)
  1473. {
  1474. errorstatus=SD_INVALID_PARAMETER;
  1475. return errorstatus;
  1476. }
  1477.  
  1478. SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;//发送CMD13,短响应
  1479. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
  1480. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1481. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1482. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1483. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1484.  
  1485. errorstatus=CmdResp1Error(SD_CMD_SEND_STATUS); //查询响应状态
  1486. if(errorstatus!=SD_OK)return errorstatus;
  1487. *pcardstatus=SDIO->RESP1;//读取响应值
  1488. return errorstatus;
  1489. }
  1490. //返回SD卡的状态
  1491. //返回值:SD卡状态
  1492. SDCardState SD_GetState(void)
  1493. {
  1494. u32 resp1=0;
  1495. if(SD_SendStatus(&resp1)!=SD_OK)return SD_CARD_ERROR;
  1496. else return (SDCardState)((resp1>>9) & 0x0F);
  1497. }
  1498. //查找SD卡的SCR寄存器值
  1499. //rca:卡相对地址
  1500. //pscr:数据缓存区(存储SCR内容)
  1501. //返回值:错误状态
  1502. SD_Error FindSCR(u16 rca,u32 *pscr)
  1503. {
  1504. u32 index = 0;
  1505. SD_Error errorstatus = SD_OK;
  1506. u32 tempscr[2]={0,0};
  1507.  
  1508. SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8; //发送CMD16,短响应,设置Block Size为8字节
  1509. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN; // cmd16
  1510. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1
  1511. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1512. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1513. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1514.  
  1515. errorstatus=CmdResp1Error(SD_CMD_SET_BLOCKLEN);
  1516.  
  1517. if(errorstatus!=SD_OK)return errorstatus;
  1518.  
  1519. SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
  1520. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;//发送CMD55,短响应
  1521. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  1522. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1523. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1524. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1525.  
  1526. errorstatus=CmdResp1Error(SD_CMD_APP_CMD);
  1527. if(errorstatus!=SD_OK)return errorstatus;
  1528.  
  1529. SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
  1530. SDIO_DataInitStructure.SDIO_DataLength = 8; //8个字节长度,block为8字节,SD卡到SDIO.
  1531. SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b ; //块大小8byte
  1532. SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
  1533. SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
  1534. SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
  1535. SDIO_DataConfig(&SDIO_DataInitStructure);
  1536.  
  1537. SDIO_CmdInitStructure.SDIO_Argument = 0x0;
  1538. SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_SEND_SCR; //发送ACMD51,短响应,参数为0
  1539. SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short; //r1
  1540. SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  1541. SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  1542. SDIO_SendCommand(&SDIO_CmdInitStructure);
  1543.  
  1544. errorstatus=CmdResp1Error(SD_CMD_SD_APP_SEND_SCR);
  1545. if(errorstatus!=SD_OK)return errorstatus;
  1546. while(!(SDIO->STA&(SDIO_FLAG_RXOVERR|SDIO_FLAG_DCRCFAIL|SDIO_FLAG_DTIMEOUT|SDIO_FLAG_DBCKEND|SDIO_FLAG_STBITERR)))
  1547. {
  1548. if(SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)//接收FIFO数据可用
  1549. {
  1550. *(tempscr+index)=SDIO->FIFO; //读取FIFO内容
  1551. index++;
  1552. if(index>=2)break;
  1553. }
  1554. }
  1555. if(SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET) //数据超时错误
  1556. {
  1557. SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT); //清错误标志
  1558. return SD_DATA_TIMEOUT;
  1559. }else if(SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET) //数据块CRC错误
  1560. {
  1561. SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL); //清错误标志
  1562. return SD_DATA_CRC_FAIL;
  1563. }else if(SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET) //接收fifo上溢错误
  1564. {
  1565. SDIO_ClearFlag(SDIO_FLAG_RXOVERR); //清错误标志
  1566. return SD_RX_OVERRUN;
  1567. }else if(SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET) //接收起始位错误
  1568. {
  1569. SDIO_ClearFlag(SDIO_FLAG_STBITERR);//清错误标志
  1570. return SD_START_BIT_ERR;
  1571. }
  1572. SDIO_ClearFlag(SDIO_STATIC_FLAGS);//清除所有标记
  1573. //把数据顺序按8位为单位倒过来.
  1574. *(pscr+1)=((tempscr[0]&SD_0TO7BITS)<<24)|((tempscr[0]&SD_8TO15BITS)<<8)|((tempscr[0]&SD_16TO23BITS)>>8)|((tempscr[0]&SD_24TO31BITS)>>24);
  1575. *(pscr)=((tempscr[1]&SD_0TO7BITS)<<24)|((tempscr[1]&SD_8TO15BITS)<<8)|((tempscr[1]&SD_16TO23BITS)>>8)|((tempscr[1]&SD_24TO31BITS)>>24);
  1576. return errorstatus;
  1577. }
  1578. //得到NumberOfBytes以2为底的指数.
  1579. //NumberOfBytes:字节数.
  1580. //返回值:以2为底的指数值
  1581. u8 convert_from_bytes_to_power_of_two(u16 NumberOfBytes)
  1582. {
  1583. u8 count=0;
  1584. while(NumberOfBytes!=1)
  1585. {
  1586. NumberOfBytes>>=1;
  1587. count++;
  1588. }
  1589. return count;
  1590. }
  1591.  
  1592. //配置SDIO DMA
  1593. //mbuf:存储器地址
  1594. //bufsize:传输数据量
  1595. //dir:方向;DMA_DIR_MemoryToPeripheral 存储器-->SDIO(写数据);DMA_DIR_PeripheralToMemory SDIO-->存储器(读数据);
  1596. void SD_DMA_Config(u32*mbuf,u32 bufsize,u32 dir)
  1597. {
  1598.  
  1599. DMA_InitTypeDef DMA_InitStructure;
  1600.  
  1601. while (DMA_GetCmdStatus(DMA2_Stream3) != DISABLE){}//等待DMA可配置
  1602.  
  1603. DMA_DeInit(DMA2_Stream3);//清空之前该stream3上的所有中断标志
  1604.  
  1605. DMA_InitStructure.DMA_Channel = DMA_Channel_4; //通道选择
  1606. DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&SDIO->FIFO;//DMA外设地址
  1607. DMA_InitStructure.DMA_Memory0BaseAddr = (u32)mbuf;//DMA 存储器0地址
  1608. DMA_InitStructure.DMA_DIR = dir;//存储器到外设模式
  1609. DMA_InitStructure.DMA_BufferSize = 0;//数据传输量
  1610. DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//外设非增量模式
  1611. DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;//存储器增量模式
  1612. DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;//外设数据长度:32位
  1613. DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;//存储器数据长度:32位
  1614. DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;// 使用普通模式
  1615. DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;//最高优先级
  1616. DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable; //FIFO使能
  1617. DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;//全FIFO
  1618. DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC4;//外设突发4次传输
  1619. DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_INC4;//存储器突发4次传输
  1620. DMA_Init(DMA2_Stream3, &DMA_InitStructure);//初始化DMA Stream
  1621.  
  1622. DMA_FlowControllerConfig(DMA2_Stream3,DMA_FlowCtrl_Peripheral);//外设流控制
  1623.  
  1624. DMA_Cmd(DMA2_Stream3 ,ENABLE);//开启DMA传输
  1625.  
  1626. }
  1627.  
  1628. //读SD卡
  1629. //buf:读数据缓存区
  1630. //sector:扇区地址
  1631. //cnt:扇区个数
  1632. //返回值:错误状态;0,正常;其他,错误代码;
  1633. u8 SD_ReadDisk(u8*buf,u32 sector,u8 cnt)
  1634. {
  1635. u8 sta=SD_OK;
  1636. long long lsector=sector;
  1637. u8 n;
  1638. lsector<<=9;
  1639. if((u32)buf%4!=0)
  1640. {
  1641. for(n=0;n<cnt;n++)
  1642. {
  1643. sta=SD_ReadBlock(SDIO_DATA_BUFFER,lsector+512*n,512);//单个sector的读操作
  1644. memcpy(buf,SDIO_DATA_BUFFER,512);
  1645. buf+=512;
  1646. }
  1647. }else
  1648. {
  1649. if(cnt==1)sta=SD_ReadBlock(buf,lsector,512); //单个sector的读操作
  1650. else sta=SD_ReadMultiBlocks(buf,lsector,512,cnt);//多个sector
  1651. }
  1652. return sta;
  1653. }
  1654. //写SD卡
  1655. //buf:写数据缓存区
  1656. //sector:扇区地址
  1657. //cnt:扇区个数
  1658. //返回值:错误状态;0,正常;其他,错误代码;
  1659. u8 SD_WriteDisk(u8*buf,u32 sector,u8 cnt)
  1660. {
  1661. u8 sta=SD_OK;
  1662. u8 n;
  1663. long long lsector=sector;
  1664. lsector<<=9;
  1665. if((u32)buf%4!=0)
  1666. {
  1667. for(n=0;n<cnt;n++)
  1668. {
  1669. memcpy(SDIO_DATA_BUFFER,buf,512);
  1670. sta=SD_WriteBlock(SDIO_DATA_BUFFER,lsector+512*n,512);//单个sector的写操作
  1671. buf+=512;
  1672. }
  1673. }else
  1674. {
  1675. if(cnt==1)sta=SD_WriteBlock(buf,lsector,512); //单个sector的写操作
  1676. else sta=SD_WriteMultiBlocks(buf,lsector,512,cnt); //多个sector
  1677. }
  1678. return sta;
  1679. }

  

这是头文件《sdio_sdcard.h》

  1. #ifndef __SDIO_SDCARD_H
  2. #define __SDIO_SDCARD_H
  3. #include "stm32f4xx.h"
  4.  
  5. //SDIO相关标志位,拷贝自:stm32f4xx_sdio.h
  6. #define SDIO_FLAG_CCRCFAIL ((uint32_t)0x00000001)
  7. #define SDIO_FLAG_DCRCFAIL ((uint32_t)0x00000002)
  8. #define SDIO_FLAG_CTIMEOUT ((uint32_t)0x00000004)
  9. #define SDIO_FLAG_DTIMEOUT ((uint32_t)0x00000008)
  10. #define SDIO_FLAG_TXUNDERR ((uint32_t)0x00000010)
  11. #define SDIO_FLAG_RXOVERR ((uint32_t)0x00000020)
  12. #define SDIO_FLAG_CMDREND ((uint32_t)0x00000040)
  13. #define SDIO_FLAG_CMDSENT ((uint32_t)0x00000080)
  14. #define SDIO_FLAG_DATAEND ((uint32_t)0x00000100)
  15. #define SDIO_FLAG_STBITERR ((uint32_t)0x00000200)
  16. #define SDIO_FLAG_DBCKEND ((uint32_t)0x00000400)
  17. #define SDIO_FLAG_CMDACT ((uint32_t)0x00000800)
  18. #define SDIO_FLAG_TXACT ((uint32_t)0x00001000)
  19. #define SDIO_FLAG_RXACT ((uint32_t)0x00002000)
  20. #define SDIO_FLAG_TXFIFOHE ((uint32_t)0x00004000)
  21. #define SDIO_FLAG_RXFIFOHF ((uint32_t)0x00008000)
  22. #define SDIO_FLAG_TXFIFOF ((uint32_t)0x00010000)
  23. #define SDIO_FLAG_RXFIFOF ((uint32_t)0x00020000)
  24. #define SDIO_FLAG_TXFIFOE ((uint32_t)0x00040000)
  25. #define SDIO_FLAG_RXFIFOE ((uint32_t)0x00080000)
  26. #define SDIO_FLAG_TXDAVL ((uint32_t)0x00100000)
  27. #define SDIO_FLAG_RXDAVL ((uint32_t)0x00200000)
  28. #define SDIO_FLAG_SDIOIT ((uint32_t)0x00400000)
  29. #define SDIO_FLAG_CEATAEND ((uint32_t)0x00800000)
  30.  
  31. //用户配置区
  32. //SDIO时钟计算公式:SDIO_CK时钟=SDIOCLK/[clkdiv+2];其中,SDIOCLK固定为48Mhz
  33. //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
  34. //卡,可能也会出错,出错就请降低时钟
  35. #define SDIO_INIT_CLK_DIV 0x76 //SDIO初始化频率,最大400Kh
  36. #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
  37.  
  38. ////////////////////////////////////////////////////////////////////////////////////////////////////
  39. //SDIO工作模式定义,通过SD_SetDeviceMode函数设置.
  40. #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.
  41. #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.
  42.  
  43. //SDIO 各种错误枚举定义
  44. typedef enum
  45. {
  46. //特殊错误定义
  47. SD_CMD_CRC_FAIL = (1), /*!< Command response received (but CRC check failed) */
  48. SD_DATA_CRC_FAIL = (2), /*!< Data bock sent/received (CRC check Failed) */
  49. SD_CMD_RSP_TIMEOUT = (3), /*!< Command response timeout */
  50. SD_DATA_TIMEOUT = (4), /*!< Data time out */
  51. SD_TX_UNDERRUN = (5), /*!< Transmit FIFO under-run */
  52. SD_RX_OVERRUN = (6), /*!< Receive FIFO over-run */
  53. SD_START_BIT_ERR = (7), /*!< Start bit not detected on all data signals in widE bus mode */
  54. SD_CMD_OUT_OF_RANGE = (8), /*!< CMD's argument was out of range.*/
  55. SD_ADDR_MISALIGNED = (9), /*!< Misaligned address */
  56. 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 */
  57. SD_ERASE_SEQ_ERR = (11), /*!< An error in the sequence of erase command occurs.*/
  58. SD_BAD_ERASE_PARAM = (12), /*!< An Invalid selection for erase groups */
  59. SD_WRITE_PROT_VIOLATION = (13), /*!< Attempt to program a write protect block */
  60. 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 */
  61. SD_COM_CRC_FAILED = (15), /*!< CRC check of the previous command failed */
  62. SD_ILLEGAL_CMD = (16), /*!< Command is not legal for the card state */
  63. SD_CARD_ECC_FAILED = (17), /*!< Card internal ECC was applied but failed to correct the data */
  64. SD_CC_ERROR = (18), /*!< Internal card controller error */
  65. SD_GENERAL_UNKNOWN_ERROR = (19), /*!< General or Unknown error */
  66. SD_STREAM_READ_UNDERRUN = (20), /*!< The card could not sustain data transfer in stream read operation. */
  67. SD_STREAM_WRITE_OVERRUN = (21), /*!< The card could not sustain data programming in stream mode */
  68. SD_CID_CSD_OVERWRITE = (22), /*!< CID/CSD overwrite error */
  69. SD_WP_ERASE_SKIP = (23), /*!< only partial address space was erased */
  70. SD_CARD_ECC_DISABLED = (24), /*!< Command has been executed without using internal ECC */
  71. SD_ERASE_RESET = (25), /*!< Erase sequence was cleared before executing because an out of erase sequence command was received */
  72. SD_AKE_SEQ_ERROR = (26), /*!< Error in sequence of authentication. */
  73. SD_INVALID_VOLTRANGE = (27),
  74. SD_ADDR_OUT_OF_RANGE = (28),
  75. SD_SWITCH_ERROR = (29),
  76. SD_SDIO_DISABLED = (30),
  77. SD_SDIO_FUNCTION_BUSY = (31),
  78. SD_SDIO_FUNCTION_FAILED = (32),
  79. SD_SDIO_UNKNOWN_FUNCTION = (33),
  80. //标准错误定义
  81. SD_INTERNAL_ERROR,
  82. SD_NOT_CONFIGURED,
  83. SD_REQUEST_PENDING,
  84. SD_REQUEST_NOT_APPLICABLE,
  85. SD_INVALID_PARAMETER,
  86. SD_UNSUPPORTED_FEATURE,
  87. SD_UNSUPPORTED_HW,
  88. SD_ERROR,
  89. SD_OK = 0
  90. } SD_Error;
  91.  
  92. //SD卡CSD寄存器数据
  93. typedef struct
  94. {
  95. u8 CSDStruct; /*!< CSD structure */
  96. u8 SysSpecVersion; /*!< System specification version */
  97. u8 Reserved1; /*!< Reserved */
  98. u8 TAAC; /*!< Data read access-time 1 */
  99. u8 NSAC; /*!< Data read access-time 2 in CLK cycles */
  100. u8 MaxBusClkFrec; /*!< Max. bus clock frequency */
  101. u16 CardComdClasses; /*!< Card command classes */
  102. u8 RdBlockLen; /*!< Max. read data block length */
  103. u8 PartBlockRead; /*!< Partial blocks for read allowed */
  104. u8 WrBlockMisalign; /*!< Write block misalignment */
  105. u8 RdBlockMisalign; /*!< Read block misalignment */
  106. u8 DSRImpl; /*!< DSR implemented */
  107. u8 Reserved2; /*!< Reserved */
  108. u32 DeviceSize; /*!< Device Size */
  109. u8 MaxRdCurrentVDDMin; /*!< Max. read current @ VDD min */
  110. u8 MaxRdCurrentVDDMax; /*!< Max. read current @ VDD max */
  111. u8 MaxWrCurrentVDDMin; /*!< Max. write current @ VDD min */
  112. u8 MaxWrCurrentVDDMax; /*!< Max. write current @ VDD max */
  113. u8 DeviceSizeMul; /*!< Device size multiplier */
  114. u8 EraseGrSize; /*!< Erase group size */
  115. u8 EraseGrMul; /*!< Erase group size multiplier */
  116. u8 WrProtectGrSize; /*!< Write protect group size */
  117. u8 WrProtectGrEnable; /*!< Write protect group enable */
  118. u8 ManDeflECC; /*!< Manufacturer default ECC */
  119. u8 WrSpeedFact; /*!< Write speed factor */
  120. u8 MaxWrBlockLen; /*!< Max. write data block length */
  121. u8 WriteBlockPaPartial; /*!< Partial blocks for write allowed */
  122. u8 Reserved3; /*!< Reserded */
  123. u8 ContentProtectAppli; /*!< Content protection application */
  124. u8 FileFormatGrouop; /*!< File format group */
  125. u8 CopyFlag; /*!< Copy flag (OTP) */
  126. u8 PermWrProtect; /*!< Permanent write protection */
  127. u8 TempWrProtect; /*!< Temporary write protection */
  128. u8 FileFormat; /*!< File Format */
  129. u8 ECC; /*!< ECC code */
  130. u8 CSD_CRC; /*!< CSD CRC */
  131. u8 Reserved4; /*!< always 1*/
  132. } SD_CSD;
  133.  
  134. //SD卡CID寄存器数据
  135. typedef struct
  136. {
  137. u8 ManufacturerID; /*!< ManufacturerID */
  138. u16 OEM_AppliID; /*!< OEM/Application ID */
  139. u32 ProdName1; /*!< Product Name part1 */
  140. u8 ProdName2; /*!< Product Name part2*/
  141. u8 ProdRev; /*!< Product Revision */
  142. u32 ProdSN; /*!< Product Serial Number */
  143. u8 Reserved1; /*!< Reserved1 */
  144. u16 ManufactDate; /*!< Manufacturing Date */
  145. u8 CID_CRC; /*!< CID CRC */
  146. u8 Reserved2; /*!< always 1 */
  147. } SD_CID;
  148. //SD卡状态
  149. typedef enum
  150. {
  151. SD_CARD_READY = ((uint32_t)0x00000001),
  152. SD_CARD_IDENTIFICATION = ((uint32_t)0x00000002),
  153. SD_CARD_STANDBY = ((uint32_t)0x00000003),
  154. SD_CARD_TRANSFER = ((uint32_t)0x00000004),
  155. SD_CARD_SENDING = ((uint32_t)0x00000005),
  156. SD_CARD_RECEIVING = ((uint32_t)0x00000006),
  157. SD_CARD_PROGRAMMING = ((uint32_t)0x00000007),
  158. SD_CARD_DISCONNECTED = ((uint32_t)0x00000008),
  159. SD_CARD_ERROR = ((uint32_t)0x000000FF)
  160. }SDCardState;
  161.  
  162. //SD卡信息,包括CSD,CID等数据
  163. typedef struct
  164. {
  165. SD_CSD SD_csd;
  166. SD_CID SD_cid;
  167. long long CardCapacity; //SD卡容量,单位:字节,最大支持2^64字节大小的卡.
  168. u32 CardBlockSize; //SD卡块大小
  169. u16 RCA; //卡相对地址
  170. u8 CardType; //卡类型
  171. } SD_CardInfo;
  172. extern SD_CardInfo SDCardInfo;//SD卡信息
  173. ////////////////////////////////////////////////////////////////////////////////////////////////////
  174. //SDIO 指令集
  175. #define SD_CMD_GO_IDLE_STATE ((u8)0)
  176. #define SD_CMD_SEND_OP_COND ((u8)1)
  177. #define SD_CMD_ALL_SEND_CID ((u8)2)
  178. #define SD_CMD_SET_REL_ADDR ((u8)3) /*!< SDIO_SEND_REL_ADDR for SD Card */
  179. #define SD_CMD_SET_DSR ((u8)4)
  180. #define SD_CMD_SDIO_SEN_OP_COND ((u8)5)
  181. #define SD_CMD_HS_SWITCH ((u8)6)
  182. #define SD_CMD_SEL_DESEL_CARD ((u8)7)
  183. #define SD_CMD_HS_SEND_EXT_CSD ((u8)8)
  184. #define SD_CMD_SEND_CSD ((u8)9)
  185. #define SD_CMD_SEND_CID ((u8)10)
  186. #define SD_CMD_READ_DAT_UNTIL_STOP ((u8)11) /*!< SD Card doesn't support it */
  187. #define SD_CMD_STOP_TRANSMISSION ((u8)12)
  188. #define SD_CMD_SEND_STATUS ((u8)13)
  189. #define SD_CMD_HS_BUSTEST_READ ((u8)14)
  190. #define SD_CMD_GO_INACTIVE_STATE ((u8)15)
  191. #define SD_CMD_SET_BLOCKLEN ((u8)16)
  192. #define SD_CMD_READ_SINGLE_BLOCK ((u8)17)
  193. #define SD_CMD_READ_MULT_BLOCK ((u8)18)
  194. #define SD_CMD_HS_BUSTEST_WRITE ((u8)19)
  195. #define SD_CMD_WRITE_DAT_UNTIL_STOP ((u8)20)
  196. #define SD_CMD_SET_BLOCK_COUNT ((u8)23)
  197. #define SD_CMD_WRITE_SINGLE_BLOCK ((u8)24)
  198. #define SD_CMD_WRITE_MULT_BLOCK ((u8)25)
  199. #define SD_CMD_PROG_CID ((u8)26)
  200. #define SD_CMD_PROG_CSD ((u8)27)
  201. #define SD_CMD_SET_WRITE_PROT ((u8)28)
  202. #define SD_CMD_CLR_WRITE_PROT ((u8)29)
  203. #define SD_CMD_SEND_WRITE_PROT ((u8)30)
  204. #define SD_CMD_SD_ERASE_GRP_START ((u8)32) /*!< To set the address of the first write
  205. block to be erased. (For SD card only) */
  206. #define SD_CMD_SD_ERASE_GRP_END ((u8)33) /*!< To set the address of the last write block of the
  207. continuous range to be erased. (For SD card only) */
  208. #define SD_CMD_ERASE_GRP_START ((u8)35) /*!< To set the address of the first write block to be erased.
  209. (For MMC card only spec 3.31) */
  210.  
  211. #define SD_CMD_ERASE_GRP_END ((u8)36) /*!< To set the address of the last write block of the
  212. continuous range to be erased. (For MMC card only spec 3.31) */
  213.  
  214. #define SD_CMD_ERASE ((u8)38)
  215. #define SD_CMD_FAST_IO ((u8)39) /*!< SD Card doesn't support it */
  216. #define SD_CMD_GO_IRQ_STATE ((u8)40) /*!< SD Card doesn't support it */
  217. #define SD_CMD_LOCK_UNLOCK ((u8)42)
  218. #define SD_CMD_APP_CMD ((u8)55)
  219. #define SD_CMD_GEN_CMD ((u8)56)
  220. #define SD_CMD_NO_CMD ((u8)64)
  221.  
  222. /**
  223. * @brief Following commands are SD Card Specific commands.
  224. * SDIO_APP_CMD :CMD55 should be sent before sending these commands.
  225. */
  226. #define SD_CMD_APP_SD_SET_BUSWIDTH ((u8)6) /*!< For SD Card only */
  227. #define SD_CMD_SD_APP_STAUS ((u8)13) /*!< For SD Card only */
  228. #define SD_CMD_SD_APP_SEND_NUM_WRITE_BLOCKS ((u8)22) /*!< For SD Card only */
  229. #define SD_CMD_SD_APP_OP_COND ((u8)41) /*!< For SD Card only */
  230. #define SD_CMD_SD_APP_SET_CLR_CARD_DETECT ((u8)42) /*!< For SD Card only */
  231. #define SD_CMD_SD_APP_SEND_SCR ((u8)51) /*!< For SD Card only */
  232. #define SD_CMD_SDIO_RW_DIRECT ((u8)52) /*!< For SD I/O Card only */
  233. #define SD_CMD_SDIO_RW_EXTENDED ((u8)53) /*!< For SD I/O Card only */
  234.  
  235. /**
  236. * @brief Following commands are SD Card Specific security commands.
  237. * SDIO_APP_CMD should be sent before sending these commands.
  238. */
  239. #define SD_CMD_SD_APP_GET_MKB ((u8)43) /*!< For SD Card only */
  240. #define SD_CMD_SD_APP_GET_MID ((u8)44) /*!< For SD Card only */
  241. #define SD_CMD_SD_APP_SET_CER_RN1 ((u8)45) /*!< For SD Card only */
  242. #define SD_CMD_SD_APP_GET_CER_RN2 ((u8)46) /*!< For SD Card only */
  243. #define SD_CMD_SD_APP_SET_CER_RES2 ((u8)47) /*!< For SD Card only */
  244. #define SD_CMD_SD_APP_GET_CER_RES1 ((u8)48) /*!< For SD Card only */
  245. #define SD_CMD_SD_APP_SECURE_READ_MULTIPLE_BLOCK ((u8)18) /*!< For SD Card only */
  246. #define SD_CMD_SD_APP_SECURE_WRITE_MULTIPLE_BLOCK ((u8)25) /*!< For SD Card only */
  247. #define SD_CMD_SD_APP_SECURE_ERASE ((u8)38) /*!< For SD Card only */
  248. #define SD_CMD_SD_APP_CHANGE_SECURE_AREA ((u8)49) /*!< For SD Card only */
  249. #define SD_CMD_SD_APP_SECURE_WRITE_MKB ((u8)48) /*!< For SD Card only */
  250.  
  251. //支持的SD卡定义
  252. #define SDIO_STD_CAPACITY_SD_CARD_V1_1 ((u32)0x00000000)
  253. #define SDIO_STD_CAPACITY_SD_CARD_V2_0 ((u32)0x00000001)
  254. #define SDIO_HIGH_CAPACITY_SD_CARD ((u32)0x00000002)
  255. #define SDIO_MULTIMEDIA_CARD ((u32)0x00000003)
  256. #define SDIO_SECURE_DIGITAL_IO_CARD ((u32)0x00000004)
  257. #define SDIO_HIGH_SPEED_MULTIMEDIA_CARD ((u32)0x00000005)
  258. #define SDIO_SECURE_DIGITAL_IO_COMBO_CARD ((u32)0x00000006)
  259. #define SDIO_HIGH_CAPACITY_MMC_CARD ((u32)0x00000007)
  260.  
  261. //SDIO相关参数定义
  262. #define NULL 0
  263. #define SDIO_STATIC_FLAGS ((u32)0x000005FF)
  264. #define SDIO_CMD0TIMEOUT ((u32)0x00010000)
  265. #define SDIO_DATATIMEOUT ((u32)0xFFFFFFFF)
  266. #define SDIO_FIFO_Address ((u32)0x40018080)
  267.  
  268. //Mask for errors Card Status R1 (OCR Register)
  269. #define SD_OCR_ADDR_OUT_OF_RANGE ((u32)0x80000000)
  270. #define SD_OCR_ADDR_MISALIGNED ((u32)0x40000000)
  271. #define SD_OCR_BLOCK_LEN_ERR ((u32)0x20000000)
  272. #define SD_OCR_ERASE_SEQ_ERR ((u32)0x10000000)
  273. #define SD_OCR_BAD_ERASE_PARAM ((u32)0x08000000)
  274. #define SD_OCR_WRITE_PROT_VIOLATION ((u32)0x04000000)
  275. #define SD_OCR_LOCK_UNLOCK_FAILED ((u32)0x01000000)
  276. #define SD_OCR_COM_CRC_FAILED ((u32)0x00800000)
  277. #define SD_OCR_ILLEGAL_CMD ((u32)0x00400000)
  278. #define SD_OCR_CARD_ECC_FAILED ((u32)0x00200000)
  279. #define SD_OCR_CC_ERROR ((u32)0x00100000)
  280. #define SD_OCR_GENERAL_UNKNOWN_ERROR ((u32)0x00080000)
  281. #define SD_OCR_STREAM_READ_UNDERRUN ((u32)0x00040000)
  282. #define SD_OCR_STREAM_WRITE_OVERRUN ((u32)0x00020000)
  283. #define SD_OCR_CID_CSD_OVERWRIETE ((u32)0x00010000)
  284. #define SD_OCR_WP_ERASE_SKIP ((u32)0x00008000)
  285. #define SD_OCR_CARD_ECC_DISABLED ((u32)0x00004000)
  286. #define SD_OCR_ERASE_RESET ((u32)0x00002000)
  287. #define SD_OCR_AKE_SEQ_ERROR ((u32)0x00000008)
  288. #define SD_OCR_ERRORBITS ((u32)0xFDFFE008)
  289.  
  290. //Masks for R6 Response
  291. #define SD_R6_GENERAL_UNKNOWN_ERROR ((u32)0x00002000)
  292. #define SD_R6_ILLEGAL_CMD ((u32)0x00004000)
  293. #define SD_R6_COM_CRC_FAILED ((u32)0x00008000)
  294.  
  295. #define SD_VOLTAGE_WINDOW_SD ((u32)0x80100000)
  296. #define SD_HIGH_CAPACITY ((u32)0x40000000)
  297. #define SD_STD_CAPACITY ((u32)0x00000000)
  298. #define SD_CHECK_PATTERN ((u32)0x000001AA)
  299. #define SD_VOLTAGE_WINDOW_MMC ((u32)0x80FF8000)
  300.  
  301. #define SD_MAX_VOLT_TRIAL ((u32)0x0000FFFF)
  302. #define SD_ALLZERO ((u32)0x00000000)
  303.  
  304. #define SD_WIDE_BUS_SUPPORT ((u32)0x00040000)
  305. #define SD_SINGLE_BUS_SUPPORT ((u32)0x00010000)
  306. #define SD_CARD_LOCKED ((u32)0x02000000)
  307. #define SD_CARD_PROGRAMMING ((u32)0x00000007)
  308. #define SD_CARD_RECEIVING ((u32)0x00000006)
  309. #define SD_DATATIMEOUT ((u32)0xFFFFFFFF)
  310. #define SD_0TO7BITS ((u32)0x000000FF)
  311. #define SD_8TO15BITS ((u32)0x0000FF00)
  312. #define SD_16TO23BITS ((u32)0x00FF0000)
  313. #define SD_24TO31BITS ((u32)0xFF000000)
  314. #define SD_MAX_DATA_LENGTH ((u32)0x01FFFFFF)
  315.  
  316. #define SD_HALFFIFO ((u32)0x00000008)
  317. #define SD_HALFFIFOBYTES ((u32)0x00000020)
  318.  
  319. //Command Class Supported
  320. #define SD_CCCC_LOCK_UNLOCK ((u32)0x00000080)
  321. #define SD_CCCC_WRITE_PROT ((u32)0x00000040)
  322. #define SD_CCCC_ERASE ((u32)0x00000020)
  323.  
  324. //CMD8指令
  325. #define SDIO_SEND_IF_COND ((u32)0x00000008)
  326. ////////////////////////////////////////////////////////////////////////////////////////////////////
  327. //相关函数定义
  328. SD_Error SD_Init(void);
  329. void SDIO_Clock_Set(u8 clkdiv);
  330.  
  331. SD_Error SD_PowerON(void);
  332. SD_Error SD_PowerOFF(void);
  333. SD_Error SD_InitializeCards(void);
  334. SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo);
  335. SD_Error SD_EnableWideBusOperation(u32 wmode);
  336. SD_Error SD_SetDeviceMode(u32 mode);
  337. SD_Error SD_SelectDeselect(u32 addr);
  338. SD_Error SD_SendStatus(uint32_t *pcardstatus);
  339. SDCardState SD_GetState(void);
  340. SD_Error SD_ReadBlock(u8 *buf,long long addr,u16 blksize);
  341. SD_Error SD_ReadMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks);
  342. SD_Error SD_WriteBlock(u8 *buf,long long addr, u16 blksize);
  343. SD_Error SD_WriteMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks);
  344. SD_Error SD_ProcessIRQSrc(void);
  345.  
  346. void SD_DMA_Config(u32*mbuf,u32 bufsize,u32 dir);
  347. //void SD_DMA_Config(u32*mbuf,u32 bufsize,u8 dir);
  348.  
  349. u8 SD_ReadDisk(u8*buf,u32 sector,u8 cnt); //读SD卡,fatfs/usb调用
  350. u8 SD_WriteDisk(u8*buf,u32 sector,u8 cnt); //写SD卡,fatfs/usb调用
  351.  
  352. #endif

  

  

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