stm32f769 寄存器配置SD卡---移植fatfs

stary666

昨天开始在上周实现的SD卡读写基础上移植fatfs文件系统，开始不是很顺利，之前没有搞过，完全按照f767的例程移植的，但是在加载SD卡时一直是失败的，很郁闷，折腾了一天，结果还不理想，睡了个好觉，思路清晰了，参考的同时，也要加入自己的思想，果然很顺利的按我的思路实现了，太开心了，说明一下，本次移植的是最新的版本ff13a。需要的自己下载

下面详细介绍
按照f767的例程，把ffconf.h里面的宏定义的赋值进行修改

1. #define FF_FS_READONLY        0
   
2. /* This op<font color="#4298ba">ti</font>on switches read-only configuration. (0:Read/Write or 1:Read-only)
   
3. /  Read-only configuration removes writing API functions, f_write(), f_sync(),
   
4. /  f_unlink(), f_mkdir(), f_chmod(), f_rename(), f_truncate(), f_getfree()
   
5. /  and optional writing functions as well. */
   
6. 
   
7. 
   
8. #define FF_FS_MINIMIZE        0
   
9. /* This option defines minimization level to remove some basic API functions.
   
10. /
    
11. /   0: Basic functions are fully enabled.
    
12. /   1: f_stat(), f_getfree(), f_unlink(), f_mkdir(), f_truncate() and f_rename()
    
13. /      are removed.
    
14. /   2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1.
    
15. /   3: f_lseek() function is removed in addition to 2. */
    
16. 
    
17. 
    
18. #define FF_USE_STRFUNC        1
    
19. /* This option switches string functions, f_gets(), f_putc(), f_puts() and f_printf().
    
20. /
    
21. /  0: Disable string functions.
    
22. /  1: Enable without LF-CRLF conversion.
    
23. /  2: Enable with LF-CRLF conversion. */
    
24. 
    
25. 
    
26. #define FF_USE_FIND                0
    
27. /* This option switches filtered directory read functions, f_findfirst() and
    
28. /  f_findnext(). (0:Disable, 1:Enable 2:Enable with matching altname[] too) */
    
29. 
    
30. 
    
31. #define FF_USE_MKFS                1
    
32. /* This option switches f_mkfs() function. (0:Disable or 1:Enable) */
    
33. 
    
34. 
    
35. #define FF_USE_FASTSEEK        1
    
36. /* This option switches fast seek function. (0:Disable or 1:Enable) */
    
37. 
    
38. 
    
39. #define FF_USE_EXPAND        0
    
40. /* This option switches f_expand function. (0:Disable or 1:Enable) */
    
41. 
    
42. 
    
43. #define FF_USE_CHMOD        0
    
44. /* This option switches attribute manipulation functions, f_chmod() and f_utime().
    
45. /  (0:Disable or 1:Enable) Also FF_FS_READONLY needs to be 0 to enable this option. */
    
46. 
    
47. 
    
48. #define FF_USE_LABEL        1
    
49. /* This option switches volume label functions, f_getlabel() and f_setlabel().
    
50. /  (0:Disable or 1:Enable) */
    
51. 
    
52. 
    
53. #define FF_USE_FORWARD        0
    
54. /* This option switches f_forward() function. (0:Disable or 1:Enable) */
    
55. 
    
56. 
    
57. /*---------------------------------------------------------------------------/
    
58. / Locale and Namespace Configurations
    
59. /---------------------------------------------------------------------------*/
    
60. 
    
61. #define FF_CODE_PAGE        936
    
62. /* This option specifies the OEM code page to be used on the target system.
    
63. /  Incorrect code page setting can cause a file open failure.
    
64. /
    
65. /   437 - U.S.
    
66. /   720 - Arabic
    
67. /   737 - Greek
    
68. /   771 - KBL
    
69. /   775 - Baltic
    
70. /   850 - Latin 1
    
71. /   852 - Latin 2
    
72. /   855 - Cyrillic
    
73. /   857 - Turkish
    
74. /   860 - Portuguese
    
75. /   861 - Icelandic
    
76. /   862 - Hebrew
    
77. /   863 - Canadian French
    
78. /   864 - Arabic
    
79. /   865 - Nordic
    
80. /   866 - Russian
    
81. /   869 - Greek 2
    
82. /   932 - Japanese (DBCS)
    
83. /   936 - Simplified Chinese (DBCS)
    
84. /   949 - Korean (DBCS)
    
85. /   950 - Traditional Chinese (DBCS)
    
86. /     0 - Include all code pages above and configured by f_setcp()
    
87. */
    
88. 
    
89. 
    
90. #define FF_USE_LFN                3
    
91. #define FF_MAX_LFN                255
    
92. /* The FF_USE_LFN switches the support for LFN (long file name).
    
93. /
    
94. /   0: Disable LFN. FF_MAX_LFN has no effect.
    
95. /   1: Enable LFN with static working buffer on the BSS. Always NOT thread-safe.
    
96. /   2: Enable LFN with dynamic working buffer on the STACK.
    
97. /   3: Enable LFN with dynamic working buffer on the HEAP.
    
98. /
    
99. /  To enable the LFN, ffunicode.c needs to be added to the project. The LFN function
    
100. /  requiers certain internal working buffer occupies (FF_MAX_LFN + 1) * 2 bytes and
     
101. /  additional (FF_MAX_LFN + 44) / 15 * 32 bytes when exFAT is enabled.
     
102. /  The FF_MAX_LFN defines size of the working buffer in UTF-16 code unit and it can
     
103. /  be in range of 12 to 255. It is recommended to be set 255 to fully support LFN
     
104. /  specification.
     
105. /  When use stack for the working buffer, take care on stack overflow. When use heap
     
106. /  memory for the working buffer, memory management functions, ff_memalloc() and
     
107. /  ff_memfree() in ffsystem.c, need to be added to the project. */
     
108. 
     
109. 
     
110. #define FF_LFN_UNICODE        0
     
111. /* This option switches the character encoding on the API when LFN is enabled.
     
112. /
     
113. /   0: ANSI/OEM in current CP (TCHAR = char)
     
114. /   1: Unicode in UTF-16 (TCHAR = WCHAR)
     
115. /   2: Unicode in UTF-8 (TCHAR = char)
     
116. /
     
117. /  Also behavior of string I/O functions will be affected by this option.
     
118. /  When LFN is not enabled, this option has no effect. */
     
119. 
     
120. 
     
121. #define FF_LFN_BUF                255
     
122. #define FF_SFN_BUF                12
     
123. /* This set of options defines size of file name members in the FILINFO structure
     
124. /  which is used to read out directory items. These values should be suffcient for
     
125. /  the file names to read. The maximum possible length of the read file name depends
     
126. /  on character encoding. When LFN is not enabled, these options have no effect. */
     
127. 
     
128. 
     
129. #define FF_STRF_ENCODE        3
     
130. /* When FF_LFN_UNICODE >= 1 with LFN enabled, string I/O functions, f_gets(),
     
131. /  f_putc(), f_puts and f_printf() convert the character encoding in it.
     
132. /  This option selects assumption of character encoding ON THE FILE to be
     
133. /  read/written via those functions.
     
134. /
     
135. /   0: ANSI/OEM in current CP
     
136. /   1: Unicode in UTF-16LE
     
137. /   2: Unicode in UTF-16BE
     
138. /   3: Unicode in UTF-8
     
139. */
     
140. 
     
141. 
     
142. #define FF_FS_RPATH                0
     
143. /* This option configures support for relative path.
     
144. /
     
145. /   0: Disable relative path and remove related functions.
     
146. /   1: Enable relative path. f_chdir() and f_chdrive() are available.
     
147. /   2: f_getcwd() function is available in addition to 1.
     
148. */
     
149. 
     
150. 
     
151. /*---------------------------------------------------------------------------/
     
152. / Drive/Volume Configurations
     
153. /---------------------------------------------------------------------------*/
     
154. 
     
155. #define FF_VOLUMES                1
     
156. /* Number of volumes (logical drives) to be used. (1-10) */
     
157. 
     
158. 
     
159. #define FF_STR_VOLUME_ID        0
     
160. #define FF_VOLUME_STRS                "RAM","NAND","CF","SD","SD2","USB","USB2","USB3"
     
161. /* FF_STR_VOLUME_ID switches string support for volume ID.
     
162. /  When FF_STR_VOLUME_ID is set to 1, also pre-defined strings can be used as drive
     
163. /  number in the path name. FF_VOLUME_STRS defines the drive ID strings for each
     
164. /  logical drives. Number of items must be equal to FF_VOLUMES. Valid characters for
     
165. /  the drive ID strings are: A-Z and 0-9. */
     
166. 
     
167. 
     
168. #define FF_MULTI_PARTITION        0
     
169. /* This option switches support for multiple volumes on the physical drive.
     
170. /  By default (0), each logical drive number is bound to the same physical drive
     
171. /  number and only an FAT volume found on the physical drive will be mounted.
     
172. /  When this function is enabled (1), each logical drive number can be bound to
     
173. /  arbitrary physical drive and partition listed in the VolToPart[]. Also f_fdisk()
     
174. /  funciton will be available. */
     
175. 
     
176. 
     
177. #define FF_MIN_SS                512
     
178. #define FF_MAX_SS                512
     
179. /* This set of options configures the range of sector size to be supported. (512,
     
180. /  1024, 2048 or 4096) Always set both 512 for most systems, generic memory card and
     
181. /  harddisk. But a larger value may be required for on-board flash memory and some
     
182. /  type of optical media. When FF_MAX_SS is larger than FF_MIN_SS, FatFs is configured
     
183. /  for variable sector size mode and disk_ioctl() function needs to implement
     
184. /  GET_SECTOR_SIZE command. */
     
185. 
     
186. 
     
187. #define FF_USE_TRIM                0
     
188. /* This option switches support for ATA-TRIM. (0:Disable or 1:Enable)
     
189. /  To enable Trim function, also CTRL_TRIM command should be implemented to the
     
190. /  disk_ioctl() function. */
     
191. 
     
192. 
     
193. #define FF_FS_NOFSINFO        0
     
194. /* If you need to know correct free space on the FAT32 volume, set bit 0 of this
     
195. /  option, and f_getfree() function at first time after volume mount will force
     
196. /  a full FAT scan. Bit 1 controls the use of last allocated cluster number.
     
197. /
     
198. /  bit0=0: Use free cluster count in the FSINFO if available.
     
199. /  bit0=1: Do not trust free cluster count in the FSINFO.
     
200. /  bit1=0: Use last allocated cluster number in the FSINFO if available.
     
201. /  bit1=1: Do not trust last allocated cluster number in the FSINFO.
     
202. */
     
203. 
     
204. 
     
205. 
     
206. /*---------------------------------------------------------------------------/
     
207. / System Configurations
     
208. /---------------------------------------------------------------------------*/
     
209. 
     
210. #define FF_FS_TINY                0
     
211. /* This option switches tiny buffer configuration. (0:Normal or 1:Tiny)
     
212. /  At the tiny configuration, size of file object (FIL) is shrinked FF_MAX_SS bytes.
     
213. /  Instead of private sector buffer eliminated from the file object, common sector
     
214. /  buffer in the filesystem object (FATFS) is used for the file data transfer. */
     
215. 
     
216. 
     
217. #define FF_FS_EXFAT                1
     
218. /* This option switches support for exFAT filesystem. (0:Disable or 1:Enable)
     
219. /  When enable exFAT, also LFN needs to be enabled.
     
220. /  Note that enabling exFAT discards ANSI C (C89) compatibility. */
     
221. 
     
222. 
     
223. #define FF_FS_NORTC                0
     
224. #define FF_NORTC_MON        1
     
225. #define FF_NORTC_MDAY        1
     
226. #define FF_NORTC_YEAR        2018
     
227. /* The option FF_FS_NORTC switches timestamp functiton. If the system does not have
     
228. /  any RTC function or valid timestamp is not needed, set FF_FS_NORTC = 1 to disable
     
229. /  the timestamp function. All objects modified by FatFs will have a fixed timestamp
     
230. /  defined by FF_NORTC_MON, FF_NORTC_MDAY and FF_NORTC_YEAR in local time.
     
231. /  To enable timestamp function (FF_FS_NORTC = 0), get_fattime() function need to be
     
232. /  added to the project to read current time form real-time clock. FF_NORTC_MON,
     
233. /  FF_NORTC_MDAY and FF_NORTC_YEAR have no effect.
     
234. /  These options have no effect at read-only configuration (FF_FS_READONLY = 1). */
     
235. 
     
236. 
     
237. #define FF_FS_LOCK                0
     
238. /* The option FF_FS_LOCK switches file lock function to control duplicated file open
     
239. /  and illegal operation to open objects. This option must be 0 when FF_FS_READONLY
     
240. /  is 1.
     
241. /
     
242. /  0:  Disable file lock function. To avoid volume corruption, application program
     
243. /      should avoid illegal open, remove and rename to the open objects.
     
244. /  >0: Enable file lock function. The value defines how many files/sub-directories
     
245. /      can be opened simultaneously under file lock control. Note that the file
     
246. /      lock control is independent of re-entrancy. */
     
247. 
     
248. 
     
249. #define FF_FS_REENTRANT        0
     
250. #define FF_FS_TIMEOUT        1000
     
251. #define FF_SYNC_t                HANDLE

复制代码

编译下载后果然是打印的sd卡加载成功




                                                           发稿与2018年3月13日