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7 ^, j. U4 A' S1 V1 ?
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下面详细介绍. n! l8 b% U/ P: O
按照f767的例程，把ffconf.h里面的宏定义的赋值进行修改0 m3 @8 w; B( q% x3 i
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#define FF_FS_READONLY 0
: s; \, @+ Q! Q0 u/ r2 R/* This option switches read-only configuration. (0:Read/Write or 1:Read-only)' N! {! T/ s- X
/ Read-only configuration removes writing API functions, f_write(), f_sync(),
: O0 h# l" ?& _& G/ f_unlink(), f_mkdir(), f_chmod(), f_rename(), f_truncate(), f_getfree() i: D2 R9 h q8 L1 W
/ and optional writing functions as well. *// i, L- ?5 ^& g" |% s+ \6 y
& Q. |6 v+ a" D8 \" z) O+ k9 C5 d( C1 M# P+ E8 V3 X# K
#define FF_FS_MINIMIZE 0
# o! e* z+ x2 l- U f+ a6 @/* This option defines minimization level to remove some basic API functions.
3 ^5 A7 z+ a# C5 _; ?0 K/( |7 Q: v! S, K' N6 _. c
/ 0: Basic functions are fully enabled.
1 [: j- R' x4 j _6 ~% U0 {2 w/ 1: f_stat(), f_getfree(), f_unlink(), f_mkdir(), f_truncate() and f_rename()
2 A: p. {! R5 n: e6 L: m8 N/ are removed.1 C' e; A2 D3 m& u, C/ A# T" V
/ 2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1./ k; h! ~8 o) D7 l
/ 3: f_lseek() function is removed in addition to 2. */7 j2 L* u3 n4 V9 r
% x$ L/ }0 R k: u4 `+ D5 C
4 A) _ S; ]6 q0 J; S9 _6 h: o0 C5 e#define FF_USE_STRFUNC 12 v$ n7 z1 b, E5 Y; K
/* This option switches string functions, f_gets(), f_putc(), f_puts() and f_printf().8 w" b8 l; x4 K; p1 l; W6 Y
/0 L& p: _3 Y2 c0 }4 R: a7 x
/ 0: Disable string functions.
! u5 r, `# i% a1 F, G' s2 _/ 1: Enable without LF-CRLF conversion.. N9 y" R& i& u' s% F9 w
/ 2: Enable with LF-CRLF conversion. */
+ o. _/ i9 I; a. R }
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#define FF_USE_FIND 0$ J3 i2 }( [, _+ G0 D: v
/* This option switches filtered directory read functions, f_findfirst() and4 C! J% x+ v- _; ~) Q. U
/ f_findnext(). (0 isable, 1:Enable 2:Enable with matching altname[] too) */! ^, Q% t9 z9 F" s) U$ D
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#define FF_USE_MKFS 1
, y# Y+ x2 E- A; E/* This option switches f_mkfs() function. (0isable or 1:Enable) */
# |! s& v) l1 q% ?# I2 `( X' c7 T2 T
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: G" H% o* h7 ^. a T! O5 Z* O# s#define FF_USE_FASTSEEK 10 ~0 N: H$ }( Y- P% m# n
/* This option switches fast seek function. (0isable or 1:Enable) */" s8 C, W4 A& C. z
% U, S# k7 T g% U; R
8 m% v1 ?! H. m' }$ t3 [#define FF_USE_EXPAND 0: B/ | t2 _2 J- x$ v
/* This option switches f_expand function. (0isable or 1:Enable) */" s+ k5 j$ O. j! c" q
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0 f+ a' d/ V* U) Y/ e: D4 Q#define FF_USE_CHMOD 0
/ }2 r. }% N% S7 G T/* This option switches attribute manipulation functions, f_chmod() and f_utime().
. j) ]* l! N/ a' l: U0 j/ (0isable or 1:Enable) Also FF_FS_READONLY needs to be 0 to enable this option. */
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( @0 M2 g8 C1 k9 P7 N4 H% e#define FF_USE_LABEL 1/ `- ~! I" | X; x
/* This option switches volume label functions, f_getlabel() and f_setlabel().
. [/ Q! E/ f2 R1 N# O/ (0isable or 1:Enable) */
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' c7 Q0 \2 t u& K( Y( e4 \#define FF_USE_FORWARD 05 m" k' q) q4 _3 r4 j( X- b: p
/* This option switches f_forward() function. (0isable or 1:Enable) */9 ^/ A5 d0 {3 H7 W% m5 A( a
' ]7 e/ o/ b5 x R' R5 f% m2 M- ~3 I3 H
$ g" {* T! T; W7 Y/ [9 \/*---------------------------------------------------------------------------/
, i& d0 I1 w5 m- ~ o/ Locale and Namespace Configurations
* N6 q" [) |% J3 ? h/---------------------------------------------------------------------------*/) c% K( z: k9 o% [9 R
* [. K! c u( ?# o#define FF_CODE_PAGE 936- O) F" W4 o' O, O5 G; s
/* This option specifies the OEM code page to be used on the target system.
: c+ T- l5 G- s+ g2 y( V/ Incorrect code page setting can cause a file open failure.( z/ j5 n; ?0 K( y* M
/
$ \, b0 |1 q7 j4 M/ 437 - U.S.( h/ @9 r! \& t8 _
/ 720 - Arabic
& |4 ^5 h( n' G6 Z/ 737 - Greek* c/ |+ o+ I' S& B6 u
/ 771 - KBL8 r- |+ I; N1 i. q' o k
/ 775 - Baltic: W( b( V* K" F D2 a
/ 850 - Latin 1" _8 F& L8 D+ J3 J; ?
/ 852 - Latin 2) c# F+ T: }+ X6 f( o
/ 855 - Cyrillic! d# m: P q, V2 D
/ 857 - Turkish
# ~1 m8 F& H5 T! U" O' D/ 860 - Portuguese
4 E$ u5 ~7 a* t- V/ 861 - Icelandic
" u, Y( u' A6 r; M& v/ 862 - Hebrew$ a3 m6 Y. p# R( D) P7 i
/ 863 - Canadian French
4 x6 H) I1 C+ M: |: M5 D& K/ 864 - Arabic% f' x8 q: j2 t8 h# G7 a
/ 865 - Nordic2 g$ y4 Q; N. T6 R
/ 866 - Russian
' _0 Q- W- T& W: g6 _1 v/ F5 Q/ 869 - Greek 2
/ Q D/ \8 \, i+ T& t1 K# `' x/ 932 - Japanese (DBCS)& I `6 q: f+ m ~
/ 936 - Simplified Chinese (DBCS)4 Q3 B! B, T6 C: M4 g
/ 949 - Korean (DBCS)2 l5 X# l, b! q# a& f) T
/ 950 - Traditional Chinese (DBCS)8 f0 s/ W5 F! a; i
/ 0 - Include all code pages above and configured by f_setcp()' l8 K K p3 A6 `. Z3 ]7 q
*/
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# a& f5 y" a c) A5 n+ p) H4 O, q) X1 X3 {( g( P3 `4 q
#define FF_USE_LFN 3. b% |* l- T; w
#define FF_MAX_LFN 2559 ]% A6 S2 c) Y& s1 k
/* The FF_USE_LFN switches the support for LFN (long file name).
- ~* h! G/ |0 I- j* P. }" C. N/0 i0 l8 o6 X9 n2 R- c0 `
/ 0: Disable LFN. FF_MAX_LFN has no effect.
- k' O- o; r& V' S/ 1: Enable LFN with static working buffer on the BSS. Always NOT thread-safe.
+ l1 y5 E3 o0 Y/ 2: Enable LFN with dynamic working buffer on the STACK.
z O) l! V3 q7 @2 j$ f/ 3: Enable LFN with dynamic working buffer on the HEAP.
: T: m% M- s% v+ e1 y/
5 M: W" c8 c6 t, T% C' P" `/ To enable the LFN, ffunicode.c needs to be added to the project. The LFN function
; W) y s: `5 S/ requiers certain internal working buffer occupies (FF_MAX_LFN + 1) * 2 bytes and; H! y4 Y& o( F, `
/ additional (FF_MAX_LFN + 44) / 15 * 32 bytes when exFAT is enabled.2 h6 d, ]- g4 S: Z6 d
/ The FF_MAX_LFN defines size of the working buffer in UTF-16 code unit and it can2 l, _, H* d/ R$ S$ Y
/ be in range of 12 to 255. It is recommended to be set 255 to fully support LFN
6 @, W* w( s. a0 E9 t- s/ specification.! A$ M: r$ ^3 b7 g8 G) K
/ When use stack for the working buffer, take care on stack overflow. When use heap: ^4 K8 v, n, X; g1 z1 @1 t. a
/ memory for the working buffer, memory management functions, ff_memalloc() and* |- n7 Z3 e4 F6 X2 q
/ ff_memfree() in ffsystem.c, need to be added to the project. */
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K5 _, c+ D# N% |' J6 z$ F% `#define FF_LFN_UNICODE 0$ f$ ~* g& s" O, A2 C
/* This option switches the character encoding on the API when LFN is enabled.
" t4 u' A) ?) O7 d- B% T2 e/
, N8 E" x, t$ t/ 0: ANSI/OEM in current CP (TCHAR = char)
P( d! n9 J2 l N2 u/ C/ 1: Unicode in UTF-16 (TCHAR = WCHAR)! N, n1 c( Z' D$ u$ h4 p
/ 2: Unicode in UTF-8 (TCHAR = char)
9 f+ ~$ O) U- o4 o/ C. {. _/5 H/ ^7 a2 o6 \4 E
/ Also behavior of string I/O functions will be affected by this option.
. g( n- a P% r/ When LFN is not enabled, this option has no effect. */" F1 j+ n" Q6 d5 Y& }) @
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2 a9 }. n% C4 f1 J! ?7 ?0 m; c
#define FF_LFN_BUF 255
3 _# e% a2 L$ |2 f#define FF_SFN_BUF 12
7 ?- t$ S; _4 i2 h/* This set of options defines size of file name members in the FILINFO structure. `0 j( A5 X. n$ `4 p- ]$ T7 Q( i
/ which is used to read out directory items. These values should be suffcient for
- t/ Q5 n/ |) ]7 Z* K( }/ the file names to read. The maximum possible length of the read file name depends
( b# Y* M4 G' ]$ \/ j/ on character encoding. When LFN is not enabled, these options have no effect. */
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! a/ I% y' a; I4 l: e- P% l#define FF_STRF_ENCODE 3- P' j0 u% s1 k0 T- u; d1 a
/* When FF_LFN_UNICODE >= 1 with LFN enabled, string I/O functions, f_gets(),
: }: |& V/ [- B# ~7 q/ f_putc(), f_puts and f_printf() convert the character encoding in it.! b K5 }' D. j7 W/ ~, M8 Y1 g
/ This option selects assumption of character encoding ON THE FILE to be6 |, B1 Q& p# t w# b* F
/ read/written via those functions.
6 R: l, q- d% K$ s' {' u: p# G/& B2 a% ^( b. O
/ 0: ANSI/OEM in current CP
- E( _* w5 k N/ 1: Unicode in UTF-16LE
9 h, A/ W" z1 T+ X+ T/ 2: Unicode in UTF-16BE
( B4 l" x" A( x1 |/ 3: Unicode in UTF-8
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$ M# `( R2 M, d7 }/ @- {#define FF_FS_RPATH 0
5 `4 I# c9 K; ?, J4 B) U/* This option configures support for relative path.
/ }8 [0 j+ Y! F( L/
' Z$ C* N4 Y, _3 @/ 0: Disable relative path and remove related functions.
7 H% `0 G9 v3 s e/ 1: Enable relative path. f_chdir() and f_chdrive() are available.
( _7 `! M8 \7 L% o" {: X/ 2: f_getcwd() function is available in addition to 1.# o* c \ E/ Y5 ~4 G0 [
*/
# v9 B2 W; `- q4 v0 b3 B, Q! b* D# l e% t* w
4 f5 U) o' J4 u+ O, ^/*---------------------------------------------------------------------------/! ]9 L3 `1 d" l* }
/ Drive/Volume Configurations8 b- f/ h1 N& p+ u/ D" C
/---------------------------------------------------------------------------*/; Q& n, U5 _: z
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#define FF_VOLUMES 1& Z( K# L$ S" n$ {8 n2 Q/ r
/* Number of volumes (logical drives) to be used. (1-10) */
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9 T: j$ W- P/ `: y1 Z( V4 y& a4 A4 z#define FF_STR_VOLUME_ID 05 q" E. V' f' [% f* ^# q% a5 ~) N2 D
#define FF_VOLUME_STRS "RAM","NAND","CF","SD","SD2","USB","USB2","USB3"1 f8 M9 |* n$ W& ]0 }% f) K! s
/* FF_STR_VOLUME_ID switches string support for volume ID.
1 M. |( k/ S; h; {6 j/ When FF_STR_VOLUME_ID is set to 1, also pre-defined strings can be used as drive
" i; O" E% e$ G" j; R4 G! f) a# o/ number in the path name. FF_VOLUME_STRS defines the drive ID strings for each, e5 q0 H! n( h: W1 Z) G' C0 ]/ A( _
/ logical drives. Number of items must be equal to FF_VOLUMES. Valid characters for t+ [0 O' r3 E9 t) M' h- v* p
/ the drive ID strings are: A-Z and 0-9. */
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9 q3 z4 [- N6 S/ v#define FF_MULTI_PARTITION 0
" H3 `7 @! V4 k4 h: N: R5 A/* This option switches support for multiple volumes on the physical drive.) I9 G5 |$ d4 s6 A& A
/ By default (0), each logical drive number is bound to the same physical drive
/ l+ n: d) h4 H. Q+ }( Y/ number and only an FAT volume found on the physical drive will be mounted.
; n5 X8 { z9 X2 o/ When this function is enabled (1), each logical drive number can be bound to: N$ c/ A3 Q- L* Y4 |" r3 }) Y
/ arbitrary physical drive and partition listed in the VolToPart[]. Also f_fdisk()
8 G; I" B G/ f# H6 l- p/ funciton will be available. */) R. f' u6 M+ O: c6 E- G
6 ~/ ?9 n9 P7 d) S% G7 j2 O0 g7 X
( @0 I7 `' a3 `0 I! S#define FF_MIN_SS 512
0 K& l0 R) g5 P* l& `& R#define FF_MAX_SS 512
4 [2 G9 |) D5 G2 I } h( p7 \) G/ v/* This set of options configures the range of sector size to be supported. (512,0 b) D: ~: y% H1 D3 u
/ 1024, 2048 or 4096) Always set both 512 for most systems, generic memory card and
. S' X: y6 U; f/ harddisk. But a larger value may be required for on-board flash memory and some! e( S/ `- s3 P
/ type of optical media. When FF_MAX_SS is larger than FF_MIN_SS, FatFs is configured
8 t9 B( c9 |6 t+ W' p" H/ for variable sector size mode and disk_ioctl() function needs to implement
: {: g# [& p0 J" N( u3 D5 i# d( n) e/ GET_SECTOR_SIZE command. */
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# o. U% w$ ?3 m1 G5 i
#define FF_USE_TRIM 04 ~% j1 I* T7 {' ^9 L
/* This option switches support for ATA-TRIM. (0isable or 1:Enable)
# g5 s" @3 O A! j+ I! ]/ D# E/ To enable Trim function, also CTRL_TRIM command should be implemented to the
. Q1 s D$ d7 f3 g/ disk_ioctl() function. */! F. E3 U2 |" }, L, y/ u1 p
! H) ]' N" z/ H4 i
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#define FF_FS_NOFSINFO 0
% I8 M Z2 J0 \! ~4 q/ |; A/* If you need to know correct free space on the FAT32 volume, set bit 0 of this' G6 J2 c6 b+ R" {7 |7 W- [2 Z
/ option, and f_getfree() function at first time after volume mount will force
( {7 q5 d" d: Z/ a full FAT scan. Bit 1 controls the use of last allocated cluster number./ Z+ A# i1 N. d1 u
/, d9 n/ Q* b! o6 ?& Z
/ bit0=0: Use free cluster count in the FSINFO if available.
% X3 c i q5 ]* h$ }) k/ bit0=1: Do not trust free cluster count in the FSINFO.
- V' q6 F: F! s* g5 o' |' e# b- X/ bit1=0: Use last allocated cluster number in the FSINFO if available.
1 D- j% i) y) u$ s$ @& h5 G) o, G/ bit1=1: Do not trust last allocated cluster number in the FSINFO.
" i( n0 l8 K8 p( ~, [; `2 U*/
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1 j+ W4 a1 |4 m8 ] ` U( ~/ |9 w; i$ y' Z% G+ h* a) w9 ]! X* u
% ?. @2 ^# q2 e {/*---------------------------------------------------------------------------/
2 C! f7 p) e0 J/ System Configurations
! N, t3 [7 f5 [. H/---------------------------------------------------------------------------*/* A6 K; u9 p9 N' y% n& k
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#define FF_FS_TINY 0( P$ V* y( E1 ^& ]
/* This option switches tiny buffer configuration. (0:Normal or 1:Tiny)
3 R3 |5 v% a7 B% d1 r8 i/ At the tiny configuration, size of file object (FIL) is shrinked FF_MAX_SS bytes.
" B+ M7 y" I. v- s8 B, J/ Instead of private sector buffer eliminated from the file object, common sector9 C' P. }( u1 ] m8 x: C
/ buffer in the filesystem object (FATFS) is used for the file data transfer. */
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- S, M$ R% h7 i#define FF_FS_EXFAT 1
, p) G' K& Y v* _( C: w7 C( N/* This option switches support for exFAT filesystem. (0isable or 1:Enable)% X3 ^0 C" M% _/ o
/ When enable exFAT, also LFN needs to be enabled.! E; X j( \+ x( [' k. o
/ Note that enabling exFAT discards ANSI C (C89) compatibility. */8 I" p2 ?! u- Z c) ~9 t$ a. S
3 N1 \, s0 `7 N5 q3 |% S5 ~4 Q5 L& U
#define FF_FS_NORTC 00 |9 [5 _( H+ z+ m. \. G
#define FF_NORTC_MON 1; U* X, g# B4 C+ y1 n& y0 D, `* k
#define FF_NORTC_MDAY 1' f0 S# x' U- }# i
#define FF_NORTC_YEAR 20182 V4 @$ J: I' W! V
/* The option FF_FS_NORTC switches timestamp functiton. If the system does not have7 @1 J; x. n _3 a* p% C
/ any RTC function or valid timestamp is not needed, set FF_FS_NORTC = 1 to disable i" G A! Z% j; X. }7 _2 ^
/ the timestamp function. All objects modified by FatFs will have a fixed timestamp- K; J, b* J/ D; B* i$ V7 S
/ defined by FF_NORTC_MON, FF_NORTC_MDAY and FF_NORTC_YEAR in local time.0 L$ g3 D8 Y- v1 c' a
/ To enable timestamp function (FF_FS_NORTC = 0), get_fattime() function need to be1 K# f$ T6 l+ V6 ?
/ added to the project to read current time form real-time clock. FF_NORTC_MON,
/ ]$ H$ E) P' @3 @3 I/ O" _/ FF_NORTC_MDAY and FF_NORTC_YEAR have no effect.
( q2 }. O5 o9 n" N5 j" n" ?/ These options have no effect at read-only configuration (FF_FS_READONLY = 1). */9 |7 z$ L6 v3 `9 ~
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$ ?( }) @( Y9 q# |4 W#define FF_FS_LOCK 05 j& g* N8 c* }1 |* x5 R$ k7 K
/* The option FF_FS_LOCK switches file lock function to control duplicated file open
( F% k' o$ c; U0 _' h/ and illegal operation to open objects. This option must be 0 when FF_FS_READONLY
# H, Q7 O" u; }1 \$ |/ is 1.
+ m2 ]( Q* G# @. C& C/
; o, D* ^% L u, J% T9 P/ 0: Disable file lock function. To avoid volume corruption, application program
' X2 O& C' ?% {/ y/ should avoid illegal open, remove and rename to the open objects.9 i: N; J: m! D
/ >0: Enable file lock function. The value defines how many files/sub-directories
7 c* _! Z! }0 l0 n8 L' o( Q' D/ can be opened simultaneously under file lock control. Note that the file
' g/ V4 v. u: x5 i) p9 c5 w: N/ lock control is independent of re-entrancy. */
" W4 R( c! T% V: {2 u! B' i0 f4 ?) g( @; J) F( [& }1 E" ~8 ]- u. K0 u: y' z
' l6 e! f0 F) b" R7 A
#define FF_FS_REENTRANT 01 M( o2 [! L) R% B: V' n6 W
#define FF_FS_TIMEOUT 1000
2 m1 k' p1 F+ a. ~9 r/ _( O#define FF_SYNC_t HANDLE
$ b0 A% }/ p' @5 z- L1 r然后开始修改diskio.c文件
( v; H9 k" K5 X, I) }+ B/* Definitions of physical drive number for each drive *// j/ i2 a- V2 @) I( K2 r! s
#define SD_CARD 0 /* Example: Map Ramdisk to physical drive 0 */ d& G$ G% [9 O
#define DEV_MMC 1 /* Example: Map MMC/SD card to physical drive 1 */1 E5 E+ O& d+ | w: e$ x3 h
#define DEV_USB 2 /* Example: Map USB MSD to physical drive 2 */
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, K8 d9 u; E9 U: N" N7 h* b
/*-----------------------------------------------------------------------*/
& ]/ {2 Z2 S& b' z2 p3 M: _/* Get Drive Status */
: T5 T5 K' F- m! R4 u. a/*-----------------------------------------------------------------------*/0 n9 M, B$ |2 M
" X3 o7 _1 B9 A8 ^$ i$ M2 G ~DSTATUS disk_status (
* ?$ ^1 o' {, n4 S: y/ n0 f3 c BYTE pdrv /* Physical drive nmuber to identify the drive */6 d! e7 a) B; M# F) ^5 [+ l5 }
)9 ~* Q7 n* U p# z- X! c
{
6 U& i9 R1 a7 U |2 n3 f$ i return 0;
4 d- P2 d" v5 x. O6 \, S}
& `4 q- `1 i7 t: q6 `+ \8 Z: y: s) A5 `" f! i, b- f: J
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/*-----------------------------------------------------------------------*/1 e9 _: ]8 g9 T4 w( O$ R4 h
/* Inidialize a Drive */, p8 ~% z2 ]4 [5 ?. t! e1 b
/*-----------------------------------------------------------------------*/
. M \# z6 F. ~# e( c# {
$ n2 a1 S6 X+ d, sDSTATUS disk_initialize ($ m+ A; g# f) W/ g/ {
BYTE pdrv /* Physical drive nmuber to identify the drive */
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{% e# N. s c9 _/ C- ^; Z
DSTATUS stat;
8 s0 M- G: ?+ f/ Q* r F3 q F) R ~
1 D$ s5 o) E: G0 C* a, U switch (pdrv) {) @( @8 n P- ~. _$ j) K9 k5 B
case SD_CARD :
9 N1 H8 C4 ?1 \ stat = sdcard_init();& ?5 d* W) ~: S. ^4 s) ^
: A# y/ a4 c' ~( p' p$ H" V6 F
// translate the reslut code here: w- b& x6 p e" J( o2 Q+ @
1 H" k( x! g h, [+ w9 V
break;# y N5 w% T$ j' J! b$ f9 O
3 |: s3 g' M1 l4 T8 w }
' b+ h; ]! ^% | return stat;2 Z- E; R+ |7 M- Y
}+ g6 r/ F+ l* @+ Z
5 {3 ?- y# W& B0 C! S
& l' a0 S+ \! ~8 }
: s* R9 z8 _/ v- `0 Q! }+ Z/*-----------------------------------------------------------------------*/( ~% v; {. f# C1 m w
/* Read Sector(s) *// G* X# [* r5 N% h' ^
/*-----------------------------------------------------------------------*/
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: I3 z0 W. w# D0 n8 SDRESULT disk_read (4 L5 }7 x; ~5 _3 h4 M+ c
BYTE pdrv, /* Physical drive nmuber to identify the drive */" m8 N0 k+ ~' `+ N' o
BYTE *buff, /* Data buffer to store read data */8 ~ c! s; q# K4 B* F
DWORD sector, /* Start sector in LBA */
) c+ F7 I: ?8 r8 W, C" x UINT count /* Number of sectors to read */4 ^( k/ I/ u& z9 i, W0 f6 M
)
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DRESULT res;* j! U5 @4 y8 q$ j
: @! \, I5 J3 {/ e, }2 ?" ]) a switch (pdrv) {% X. g, j" N; |7 y, S T
case SD_CARD :
) M8 ~3 |9 Q3 j // translate the arguments here
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res = SD_ReadDisk(buff, sector, count);
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. q7 G2 L$ p( \1 G // translate the reslut code here; w9 [8 ]0 ~1 I7 x
. K* U" {9 Z/ C$ d5 |( d" g* ]2 R break;
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return res;4 [- S% ~- {' w, ?) P: u
}
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/*-----------------------------------------------------------------------*/
3 I* o* O* L5 Q4 D8 r/* Write Sector(s) */
. e2 Q ~6 z5 }% X6 Q6 y/*-----------------------------------------------------------------------*/
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, ^5 x$ B! g1 J) T0 L+ B0 dDRESULT disk_write (. M* i: ^/ w) M* z% n
BYTE pdrv, /* Physical drive nmuber to identify the drive */3 n$ ^9 T: Y3 K/ \9 z
const BYTE *buff, /* Data to be written */9 Z! h: ^6 X4 _4 J4 a
DWORD sector, /* Start sector in LBA */5 H) [, [' G: y3 Z7 ]4 y
UINT count /* Number of sectors to write */
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DRESULT res;
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, F9 I% ]! u9 }3 ?7 j/ x switch (pdrv) {
' R, [, F6 U* @+ c& E case SD_CARD :
. u/ |" q% i" d' @- B! A // translate the arguments here* j" V' \% S1 I! k. v
- H0 D6 y8 q- ]" y res = SD_WriteDisk((u8 *)buff, sector, count);
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// translate the reslut code here
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+ J* a) {2 N* b& J5 x break;
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}
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, }5 n/ P* i* J G8 _; m8 j return res;
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6 s( J1 M' R* D; T/*-----------------------------------------------------------------------*// }& C, \# C/ Y1 k9 C) }
/* Miscellaneous Functions */
$ d' g% S8 Z) L0 r8 T/*-----------------------------------------------------------------------*/( M3 t1 f) e- X4 z% I/ U
i" U @$ b" ^ s, ?3 t* H/ ?% W5 ?DRESULT disk_ioctl (
* y1 {( n1 N) K BYTE pdrv, /* Physical drive nmuber (0..) */- }7 P. t* T$ W. m' J6 r
BYTE cmd, /* Control code */
& h3 L% M2 `; W( U9 N) V void *buff /* Buffer to send/receive control data */
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{
3 _: a6 w/ A/ i DRESULT res;
) T; [$ j+ y: p int result;/ b% n6 B( |( u0 R
' H8 s' \$ \! ?# y8 O2 e switch (pdrv) {
& t N% W, K# q3 a( I* }! J5 k case SD_CARD :
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* F9 A- ^, R) O) N: P( \ // Process of the command for the RAM drive0 G7 @6 D' w1 O3 _" p' ?$ x+ z6 r; U& D
& w: T) x: r' R- ^ return res;
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case DEV_MMC :( s. p3 T8 y( \4 B; a4 z7 R
- F8 S. \6 d9 Y$ Z: X& r // Process of the command for the MMC/SD card: d5 | [' N) {( [/ w
+ M9 j, o2 M9 ~$ u. R( Z return res;
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' U/ ~- e: ]4 b: r" r case DEV_USB :) W0 @( [& K- x( B& ^ L
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// Process of the command the USB drive+ q' `- H* q( \+ j7 G# L
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return res;
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return RES_PARERR;% L1 ^) w1 k/ g( Y: n( M! f: W4 u
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//获得时间9 o$ ]" l# O6 Z+ K% ^
//User defined function to give a current time to fatfs module */
5 I& R+ @, l& d8 s1 \//31-25: Year(0-127 org.1980), 24-21: Month(1-12), 20-16: Day(1-31) */ $ P+ s% ^% R T3 F( G7 v" W
//15-11: Hour(0-23), 10-5: Minute(0-59), 4-0: Second(0-29 *2) */ 4 e( @9 x% ^; B7 E9 i3 X
DWORD get_fattime (void)
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return 0;$ ]4 [5 | l3 r3 I1 O9 @& `! G9 A
}
( U% V4 A. A- r+ t7 U在main函数里面加入头文件
1 S" j9 t4 S* B7 PFATFS fatfs;
9 r2 T8 v+ A! m' q2 [: B5 T。。。。
1 v! h0 p/ @8 Q1 c, q4 Z' J# G while(sdcard_init())//检测不到SD卡. z. t5 a5 \2 Z% W. N. c
{
; v- H- e+ i( F- b. G delay_ms(500);
: s- B! V5 A5 w6 t LED0(led0sta^=1);//DS0闪烁
& x! L- J* i, v& ~8 z }
* ?! _2 E% Z( X6 e$ n' k( F show_sdcard_info(); //打印SD卡相关信息* |$ `- h7 Z! V* i3 J9 l
sta = f_mount(&fatfs,"0:/",1);
n! n7 @' N7 p+ W if (sta): p7 ?* J: o7 d4 t
{
+ R; G+ G6 i V1 @3 \, H printf("SD Card 加载失败 错误码： %d \r\n",sta);
5 |6 Y B6 A1 b. b' [. R ]. M delay_ms(800);
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printf("SD Card 加载成功\r\n");: A9 L; x0 T/ c; ?& n& J* ~ z: g# K
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编译下载后果然是打印的sd卡加载成功
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发稿与2018年3月13日* j4 o! e D& y
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