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C51 COMPILER V7.00 FILE 04/28/2004 09:32:00 PAGE 1
C51 COMPILER V7.00, COMPILATION OF MODULE FILE
OBJECT MODULE PLACED IN C:\Documents and Settings\lvxc\桌面\AA\file.obj
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE modules\file\file.c OPTIMIZE(7,SPEED) BROWSE INCDIR(.\modules\system;.\;.\;
-.\lib_refd) DEFINE(KEIL) DEBUG OBJECTEXTEND PRINT(.\file.lst) OBJECT(C:\Documents and Settings\lvxc\桌面\AA\file.obj)
stmt level source
1 /*C**************************************************************************
2 * NAME: file.c
3 *----------------------------------------------------------------------------
4 * Copyright (c) 2003 Atmel.
5 *----------------------------------------------------------------------------
6 * RELEASE: snd1c-refd-nf-4_0_3
7 * REVISION: 1.10
8 *----------------------------------------------------------------------------
9 * PURPOSE:
10 * This file contains extention routines to the file system
11 *****************************************************************************/
12
13 /*_____ I N C L U D E S ____________________________________________________*/
14
15 #include "config.h" /* system configuration */
16 #include "modules\display\disp_task.h" /* display definition */
17 #include "file.h" /* file system definition */
18
19 /*_____ M A C R O S ________________________________________________________*/
20
21 #define F_SEEK_TIME ((Byte)4)
22
23 extern bit fs_memory; /* selected file system */
24
25 /*_____ D E F I N I T I O N ________________________________________________*/
26
27
28 /*_____ D E C L A R A T I O N ______________________________________________*/
29
30
31 /*F**************************************************************************
32 * NAME: file_seek_prev
33 *----------------------------------------------------------------------------
34 * PARAMS:
35 * id: file type identifier
36 * loop: loop to the last file
37 *
38 * return:
39 *----------------------------------------------------------------------------
40 * PURPOSE:
41 * Select previous file with specified extension
42 *----------------------------------------------------------------------------
43 * EXAMPLE:
44 *----------------------------------------------------------------------------
45 * NOTE:
46 * Depending on the time played, this function selects the previous file
47 * or restarts the file under playing.
48 *----------------------------------------------------------------------------
49 * REQUIREMENTS:
50 *****************************************************************************/
51 bit file_seek_prev (Byte id, bit loop)
52 {
53 1 if ((disp_get_sec() < F_SEEK_TIME) && (disp_get_min() == 0))
54 1 {
C51 COMPILER V7.00 FILE 04/28/2004 09:32:00 PAGE 2
55 2 while (File_goto_prev() == OK)
56 2 {
57 3 /* a file or a directory exists */
58 3 if ((File_type() & id) != 0) /* specified file type found */
59 3 {
60 4 return TRUE; /* exit when found */
61 4 }
62 3 }
63 2 /* beginning of dir */
64 2 if (File_goto_last() == OK) /* goto to the end of dir */
65 2 {
66 3 if (loop) /* loop = false when ask previous and play */
67 3 {
68 4 do
69 4 {
70 5 if ((File_type() & id) != 0) /* look for a specified file */
71 5 { /* specified file type found */
72 6 return TRUE; /* exit when found */
73 6 }
74 5 }
75 4 while (File_goto_prev() == OK);
76 4 return FALSE;
77 4 }
78 3 else /* no loop */
79 3 {
80 4 return FALSE; /* Stop at the last */
81 4 }
82 3 }
83 2 else
84 2 return FALSE;
85 2 }
86 1 return TRUE;
87 1 }
88
89
90 /*F**************************************************************************
91 * NAME: file_seek_next
92 *----------------------------------------------------------------------------
93 * PARAMS:
94 * id: file type identifier
95 * loop: loop to the first file
96 *
97 * return:
98 *----------------------------------------------------------------------------
99 * PURPOSE:
100 * Select next file with specified extension
101 *----------------------------------------------------------------------------
102 * EXAMPLE:
103 *----------------------------------------------------------------------------
104 * NOTE:
105 *----------------------------------------------------------------------------
106 * REQUIREMENTS:
107 *****************************************************************************/
108 bit file_seek_next (Byte id, bit loop)
109 {
110 1
111 1 while (File_goto_next() == OK)
112 1 {
113 2 /* file or dir found */
114 2 if ((File_type() & id) != 0)
115 2 { /* specified file type found */
116 3 return TRUE; /* exit when found */
C51 COMPILER V7.00 FILE 04/28/2004 09:32:00 PAGE 3
117 3 }
118 2 }
119 1 /* end of dir */
120 1 if (File_goto_first() == OK) /* goto beginning of the dir */
121 1 {
122 2 if (loop) /* loop ? */
123 2 { /* re-start at the beginning */
124 3 do
125 3 {
126 4 if ((File_type() & id) != 0) /* look for a specified file */
127 4 { /* specified file type found */
128 5 return TRUE; /* exit when found */
129 5 }
130 4 }
131 3 while (File_goto_next() == OK);
132 3 return FALSE; /* no specified file in the dir */
133 3 }
134 2 else /* no loop */
135 2 {
136 3 return FALSE; /* Stop at the beginning */
137 3 }
138 2 }
139 1 else
140 1 return FALSE;
141 1 }
142
143
144 /*F**************************************************************************
145 * NAME: file_entry_dir
146 *----------------------------------------------------------------------------
147 * PARAMS:
148 * id: file type identifier
149 *
150 * return:
151 * OK: file type found in dir
152 * KO: file type not found in dir
153 *----------------------------------------------------------------------------
154 * PURPOSE:
155 * Enter a directory
156 *----------------------------------------------------------------------------
157 * EXAMPLE:
158 *----------------------------------------------------------------------------
159 * NOTE:
160 *----------------------------------------------------------------------------
161 * REQUIREMENTS:
162 *****************************************************************************/
163 bit file_entry_dir (Byte id)
164 {
165 1 if (File_type() == FILE_DIR) /* only for directory! */
166 1 { /* stopped on a directory */
167 2 if (File_goto_child(id) == KO)
168 2 {
169 3 /* no file in dir */
170 3 File_goto_parent(id);
171 3 return KO;
172 3 }
173 2 else
174 2 return OK;
175 2 }
176 1 else
177 1 {
178 2 return KO;
C51 COMPILER V7.00 FILE 04/28/2004 09:32:00 PAGE 4
179 2 }
180 1 }
181
182
183
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 133 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- 3
IDATA SIZE = ---- ----
BIT SIZE = ---- 2
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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