1 /* This is a small demo of the high-performance FileX FAT file system with LevelX
2 and the NOR simulated driver. */
3
4 #include "fx_api.h"
5 #include "lx_api.h"
6
7
8 #define DEMO_STACK_SIZE 2048
9
10
11 /* Buffer for FileX FX_MEDIA sector cache. This must be large enough for at least one
12 sector, which are typically 512 bytes in size. */
13
14 unsigned char media_memory[512];
15
16
17 /* Define NOR simulated device driver entry. */
18
19 VOID _fx_nor_flash_simulator_driver(FX_MEDIA *media_ptr);
20
21
22 /* Define LevelX NOR simulated flash erase. */
23
24 UINT _lx_nor_flash_simulator_erase_all(VOID);
25
26
27 /* Define thread prototypes. */
28
29 void thread_0_entry(ULONG thread_input);
30 UCHAR thread_0_stack[DEMO_STACK_SIZE];
31
32
33 /* Define FileX global data structures. */
34
35 FX_MEDIA nor_disk;
36 FX_FILE my_file;
37
38
39
40 /* Define ThreadX global data structures. */
41
42 #ifndef LX_STANDALONE_ENABLE
43 TX_THREAD thread_0;
44 #endif
45 ULONG thread_0_counter;
46
47
main(void)48 int main(void)
49 {
50 /* Enter the ThreadX kernel. */
51 #ifndef LX_STANDALONE_ENABLE
52 tx_kernel_enter();
53 #else
54
55 /* Initialize NOR flash. */
56 lx_nor_flash_initialize();
57
58 /* Initialize FileX. */
59 fx_system_initialize();
60
61 thread_0_entry(0);
62 #endif
63
64 }
65
66
67 /* Define what the initial system looks like. */
68
69 #ifndef LX_STANDALONE_ENABLE
tx_application_define(void * first_unused_memory)70 void tx_application_define(void *first_unused_memory)
71 {
72
73 /* Put system definition stuff in here, e.g. thread creates and other assorted
74 create information. */
75
76 /* Create the main thread. */
77 tx_thread_create(&thread_0, "thread 0", thread_0_entry, 0,
78 thread_0_stack, DEMO_STACK_SIZE,
79 1, 1, TX_NO_TIME_SLICE, TX_AUTO_START);
80
81 /* Initialize NOR flash. */
82 lx_nor_flash_initialize();
83
84 /* Initialize FileX. */
85 fx_system_initialize();
86 }
87 #endif
88
89
90
thread_0_entry(ULONG thread_input)91 void thread_0_entry(ULONG thread_input)
92 {
93
94 UINT status;
95 ULONG actual;
96 CHAR local_buffer[30];
97
98 LX_PARAMETER_NOT_USED(thread_input);
99
100 /* Erase the simulated NOR flash. */
101 _lx_nor_flash_simulator_erase_all();
102
103 /* Format the NOR disk - the memory for the NOR flash disk is setup in
104 the NOR simulator. Note that for best performance, the format of the
105 NOR flash should be less than one full NOR flash block of sectors. */
106 fx_media_format(&nor_disk,
107 _fx_nor_flash_simulator_driver, // Driver entry
108 FX_NULL, // Unused
109 media_memory, // Media buffer pointer
110 sizeof(media_memory), // Media buffer size
111 "MY_NOR_DISK", // Volume Name
112 1, // Number of FATs
113 32, // Directory Entries
114 0, // Hidden sectors
115 120, // Total sectors
116 512, // Sector size
117 1, // Sectors per cluster
118 1, // Heads
119 1); // Sectors per track
120
121 /* Loop to repeat the demo over and over! */
122 do
123 {
124
125 /* Open the NOR disk. */
126 status = fx_media_open(&nor_disk, "NOR DISK", _fx_nor_flash_simulator_driver, FX_NULL, media_memory, sizeof(media_memory));
127
128 /* Check the media open status. */
129 if (status != FX_SUCCESS)
130 {
131
132 /* Error, break the loop! */
133 break;
134 }
135
136 /* Create a file called TEST.TXT in the root directory. */
137 status = fx_file_create(&nor_disk, "TEST.TXT");
138
139 /* Check the create status. */
140 if (status != FX_SUCCESS)
141 {
142
143 /* Check for an already created status. This is expected on the
144 second pass of this loop! */
145 if (status != FX_ALREADY_CREATED)
146 {
147
148 /* Create error, break the loop. */
149 break;
150 }
151 }
152
153 /* Open the test file. */
154 status = fx_file_open(&nor_disk, &my_file, "TEST.TXT", FX_OPEN_FOR_WRITE);
155
156 /* Check the file open status. */
157 if (status != FX_SUCCESS)
158 {
159
160 /* Error opening file, break the loop. */
161 break;
162 }
163
164 /* Seek to the beginning of the test file. */
165 status = fx_file_seek(&my_file, 0);
166
167 /* Check the file seek status. */
168 if (status != FX_SUCCESS)
169 {
170
171 /* Error performing file seek, break the loop. */
172 break;
173 }
174
175 /* Write a string to the test file. */
176 status = fx_file_write(&my_file, " ABCDEFGHIJKLMNOPQRSTUVWXYZ\n", 28);
177
178 /* Check the file write status. */
179 if (status != FX_SUCCESS)
180 {
181
182 /* Error writing to a file, break the loop. */
183 break;
184 }
185
186 /* Seek to the beginning of the test file. */
187 status = fx_file_seek(&my_file, 0);
188
189 /* Check the file seek status. */
190 if (status != FX_SUCCESS)
191 {
192
193 /* Error performing file seek, break the loop. */
194 break;
195 }
196
197 /* Read the first 28 bytes of the test file. */
198 status = fx_file_read(&my_file, local_buffer, 28, &actual);
199
200 /* Check the file read status. */
201 if ((status != FX_SUCCESS) || (actual != 28))
202 {
203
204 /* Error reading file, break the loop. */
205 break;
206 }
207
208 /* Close the test file. */
209 status = fx_file_close(&my_file);
210
211 /* Check the file close status. */
212 if (status != FX_SUCCESS)
213 {
214
215 /* Error closing the file, break the loop. */
216 break;
217 }
218
219 /* Delete the file. */
220 status = fx_file_delete(&nor_disk, "TEST.TXT");
221
222 /* Check the file delete status. */
223 if (status != FX_SUCCESS)
224 {
225
226 /* Error deleting the file, break the loop. */
227 break;
228 }
229
230 /* Close the media. */
231 status = fx_media_close(&nor_disk);
232
233 /* Check the media close status. */
234 if (status != FX_SUCCESS)
235 {
236
237 /* Error closing the media, break the loop. */
238 break;
239 }
240
241 /* Increment the thread counter, which represents the number
242 of successful passes through this loop. */
243 thread_0_counter++;
244
245 } while (1);
246
247 /* If we get here the FileX test failed! */
248 return;
249 }
250
251
