FatFs_USBDisk
Select one of the symbols to view example projects that use it.
 
Outline
Includes
#include "main.h"
Private variables
USBDISKFatFs
MyFile
USBDISKPath
hUSBHost
MSC_ApplicationTypeDef
Appli_state
Private function prototypes
Private functions
main()
MSC_Application()
USBH_UserProcess(USBH_HandleTypeDef *, uint8_t)
SystemClock_Config()
Error_Handler()
Files
loading...
SourceVuSTM32 Libraries and SamplesFatFs_USBDiskSrc/main.c
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/** ****************************************************************************** * @file FatFs/FatFs_USBDisk/Src/main.c * @author MCD Application Team * @brief Main program body * This sample code shows how to use FatFs with USB disk drive. ****************************************************************************** * @attention * * Copyright (c) 2017 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** *//* ... */ /* Includes ------------------------------------------------------------------*/ #include "main.h" Includes /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ FATFS USBDISKFatFs; /* File system object for USB disk logical drive */ FIL MyFile; /* File object */ char USBDISKPath[4]; /* USB Host logical drive path */ USBH_HandleTypeDef hUSBHost; /* USB Host handle */ typedef enum { APPLICATION_IDLE = 0, APPLICATION_START, APPLICATION_RUNNING, ...}MSC_ApplicationTypeDef; MSC_ApplicationTypeDef Appli_state = APPLICATION_IDLE; Private variables /* Private function prototypes -----------------------------------------------*/ static void SystemClock_Config(void); static void Error_Handler(void); static void USBH_UserProcess(USBH_HandleTypeDef *phost, uint8_t id); static void MSC_Application(void); Private function prototypes /* Private functions ---------------------------------------------------------*/ /** * @brief Main program * @param None * @retval None *//* ... */ int main(void) { /* STM32F4xx HAL library initialization: - Configure the Flash prefetch, instruction and Data caches - Configure the Systick to generate an interrupt each 1 msec - Set NVIC Group Priority to 4 - Global MSP (MCU Support Package) initialization *//* ... */ HAL_Init(); /* Configure the system clock to 168 MHz */ SystemClock_Config(); /* Configure LED1 and LED3 */ BSP_LED_Init(LED1); BSP_LED_Init(LED3); /*##-1- Link the USB Host disk I/O driver ##################################*/ if(FATFS_LinkDriver(&USBH_Driver, USBDISKPath) == 0) { /*##-2- Init Host Library ################################################*/ USBH_Init(&hUSBHost, USBH_UserProcess, 0); /*##-3- Add Supported Class ##############################################*/ USBH_RegisterClass(&hUSBHost, USBH_MSC_CLASS); /*##-4- Start Host Process ###############################################*/ USBH_Start(&hUSBHost); /*##-5- Run Application (Blocking mode) ##################################*/ while (1) { /* USB Host Background task */ USBH_Process(&hUSBHost); /* Mass Storage Application State Machine */ switch(Appli_state) { case APPLICATION_START: MSC_Application(); Appli_state = APPLICATION_IDLE; break; case APPLICATION_START: case APPLICATION_IDLE: default: break; default }switch (Appli_state) { ... } }while (1) { ... } }if (FATFS_LinkDriver(&USBH_Driver, USBDISKPath) == 0) { ... } /* Infinite loop */ for(;;); }{ ... } /** * @brief Main routine for Mass Storage Class * @param None * @retval None *//* ... */ static void MSC_Application(void) { FRESULT res; /* FatFs function common result code */ uint32_t byteswritten, bytesread; /* File write/read counts */ uint8_t wtext[] = "This is STM32 working with FatFs"; /* File write buffer */ uint8_t rtext[100]; /* File read buffer */ /* Register the file system object to the FatFs module */ if(f_mount(&USBDISKFatFs, (TCHAR const*)USBDISKPath, 0) != FR_OK) { /* FatFs Initialization Error */ Error_Handler(); }if (f_mount(&USBDISKFatFs, (TCHAR const*)USBDISKPath, 0) != FR_OK) { ... } else { /* Create and Open a new text file object with write access */ if(f_open(&MyFile, "STM32.TXT", FA_CREATE_ALWAYS | FA_WRITE) != FR_OK) { /* 'STM32.TXT' file Open for write Error */ Error_Handler(); }if (f_open(&MyFile, "STM32.TXT", FA_CREATE_ALWAYS | FA_WRITE) != FR_OK) { ... } else { /* Write data to the text file */ res = f_write(&MyFile, wtext, sizeof(wtext), (void *)&byteswritten); if((byteswritten == 0) || (res != FR_OK)) { /* 'STM32.TXT' file Write or EOF Error */ Error_Handler(); }if ((byteswritten == 0) || (res != FR_OK)) { ... } else { /* Close the open text file */ f_close(&MyFile); /* Open the text file object with read access */ if(f_open(&MyFile, "STM32.TXT", FA_READ) != FR_OK) { /* 'STM32.TXT' file Open for read Error */ Error_Handler(); }if (f_open(&MyFile, "STM32.TXT", FA_READ) != FR_OK) { ... } else { /* Read data from the text file */ res = f_read(&MyFile, rtext, sizeof(rtext), (void *)&bytesread); if((bytesread == 0) || (res != FR_OK)) { /* 'STM32.TXT' file Read or EOF Error */ Error_Handler(); }if ((bytesread == 0) || (res != FR_OK)) { ... } else { /* Close the open text file */ f_close(&MyFile); /* Compare read data with the expected data */ if((bytesread != byteswritten)) { /* Read data is different from the expected data */ Error_Handler(); }if ((bytesread != byteswritten)) { ... } else { /* Success of the demo: no error occurrence */ BSP_LED_On(LED1); }else { ... } }else { ... } }else { ... } }else { ... } }else { ... } }else { ... } /* Unlink the USB disk I/O driver */ FATFS_UnLinkDriver(USBDISKPath); }{ ... } /** * @brief User Process * @param phost: Host handle * @param id: Host Library user message ID * @retval None *//* ... */ static void USBH_UserProcess(USBH_HandleTypeDef *phost, uint8_t id) { switch(id) { case HOST_USER_SELECT_CONFIGURATION: break; case HOST_USER_SELECT_CONFIGURATION: case HOST_USER_DISCONNECTION: Appli_state = APPLICATION_IDLE; BSP_LED_Off(LED1); BSP_LED_Off(LED3); f_mount(NULL, (TCHAR const*)"", 0); break; case HOST_USER_DISCONNECTION: case HOST_USER_CLASS_ACTIVE: Appli_state = APPLICATION_START; break; case HOST_USER_CLASS_ACTIVE: default: break; default }switch (id) { ... } }{ ... } /** * @brief System Clock Configuration * The system Clock is configured as follow : * System Clock source = PLL (HSE) * SYSCLK(Hz) = 168000000 * HCLK(Hz) = 168000000 * AHB Prescaler = 1 * APB1 Prescaler = 4 * APB2 Prescaler = 2 * HSE Frequency(Hz) = 25000000 * PLL_M = 25 * PLL_N = 336 * PLL_P = 2 * PLL_Q = 7 * VDD(V) = 3.3 * Main regulator output voltage = Scale1 mode * Flash Latency(WS) = 5 * @param None * @retval None *//* ... */ static void SystemClock_Config(void) { RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_OscInitTypeDef RCC_OscInitStruct; /* Enable Power Control clock */ __HAL_RCC_PWR_CLK_ENABLE(); /* The voltage scaling allows optimizing the power consumption when the device is clocked below the maximum system frequency, to update the voltage scaling value regarding system frequency refer to product datasheet. *//* ... */ __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); /* Enable HSE Oscillator and activate PLL with HSE as source */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLM = 25; RCC_OscInitStruct.PLL.PLLN = 336; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLQ = 7; HAL_RCC_OscConfig(&RCC_OscInitStruct); /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers *//* ... */ RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5); /* STM32F405x/407x/415x/417x Revision Z and upper devices: prefetch is supported */ if (HAL_GetREVID() >= 0x1001) { /* Enable the Flash prefetch */ __HAL_FLASH_PREFETCH_BUFFER_ENABLE(); }if (HAL_GetREVID() >= 0x1001) { ... } }{ ... } /** * @brief This function is executed in case of error occurrence. * @param None * @retval None *//* ... */ static void Error_Handler(void) { /* Turn LED3 on */ BSP_LED_On(LED3); while(1) { }while (1) { ... } }{ ... } #ifdef USE_FULL_ASSERT /** * @brief Reports the name of the source file and the source line number * where the assert_param error has occurred. * @param file: pointer to the source file name * @param line: assert_param error line source number * @retval None *//* ... */ void assert_failed(uint8_t* file, uint32_t line) { /* User can add his own implementation to report the file name and line number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) *//* ... */ /* Infinite loop */ while (1) { }while (1) { ... } }assert_failed (uint8_t* file, uint32_t line) { ... } /* ... */#endifPrivate functions
Details
Show:
from
Types: Columns:
This file uses the notable symbols shown below. Click anywhere in the file to view more details.