Outline ![]()
Files ![]()
loading...
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
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
/**
******************************************************************************
* @file Camera/Camera_To_USBDisk/Src/main.c
* @author MCD Application Team
* @brief This application describes how to configure the camera in continuous mode
and save picture under USBDisk.
******************************************************************************
* @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"
/** @addtogroup STM32F4xx_HAL_Applications
* @{
*/
/** @addtogroup Camera_To_USBDisk
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define PRESSED_FIRST 0x00
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint8_t ubPressedButton = PRESSED_FIRST;
FATFS MSC_FatFs; /* File system object for USB disk logical drive */
FIL MyFile; /* File object */
char MSC_Path[4]; /* USB Host logical drive path */
USBH_HandleTypeDef hUSBHost;
/* Image header */
const uint32_t aBMPHeader[14]=
{0xB0364D42, 0x00000004, 0x00360000, 0x00280000, 0x01400000, 0x00F00000, 0x00010000,
0x00000020, 0xF5400000, 0x00000006, 0x00000000, 0x00000000, 0x00000000, 0x0000};
typedef enum {
STORAGE_IDLE = 0,
STORAGE_READY,
}MSC_ApplicationTypeDef;
MSC_ApplicationTypeDef Appli_state = STORAGE_IDLE;
/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static void PicturePrepare(void);
static void Error_Handler(void);
static void SavePicture(void);
static void CAMERA_Capture(void);
static void USBH_UserProcess(USBH_HandleTypeDef *phost, uint8_t id);
#define RGB565_TO_R(pixel) (((pixel & 0x1F) << 3) | ((((pixel & 0x1F) << 3) & 0xE0) >> 5));
#define RGB565_TO_G(pixel) (((pixel & 0x7E0) >> 3) | ((((pixel & 0x7E0) >> 3) & 0xC0) >> 6));
#define RGB565_TO_B(pixel) (((pixel & 0xF800) >> 8) | ((((pixel & 0xF800) >> 8) & 0xE0) >> 5));
/* 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- Init Host Library ##################################################*/
USBH_Init(&hUSBHost, USBH_UserProcess, 0);
/* Add Supported Class */
USBH_RegisterClass(&hUSBHost, USBH_MSC_CLASS);
/* Start Host Process */
USBH_Start(&hUSBHost);
/*##-2- Configure Tamper button ############################################*/
BSP_PB_Init(BUTTON_TAMPER, BUTTON_MODE_GPIO);
/*##-3- Link the USB Host disk I/O driver ##################################*/
FATFS_LinkDriver(&USBH_Driver, MSC_Path);
/*##-4- Initialize the SRAM and LCD ########################################*/
BSP_LCD_Init();
BSP_SRAM_Init();
/*##-5- Camera Initialization and start capture ############################*/
/* Initialize the Camera */
BSP_CAMERA_Init(RESOLUTION_R320x240);
/* Start the Camera Capture */
BSP_CAMERA_ContinuousStart((uint8_t *)CAMERA_FRAME_BUFFER);
/*##-6- Run Application ####################################################*/
while (1)
{
/* USB Host Background task */
USBH_Process(&hUSBHost);
switch(Appli_state)
{
case STORAGE_READY:
CAMERA_Capture();
break;
case STORAGE_IDLE:
default:
break;
}
}
}
/**
* @brief Frame Event callback.
* @param None
* @retval None
*/
void BSP_CAMERA_FrameEventCallback(void)
{
/* Display on LCD */
BSP_LCD_DrawRGBImage(0, 0, 320, 240, (uint8_t *)CAMERA_FRAME_BUFFER);
}
/**
* @brief Main routine for Mass Storage Class
* @param None
* @retval None
*/
static void SavePicture(void)
{
FRESULT res1, res2; /* FatFs function common result code */
uint32_t byteswritten; /* File write count */
static uint32_t counter = 0;
uint8_t str[30];
/* Suspend the camera capture */
BSP_CAMERA_Suspend();
/* Prepare the image to be saved */
PicturePrepare();
/* Format the string */
sprintf((char *)str, "image_%lu.bmp", counter);
/* Create and Open a new file object with write access */
if(f_open(&MyFile, (const char*)str, FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)
{
Error_Handler();
}
else
{
/* Write data to the BMP file */
res1 = f_write(&MyFile, (uint32_t *)aBMPHeader, 54, (void *)&byteswritten);
res2 = f_write(&MyFile, (uint16_t *)SRAM_DEVICE_ADDR, (BSP_LCD_GetYSize()*BSP_LCD_GetXSize()*sizeof(uint32_t)), (void *)&byteswritten);
if((res1 != FR_OK) || (res2 != FR_OK) || (byteswritten == 0))
{
Error_Handler();
}
else
{
/* Close the open BMP file */
f_close(&MyFile);
/* Success of the demo: no error occurrence */
BSP_LED_On(LED1);
/* Wait for 2s */
HAL_Delay(2000);
counter++;
BSP_LED_Off(LED1);
}
}
}
/**
* @brief Main routine for Camera capture
* @param None
* @retval None
*/
static void CAMERA_Capture(void)
{
while(1)
{
if(BSP_PB_GetState(BUTTON_TAMPER) != GPIO_PIN_RESET)
{
if(BSP_PB_GetState(BUTTON_TAMPER) != GPIO_PIN_SET)
{
SavePicture();
BSP_CAMERA_Resume();
}
}
}
}
/**
* @brief Prepares the picture to be Saved in USB.
* @param None
* @retval None
*/
static void PicturePrepare(void)
{
uint32_t address = SRAM_DEVICE_ADDR;
uint16_t x = 0;
uint16_t y = 0;
uint16_t tmp = 0;
uint8_t aRGB[4];
/* Go to the address of the last line of BMP file */
address += ((BSP_LCD_GetXSize() * (BSP_LCD_GetYSize() - 1)) * 4);
/* Read data from GRAM and swap it into SRAM */
for(y = 0; y < (BSP_LCD_GetYSize()); y++)
{
for(x = 0; x < (BSP_LCD_GetXSize()); x++)
{
/* Write data to the SRAM memory */
tmp = BSP_LCD_ReadPixel(x, y);
aRGB[0] = RGB565_TO_R(tmp);
aRGB[1] = RGB565_TO_G(tmp);
aRGB[2] = RGB565_TO_B(tmp);
aRGB[3] = 0xFF;
if(BSP_SRAM_WriteData(address, (uint16_t *)aRGB, 2) != SRAM_OK)
{
Error_Handler();
}
else
{
address += 4;
}
}
address -= 8*BSP_LCD_GetXSize();
}
}
/**
* @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_DISCONNECTION:
Appli_state = STORAGE_IDLE;
f_mount(NULL, (TCHAR const*)"", 0);
break;
case HOST_USER_CLASS_ACTIVE:
/* Register the file system object to the FatFs module */
if(f_mount(&MSC_FatFs, (TCHAR const*)MSC_Path, 0) != FR_OK)
{
/* FatFs Initialization Error */
Error_Handler();
}
else
{
Appli_state = STORAGE_READY;
}
break;
}
}
/**
* @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)
{
}
}
/**
* @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 ad 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();
}
}
#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)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/