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
/**
******************************************************************************
* @file LibJPEG/LibJPEG_Encoding/Src/main.c
* @author MCD Application Team
* @brief Main program body
* This sample code shows how to compress BMP file to JPEG file.
******************************************************************************
* @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"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
FATFS SDFatFs; /* File system object for SD card logical drive */
FIL MyFile, MyFile1; /* File objects */
char SDPath[4]; /* SD card logical drive path */
uint32_t offset = 0xC0000000;
RGB_typedef *RGB_matrix;
uint8_t Image_BMP[1024];
uint32_t counter, bytesread;
/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static uint8_t Jpeg_CallbackFunction(uint8_t* Row, uint32_t DataLength);
static void LCD_Config(void);
/* 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();
/*##-1- LCD Configuration ##################################################*/
LCD_Config();
/*##-2- Link the micro SD disk I/O driver ##################################*/
if(FATFS_LinkDriver(&SD_Driver, SDPath) == 0)
{
/*##-3- Register the file system object to the FatFs module ##############*/
if(f_mount(&SDFatFs, (TCHAR const*)SDPath, 0) == FR_OK)
{
/*##-4- Create and Open a new jpg image file with write access #########*/
if(f_open(&MyFile1, "image.jpg", FA_CREATE_ALWAYS | FA_WRITE) == FR_OK)
{
/*##-5- Open the BMP image with read access ##########################*/
if(f_open(&MyFile, "image.bmp", FA_READ) == FR_OK)
{
/*##-6- Jpeg encoding ##############################################*/
jpeg_encode(&MyFile, &MyFile1, IMAGE_WIDTH, IMAGE_HEIGHT, IMAGE_QUALITY, Image_BMP);
/* Close the BMP and JPEG files */
f_close(&MyFile1);
f_close(&MyFile);
/*##-7- Jpeg decoding ##############################################*/
/* Open the BMP file for read */
if(f_open(&MyFile1, "image.jpg", FA_READ) == FR_OK)
{
/* Jpeg Decoding for display to LCD */
jpeg_decode(&MyFile1, IMAGE_WIDTH, Image_BMP, Jpeg_CallbackFunction);
/* Close the BMP file */
f_close(&MyFile1);
}
}
}
}
}
/* Infinite loop */
while (1)
{
}
}
/**
* @brief LCD Configuration.
* @Param None
* @retval None
*/
static void LCD_Config(void)
{
/* Initialize the SRAM */
BSP_SRAM_Init();
BSP_LCD_Init();
/* Enable the LCD */
BSP_LCD_DisplayOn();
/* Clear the LCD Background layer */
BSP_LCD_Clear(LCD_COLOR_WHITE);
}
/**
* @brief Copy decompressed data to display buffer.
* @param Row: Output row buffer
* @param DataLength: Row width in output buffer
* @retval None
*/
static uint8_t Jpeg_CallbackFunction(uint8_t* Row, uint32_t DataLength)
{
uint32_t i = 0;
RGB_matrix = (RGB_typedef*)Row;
uint16_t RGB16Buffer[IMAGE_WIDTH];
for(i = 0; i < IMAGE_WIDTH; i++)
{
RGB16Buffer[i] = (uint16_t)
(((RGB_matrix[i].B & 0x00F8) >> 3)|
((RGB_matrix[i].G & 0x00FC) << 3)|
((RGB_matrix[i].R & 0x00F8) << 8));
BSP_LCD_DrawPixel(i, counter, RGB16Buffer[i]);
}
counter++;
return 0;
}
/**
* @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();
}
}
#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
Details ![]()
Show: from Types: Columns: ![]( "Show Project Names")
![]( "Show Locations")
![]( "Show Referring Symbols")
![]( "Show Scope")
This file uses the notable symbols shown below. Click anywhere in the file to view more details.