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/* ... */
#include "main.h"
Includes
FATFS SDFatFs;
FIL MyFile;
char SDPath[4];
RGB_typedef *RGB_matrix;
uint8_t _aucLine[2048];
uint32_t line_counter = 0;
uint16_t Xpos = 0;
uint16_t Ypos = 0;
Private variables
static void SystemClock_Config(void);
static uint8_t Jpeg_CallbackFunction(uint8_t* Row, uint32_t DataLength);
static void LCD_Config(void);
static void Error_Handler(void);
Private function prototypes
/* ... */
int main(void)
{
/* ... */
HAL_Init();
SystemClock_Config();
BSP_LED_Init(LED3);
LCD_Config();
if(FATFS_LinkDriver(&SD_Driver, SDPath) == 0)
{
if(f_mount(&SDFatFs, (TCHAR const*)SDPath, 0) == FR_OK)
{
if(f_open(&MyFile, "image.jpg", FA_READ) == FR_OK)
{
}if (f_open(&MyFile, "image.jpg", FA_READ) == FR_OK) { ... }
else
{
Error_Handler();
}else { ... }
}if (f_mount(&SDFatFs, (TCHAR const*)SDPath, 0) == FR_OK) { ... }
}if (FATFS_LinkDriver(&SD_Driver, SDPath) == 0) { ... }
else
{
Error_Handler();
}else { ... }
jpeg_decode(&MyFile, IMAGE_WIDTH, _aucLine, Jpeg_CallbackFunction);
f_close(&MyFile);
while (1)
{
}while (1) { ... }
}{ ... }
/* ... */
static void LCD_Config(void)
{
uint8_t lcd_status = LCD_OK;
lcd_status = BSP_LCD_Init();
if(lcd_status != LCD_OK)
{
Error_Handler();
}if (lcd_status != LCD_OK) { ... }
BSP_LCD_LayerDefaultInit(0, LCD_FB_START_ADDRESS);
BSP_LCD_SelectLayer(0);
BSP_LCD_Clear(LCD_COLOR_WHITE);
BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_Clear(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_DARKBLUE);
BSP_LCD_DisplayStringAt(0, 430, (uint8_t *)"Application LibJPEG_Decoding", CENTER_MODE);
Xpos = (uint16_t)((BSP_LCD_GetXSize() - IMAGE_WIDTH) / 2);
Ypos = (uint16_t)((BSP_LCD_GetYSize() - IMAGE_HEIGHT) / 2);
}{ ... }
/* ... */
static uint8_t Jpeg_CallbackFunction(uint8_t* Row, uint32_t DataLength)
{
uint32_t i = 0;
RGB_matrix = (RGB_typedef*)Row;
uint32_t ARGB8888Buffer[IMAGE_WIDTH];
#ifdef SWAP_RB
for(i = 0; i < IMAGE_WIDTH; i++)
{
ARGB8888Buffer[i] = (uint32_t)
(
0xFF000000 |
(((uint32_t)(RGB_matrix[i].B) & 0x000000FF) >> 0) |
(((uint32_t)(RGB_matrix[i].G) & 0x000000FF) << 8) |
(((uint32_t)(RGB_matrix[i].R) & 0x000000FF) << 16)
);
BSP_LCD_DrawPixel((i + Xpos), (line_counter + Ypos), ARGB8888Buffer[i]);
}for (i = 0; i < IMAGE_WIDTH; i++) { ... }
/* ... */#else
for(i = 0; i < IMAGE_WIDTH; i++)
{
ARGB8888Buffer[i] = (uint32_t)
(
0xFF000000 |
(((uint32_t)(RGB_matrix[i].R) & 0x000000FF) >> 0) |
(((uint32_t)(RGB_matrix[i].G) & 0x000000FF) << 8) |
(((uint32_t)(RGB_matrix[i].B) & 0x000000FF) << 16)
);
BSP_LCD_DrawPixel((i + Xpos), (line_counter + Ypos), ARGB8888Buffer[i]);
}for (i = 0; i < IMAGE_WIDTH; i++) { ... }
/* ... */#endif
line_counter++;
return 0;
}{ ... }
/* ... */
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
__HAL_RCC_PWR_CLK_ENABLE();
/* ... */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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;
#if defined(USE_STM32469I_DISCO_REVA)
RCC_OscInitStruct.PLL.PLLM = 25;
#else
RCC_OscInitStruct.PLL.PLLM = 8;
#endif
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
RCC_OscInitStruct.PLL.PLLR = 6;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
while(1) { ; }
}if (ret != HAL_OK) { ... }
ret = HAL_PWREx_EnableOverDrive();
if(ret != HAL_OK)
{
while(1) { ; }
}if (ret != HAL_OK) { ... }
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;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
if(ret != HAL_OK)
{
while(1) { ; }
}if (ret != HAL_OK) { ... }
}{ ... }
/* ... */
static void Error_Handler(void)
{
BSP_LED_On(LED3);
while(1)
{
}while (1) { ... }
}{ ... }
#ifdef USE_FULL_ASSERT
/* ... */
void assert_failed(uint8_t* file, uint32_t line)
{
/* ... */
while (1)
{
}while (1) { ... }
}assert_failed (uint8_t* file, uint32_t line) { ... }
/* ... */#endifPrivate functions