static void LCD_Config(void)
{
/* LCD Initialization */
LCD_Init();
/* LCD Layers Initialization */
LCD_LayerInit();
/* Enable the LCD */
LCD_DisplayOn();
/* Set LCD Background Layer */
LCD_SetLayer(LCD_BACKGROUND_LAYER);
/* Clear the Background Layer */
LCD_Clear(LCD_COLOR_WHITE);
/* Set LCD Foreground Layer */
LCD_SetLayer(LCD_FOREGROUND_LAYER);
/* Clear the Foreground Layer */
LCD_Clear(LCD_COLOR_WHITE);
/* Configure and enable the Color Keying feature */
LCD_SetColorKeying(0);
/* Configure the transparency for foreground : Increase the transprency */
LCD_SetTransparency(100);
}
void MainTask_ColorKeying(void)
{
uint32_t lastMiliseconds = 0;
LCD_Init();
SDRAM_Init();
while(!tamperPushed)
{
LCD_ReSetColorKeying();
LTDC_DitherCmd(ENABLE);
DrawText((uint8_t*)" Color Keying OFF");
DMA2D_CopySTLogo(LOGO_OFFSET);
LCD_BackgroundLayerInit();
/* wait 2s */
lastMiliseconds = getMiliseconds();
while (!tamperPushed && ((getMiliseconds()-lastMiliseconds)<2000))
{
}
LCD_SetColorKeying(0xFFFFFF);
DrawText((uint8_t*)" Color Keying ON");
DMA2D_CopySTLogo(LOGO_OFFSET);
/* wait 2s */
lastMiliseconds = getMiliseconds();
while (!tamperPushed && ((getMiliseconds()-lastMiliseconds)<2000))
{
}
LTDC_CLUTCmd(LTDC_Layer1, DISABLE);
LTDC_CLUTCmd(LTDC_Layer2, DISABLE);
LCD_ReSetColorKeying();
LTDC_ReloadConfig(LTDC_IMReload);
}
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f429_439xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f4xx.c file
*/
/* User button will be used */
STM_EVAL_PBInit(BUTTON_USER, BUTTON_MODE_GPIO);
/* LCD Configuration */
LCD_Config();
/* Enable Layer1 */
LTDC_LayerCmd(LTDC_Layer1, ENABLE);
/* Reload configuration of Layer1 */
LTDC_ReloadConfig(LTDC_IMReload);
/* Enable The LCD */
LTDC_Cmd(ENABLE);
while (1)
{
/* Wait for User push-button is pressed */
while (STM_EVAL_PBGetState(BUTTON_USER) != Bit_RESET)
{
}
/* Wait for User push-button is released */
while (STM_EVAL_PBGetState(BUTTON_USER) != Bit_SET)
{
}
if(ubPressedButton == PRESSED_1)
{
/* Set Color Keying to red (RGB = 0xFF0000) */
LCD_SetColorKeying(0xFF0000);
ubPressedButton = PRESSED_2;
}
else if(ubPressedButton == PRESSED_2)
{
/* Set Color Keying to blue (RGB = 0x0000FF) */
LCD_SetColorKeying(0xFF);
ubPressedButton = PRESSED_3;
}
else if(ubPressedButton == PRESSED_3)
{
/* Set Color Keying to green (RGB = 0x00FF00) */
LCD_SetColorKeying(0xFF00);
ubPressedButton = PRESSED_4;
}
else if(ubPressedButton == PRESSED_4)
{
/* Set Color Keying to blue and green (RGB = 0x00FFFF) */
LCD_SetColorKeying(0xFFFF);
ubPressedButton = PRESSED_5;
}
else if(ubPressedButton == PRESSED_5)
{
/* Set Color Keying to red and green (RGB = 0x00FFFF) */
LCD_SetColorKeying(0xFFFF00);
ubPressedButton = PRESSED_6;
}
else
{
/* Set Color Keying to blue and red (RGB = 0x00FFFF) */
LCD_SetColorKeying(0xFF00FF);
ubPressedButton = PRESSED_1;
}
}
}
static void DrawText(uint8_t* text)
{
/* Windowing configuration */
/* In this case all the active display area is used to display a picture then :
Horizontal start = horizontal synchronization + Horizontal back porch = 30
Horizontal stop = Horizontal start + window width -1 = 30 + 240 -1
Vertical start = vertical synchronization + vertical back porch = 4
Vertical stop = Vertical start + window height -1 = 4 + 320 -1 */
LTDC_Layer_InitStruct.LTDC_HorizontalStart = 30;
LTDC_Layer_InitStruct.LTDC_HorizontalStop = (LCD_PIXEL_WIDTH + 30 - 1);
LTDC_Layer_InitStruct.LTDC_VerticalStart = 4;
LTDC_Layer_InitStruct.LTDC_VerticalStop = (LCD_PIXEL_HEIGHT + 4 - 1);
/* Pixel Format configuration*/
LTDC_Layer_InitStruct.LTDC_PixelFormat = LTDC_Pixelformat_RGB565;
/* Alpha constant (255 totally opaque) */
LTDC_Layer_InitStruct.LTDC_ConstantAlpha = 255;
/* Default Color configuration (configure A,R,G,B component values) */
LTDC_Layer_InitStruct.LTDC_DefaultColorBlue = 0;
LTDC_Layer_InitStruct.LTDC_DefaultColorGreen = 0;
LTDC_Layer_InitStruct.LTDC_DefaultColorRed = 0;
LTDC_Layer_InitStruct.LTDC_DefaultColorAlpha = 255;
/* the length of one line of pixels in bytes + 3 then :
Line Lenth = Active high width x number of bytes per pixel + 3
Active high width = LCD_PIXEL_WIDTH
number of bytes per pixel = 2 (pixel_format : RGB565)
*/
LTDC_Layer_InitStruct.LTDC_CFBLineLength = ((LCD_PIXEL_WIDTH * 2) + 3);
/* the pitch is the increment from the start of one line of pixels to the
start of the next line in bytes, then :
Pitch = Active high width x number of bytes per pixel */
LTDC_Layer_InitStruct.LTDC_CFBPitch = (LCD_PIXEL_WIDTH * 2);
/* Configure the number of lines */
LTDC_Layer_InitStruct.LTDC_CFBLineNumber = LCD_PIXEL_HEIGHT;
/* Configure Layer2 */
/* Start Address configuration : the LCD Frame buffer is defined on SDRAM w/ Offset */
LTDC_Layer_InitStruct.LTDC_CFBStartAdress = LCD_FRAME_BUFFER + BUFFER_OFFSET;
/* Configure blending factors */
LTDC_Layer_InitStruct.LTDC_BlendingFactor_1 = LTDC_BlendingFactor1_PAxCA;
LTDC_Layer_InitStruct.LTDC_BlendingFactor_2 = LTDC_BlendingFactor2_PAxCA;
/* Initialize LTDC layer 2 */
LTDC_LayerInit(LTDC_Layer2, <DC_Layer_InitStruct);
/* LTDC configuration reload */
LTDC_ReloadConfig(LTDC_IMReload);
/* Enable foreground & background Layers */
LTDC_LayerCmd(LTDC_Layer2, ENABLE);
/* Set default font */
LCD_SetFont(&LCD_DEFAULT_FONT);
/* Set LCD foreground layer */
LCD_SetLayer(LCD_FOREGROUND_LAYER);
LCD_SetColorKeying(0x0);
/* LCD display message */
LCD_Clear(LCD_COLOR_BLACK);
LCD_SetTextColor(LCD_COLOR_RED);
LCD_SetBackColor(LCD_COLOR_BLACK);
LCD_DisplayStringLine(LCD_LINE_1,(uint8_t*)text);
}