/**
* @brief Disables the Display.
* @param None
* @retval LCD Register Value.
*/
uint16_t ili9341_ReadID(void)
{
if (Is_ili9341_Initialized == 0)
{
ili9341_Init();
}
return ((uint16_t) ili9341_ReadData(LCD_READ_ID4, LCD_READ_ID4_SIZE));
}
/* LTDC init function */
static void MX_LTDC_Init(void)
{
LTDC_LayerCfgTypeDef pLayerCfg;
ili9341_Init();
hltdc.Instance = LTDC;
hltdc.Init.HSPolarity = LTDC_HSPOLARITY_AL;
hltdc.Init.VSPolarity = LTDC_VSPOLARITY_AL;
hltdc.Init.DEPolarity = LTDC_DEPOLARITY_AL;
hltdc.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
hltdc.Init.HorizontalSync = 9;
hltdc.Init.VerticalSync = 1;
hltdc.Init.AccumulatedHBP = 29;
hltdc.Init.AccumulatedVBP = 3;
hltdc.Init.AccumulatedActiveW = 269;
hltdc.Init.AccumulatedActiveH = 323;
hltdc.Init.TotalWidth = 279;
hltdc.Init.TotalHeigh = 327;
hltdc.Init.Backcolor.Blue = 0;
hltdc.Init.Backcolor.Green = 0;
hltdc.Init.Backcolor.Red = 0;
if (HAL_LTDC_Init(&hltdc) != HAL_OK)
{
Error_Handler();
}
pLayerCfg.WindowX0 = 0;
pLayerCfg.WindowX1 = 240;
pLayerCfg.WindowY0 = 0;
pLayerCfg.WindowY1 = 320;
pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_ARGB8888;
pLayerCfg.Alpha = 255;
pLayerCfg.Alpha0 = 0;
pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;
pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
pLayerCfg.FBStartAdress = 0xd0000000;
pLayerCfg.ImageWidth = 240;
pLayerCfg.ImageHeight = 320;
pLayerCfg.Backcolor.Blue = 0;
pLayerCfg.Backcolor.Green = 255;
pLayerCfg.Backcolor.Red = 0;
if (HAL_LTDC_ConfigLayer(&hltdc, &pLayerCfg, 0) != HAL_OK)
{
Error_Handler();
}
}
void lcd_initialize( void ) {
ili9341_Init( );
}
/**
* @brief LCD configuration.
* @note This function Configure tha LTDC peripheral :
* 1) Configure the Pixel Clock for the LCD
* 2) Configure the LTDC Timing and Polarity
* 3) Configure the LTDC Layer 2 :
* - RGB565 as pixel format
* - The frame buffer is located at internal RAM : The output of DMA2D transfer
* - The Layer size configuration : 240x160
* @retval
* None
*/
static void LCD_Config(void)
{
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
LTDC_LayerCfgTypeDef pLayerCfg;
static LTDC_HandleTypeDef LtdcHandle;
/* Initializaton of ILI9341 component*/
ili9341_Init();
/* LTDC Initialization -------------------------------------------------------*/
/* Polarity configuration */
/* Initialize the horizontal synchronization polarity as active low */
LtdcHandle.Init.HSPolarity = LTDC_HSPOLARITY_AL;
/* Initialize the vertical synchronization polarity as active low */
LtdcHandle.Init.VSPolarity = LTDC_VSPOLARITY_AL;
/* Initialize the data enable polarity as active low */
LtdcHandle.Init.DEPolarity = LTDC_DEPOLARITY_AL;
/* Initialize the pixel clock polarity as input pixel clock */
LtdcHandle.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
/* Timing configuration (Typical configuration from ILI9341 datasheet)
HSYNC=10 (9+1)
HBP=20 (29-10+1)
ActiveW=240 (269-20-10+1)
HFP=10 (279-240-20-10+1)
VSYNC=2 (1+1)
VBP=2 (3-2+1)
ActiveH=320 (323-2-2+1)
VFP=4 (327-320-2-2+1)
*/
/* Timing configuration */
/* Horizontal synchronization width = Hsync - 1 */
LtdcHandle.Init.HorizontalSync = 9;
/* Vertical synchronization height = Vsync - 1 */
LtdcHandle.Init.VerticalSync = 1;
/* Accumulated horizontal back porch = Hsync + HBP - 1 */
LtdcHandle.Init.AccumulatedHBP = 29;
/* Accumulated vertical back porch = Vsync + VBP - 1 */
LtdcHandle.Init.AccumulatedVBP = 3;
/* Accumulated active width = Hsync + HBP + Active Width - 1 */
LtdcHandle.Init.AccumulatedActiveH = 323;
/* Accumulated active height = Vsync + VBP + Active Heigh - 1 */
LtdcHandle.Init.AccumulatedActiveW = 269;
/* Total height = Vsync + VBP + Active Heigh + VFP - 1 */
LtdcHandle.Init.TotalHeigh = 327;
/* Total width = Hsync + HBP + Active Width + HFP - 1 */
LtdcHandle.Init.TotalWidth = 279;
/* LCD clock configuration */
/* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz */
/* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN = 192 Mhz */
/* PLLLCDCLK = PLLSAI_VCO Output/PLLSAIR = 192/4 = 48 Mhz */
/* LTDC clock frequency = PLLLCDCLK / RCC_PLLSAIDIVR_8 = 48/8 = 6 Mhz */
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LTDC;
PeriphClkInitStruct.PLLSAI.PLLSAIN = 192;
PeriphClkInitStruct.PLLSAI.PLLSAIR = 4;
PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_8;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
/* Configure R,G,B component values for LCD background color */
LtdcHandle.Init.Backcolor.Blue = 0;
LtdcHandle.Init.Backcolor.Green = 0;
LtdcHandle.Init.Backcolor.Red = 0;
LtdcHandle.Instance = LTDC;
/* Layer1 Configuration ------------------------------------------------------*/
/* Windowing configuration */
/*
WindowX0 = Horizontal start
WindowX1 = Horizontal stop
WindowY0 = Vertical start
WindowY1 = Vertical stop
*/
pLayerCfg.WindowX0 = 0;
pLayerCfg.WindowX1 = 240;
pLayerCfg.WindowY0 = 80;
pLayerCfg.WindowY1 = 240;
/* Pixel Format configuration*/
pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
/* Start Address configuration : frame buffer is located at FLASH memory */
pLayerCfg.FBStartAdress = (uint32_t)&aBlendedImage;
/* Alpha constant (255 totally opaque) */
pLayerCfg.Alpha = 255;
/* Default Color configuration (configure A,R,G,B component values) */
pLayerCfg.Alpha0 = 0;
pLayerCfg.Backcolor.Blue = 0;
pLayerCfg.Backcolor.Green = 0;
pLayerCfg.Backcolor.Red = 0;
/* Configure blending factors */
pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;
pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
/* Configure the number of lines and number of pixels per line */
pLayerCfg.ImageWidth = 240;
pLayerCfg.ImageHeight = 160;
/* Configure the LTDC */
if(HAL_LTDC_Init(&LtdcHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Configure the Layer*/
if(HAL_LTDC_ConfigLayer(&LtdcHandle, &pLayerCfg, 1) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
}
/**
* @brief LCD Configuration.
* @note This function Configure the LTDC peripheral :
* 1) Configure the Pixel Clock for the LCD
* 2) Configure the LTDC Timing and Polarity
* 3) Configure the LTDC Layer 1 :
* - direct color (RGB565) as pixel format
* - The frame buffer is located at FLASH memory
* - The Layer size configuration : 240x160
* 4) Configure the LTDC Layer 2 :
* - direct color (RGB565) as pixel format
* - The frame buffer is located at FLASH memory
* - The Layer size configuration : 240x160
* @retval
* None
*/
static void LCD_Config(void)
{
LTDC_LayerCfgTypeDef pLayerCfg;
LTDC_LayerCfgTypeDef pLayerCfg1;
/* Initialization of ILI9341 component*/
ili9341_Init();
/* LTDC Initialization -------------------------------------------------------*/
/* Polarity configuration */
/* Initialize the horizontal synchronization polarity as active low */
LtdcHandle.Init.HSPolarity = LTDC_HSPOLARITY_AL;
/* Initialize the vertical synchronization polarity as active low */
LtdcHandle.Init.VSPolarity = LTDC_VSPOLARITY_AL;
/* Initialize the data enable polarity as active low */
LtdcHandle.Init.DEPolarity = LTDC_DEPOLARITY_AL;
/* Initialize the pixel clock polarity as input pixel clock */
LtdcHandle.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
/* Timing configuration (Typical configuration from ILI9341 datasheet)
HSYNC=10 (9+1)
HBP=20 (29-10+1)
ActiveW=240 (269-20-10+1)
HFP=10 (279-240-20-10+1)
VSYNC=2 (1+1)
VBP=2 (3-2+1)
ActiveH=320 (323-2-2+1)
VFP=4 (327-320-2-2+1)
*/
/* Timing configuration */
/* Horizontal synchronization width = Hsync - 1 */
LtdcHandle.Init.HorizontalSync = 9;
/* Vertical synchronization height = Vsync - 1 */
LtdcHandle.Init.VerticalSync = 1;
/* Accumulated horizontal back porch = Hsync + HBP - 1 */
LtdcHandle.Init.AccumulatedHBP = 29;
/* Accumulated vertical back porch = Vsync + VBP - 1 */
LtdcHandle.Init.AccumulatedVBP = 3;
/* Accumulated active width = Hsync + HBP + Active Width - 1 */
LtdcHandle.Init.AccumulatedActiveH = 323;
/* Accumulated active height = Vsync + VBP + Active Heigh - 1 */
LtdcHandle.Init.AccumulatedActiveW = 269;
/* Total height = Vsync + VBP + Active Heigh + VFP - 1 */
LtdcHandle.Init.TotalHeigh = 327;
/* Total width = Hsync + HBP + Active Width + HFP - 1 */
LtdcHandle.Init.TotalWidth = 279;
/* Configure R,G,B component values for LCD background color */
LtdcHandle.Init.Backcolor.Blue = 0;
LtdcHandle.Init.Backcolor.Green = 0;
LtdcHandle.Init.Backcolor.Red = 0;
LtdcHandle.Instance = LTDC;
/* Layer1 Configuration ------------------------------------------------------*/
/* Windowing configuration */
pLayerCfg.WindowX0 = 0;
pLayerCfg.WindowX1 = 240;
pLayerCfg.WindowY0 = 0;
pLayerCfg.WindowY1 = 160;
/* Pixel Format configuration*/
pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
/* Start Address configuration : frame buffer is located at FLASH memory */
pLayerCfg.FBStartAdress = (uint32_t)&ST_LOGO_1;
/* Alpha constant (255 totally opaque) */
pLayerCfg.Alpha = 255;
/* Default Color configuration (configure A,R,G,B component values) */
pLayerCfg.Alpha0 = 0;
pLayerCfg.Backcolor.Blue = 0;
pLayerCfg.Backcolor.Green = 0;
pLayerCfg.Backcolor.Red = 0;
/* Configure blending factors */
pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
/* Configure the number of lines and number of pixels per line */
pLayerCfg.ImageWidth = 240;
pLayerCfg.ImageHeight = 160;
/* Layer2 Configuration ------------------------------------------------------*/
/* Windowing configuration */
pLayerCfg1.WindowX0 = 0;
pLayerCfg1.WindowX1 = 240;
pLayerCfg1.WindowY0 = 160;
pLayerCfg1.WindowY1 = 320;
/* Pixel Format configuration*/
pLayerCfg1.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
/* Start Address configuration : frame buffer is located at FLASH memory */
pLayerCfg1.FBStartAdress = (uint32_t)&ST_LOGO_2;
/* Alpha constant (255 totally opaque) */
pLayerCfg1.Alpha = 200;
/* Default Color configuration (configure A,R,G,B component values) */
pLayerCfg1.Alpha0 = 0;
pLayerCfg1.Backcolor.Blue = 0;
pLayerCfg1.Backcolor.Green = 0;
pLayerCfg1.Backcolor.Red = 0;
/* Configure blending factors */
pLayerCfg1.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
pLayerCfg1.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
/* Configure the number of lines and number of pixels per line */
pLayerCfg1.ImageWidth = 240;
pLayerCfg1.ImageHeight = 160;
/* Configure the LTDC */
if(HAL_LTDC_Init(&LtdcHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Configure the Background Layer*/
if(HAL_LTDC_ConfigLayer(&LtdcHandle, &pLayerCfg, 0) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Configure the Foreground Layer*/
if(HAL_LTDC_ConfigLayer(&LtdcHandle, &pLayerCfg1, 1) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
}
