我使用
STM32L4R9ZGT6,移植了UCOSIII 和 STEMWIN,参考了正点原子的STM429
开发板，实验2，文本显示，UCOSIII STEMWIN都移植了，显示缓冲用的是内部RAM ，没有使用DMA2D,直接LTDC驱动了，程序如下
void TFT_LCD_Init(void)
{
LTDC_HandleTypeDef hltdc;
LTDC_LayerCfgTypeDef pLayerCfg = {0};
LTDC_LayerCfgTypeDef pLayerCfg1 = {0};
/* USER CODE BEGIN LTDC_Init 0 */
Ltdc_GPIO_Init();
// __HAL_RCC_DMA2D_CLK_ENABLE(); // 源地址-> 目的地址图像格式混合格式
__HAL_RCC_LTDC_CLK_ENABLE(); // 产生LCD需要的各种时钟
/* USER CODE END LTDC_Init 0 */
/* USER CODE BEGIN LTDC_Init 1 */
// USER CODE END LTDC_Init 1
hltdc.Instance = LTDC;
// Polarity configura
tion
// Initialize the horizontal synchronization polarity as active low
hltdc.Init.HSPolarity = LTDC_HSPOLARITY_AL;
// Initialize the vertical synchronization polarity as active low
hltdc.Init.VSPolarity = LTDC_VSPOLARITY_AL;
// Initialize the data enable polarity as active low
hltdc.Init.DEPolarity = LTDC_DEPOLARITY_AL;
// Initialize the pixel clock polarity as input pixel clock
hltdc.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
// The RK043FN48H LCD 480x272 is selected
// Timing Configuration
hltdc.Init.HorizontalSync = (TM043NDH02_HSYNC - 1);
hltdc.Init.VerticalSync = (TM043NDH02_VSYNC - 1);
hltdc.Init.AccumulatedHBP = (TM043NDH02_HSYNC + TM043NDH02_HBP - 1);
hltdc.Init.AccumulatedVBP = (TM043NDH02_VSYNC + TM043NDH02_VBP - 1);
hltdc.Init.AccumulatedActiveW = (TM043NDH02_WIDTH + TM043NDH02_HSYNC + TM043NDH02_HBP - 1);
hltdc.Init.AccumulatedActiveH = (TM043NDH02_HEIGHT + TM043NDH02_VSYNC + TM043NDH02_VBP - 1);
hltdc.Init.TotalWidth = (TM043NDH02_WIDTH + TM043NDH02_HSYNC + TM043NDH02_HBP + TM043NDH02_HFP - 1);
hltdc.Init.TotalHeigh = (TM043NDH02_HEIGHT + TM043NDH02_VSYNC + TM043NDH02_VBP + TM043NDH02_VFP - 1);
// Configure R,G,B component values for LCD background color : all black background
hltdc.Init.Backcolor.Blue = 0;
hltdc.Init.Backcolor.Green = 0;
hltdc.Init.Backcolor.Red = 0;
// Configure the LTDC
if (HAL_LTDC_Init( hltdc) != HAL_OK)
{
Error_Handler();
}
// Layer1 Configuration ------------------------------------------------------
// Windowing configuration
// In this case all the active display area is used to display a picture then :
// Horizontal start = horizontal synchronization + Horizontal back porch = 43
// Vertical start = vertical synchronization + vertical back porch = 12
// Horizontal stop = Horizontal start + window width -1 = 43 + 480 -1
// Vertical stop = Vertical start + window height -1 = 12 + 272 -1
pLayerCfg.WindowX0 = 0;
pLayerCfg.WindowX1 = 0;
pLayerCfg.WindowY0 = 0;
pLayerCfg.WindowY1 = 0;
pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
pLayerCfg.Alpha = 0;
pLayerCfg.Alpha0 = 0;
pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;
pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
pLayerCfg.FBStartAdress = 0;
pLayerCfg.ImageWidth = 0;
pLayerCfg.ImageHeight = 0;
pLayerCfg.Backcolor.Blue = 0;
pLayerCfg.Backcolor.Green = 0;
pLayerCfg.Backcolor.Red = 0;
if (HAL_LTDC_ConfigLayer( hltdc, pLayerCfg, LTDC_LAYER_1) != HAL_OK)
{
Error_Handler();
}
pLayerCfg1.WindowX0 = 0;
pLayerCfg1.WindowX1 = 480;
pLayerCfg1.WindowY0 = 0;
pLayerCfg1.WindowY1 = 272;
pLayerCfg1.PixelFormat = LTDC_PIXEL_FORMAT_L8;
// Alpha constant (255 == totally opaque)
pLayerCfg1.Alpha = 255;
// Default Color configuration (configure A,R,G,B component values) : no background color
pLayerCfg1.Alpha0 = 255;
pLayerCfg1.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;
pLayerCfg1.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
pLayerCfg1.FBStartAdress = (uint32_t) RGBL8_480x272;
pLayerCfg1.ImageWidth = 480;
pLayerCfg.ImageHeight = 272;
pLayerCfg1.Backcolor.Blue = 0;
pLayerCfg1.Backcolor.Green = 0;
pLayerCfg1.Backcolor.Red = 0;
if (HAL_LTDC_ConfigLayer( hltdc, pLayerCfg1, LTDC_LAYER_2) != HAL_OK)
{
Error_Handler();
}
//##-2- CLUT Configuration ################################################
HAL_LTDC_ConfigCLUT( hltdc, (uint32_t *)L8_480x272_CLUT, 256, LTDC_LAYER_2);
if (HAL_LTDC_SetPitch( hltdc, 0, 0) != HAL_OK)
{
Error_Handler();
}
if (HAL_LTDC_SetPitch( hltdc, 0, 1) != HAL_OK)
{
Error_Handler();
}
// USER CODE BEGIN LTDC_Init 2
// USER CODE END LTDC_Init 2
//##-3- Enable CLUT For Layer 1 ############################################
HAL_LTDC_EnableCLUT( hltdc, LTDC_LAYER_2);
// Assert backlight LCD_BL_CTRL pin
HAL_GPIO_WritePin(GPIOB, LCD_On_Off, GPIO_PIN_SET);//
}
这个是直接初始化LTDC的层2
在显示缓冲区RGBL8_480x272里修改数据，能变化画面
然后移植 STEMWIN, 没有用层，
程序如下
//设置EMWIN内存大小
#define GUI_NUMBYTES (20*1024)
#define GUI_BLOCKSIZE 0x80 //块大小
//GUI_X_Config
//初始化的时候调用,用来设置emwin所使用的内存
void GUI_X_Config(void) {
U32 *aMemory = mymalloc(SRAMIN,GUI_NUMBYTES); //从内部RAM中分配GUI_NUMBYTES字节的内存
GUI_ALLOC_AssignMemory((U32 *)aMemory, GUI_NUMBYTES); //为存储管理系统分配一个存储块
GUI_ALLOC_SetAvBlockSize(GUI_BLOCKSIZE); //设置存储快的平均尺寸,该区越大,可用的存储快数量越少
GUI_SetDefaultFont( GUI_Font16B_1); //设置默认字体
}
void LCD_X_Config(void)
{
//设置第一层
GUI_DEVICE_CreateAndLink(GUIDRV_LIN_8,GUICC_M332,0,0);
GUI_SelectLayer(0); // 设置层0
LCD_SetSizeEx(0,XSIZE_PHYS,YSIZE_PHYS);
LCD_SetVSizeEx(0,XSIZE_PHYS,YSIZE_PHYS);
LCD_SetVRAMAddrEx(0, RGBL8_480x272);
}
应用程序如下
GUI_Init(); //STemWin初始化
WM_MULTIBUF_Enable(1); // 开启stemwin 多缓冲，RGB屏可能会用到
WM_SetCreateFlags(WM_CF_MEMDEV); //Use memory devices on all windows to avoid flicker
WM_SetCallback(WM_HBKWIN, _cbBkWindow); //Set callback for background window
GUI_SetBkColor(GUI_RED);
GUI_Clear();
GUI_SetBkColor(GUI_BLACK);
GUI_Clear();
GUI_SetColor(GUI_WHITE);
GUI_DispStringAt("Hello!", 0, 0);
GUI_Delay(10);
显示缓冲区使用的8位L8 ,
GUI_SetBkColor(GUI_RED);
GUI_Clear(); 显示缓冲区填充的是0xe0 红色
GUI_SetBkColor(GUI_BLACK);
GUI_Clear(); 显示缓冲区填充的是0x00 黑色
GUI_SetColor(GUI_WHITE);
GUI_DispStringAt("Hello!", 0, 0); 显示不出来字符，显示缓冲区没有变化，都是0x00 怎么回事情？
举报
