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/* IO¿Ú³õʼ»¯ */ LCD_GPIOInit(); LCD_DisplayOff(); /* ʹÄÜLCDʱÖÓ */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_LTDC, ENABLE); /* ʹÄÜDMAʧ×Ù*/ RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2D, ENABLE); /* ˮƽͬ²½ÐźÅ---µÍµçƽÓÐЧ */ LTDC_InitStruct.LTDC_HSPolarity = LTDC_HSPolarity_AL; /* ´¹Ö±Í¬²½ÐźÅ---µÍµçƽÓÐЧ */ LTDC_InitStruct.LTDC_VSPolarity = LTDC_VSPolarity_AL; /* Êý¾ÝʹÄÜÐźÅ---µÍµçƽÓÐЧ */ LTDC_InitStruct.LTDC_DEPolarity = LTDC_DEPolarity_AL; /* ÏñËØʱÖÓÅäÖÃ--- */ LTDC_InitStruct.LTDC_PCPolarity = LTDC_PCPolarity_IPC; /* LCD±³¹âÉèÖà */ LTDC_InitStruct.LTDC_BackgroundRedValue = 0; LTDC_InitStruct.LTDC_BackgroundGreenValue = 0; LTDC_InitStruct.LTDC_BackgroundBlueValue = 0; /* **************************************************************************** *PLLSAI_VCO = HSE*PLLSAI_N / PLL_M = 8 * 192 / 8 = 192MHz *PLLLCDCLK = PLLSAI_VCO / PLLSAI_R = 192 / 3 = 64 Mhz *LTDC clock frequency = PLLLCDCLK / RCC_PLLSAIDivR = 64 / 8 = 8 Mhz **************************************************************************** */ RCC_PLLSAIConfig(250, 2, 8);//RCC_PLLSAIConfig(192, 7, 4); RCC_LTDCCLKDivConfig(RCC_PLLSAIDivR_Div4); /* ʹÄÜPLLSAIʱÖÓ */ RCC_PLLSAICmd(ENABLE); /* µÈ´ýPLLSAIʱÖÓ */ while(RCC_GetFlagStatus(RCC_FLAG_PLLSAIRDY) == RESET){} //-- Timing configuration --// //-- Configure horizontal synchronization width --// /* */ LTDC_InitStruct.LTDC_HorizontalSync = HSYNC; /* */ LTDC_InitStruct.LTDC_VerticalSync = VSYNC; /* */ LTDC_InitStruct.LTDC_AccumulatedHBP = HBP; /* */ LTDC_InitStruct.LTDC_AccumulatedVBP = VBP; /* */ LTDC_InitStruct.LTDC_AccumulatedActiveW = LCDX + HBP; /* */ LTDC_InitStruct.LTDC_AccumulatedActiveH = LCDY + VBP; /* */ LTDC_InitStruct.LTDC_TotalWidth = LCDX + HBP + HFP; /* */ LTDC_InitStruct.LTDC_TotalHeigh = LCDY + VBP + VFP; LTDC_Init(<DC_InitStruct); LTDC_Layer_InitStruct.LTDC_HorizontalStart = HBP+1; LTDC_Layer_InitStruct.LTDC_HorizontalStop = (LCDX + HBP); LTDC_Layer_InitStruct.LTDC_VerticalStart = VBP+1; LTDC_Layer_InitStruct.LTDC_VerticalStop = (LCDY + VBP); /* Pixel Format configuration*/ LTDC_Layer_InitStruct.LTDC_PixelFormat = LTDC_Pixelformat_RGB888; /* 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 = 0x0000ff; LTDC_Layer_InitStruct.LTDC_DefaultColorGreen = 0; LTDC_Layer_InitStruct.LTDC_DefaultColorRed = 0; LTDC_Layer_InitStruct.LTDC_DefaultColorAlpha = 0; /* Configure blending factors */ LTDC_Layer_InitStruct.LTDC_BlendingFactor_1 = LTDC_BlendingFactor1_CA; LTDC_Layer_InitStruct.LTDC_BlendingFactor_2 = LTDC_BlendingFactor2_CA; /* 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 = ((LCDX * 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 = (LCDX * 2); /* configure the number of lines */ LTDC_Layer_InitStruct.LTDC_CFBLineNumber = LCDY; /* Input Address configuration */ LTDC_Layer_InitStruct.LTDC_CFBStartAdress = LCD_FRAME_BUFFER; LTDC_LayerInit(LTDC_Layer1, <DC_Layer_InitStruct); /* Configure Layer2 */ LTDC_Layer_InitStruct.LTDC_CFBStartAdress = LCD_FRAME_BUFFER + BUFFER_OFFSET; LTDC_Layer_InitStruct.LTDC_BlendingFactor_1 = LTDC_BlendingFactor1_PAxCA; LTDC_Layer_InitStruct.LTDC_BlendingFactor_2 = LTDC_BlendingFactor2_PAxCA; LTDC_LayerInit(LTDC_Layer2, <DC_Layer_InitStruct); LTDC_ReloadConfig(LTDC_IMReload); /* Enable foreground & background Layers */ LTDC_LayerCmd(LTDC_Layer1, ENABLE); // LTDC_LayerCmd(LTDC_Layer2, ENABLE); LTDC_ReloadConfig(LTDC_IMReload); LCD_DisplayOn(); 试过驱动800 X480的TFT,写数据只显示到320行,驱动800 X 600 的TFT数据像是到400行,请问是什么问题???????????????,用SDROM做内存显示 |
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RGB888模式要修改为下面的吧，
从手册上看的2个图看
应该为下面的公式吧，