6.运行STM32N6的LTDC驱动LCD显示：

STM32N6支持XGA(1024x768)分辨率显示，有Chrom-ART、Chrom-GRC、NeoChrom GPU、JPEG codec等外设提高图像性能，简单使用LTDC驱动一下屏幕。查看原理图，确认引脚情况。

配置LTDC功能，设置在FSBL初始化，显示模式为RGB5656

复制

/**

  * [url=home.php?mod=space&uid=247401]@brief[/url] LTDC Initialization Function

  * @param None

  * @retval None

  */

static void MX_LTDC_Init(void)

{



  /* USER CODE BEGIN LTDC_Init 0 */



  /* USER CODE END LTDC_Init 0 */



  LTDC_LayerCfgTypeDef pLayerCfg = {0};



  /* USER CODE BEGIN LTDC_Init 1 */



  /* USER CODE END LTDC_Init 1 */

  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 = 4;

  hltdc.Init.VerticalSync = 4;

  hltdc.Init.AccumulatedHBP = 12;

  hltdc.Init.AccumulatedVBP = 12;

  hltdc.Init.AccumulatedActiveW = 812;

  hltdc.Init.AccumulatedActiveH = 492;

  hltdc.Init.TotalWidth = 820;

  hltdc.Init.TotalHeigh = 500;

  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 = 156;

  pLayerCfg.WindowY0 = 0;

  pLayerCfg.WindowY1 = 129;

  pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;

  pLayerCfg.Alpha = 255;

  pLayerCfg.Alpha0 = 0;

  pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;

  pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;

  pLayerCfg.FBStartAdress = 0;

  pLayerCfg.ImageWidth = 156;

  pLayerCfg.ImageHeight = 129;

  pLayerCfg.Backcolor.Blue = 255;

  pLayerCfg.Backcolor.Green = 0;

  pLayerCfg.Backcolor.Red = 0;

  if (HAL_LTDC_ConfigLayer(&hltdc, &pLayerCfg, 0) != HAL_OK)

  {

    Error_Handler();

  }

  /* USER CODE BEGIN LTDC_Init 2 */

    RIMC_MasterConfig_t RIMC_master = {0};

    RIMC_master.MasterCID = RIF_CID_1;

    RIMC_master.SecPriv = RIF_ATTRIBUTE_SEC | RIF_ATTRIBUTE_PRIV;

    HAL_RIF_RIMC_ConfigMasterAttributes(RIF_MASTER_INDEX_LTDC1 , &RIMC_master);



    HAL_RIF_RISC_SetSlaveSecureAttributes(RIF_RISC_PERIPH_INDEX_LTDCL1 , RIF_ATTRIBUTE_SEC | RIF_ATTRIBUTE_PRIV);

  /* USER CODE END LTDC_Init 2 */



}

设置显示内容的图片，在主循环中每隔1s切换显示方向

具体显示效果如下：

看动图效果，刷新率还是蛮高的，不过图有点小，好像也是能让刷新率增加，后续楼主可以刷个全屏的玩玩