Hi Everyone,
I’m working with a custom 24-bit display on an STM32H757XIH6 MCU.
I’ve configured the LTDC with pixel format ARGB8888.
When I test with solid fill colors, everything displays perfectly.
However, when I try to display an image using TouchGFX Designer, the output appears as repeated, tiled, and shifted blocks instead of the correct image.
I’ve attached a photo of the display for reference.
Has anyone faced this issue before, or could guide me on how to resolve it please
?
Thank you in Advance
/* LTDC init function */
void MX_LTDC_Init(void)
{
/* USER CODE BEGIN LTDC_Init 0 */
HAL_GPIO_WritePin(LCD_BL_GPIO_Port, LCD_BL_Pin, GPIO_PIN_SET);
/* 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 = 19;
hltdc.Init.VerticalSync = 2;
hltdc.Init.AccumulatedHBP = 179;
hltdc.Init.AccumulatedVBP = 25;
hltdc.Init.AccumulatedActiveW = 1203;
hltdc.Init.AccumulatedActiveH = 625;
hltdc.Init.TotalWidth = 1363;
hltdc.Init.TotalHeigh = 637;
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 = 1024;
pLayerCfg.WindowY0 = 0;
pLayerCfg.WindowY1 = 600;
pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_ARGB8888;
pLayerCfg.Alpha = 255;
pLayerCfg.Alpha0 = 255;
pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;
pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
pLayerCfg.FBStartAdress = 0xD0000000;
pLayerCfg.ImageWidth = 1024;
pLayerCfg.ImageHeight = 600;
pLayerCfg.Backcolor.Blue = 0;
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 */
/* USER CODE END LTDC_Init 2 */
}
