DMA2D Pixel format conversion

pfc_dma2d.c

/* Private variables -------------------------------------------------------- */
DMA2D_HandleTypeDef hdma2d;

/* Private function prototypes ---------------------------------------------- */
static void DMA2D_Init(void);
static void DMA2D_Convert(void);

void DMA2D_Init(void)
{
  HAL_StatusTypeDef status;

  hdma2d.Instance = DMA2D;
  hdma2d.Init.Mode           = DMA2D_M2M_PFC;
  hdma2d.Init.ColorMode      = DMA2D_OUTPUT_RGB8888 ;
  hdma2d.Init.OutputOffset   = 0U;
  hdma2d.Init.AlphaInverted  = DMA2D_REGULAR_ALPHA;
  hdma2d.Init.RedBlueSwap    = DMA2D_RB_REGULAR;
  hdma2d.Init.BytesSwap      = DMA2D_BYTES_REGULAR;
  hdma2d.Init.LineOffsetMode = DMA2D_LOM_PIXELS;
  status = HAL_DMA2D_Init(&hdma2d);
  if (status != HAL_OK) {
    Error_Handler();
  }

  hdma2d.LayerCfg[1].InputOffset       = 0x0;
  hdma2d.LayerCfg[1].InputColorMode    = DMA2D_INPUT_RGB565;
  hdma2d.LayerCfg[1].AlphaMode         = DMA2D_NO_MODIF_ALPHA;
  hdma2d.LayerCfg[1].InputAlpha        = 0xFF;
  hdma2d.LayerCfg[1].AlphaInverted     = DMA2D_REGULAR_ALPHA;
  hdma2d.LayerCfg[1].RedBlueSwap       = DMA2D_RB_REGULAR;
  hdma2d.LayerCfg[1].ChromaSubSampling = DMA2D_NO_CSS;
  status = HAL_DMA2D_ConfigLayer(&hdma2d, 1);
  if (status != HAL_OK) {
    Error_Handler();
  }
}

void DMA2D_Convert(void)
{
  HAL_StatusTypeDef status;
  status = HAL_DMA2D_Start(&hdma2d, (uint32_t)pImgData_rgb565,
                        (uint32_t)pImgData_rgb8888, 320, 240);
  if (status != HAL_OK) {
    Error_Handler();
  }

  status = HAL_DMA2D_PollForTransfer(&hdma2d, 1000);
  if (status != HAL_OK) {
    Error_Handler();
  }
}