stm32l4xx_hal_ltdc.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32l4xx_hal.h"

#ifdef HAL_LTDC_MODULE_ENABLED

#if defined (LTDC)

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void LTDC_SetConfig(LTDC_HandleTypeDef *hltdc, LTDC_LayerCfgTypeDef *pLayerCfg, uint32_t LayerIdx);
/* Private functions ---------------------------------------------------------*/

HAL_StatusTypeDef HAL_LTDC_Init(LTDC_HandleTypeDef *hltdc)
{
  uint32_t tmp, tmp1;

  /* Check the LTDC peripheral state */
  if (hltdc == NULL)
  {
    return HAL_ERROR;
  }

  /* Check function parameters */
  assert_param(IS_LTDC_ALL_INSTANCE(hltdc->Instance));
  assert_param(IS_LTDC_HSYNC(hltdc->Init.HorizontalSync));
  assert_param(IS_LTDC_VSYNC(hltdc->Init.VerticalSync));
  assert_param(IS_LTDC_AHBP(hltdc->Init.AccumulatedHBP));
  assert_param(IS_LTDC_AVBP(hltdc->Init.AccumulatedVBP));
  assert_param(IS_LTDC_AAH(hltdc->Init.AccumulatedActiveH));
  assert_param(IS_LTDC_AAW(hltdc->Init.AccumulatedActiveW));
  assert_param(IS_LTDC_TOTALH(hltdc->Init.TotalHeigh));
  assert_param(IS_LTDC_TOTALW(hltdc->Init.TotalWidth));
  assert_param(IS_LTDC_HSPOL(hltdc->Init.HSPolarity));
  assert_param(IS_LTDC_VSPOL(hltdc->Init.VSPolarity));
  assert_param(IS_LTDC_DEPOL(hltdc->Init.DEPolarity));
  assert_param(IS_LTDC_PCPOL(hltdc->Init.PCPolarity));

#if (USE_HAL_LTDC_REGISTER_CALLBACKS == 1)
  if (hltdc->State == HAL_LTDC_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    hltdc->Lock = HAL_UNLOCKED;

    /* Reset the LTDC callback to the legacy weak callbacks */
    hltdc->LineEventCallback   = HAL_LTDC_LineEventCallback;    /* Legacy weak LineEventCallback    */
    hltdc->ReloadEventCallback = HAL_LTDC_ReloadEventCallback;  /* Legacy weak ReloadEventCallback  */
    hltdc->ErrorCallback       = HAL_LTDC_ErrorCallback;        /* Legacy weak ErrorCallback        */

    if (hltdc->MspInitCallback == NULL)
    {
      hltdc->MspInitCallback = HAL_LTDC_MspInit;
    }
    /* Init the low level hardware */
    hltdc->MspInitCallback(hltdc);
  }
#else
  if (hltdc->State == HAL_LTDC_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    hltdc->Lock = HAL_UNLOCKED;
    /* Init the low level hardware */
    HAL_LTDC_MspInit(hltdc);
  }
#endif /* USE_HAL_LTDC_REGISTER_CALLBACKS */

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Configure the HS, VS, DE and PC polarity */
  hltdc->Instance->GCR &= ~(LTDC_GCR_HSPOL | LTDC_GCR_VSPOL | LTDC_GCR_DEPOL | LTDC_GCR_PCPOL);
  hltdc->Instance->GCR |= (uint32_t)(hltdc->Init.HSPolarity | hltdc->Init.VSPolarity | \
                                     hltdc->Init.DEPolarity | hltdc->Init.PCPolarity);

  /* Set Synchronization size */
  hltdc->Instance->SSCR &= ~(LTDC_SSCR_VSH | LTDC_SSCR_HSW);
  tmp = (hltdc->Init.HorizontalSync << 16U);
  hltdc->Instance->SSCR |= (tmp | hltdc->Init.VerticalSync);

  /* Set Accumulated Back porch */
  hltdc->Instance->BPCR &= ~(LTDC_BPCR_AVBP | LTDC_BPCR_AHBP);
  tmp = (hltdc->Init.AccumulatedHBP << 16U);
  hltdc->Instance->BPCR |= (tmp | hltdc->Init.AccumulatedVBP);

  /* Set Accumulated Active Width */
  hltdc->Instance->AWCR &= ~(LTDC_AWCR_AAH | LTDC_AWCR_AAW);
  tmp = (hltdc->Init.AccumulatedActiveW << 16U);
  hltdc->Instance->AWCR |= (tmp | hltdc->Init.AccumulatedActiveH);

  /* Set Total Width */
  hltdc->Instance->TWCR &= ~(LTDC_TWCR_TOTALH | LTDC_TWCR_TOTALW);
  tmp = (hltdc->Init.TotalWidth << 16U);
  hltdc->Instance->TWCR |= (tmp | hltdc->Init.TotalHeigh);

  /* Set the background color value */
  tmp = ((uint32_t)(hltdc->Init.Backcolor.Green) << 8U);
  tmp1 = ((uint32_t)(hltdc->Init.Backcolor.Red) << 16U);
  hltdc->Instance->BCCR &= ~(LTDC_BCCR_BCBLUE | LTDC_BCCR_BCGREEN | LTDC_BCCR_BCRED);
  hltdc->Instance->BCCR |= (tmp1 | tmp | hltdc->Init.Backcolor.Blue);

  /* Enable the Transfer Error and FIFO underrun interrupts */
  __HAL_LTDC_ENABLE_IT(hltdc, LTDC_IT_TE | LTDC_IT_FU);

  /* Enable LTDC by setting LTDCEN bit */
  __HAL_LTDC_ENABLE(hltdc);

  /* Initialize the error code */
  hltdc->ErrorCode = HAL_LTDC_ERROR_NONE;

  /* Initialize the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_DeInit(LTDC_HandleTypeDef *hltdc)
{
#if (USE_HAL_LTDC_REGISTER_CALLBACKS == 1)
  if (hltdc->MspDeInitCallback == NULL)
  {
    hltdc->MspDeInitCallback = HAL_LTDC_MspDeInit;
  }
  /* DeInit the low level hardware */
  hltdc->MspDeInitCallback(hltdc);
#else
  /* DeInit the low level hardware */
  HAL_LTDC_MspDeInit(hltdc);
#endif /* USE_HAL_LTDC_REGISTER_CALLBACKS */

  /* Initialize the error code */
  hltdc->ErrorCode = HAL_LTDC_ERROR_NONE;

  /* Initialize the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_RESET;

  /* Release Lock */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

__weak void HAL_LTDC_MspInit(LTDC_HandleTypeDef *hltdc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hltdc);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_LTDC_MspInit could be implemented in the user file
   */
}

__weak void HAL_LTDC_MspDeInit(LTDC_HandleTypeDef *hltdc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hltdc);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_LTDC_MspDeInit could be implemented in the user file
   */
}

#if (USE_HAL_LTDC_REGISTER_CALLBACKS == 1)

HAL_StatusTypeDef HAL_LTDC_RegisterCallback(LTDC_HandleTypeDef *hltdc, HAL_LTDC_CallbackIDTypeDef CallbackID, pLTDC_CallbackTypeDef pCallback)
{
  HAL_StatusTypeDef status = HAL_OK;

  if (pCallback == NULL)
  {
    /* Update the error code */
    hltdc->ErrorCode |= HAL_LTDC_ERROR_INVALID_CALLBACK;

    return HAL_ERROR;
  }
  /* Process locked */
  __HAL_LOCK(hltdc);

  if (hltdc->State == HAL_LTDC_STATE_READY)
  {
    switch (CallbackID)
    {
      case HAL_LTDC_LINE_EVENT_CB_ID :
        hltdc->LineEventCallback = pCallback;
        break;

      case HAL_LTDC_RELOAD_EVENT_CB_ID :
        hltdc->ReloadEventCallback = pCallback;
        break;

      case HAL_LTDC_ERROR_CB_ID :
        hltdc->ErrorCallback = pCallback;
        break;

      case HAL_LTDC_MSPINIT_CB_ID :
        hltdc->MspInitCallback = pCallback;
        break;

      case HAL_LTDC_MSPDEINIT_CB_ID :
        hltdc->MspDeInitCallback = pCallback;
        break;

      default :
        /* Update the error code */
        hltdc->ErrorCode |= HAL_LTDC_ERROR_INVALID_CALLBACK;
        /* Return error status */
        status =  HAL_ERROR;
        break;
    }
  }
  else if (hltdc->State == HAL_LTDC_STATE_RESET)
  {
    switch (CallbackID)
    {
      case HAL_LTDC_MSPINIT_CB_ID :
        hltdc->MspInitCallback = pCallback;
        break;

      case HAL_LTDC_MSPDEINIT_CB_ID :
        hltdc->MspDeInitCallback = pCallback;
        break;

      default :
        /* Update the error code */
        hltdc->ErrorCode |= HAL_LTDC_ERROR_INVALID_CALLBACK;
        /* Return error status */
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    /* Update the error code */
    hltdc->ErrorCode |= HAL_LTDC_ERROR_INVALID_CALLBACK;
    /* Return error status */
    status =  HAL_ERROR;
  }

  /* Release Lock */
  __HAL_UNLOCK(hltdc);

  return status;
}

HAL_StatusTypeDef HAL_LTDC_UnRegisterCallback(LTDC_HandleTypeDef *hltdc, HAL_LTDC_CallbackIDTypeDef CallbackID)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Process locked */
  __HAL_LOCK(hltdc);

  if (hltdc->State == HAL_LTDC_STATE_READY)
  {
    switch (CallbackID)
    {
      case HAL_LTDC_LINE_EVENT_CB_ID :
        hltdc->LineEventCallback = HAL_LTDC_LineEventCallback;      /* Legacy weak LineEventCallback    */
        break;

      case HAL_LTDC_RELOAD_EVENT_CB_ID :
        hltdc->ReloadEventCallback = HAL_LTDC_ReloadEventCallback;  /* Legacy weak ReloadEventCallback  */
        break;

      case HAL_LTDC_ERROR_CB_ID :
        hltdc->ErrorCallback       = HAL_LTDC_ErrorCallback;        /* Legacy weak ErrorCallback        */
        break;

      case HAL_LTDC_MSPINIT_CB_ID :
        hltdc->MspInitCallback = HAL_LTDC_MspInit;                  /* Legcay weak MspInit Callback     */
        break;

      case HAL_LTDC_MSPDEINIT_CB_ID :
        hltdc->MspDeInitCallback = HAL_LTDC_MspDeInit;              /* Legcay weak MspDeInit Callback     */
        break;

      default :
        /* Update the error code */
        hltdc->ErrorCode |= HAL_LTDC_ERROR_INVALID_CALLBACK;
        /* Return error status */
        status =  HAL_ERROR;
        break;
    }
  }
  else if (hltdc->State == HAL_LTDC_STATE_RESET)
  {
    switch (CallbackID)
    {
      case HAL_LTDC_MSPINIT_CB_ID :
        hltdc->MspInitCallback = HAL_LTDC_MspInit;                  /* Legcay weak MspInit Callback     */
        break;

      case HAL_LTDC_MSPDEINIT_CB_ID :
        hltdc->MspDeInitCallback = HAL_LTDC_MspDeInit;              /* Legcay weak MspDeInit Callback     */
        break;

      default :
        /* Update the error code */
        hltdc->ErrorCode |= HAL_LTDC_ERROR_INVALID_CALLBACK;
        /* Return error status */
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    /* Update the error code */
    hltdc->ErrorCode |= HAL_LTDC_ERROR_INVALID_CALLBACK;
    /* Return error status */
    status =  HAL_ERROR;
  }

  /* Release Lock */
  __HAL_UNLOCK(hltdc);

  return status;
}
#endif /* USE_HAL_LTDC_REGISTER_CALLBACKS */

void HAL_LTDC_IRQHandler(LTDC_HandleTypeDef *hltdc)
{
  uint32_t isrflags  = READ_REG(hltdc->Instance->ISR);
  uint32_t itsources = READ_REG(hltdc->Instance->IER);

  /* Transfer Error Interrupt management ***************************************/
  if (((isrflags & LTDC_ISR_TERRIF) != 0U) && ((itsources & LTDC_IER_TERRIE) != 0U))
  {
    /* Disable the transfer Error interrupt */
    __HAL_LTDC_DISABLE_IT(hltdc, LTDC_IT_TE);

    /* Clear the transfer error flag */
    __HAL_LTDC_CLEAR_FLAG(hltdc, LTDC_FLAG_TE);

    /* Update error code */
    hltdc->ErrorCode |= HAL_LTDC_ERROR_TE;

    /* Change LTDC state */
    hltdc->State = HAL_LTDC_STATE_ERROR;

    /* Process unlocked */
    __HAL_UNLOCK(hltdc);

    /* Transfer error Callback */
#if (USE_HAL_LTDC_REGISTER_CALLBACKS == 1)
    /*Call registered error callback*/
    hltdc->ErrorCallback(hltdc);
#else
    /* Call legacy error callback*/
    HAL_LTDC_ErrorCallback(hltdc);
#endif /* USE_HAL_LTDC_REGISTER_CALLBACKS */
  }

  /* FIFO underrun Interrupt management ***************************************/
  if (((isrflags & LTDC_ISR_FUIF) != 0U) && ((itsources & LTDC_IER_FUIE) != 0U))
  {
    /* Disable the FIFO underrun interrupt */
    __HAL_LTDC_DISABLE_IT(hltdc, LTDC_IT_FU);

    /* Clear the FIFO underrun flag */
    __HAL_LTDC_CLEAR_FLAG(hltdc, LTDC_FLAG_FU);

    /* Update error code */
    hltdc->ErrorCode |= HAL_LTDC_ERROR_FU;

    /* Change LTDC state */
    hltdc->State = HAL_LTDC_STATE_ERROR;

    /* Process unlocked */
    __HAL_UNLOCK(hltdc);

    /* Transfer error Callback */
#if (USE_HAL_LTDC_REGISTER_CALLBACKS == 1)
    /*Call registered error callback*/
    hltdc->ErrorCallback(hltdc);
#else
    /* Call legacy error callback*/
    HAL_LTDC_ErrorCallback(hltdc);
#endif /* USE_HAL_LTDC_REGISTER_CALLBACKS */
  }

  /* Line Interrupt management ************************************************/
  if (((isrflags & LTDC_ISR_LIF) != 0U) && ((itsources & LTDC_IER_LIE) != 0U))
  {
    /* Disable the Line interrupt */
    __HAL_LTDC_DISABLE_IT(hltdc, LTDC_IT_LI);

    /* Clear the Line interrupt flag */
    __HAL_LTDC_CLEAR_FLAG(hltdc, LTDC_FLAG_LI);

    /* Change LTDC state */
    hltdc->State = HAL_LTDC_STATE_READY;

    /* Process unlocked */
    __HAL_UNLOCK(hltdc);

    /* Line interrupt Callback */
#if (USE_HAL_LTDC_REGISTER_CALLBACKS == 1)
    /*Call registered Line Event callback */
    hltdc->LineEventCallback(hltdc);
#else
    /*Call Legacy Line Event callback */
    HAL_LTDC_LineEventCallback(hltdc);
#endif /* USE_HAL_LTDC_REGISTER_CALLBACKS */
  }

  /* Register reload Interrupt management ***************************************/
  if (((isrflags & LTDC_ISR_RRIF) != 0U) && ((itsources & LTDC_IER_RRIE) != 0U))
  {
    /* Disable the register reload interrupt */
    __HAL_LTDC_DISABLE_IT(hltdc, LTDC_IT_RR);

    /* Clear the register reload flag */
    __HAL_LTDC_CLEAR_FLAG(hltdc, LTDC_FLAG_RR);

    /* Change LTDC state */
    hltdc->State = HAL_LTDC_STATE_READY;

    /* Process unlocked */
    __HAL_UNLOCK(hltdc);

    /* Reload interrupt Callback */
#if (USE_HAL_LTDC_REGISTER_CALLBACKS == 1)
    /*Call registered reload Event callback */
    hltdc->ReloadEventCallback(hltdc);
#else
    /*Call Legacy Reload Event callback */
    HAL_LTDC_ReloadEventCallback(hltdc);
#endif /* USE_HAL_LTDC_REGISTER_CALLBACKS */
  }
}

__weak void HAL_LTDC_ErrorCallback(LTDC_HandleTypeDef *hltdc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hltdc);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_LTDC_ErrorCallback could be implemented in the user file
   */
}

__weak void HAL_LTDC_LineEventCallback(LTDC_HandleTypeDef *hltdc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hltdc);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_LTDC_LineEventCallback could be implemented in the user file
   */
}

__weak void HAL_LTDC_ReloadEventCallback(LTDC_HandleTypeDef *hltdc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hltdc);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_LTDC_ReloadEvenCallback could be implemented in the user file
   */
}

HAL_StatusTypeDef HAL_LTDC_ConfigLayer(LTDC_HandleTypeDef *hltdc, LTDC_LayerCfgTypeDef *pLayerCfg, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));
  assert_param(IS_LTDC_HCONFIGST(pLayerCfg->WindowX0));
  assert_param(IS_LTDC_HCONFIGSP(pLayerCfg->WindowX1));
  assert_param(IS_LTDC_VCONFIGST(pLayerCfg->WindowY0));
  assert_param(IS_LTDC_VCONFIGSP(pLayerCfg->WindowY1));
  assert_param(IS_LTDC_PIXEL_FORMAT(pLayerCfg->PixelFormat));
  assert_param(IS_LTDC_ALPHA(pLayerCfg->Alpha));
  assert_param(IS_LTDC_ALPHA(pLayerCfg->Alpha0));
  assert_param(IS_LTDC_BLENDING_FACTOR1(pLayerCfg->BlendingFactor1));
  assert_param(IS_LTDC_BLENDING_FACTOR2(pLayerCfg->BlendingFactor2));
  assert_param(IS_LTDC_CFBLL(pLayerCfg->ImageWidth));
  assert_param(IS_LTDC_CFBLNBR(pLayerCfg->ImageHeight));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Copy new layer configuration into handle structure */
  hltdc->LayerCfg[LayerIdx] = *pLayerCfg;

  /* Configure the LTDC Layer */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Initialize the LTDC state*/
  hltdc->State  = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_ConfigColorKeying(LTDC_HandleTypeDef *hltdc, uint32_t RGBValue, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Configure the default color values */
  LTDC_LAYER(hltdc, LayerIdx)->CKCR &=  ~(LTDC_LxCKCR_CKBLUE | LTDC_LxCKCR_CKGREEN | LTDC_LxCKCR_CKRED);
  LTDC_LAYER(hltdc, LayerIdx)->CKCR  = RGBValue;

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_ConfigCLUT(LTDC_HandleTypeDef *hltdc, uint32_t *pCLUT, uint32_t CLUTSize, uint32_t LayerIdx)
{
  uint32_t tmp;
  uint32_t counter;
  uint32_t *pcolorlut = pCLUT;
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  for (counter = 0U; (counter < CLUTSize); counter++)
  {
    if (hltdc->LayerCfg[LayerIdx].PixelFormat == LTDC_PIXEL_FORMAT_AL44)
    {
      tmp  = (((counter + (16U*counter)) << 24U) | ((uint32_t)(*pcolorlut) & 0xFFU) | ((uint32_t)(*pcolorlut) & 0xFF00U) | ((uint32_t)(*pcolorlut) & 0xFF0000U));
    }
    else
    {
      tmp  = ((counter << 24U) | ((uint32_t)(*pcolorlut) & 0xFFU) | ((uint32_t)(*pcolorlut) & 0xFF00U) | ((uint32_t)(*pcolorlut) & 0xFF0000U));
    }

    pcolorlut++;

    /* Specifies the C-LUT address and RGB value */
    LTDC_LAYER(hltdc, LayerIdx)->CLUTWR  = tmp;
  }

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_EnableColorKeying(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Enable LTDC color keying by setting COLKEN bit */
  LTDC_LAYER(hltdc, LayerIdx)->CR |= (uint32_t)LTDC_LxCR_COLKEN;

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_DisableColorKeying(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Disable LTDC color keying by setting COLKEN bit */
  LTDC_LAYER(hltdc, LayerIdx)->CR &= ~(uint32_t)LTDC_LxCR_COLKEN;

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_EnableCLUT(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Enable LTDC color lookup table by setting CLUTEN bit */
  LTDC_LAYER(hltdc, LayerIdx)->CR |= (uint32_t)LTDC_LxCR_CLUTEN;

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_DisableCLUT(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Disable LTDC color lookup table by setting CLUTEN bit */
  LTDC_LAYER(hltdc, LayerIdx)->CR &= ~(uint32_t)LTDC_LxCR_CLUTEN;

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_EnableDither(LTDC_HandleTypeDef *hltdc)
{
  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Enable Dither by setting DTEN bit */
  LTDC->GCR |= (uint32_t)LTDC_GCR_DEN;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_DisableDither(LTDC_HandleTypeDef *hltdc)
{
  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Disable Dither by setting DTEN bit */
  LTDC->GCR &= ~(uint32_t)LTDC_GCR_DEN;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetWindowSize(LTDC_HandleTypeDef *hltdc, uint32_t XSize, uint32_t YSize, uint32_t LayerIdx)
{
  LTDC_LayerCfgTypeDef *pLayerCfg;

  /* Check the parameters (Layers parameters)*/
  assert_param(IS_LTDC_LAYER(LayerIdx));
  assert_param(IS_LTDC_CFBLL(XSize));
  assert_param(IS_LTDC_CFBLNBR(YSize));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Get layer configuration from handle structure */
  pLayerCfg = &hltdc->LayerCfg[LayerIdx];

  /* update horizontal stop */
  pLayerCfg->WindowX1 = XSize + pLayerCfg->WindowX0;

  /* update vertical stop */
  pLayerCfg->WindowY1 = YSize + pLayerCfg->WindowY0;

  /* Reconfigures the color frame buffer pitch in byte */
  pLayerCfg->ImageWidth = XSize;

  /* Reconfigures the frame buffer line number */
  pLayerCfg->ImageHeight = YSize;

  /* Set LTDC parameters */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetWindowPosition(LTDC_HandleTypeDef *hltdc, uint32_t X0, uint32_t Y0, uint32_t LayerIdx)
{
  LTDC_LayerCfgTypeDef *pLayerCfg;

  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));
  assert_param(IS_LTDC_CFBLL(X0));
  assert_param(IS_LTDC_CFBLNBR(Y0));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Get layer configuration from handle structure */
  pLayerCfg = &hltdc->LayerCfg[LayerIdx];

  /* update horizontal start/stop */
  pLayerCfg->WindowX0 = X0;
  pLayerCfg->WindowX1 = X0 + pLayerCfg->ImageWidth;

  /* update vertical start/stop */
  pLayerCfg->WindowY0 = Y0;
  pLayerCfg->WindowY1 = Y0 + pLayerCfg->ImageHeight;

  /* Set LTDC parameters */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetPixelFormat(LTDC_HandleTypeDef *hltdc, uint32_t Pixelformat, uint32_t LayerIdx)
{
  LTDC_LayerCfgTypeDef *pLayerCfg;

  /* Check the parameters */
  assert_param(IS_LTDC_PIXEL_FORMAT(Pixelformat));
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Get layer configuration from handle structure */
  pLayerCfg = &hltdc->LayerCfg[LayerIdx];

  /* Reconfigure the pixel format */
  pLayerCfg->PixelFormat = Pixelformat;

  /* Set LTDC parameters */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetAlpha(LTDC_HandleTypeDef *hltdc, uint32_t Alpha, uint32_t LayerIdx)
{
  LTDC_LayerCfgTypeDef *pLayerCfg;

  /* Check the parameters */
  assert_param(IS_LTDC_ALPHA(Alpha));
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Get layer configuration from handle structure */
  pLayerCfg = &hltdc->LayerCfg[LayerIdx];

  /* Reconfigure the Alpha value */
  pLayerCfg->Alpha = Alpha;

  /* Set LTDC parameters */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}
HAL_StatusTypeDef HAL_LTDC_SetAddress(LTDC_HandleTypeDef *hltdc, uint32_t Address, uint32_t LayerIdx)
{
  LTDC_LayerCfgTypeDef *pLayerCfg;

  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Get layer configuration from handle structure */
  pLayerCfg = &hltdc->LayerCfg[LayerIdx];

  /* Reconfigure the Address */
  pLayerCfg->FBStartAdress = Address;

  /* Set LTDC parameters */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Set the Immediate Reload type */
  hltdc->Instance->SRCR = LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetPitch(LTDC_HandleTypeDef *hltdc, uint32_t LinePitchInPixels, uint32_t LayerIdx)
{
  uint32_t tmp;
  uint32_t pitchUpdate;
  uint32_t pixelFormat;

  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* get LayerIdx used pixel format */
  pixelFormat = hltdc->LayerCfg[LayerIdx].PixelFormat;

  if (pixelFormat == LTDC_PIXEL_FORMAT_ARGB8888)
  {
    tmp = 4U;
  }
  else if (pixelFormat == LTDC_PIXEL_FORMAT_RGB888)
  {
    tmp = 3U;
  }
  else if ((pixelFormat == LTDC_PIXEL_FORMAT_ARGB4444) || \
           (pixelFormat == LTDC_PIXEL_FORMAT_RGB565)   || \
           (pixelFormat == LTDC_PIXEL_FORMAT_ARGB1555) || \
           (pixelFormat == LTDC_PIXEL_FORMAT_AL88))
  {
    tmp = 2U;
  }
  else
  {
    tmp = 1U;
  }

  pitchUpdate = ((LinePitchInPixels * tmp) << 16U);

  /* Clear previously set standard pitch */
  LTDC_LAYER(hltdc, LayerIdx)->CFBLR &= ~LTDC_LxCFBLR_CFBP;

  /* Set the Reload type as immediate update of LTDC pitch configured above */
  LTDC->SRCR |= LTDC_SRCR_IMR;

  /* Set new line pitch value */
  LTDC_LAYER(hltdc, LayerIdx)->CFBLR |= pitchUpdate;

  /* Set the Reload type as immediate update of LTDC pitch configured above */
  LTDC->SRCR |= LTDC_SRCR_IMR;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_ProgramLineEvent(LTDC_HandleTypeDef *hltdc, uint32_t Line)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LIPOS(Line));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Disable the Line interrupt */
  __HAL_LTDC_DISABLE_IT(hltdc, LTDC_IT_LI);

  /* Set the Line Interrupt position */
  LTDC->LIPCR = (uint32_t)Line;

  /* Enable the Line interrupt */
  __HAL_LTDC_ENABLE_IT(hltdc, LTDC_IT_LI);

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef  HAL_LTDC_Reload(LTDC_HandleTypeDef *hltdc, uint32_t ReloadType)
{
  /* Check the parameters */
  assert_param(IS_LTDC_RELOAD(ReloadType));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Enable the Reload interrupt */
  __HAL_LTDC_ENABLE_IT(hltdc, LTDC_IT_RR);

  /* Apply Reload type */
  hltdc->Instance->SRCR = ReloadType;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_ConfigLayer_NoReload(LTDC_HandleTypeDef *hltdc, LTDC_LayerCfgTypeDef *pLayerCfg, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));
  assert_param(IS_LTDC_HCONFIGST(pLayerCfg->WindowX0));
  assert_param(IS_LTDC_HCONFIGSP(pLayerCfg->WindowX1));
  assert_param(IS_LTDC_VCONFIGST(pLayerCfg->WindowY0));
  assert_param(IS_LTDC_VCONFIGSP(pLayerCfg->WindowY1));
  assert_param(IS_LTDC_PIXEL_FORMAT(pLayerCfg->PixelFormat));
  assert_param(IS_LTDC_ALPHA(pLayerCfg->Alpha));
  assert_param(IS_LTDC_ALPHA(pLayerCfg->Alpha0));
  assert_param(IS_LTDC_BLENDING_FACTOR1(pLayerCfg->BlendingFactor1));
  assert_param(IS_LTDC_BLENDING_FACTOR2(pLayerCfg->BlendingFactor2));
  assert_param(IS_LTDC_CFBLL(pLayerCfg->ImageWidth));
  assert_param(IS_LTDC_CFBLNBR(pLayerCfg->ImageHeight));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Copy new layer configuration into handle structure */
  hltdc->LayerCfg[LayerIdx] = *pLayerCfg;

  /* Configure the LTDC Layer */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Initialize the LTDC state*/
  hltdc->State  = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetWindowSize_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t XSize, uint32_t YSize, uint32_t LayerIdx)
{
  LTDC_LayerCfgTypeDef *pLayerCfg;

  /* Check the parameters (Layers parameters)*/
  assert_param(IS_LTDC_LAYER(LayerIdx));
  assert_param(IS_LTDC_CFBLL(XSize));
  assert_param(IS_LTDC_CFBLNBR(YSize));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Get layer configuration from handle structure */
  pLayerCfg = &hltdc->LayerCfg[LayerIdx];

  /* update horizontal stop */
  pLayerCfg->WindowX1 = XSize + pLayerCfg->WindowX0;

  /* update vertical stop */
  pLayerCfg->WindowY1 = YSize + pLayerCfg->WindowY0;

  /* Reconfigures the color frame buffer pitch in byte */
  pLayerCfg->ImageWidth = XSize;

  /* Reconfigures the frame buffer line number */
  pLayerCfg->ImageHeight = YSize;

  /* Set LTDC parameters */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetWindowPosition_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t X0, uint32_t Y0, uint32_t LayerIdx)
{
  LTDC_LayerCfgTypeDef *pLayerCfg;

  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));
  assert_param(IS_LTDC_CFBLL(X0));
  assert_param(IS_LTDC_CFBLNBR(Y0));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Get layer configuration from handle structure */
  pLayerCfg = &hltdc->LayerCfg[LayerIdx];

  /* update horizontal start/stop */
  pLayerCfg->WindowX0 = X0;
  pLayerCfg->WindowX1 = X0 + pLayerCfg->ImageWidth;

  /* update vertical start/stop */
  pLayerCfg->WindowY0 = Y0;
  pLayerCfg->WindowY1 = Y0 + pLayerCfg->ImageHeight;

  /* Set LTDC parameters */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetPixelFormat_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t Pixelformat, uint32_t LayerIdx)
{
  LTDC_LayerCfgTypeDef *pLayerCfg;

  /* Check the parameters */
  assert_param(IS_LTDC_PIXEL_FORMAT(Pixelformat));
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Get layer configuration from handle structure */
  pLayerCfg = &hltdc->LayerCfg[LayerIdx];

  /* Reconfigure the pixel format */
  pLayerCfg->PixelFormat = Pixelformat;

  /* Set LTDC parameters */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetAlpha_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t Alpha, uint32_t LayerIdx)
{
  LTDC_LayerCfgTypeDef *pLayerCfg;

  /* Check the parameters */
  assert_param(IS_LTDC_ALPHA(Alpha));
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Get layer configuration from handle structure */
  pLayerCfg = &hltdc->LayerCfg[LayerIdx];

  /* Reconfigure the Alpha value */
  pLayerCfg->Alpha = Alpha;

  /* Set LTDC parameters */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetAddress_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t Address, uint32_t LayerIdx)
{
  LTDC_LayerCfgTypeDef *pLayerCfg;

  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Get layer configuration from handle structure */
  pLayerCfg = &hltdc->LayerCfg[LayerIdx];

  /* Reconfigure the Address */
  pLayerCfg->FBStartAdress = Address;

  /* Set LTDC parameters */
  LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_SetPitch_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t LinePitchInPixels, uint32_t LayerIdx)
{
  uint32_t tmp;
  uint32_t pitchUpdate;
  uint32_t pixelFormat;

  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* get LayerIdx used pixel format */
  pixelFormat = hltdc->LayerCfg[LayerIdx].PixelFormat;

  if (pixelFormat == LTDC_PIXEL_FORMAT_ARGB8888)
  {
    tmp = 4U;
  }
  else if (pixelFormat == LTDC_PIXEL_FORMAT_RGB888)
  {
    tmp = 3U;
  }
  else if ((pixelFormat == LTDC_PIXEL_FORMAT_ARGB4444) || \
           (pixelFormat == LTDC_PIXEL_FORMAT_RGB565)   || \
           (pixelFormat == LTDC_PIXEL_FORMAT_ARGB1555) || \
           (pixelFormat == LTDC_PIXEL_FORMAT_AL88))
  {
    tmp = 2U;
  }
  else
  {
    tmp = 1U;
  }

  pitchUpdate = ((LinePitchInPixels * tmp) << 16U);

  /* Clear previously set standard pitch */
  LTDC_LAYER(hltdc, LayerIdx)->CFBLR &= ~LTDC_LxCFBLR_CFBP;

  /* Set new line pitch value */
  LTDC_LAYER(hltdc, LayerIdx)->CFBLR |= pitchUpdate;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}


HAL_StatusTypeDef HAL_LTDC_ConfigColorKeying_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t RGBValue, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Configure the default color values */
  LTDC_LAYER(hltdc, LayerIdx)->CKCR &=  ~(LTDC_LxCKCR_CKBLUE | LTDC_LxCKCR_CKGREEN | LTDC_LxCKCR_CKRED);
  LTDC_LAYER(hltdc, LayerIdx)->CKCR  = RGBValue;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_EnableColorKeying_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Enable LTDC color keying by setting COLKEN bit */
  LTDC_LAYER(hltdc, LayerIdx)->CR |= (uint32_t)LTDC_LxCR_COLKEN;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_DisableColorKeying_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Disable LTDC color keying by setting COLKEN bit */
  LTDC_LAYER(hltdc, LayerIdx)->CR &= ~(uint32_t)LTDC_LxCR_COLKEN;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_EnableCLUT_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Disable LTDC color lookup table by setting CLUTEN bit */
  LTDC_LAYER(hltdc, LayerIdx)->CR |= (uint32_t)LTDC_LxCR_CLUTEN;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_StatusTypeDef HAL_LTDC_DisableCLUT_NoReload(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
  /* Check the parameters */
  assert_param(IS_LTDC_LAYER(LayerIdx));

  /* Process locked */
  __HAL_LOCK(hltdc);

  /* Change LTDC peripheral state */
  hltdc->State = HAL_LTDC_STATE_BUSY;

  /* Disable LTDC color lookup table by setting CLUTEN bit */
  LTDC_LAYER(hltdc, LayerIdx)->CR &= ~(uint32_t)LTDC_LxCR_CLUTEN;

  /* Change the LTDC state*/
  hltdc->State = HAL_LTDC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hltdc);

  return HAL_OK;
}

HAL_LTDC_StateTypeDef HAL_LTDC_GetState(LTDC_HandleTypeDef *hltdc)
{
  return hltdc->State;
}

uint32_t HAL_LTDC_GetError(LTDC_HandleTypeDef *hltdc)
{
  return hltdc->ErrorCode;
}

static void LTDC_SetConfig(LTDC_HandleTypeDef *hltdc, LTDC_LayerCfgTypeDef *pLayerCfg, uint32_t LayerIdx)
{
  uint32_t tmp;
  uint32_t tmp1;
  uint32_t tmp2;

  /* Configure the horizontal start and stop position */
  tmp = ((pLayerCfg->WindowX1 + ((hltdc->Instance->BPCR & LTDC_BPCR_AHBP) >> 16U)) << 16U);
  LTDC_LAYER(hltdc, LayerIdx)->WHPCR &= ~(LTDC_LxWHPCR_WHSTPOS | LTDC_LxWHPCR_WHSPPOS);
  LTDC_LAYER(hltdc, LayerIdx)->WHPCR = ((pLayerCfg->WindowX0 + ((hltdc->Instance->BPCR & LTDC_BPCR_AHBP) >> 16U) + 1U) | tmp);

  /* Configure the vertical start and stop position */
  tmp = ((pLayerCfg->WindowY1 + (hltdc->Instance->BPCR & LTDC_BPCR_AVBP)) << 16U);
  LTDC_LAYER(hltdc, LayerIdx)->WVPCR &= ~(LTDC_LxWVPCR_WVSTPOS | LTDC_LxWVPCR_WVSPPOS);
  LTDC_LAYER(hltdc, LayerIdx)->WVPCR  = ((pLayerCfg->WindowY0 + (hltdc->Instance->BPCR & LTDC_BPCR_AVBP) + 1U) | tmp);

  /* Specifies the pixel format */
  LTDC_LAYER(hltdc, LayerIdx)->PFCR &= ~(LTDC_LxPFCR_PF);
  LTDC_LAYER(hltdc, LayerIdx)->PFCR = (pLayerCfg->PixelFormat);

  /* Configure the default color values */
  tmp = ((uint32_t)(pLayerCfg->Backcolor.Green) << 8U);
  tmp1 = ((uint32_t)(pLayerCfg->Backcolor.Red) << 16U);
  tmp2 = (pLayerCfg->Alpha0 << 24U);
  LTDC_LAYER(hltdc, LayerIdx)->DCCR &= ~(LTDC_LxDCCR_DCBLUE | LTDC_LxDCCR_DCGREEN | LTDC_LxDCCR_DCRED | LTDC_LxDCCR_DCALPHA);
  LTDC_LAYER(hltdc, LayerIdx)->DCCR = (pLayerCfg->Backcolor.Blue | tmp | tmp1 | tmp2);

  /* Specifies the constant alpha value */
  LTDC_LAYER(hltdc, LayerIdx)->CACR &= ~(LTDC_LxCACR_CONSTA);
  LTDC_LAYER(hltdc, LayerIdx)->CACR = (pLayerCfg->Alpha);

  /* Specifies the blending factors */
  LTDC_LAYER(hltdc, LayerIdx)->BFCR &= ~(LTDC_LxBFCR_BF2 | LTDC_LxBFCR_BF1);
  LTDC_LAYER(hltdc, LayerIdx)->BFCR = (pLayerCfg->BlendingFactor1 | pLayerCfg->BlendingFactor2);

  /* Configure the color frame buffer start address */
  LTDC_LAYER(hltdc, LayerIdx)->CFBAR &= ~(LTDC_LxCFBAR_CFBADD);
  LTDC_LAYER(hltdc, LayerIdx)->CFBAR = (pLayerCfg->FBStartAdress);

  if (pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_ARGB8888)
  {
    tmp = 4U;
  }
  else if (pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_RGB888)
  {
    tmp = 3U;
  }
  else if ((pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_ARGB4444) || \
           (pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_RGB565)   || \
           (pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_ARGB1555) || \
           (pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_AL88))
  {
    tmp = 2U;
  }
  else
  {
    tmp = 1U;
  }

  /* Configure the color frame buffer pitch in byte */
  LTDC_LAYER(hltdc, LayerIdx)->CFBLR  &= ~(LTDC_LxCFBLR_CFBLL | LTDC_LxCFBLR_CFBP);
  LTDC_LAYER(hltdc, LayerIdx)->CFBLR  = (((pLayerCfg->ImageWidth * tmp) << 16U) | (((pLayerCfg->WindowX1 - pLayerCfg->WindowX0) * tmp)  + 3U));
  /* Configure the frame buffer line number */
  LTDC_LAYER(hltdc, LayerIdx)->CFBLNR  &= ~(LTDC_LxCFBLNR_CFBLNBR);
  LTDC_LAYER(hltdc, LayerIdx)->CFBLNR  = (pLayerCfg->ImageHeight);

  /* Enable LTDC_Layer by setting LEN bit */
  LTDC_LAYER(hltdc, LayerIdx)->CR |= (uint32_t)LTDC_LxCR_LEN;
}

#endif /* LTDC */

#endif /* HAL_LTDC_MODULE_ENABLED */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/