control/Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_dsi.c

/**
  ******************************************************************************
  * @file    stm32f7xx_hal_dsi.c
  * @author  MCD Application Team
  * @brief   DSI HAL module driver.
  *          This file provides firmware functions to manage the following 
  *          functionalities of the DSI peripheral:
  *           + Initialization and de-initialization functions
  *           + IO operation functions
  *           + Peripheral Control functions  
  *           + Peripheral State and Errors functions
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */ 

/* Includes ------------------------------------------------------------------*/
#include "stm32f7xx_hal.h"

/** @addtogroup STM32F7xx_HAL_Driver
  * @{
  */
/** @addtogroup DSI
  * @{
  */

#ifdef HAL_DSI_MODULE_ENABLED

#if defined (STM32F769xx) || defined (STM32F779xx)

/* Private types -------------------------------------------------------------*/
/* Private defines -----------------------------------------------------------*/
/** @addtogroup DSI_Private_Constants
  * @{
  */
#define DSI_TIMEOUT_VALUE ((uint32_t)1000)  /* 1s */

#define DSI_ERROR_ACK_MASK (DSI_ISR0_AE0 | DSI_ISR0_AE1 | DSI_ISR0_AE2 | DSI_ISR0_AE3 | \
                            DSI_ISR0_AE4 | DSI_ISR0_AE5 | DSI_ISR0_AE6 | DSI_ISR0_AE7 | \
                            DSI_ISR0_AE8 | DSI_ISR0_AE9 | DSI_ISR0_AE10 | DSI_ISR0_AE11 | \
                            DSI_ISR0_AE12 | DSI_ISR0_AE13 | DSI_ISR0_AE14 | DSI_ISR0_AE15)
#define DSI_ERROR_PHY_MASK (DSI_ISR0_PE0 | DSI_ISR0_PE1 | DSI_ISR0_PE2 | DSI_ISR0_PE3 | DSI_ISR0_PE4)
#define DSI_ERROR_TX_MASK  DSI_ISR1_TOHSTX
#define DSI_ERROR_RX_MASK  DSI_ISR1_TOLPRX
#define DSI_ERROR_ECC_MASK (DSI_ISR1_ECCSE | DSI_ISR1_ECCME)
#define DSI_ERROR_CRC_MASK DSI_ISR1_CRCE
#define DSI_ERROR_PSE_MASK DSI_ISR1_PSE
#define DSI_ERROR_EOT_MASK DSI_ISR1_EOTPE
#define DSI_ERROR_OVF_MASK DSI_ISR1_LPWRE
#define DSI_ERROR_GEN_MASK (DSI_ISR1_GCWRE | DSI_ISR1_GPWRE | DSI_ISR1_GPTXE | DSI_ISR1_GPRDE | DSI_ISR1_GPRXE)
/**
  * @}
  */

/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void DSI_ConfigPacketHeader(DSI_TypeDef *DSIx, uint32_t ChannelID, uint32_t DataType, uint32_t Data0, uint32_t Data1);

/* Private functions ---------------------------------------------------------*/
/**
  * @brief  Generic DSI packet header configuration
  * @param  DSIx Pointer to DSI register base
  * @param  ChannelID Virtual channel ID of the header packet
  * @param  DataType Packet data type of the header packet
  *                   This parameter can be any value of :
  *                      @ref DSI_SHORT_WRITE_PKT_Data_Type
  *                   or @ref DSI_LONG_WRITE_PKT_Data_Type
  *                   or @ref DSI_SHORT_READ_PKT_Data_Type
  *                   or DSI_MAX_RETURN_PKT_SIZE
  * @param  Data0 Word count LSB
  * @param  Data1 Word count MSB
  * @retval None
  */
static void DSI_ConfigPacketHeader(DSI_TypeDef *DSIx,
                                   uint32_t ChannelID,
                                   uint32_t DataType,
                                   uint32_t Data0,
                                   uint32_t Data1)
{
  /* Update the DSI packet header with new information */
  DSIx->GHCR = (DataType | (ChannelID<<6) | (Data0<<8) | (Data1<<16));
}

/* Exported functions --------------------------------------------------------*/
/** @addtogroup DSI_Exported_Functions
  * @{
  */

/** @defgroup DSI_Group1 Initialization and Configuration functions
 *  @brief   Initialization and Configuration functions
 *
@verbatim   
 ===============================================================================
                ##### Initialization and Configuration functions #####
 ===============================================================================  
    [..]  This section provides functions allowing to:
      (+) Initialize and configure the DSI
      (+) De-initialize the DSI 

@endverbatim
  * @{
  */
  
/**
  * @brief  Initializes the DSI according to the specified
  *         parameters in the DSI_InitTypeDef and create the associated handle.
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  PLLInit pointer to a DSI_PLLInitTypeDef structure that contains
  *               the PLL Clock structure definition for the DSI.  
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_Init(DSI_HandleTypeDef *hdsi, DSI_PLLInitTypeDef *PLLInit)
{
  uint32_t tickstart = 0;
  uint32_t unitIntervalx4 = 0;
  uint32_t tempIDF = 0;
  
  /* Check the DSI handle allocation */
  if(hdsi == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check function parameters */
  assert_param(IS_DSI_PLL_NDIV(PLLInit->PLLNDIV));
  assert_param(IS_DSI_PLL_IDF(PLLInit->PLLIDF));
  assert_param(IS_DSI_PLL_ODF(PLLInit->PLLODF));
  assert_param(IS_DSI_AUTO_CLKLANE_CONTROL(hdsi->Init.AutomaticClockLaneControl));
  assert_param(IS_DSI_NUMBER_OF_LANES(hdsi->Init.NumberOfLanes));
  
  if(hdsi->State == HAL_DSI_STATE_RESET)
  {
    /* Initialize the low level hardware */
    HAL_DSI_MspInit(hdsi);
  }
  
  /* Change DSI peripheral state */
  hdsi->State = HAL_DSI_STATE_BUSY;
  
  /**************** Turn on the regulator and enable the DSI PLL ****************/
  
    /* Enable the regulator */
    __HAL_DSI_REG_ENABLE(hdsi);
    
	/* Get tick */ 
    tickstart = HAL_GetTick();
	
    /* Wait until the regulator is ready */
	while(__HAL_DSI_GET_FLAG(hdsi, DSI_FLAG_RRS) == RESET)
    {
      /* Check for the Timeout */
      if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
      {
        return HAL_TIMEOUT;
      }
    }
    
    /* Set the PLL division factors */
    hdsi->Instance->WRPCR &= ~(DSI_WRPCR_PLL_NDIV | DSI_WRPCR_PLL_IDF | DSI_WRPCR_PLL_ODF);
    hdsi->Instance->WRPCR |= (((PLLInit->PLLNDIV)<<2) | ((PLLInit->PLLIDF)<<11) | ((PLLInit->PLLODF)<<16));
    
    /* Enable the DSI PLL */
    __HAL_DSI_PLL_ENABLE(hdsi);
    
	/* Get tick */ 
    tickstart = HAL_GetTick();
	
    /* Wait for the lock of the PLL */
    while(__HAL_DSI_GET_FLAG(hdsi, DSI_FLAG_PLLLS) == RESET)
    {
      /* Check for the Timeout */
      if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
      {
        return HAL_TIMEOUT;
      }
    }
  
  /*************************** Set the PHY parameters ***************************/
  
    /* D-PHY clock and digital enable*/
    hdsi->Instance->PCTLR |= (DSI_PCTLR_CKE | DSI_PCTLR_DEN);
    
    /* Clock lane configuration */
    hdsi->Instance->CLCR &= ~(DSI_CLCR_DPCC | DSI_CLCR_ACR);
    hdsi->Instance->CLCR |= (DSI_CLCR_DPCC | hdsi->Init.AutomaticClockLaneControl);
    
    /* Configure the number of active data lanes */
    hdsi->Instance->PCONFR &= ~DSI_PCONFR_NL;
    hdsi->Instance->PCONFR |= hdsi->Init.NumberOfLanes;
  
  /************************ Set the DSI clock parameters ************************/
  
    /* Set the TX escape clock division factor */
    hdsi->Instance->CCR &= ~DSI_CCR_TXECKDIV;
    hdsi->Instance->CCR |= hdsi->Init.TXEscapeCkdiv;
    
    /* Calculate the bit period in high-speed mode in unit of 0.25 ns (UIX4) */
    /* The equation is : UIX4 = IntegerPart( (1000/F_PHY_Mhz) * 4 )          */
    /* Where : F_PHY_Mhz = (NDIV * HSE_Mhz) / (IDF * ODF)                    */
    tempIDF = (PLLInit->PLLIDF > 0) ? PLLInit->PLLIDF : 1;
    unitIntervalx4 = (4000000 * tempIDF * (1 << PLLInit->PLLODF)) / ((HSE_VALUE/1000) * PLLInit->PLLNDIV);
	
    /* Set the bit period in high-speed mode */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_UIX4;
    hdsi->Instance->WPCR[0] |= unitIntervalx4;
  
  /****************************** Error management *****************************/
  
    /* Disable all error interrupts and reset the Error Mask */
    hdsi->Instance->IER[0] = 0;
    hdsi->Instance->IER[1] = 0;
    hdsi->ErrorMsk = 0;
    
    /* Initialise the error code */
    hdsi->ErrorCode = HAL_DSI_ERROR_NONE;
  
  /* Initialize the DSI state*/
  hdsi->State = HAL_DSI_STATE_READY;
  
  return HAL_OK;
}

/**
  * @brief  De-initializes the DSI peripheral registers to their default reset
  *         values.
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_DeInit(DSI_HandleTypeDef *hdsi)
{
  /* Check the DSI handle allocation */
  if(hdsi == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Change DSI peripheral state */
  hdsi->State = HAL_DSI_STATE_BUSY;
  
  /* Disable the DSI wrapper */
  __HAL_DSI_WRAPPER_DISABLE(hdsi);
  
  /* Disable the DSI host */
  __HAL_DSI_DISABLE(hdsi);
  
  /* D-PHY clock and digital disable */
  hdsi->Instance->PCTLR &= ~(DSI_PCTLR_CKE | DSI_PCTLR_DEN);
  
  /* Turn off the DSI PLL */
  __HAL_DSI_PLL_DISABLE(hdsi);
  
  /* Disable the regulator */
  __HAL_DSI_REG_DISABLE(hdsi);
  
  /* DeInit the low level hardware */
  HAL_DSI_MspDeInit(hdsi); 
  
  /* Initialise the error code */
  hdsi->ErrorCode = HAL_DSI_ERROR_NONE;
  
  /* Initialize the DSI state*/
  hdsi->State = HAL_DSI_STATE_RESET;
  
  /* Release Lock */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Return the DSI error code
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval DSI Error Code
  */
uint32_t HAL_DSI_GetError(DSI_HandleTypeDef *hdsi)
{
  /* Get the error code */
  return hdsi->ErrorCode;
}

/**
  * @brief  Enable the error monitor flags 
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  ActiveErrors indicates which error interrupts will be enabled.
  *                      This parameter can be any combination of @ref DSI_Error_Data_Type.
  * @retval HAL status 
  */
HAL_StatusTypeDef HAL_DSI_ConfigErrorMonitor(DSI_HandleTypeDef *hdsi, uint32_t ActiveErrors)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  hdsi->Instance->IER[0] = 0;
  hdsi->Instance->IER[1] = 0;
  
  /* Store active errors to the handle */
  hdsi->ErrorMsk = ActiveErrors;
  
  if((ActiveErrors & HAL_DSI_ERROR_ACK) != RESET)
  {
    /* Enable the interrupt generation on selected errors */
    hdsi->Instance->IER[0] |= DSI_ERROR_ACK_MASK;
  }
  
  if((ActiveErrors & HAL_DSI_ERROR_PHY ) != RESET)
  {
    /* Enable the interrupt generation on selected errors */
    hdsi->Instance->IER[0] |= DSI_ERROR_PHY_MASK;
  }
  
  if((ActiveErrors & HAL_DSI_ERROR_TX) != RESET)
  {
    /* Enable the interrupt generation on selected errors */
    hdsi->Instance->IER[1] |= DSI_ERROR_TX_MASK;
  }
  
  if((ActiveErrors & HAL_DSI_ERROR_RX) != RESET)
  {
    /* Enable the interrupt generation on selected errors */
    hdsi->Instance->IER[1] |= DSI_ERROR_RX_MASK;
  }
  
  if((ActiveErrors & HAL_DSI_ERROR_ECC) != RESET)
  {
    /* Enable the interrupt generation on selected errors */
    hdsi->Instance->IER[1] |= DSI_ERROR_ECC_MASK;
  }
  
  if((ActiveErrors & HAL_DSI_ERROR_CRC) != RESET)
  {
    /* Enable the interrupt generation on selected errors */
    hdsi->Instance->IER[1] |= DSI_ERROR_CRC_MASK;
  }
  
  if((ActiveErrors & HAL_DSI_ERROR_PSE) != RESET)
  {
    /* Enable the interrupt generation on selected errors */
    hdsi->Instance->IER[1] |= DSI_ERROR_PSE_MASK;
  }
  
  if((ActiveErrors & HAL_DSI_ERROR_EOT) != RESET)
  {
    /* Enable the interrupt generation on selected errors */
    hdsi->Instance->IER[1] |= DSI_ERROR_EOT_MASK;
  }
  
  if((ActiveErrors & HAL_DSI_ERROR_OVF) != RESET)
  {
    /* Enable the interrupt generation on selected errors */
    hdsi->Instance->IER[1] |= DSI_ERROR_OVF_MASK;
  }
  
  if((ActiveErrors & HAL_DSI_ERROR_GEN) != RESET)
  {
    /* Enable the interrupt generation on selected errors */
    hdsi->Instance->IER[1] |= DSI_ERROR_GEN_MASK;
  }
  
  /* Process Unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Initializes the DSI MSP.
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval None
  */
__weak void HAL_DSI_MspInit(DSI_HandleTypeDef* hdsi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdsi);
 
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DSI_MspInit could be implemented in the user file
   */ 
}

/**
  * @brief  De-initializes the DSI MSP.
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval None
  */
__weak void HAL_DSI_MspDeInit(DSI_HandleTypeDef* hdsi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdsi);
 
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DSI_MspDeInit could be implemented in the user file
   */
}

/**
  * @}
  */
  
/** @defgroup DSI_Group2 IO operation functions 
 *  @brief    IO operation functions  
 *
@verbatim
 ===============================================================================
                      #####  IO operation functions  #####
 ===============================================================================  
    [..]  This section provides function allowing to:
      (+) Handle DSI interrupt request

@endverbatim
  * @{
  */
/**
  * @brief  Handles DSI interrupt request.
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.  
  * @retval HAL status
  */
void HAL_DSI_IRQHandler(DSI_HandleTypeDef *hdsi)
{
  uint32_t ErrorStatus0, ErrorStatus1;
  
  /* Tearing Effect Interrupt management ***************************************/
  if(__HAL_DSI_GET_FLAG(hdsi, DSI_FLAG_TE) != RESET)
  {
    if(__HAL_DSI_GET_IT_SOURCE(hdsi, DSI_IT_TE) != RESET)
    {
      /* Clear the Tearing Effect Interrupt Flag */
      __HAL_DSI_CLEAR_FLAG(hdsi, DSI_FLAG_TE);
      
      /* Tearing Effect Callback */
      HAL_DSI_TearingEffectCallback(hdsi);
    }
  }
  
  /* End of Refresh Interrupt management ***************************************/
  if(__HAL_DSI_GET_FLAG(hdsi, DSI_FLAG_ER) != RESET)
  {
    if(__HAL_DSI_GET_IT_SOURCE(hdsi, DSI_IT_ER) != RESET)
    {
      /* Clear the End of Refresh Interrupt Flag */
      __HAL_DSI_CLEAR_FLAG(hdsi, DSI_FLAG_ER);
      
      /* End of Refresh Callback */
      HAL_DSI_EndOfRefreshCallback(hdsi);
    }
  }
  
  /* Error Interrupts management ***********************************************/
  if(hdsi->ErrorMsk != 0)
  {
    ErrorStatus0 = hdsi->Instance->ISR[0];
    ErrorStatus0 &= hdsi->Instance->IER[0];
    ErrorStatus1 = hdsi->Instance->ISR[1];
    ErrorStatus1 &= hdsi->Instance->IER[1];
    
    if((ErrorStatus0 & DSI_ERROR_ACK_MASK) != RESET)
    {
      hdsi->ErrorCode |= HAL_DSI_ERROR_ACK;
    }
    
    if((ErrorStatus0 & DSI_ERROR_PHY_MASK) != RESET)
    {
      hdsi->ErrorCode |= HAL_DSI_ERROR_PHY;
    }
    
    if((ErrorStatus1 & DSI_ERROR_TX_MASK) != RESET)
    {
      hdsi->ErrorCode |= HAL_DSI_ERROR_TX;
    }
    
    if((ErrorStatus1 & DSI_ERROR_RX_MASK) != RESET)
    {
      hdsi->ErrorCode |= HAL_DSI_ERROR_RX;
    }
    
    if((ErrorStatus1 & DSI_ERROR_ECC_MASK) != RESET)
    {
      hdsi->ErrorCode |= HAL_DSI_ERROR_ECC;
    }
    
    if((ErrorStatus1 & DSI_ERROR_CRC_MASK) != RESET)
    {
      hdsi->ErrorCode |= HAL_DSI_ERROR_CRC;
    }
    
    if((ErrorStatus1 & DSI_ERROR_PSE_MASK) != RESET)
    {
      hdsi->ErrorCode |= HAL_DSI_ERROR_PSE;
    }
    
    if((ErrorStatus1 & DSI_ERROR_EOT_MASK) != RESET)
    {
      hdsi->ErrorCode |= HAL_DSI_ERROR_EOT;
    }
    
    if((ErrorStatus1 & DSI_ERROR_OVF_MASK) != RESET)
    {
      hdsi->ErrorCode |= HAL_DSI_ERROR_OVF;
    }
    
    if((ErrorStatus1 & DSI_ERROR_GEN_MASK) != RESET)
    {
      hdsi->ErrorCode |= HAL_DSI_ERROR_GEN;
    }
    
    /* Check only selected errors */
    if(hdsi->ErrorCode != HAL_DSI_ERROR_NONE)
    {
      /* DSI error interrupt user callback */
      HAL_DSI_ErrorCallback(hdsi);
    }
  }
}

/**
  * @brief  Tearing Effect DSI callback.
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval None
  */
__weak void HAL_DSI_TearingEffectCallback(DSI_HandleTypeDef *hdsi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdsi);
 
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DSI_TearingEffectCallback could be implemented in the user file
   */
}

/**
  * @brief  End of Refresh DSI callback.
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval None
  */
__weak void HAL_DSI_EndOfRefreshCallback(DSI_HandleTypeDef *hdsi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdsi);
 
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DSI_EndOfRefreshCallback could be implemented in the user file
   */
}

/**
  * @brief  Operation Error DSI callback.
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval None
  */
__weak void HAL_DSI_ErrorCallback(DSI_HandleTypeDef *hdsi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdsi);
 
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DSI_ErrorCallback could be implemented in the user file
   */
}

/**
  * @}
  */

/** @defgroup DSI_Group3 Peripheral Control functions
 *  @brief    Peripheral Control functions 
 *
@verbatim
 ===============================================================================
                    ##### Peripheral Control functions #####
 ===============================================================================

@endverbatim
  * @{
  */

/**
  * @brief  Configure the Generic interface read-back Virtual Channel ID.
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  VirtualChannelID Virtual channel ID
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_SetGenericVCID(DSI_HandleTypeDef *hdsi, uint32_t VirtualChannelID)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Update the GVCID register */
  hdsi->Instance->GVCIDR &= ~DSI_GVCIDR_VCID;
  hdsi->Instance->GVCIDR |= VirtualChannelID;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Select video mode and configure the corresponding parameters
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  VidCfg pointer to a DSI_VidCfgTypeDef structure that contains
  *                 the DSI video mode configuration parameters
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ConfigVideoMode(DSI_HandleTypeDef *hdsi, DSI_VidCfgTypeDef *VidCfg)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check the parameters */
  assert_param(IS_DSI_COLOR_CODING(VidCfg->ColorCoding));
  assert_param(IS_DSI_VIDEO_MODE_TYPE(VidCfg->Mode));
  assert_param(IS_DSI_LP_COMMAND(VidCfg->LPCommandEnable));
  assert_param(IS_DSI_LP_HFP(VidCfg->LPHorizontalFrontPorchEnable));
  assert_param(IS_DSI_LP_HBP(VidCfg->LPHorizontalBackPorchEnable));
  assert_param(IS_DSI_LP_VACTIVE(VidCfg->LPVerticalActiveEnable));
  assert_param(IS_DSI_LP_VFP(VidCfg->LPVerticalFrontPorchEnable));
  assert_param(IS_DSI_LP_VBP(VidCfg->LPVerticalBackPorchEnable));
  assert_param(IS_DSI_LP_VSYNC(VidCfg->LPVerticalSyncActiveEnable));
  assert_param(IS_DSI_FBTAA(VidCfg->FrameBTAAcknowledgeEnable));
  assert_param(IS_DSI_DE_POLARITY(VidCfg->DEPolarity));
  assert_param(IS_DSI_VSYNC_POLARITY(VidCfg->VSPolarity));
  assert_param(IS_DSI_HSYNC_POLARITY(VidCfg->HSPolarity));
  /* Check the LooselyPacked variant only in 18-bit mode */
  if(VidCfg->ColorCoding == DSI_RGB666)
  {
    assert_param(IS_DSI_LOOSELY_PACKED(VidCfg->LooselyPacked));
  }
  
  /* Select video mode by resetting CMDM and DSIM bits */
  hdsi->Instance->MCR &= ~DSI_MCR_CMDM;
  hdsi->Instance->WCFGR &= ~DSI_WCFGR_DSIM;
  
  /* Configure the video mode transmission type */
  hdsi->Instance->VMCR &= ~DSI_VMCR_VMT;
  hdsi->Instance->VMCR |= VidCfg->Mode;
  
  /* Configure the video packet size */
  hdsi->Instance->VPCR &= ~DSI_VPCR_VPSIZE;
  hdsi->Instance->VPCR |= VidCfg->PacketSize;
  
  /* Set the chunks number to be transmitted through the DSI link */
  hdsi->Instance->VCCR &= ~DSI_VCCR_NUMC;
  hdsi->Instance->VCCR |= VidCfg->NumberOfChunks;
  
  /* Set the size of the null packet */
  hdsi->Instance->VNPCR &= ~DSI_VNPCR_NPSIZE;
  hdsi->Instance->VNPCR |= VidCfg->NullPacketSize;
  
  /* Select the virtual channel for the LTDC interface traffic */
  hdsi->Instance->LVCIDR &= ~DSI_LVCIDR_VCID;
  hdsi->Instance->LVCIDR |= VidCfg->VirtualChannelID;
  
  /* Configure the polarity of control signals */
  hdsi->Instance->LPCR &= ~(DSI_LPCR_DEP | DSI_LPCR_VSP | DSI_LPCR_HSP);
  hdsi->Instance->LPCR |= (VidCfg->DEPolarity | VidCfg->VSPolarity | VidCfg->HSPolarity);
  
  /* Select the color coding for the host */
  hdsi->Instance->LCOLCR &= ~DSI_LCOLCR_COLC;
  hdsi->Instance->LCOLCR |= VidCfg->ColorCoding;
    
  /* Select the color coding for the wrapper */
  hdsi->Instance->WCFGR &= ~DSI_WCFGR_COLMUX;
  hdsi->Instance->WCFGR |= ((VidCfg->ColorCoding)<<1);
  
  /* Enable/disable the loosely packed variant to 18-bit configuration */
  if(VidCfg->ColorCoding == DSI_RGB666)
  {
    hdsi->Instance->LCOLCR &= ~DSI_LCOLCR_LPE;
    hdsi->Instance->LCOLCR |= VidCfg->LooselyPacked;
  }
  
  /* Set the Horizontal Synchronization Active (HSA) in lane byte clock cycles */
  hdsi->Instance->VHSACR &= ~DSI_VHSACR_HSA;
  hdsi->Instance->VHSACR |= VidCfg->HorizontalSyncActive;
  
  /* Set the Horizontal Back Porch (HBP) in lane byte clock cycles */
  hdsi->Instance->VHBPCR &= ~DSI_VHBPCR_HBP;
  hdsi->Instance->VHBPCR |= VidCfg->HorizontalBackPorch;
  
  /* Set the total line time (HLINE=HSA+HBP+HACT+HFP) in lane byte clock cycles */
  hdsi->Instance->VLCR &= ~DSI_VLCR_HLINE;
  hdsi->Instance->VLCR |= VidCfg->HorizontalLine;
  
  /* Set the Vertical Synchronization Active (VSA) */
  hdsi->Instance->VVSACR &= ~DSI_VVSACR_VSA;
  hdsi->Instance->VVSACR |= VidCfg->VerticalSyncActive;
  
  /* Set the Vertical Back Porch (VBP)*/
  hdsi->Instance->VVBPCR &= ~DSI_VVBPCR_VBP;
  hdsi->Instance->VVBPCR |= VidCfg->VerticalBackPorch;
  
  /* Set the Vertical Front Porch (VFP)*/
  hdsi->Instance->VVFPCR &= ~DSI_VVFPCR_VFP;
  hdsi->Instance->VVFPCR |= VidCfg->VerticalFrontPorch;
  
  /* Set the Vertical Active period*/
  hdsi->Instance->VVACR &= ~DSI_VVACR_VA;
  hdsi->Instance->VVACR |= VidCfg->VerticalActive;
  
  /* Configure the command transmission mode */
  hdsi->Instance->VMCR &= ~DSI_VMCR_LPCE;
  hdsi->Instance->VMCR |= VidCfg->LPCommandEnable;
  
  /* Low power largest packet size */
  hdsi->Instance->LPMCR &= ~DSI_LPMCR_LPSIZE;
  hdsi->Instance->LPMCR |= ((VidCfg->LPLargestPacketSize)<<16);
  
  /* Low power VACT largest packet size */
  hdsi->Instance->LPMCR &= ~DSI_LPMCR_VLPSIZE;
  hdsi->Instance->LPMCR |= VidCfg->LPVACTLargestPacketSize;
  
  /* Enable LP transition in HFP period */
  hdsi->Instance->VMCR &= ~DSI_VMCR_LPHFPE;
  hdsi->Instance->VMCR |= VidCfg->LPHorizontalFrontPorchEnable;
  
  /* Enable LP transition in HBP period */
  hdsi->Instance->VMCR &= ~DSI_VMCR_LPHBPE;
  hdsi->Instance->VMCR |= VidCfg->LPHorizontalBackPorchEnable;
  
  /* Enable LP transition in VACT period */
  hdsi->Instance->VMCR &= ~DSI_VMCR_LPVAE;
  hdsi->Instance->VMCR |= VidCfg->LPVerticalActiveEnable;
  
  /* Enable LP transition in VFP period */
  hdsi->Instance->VMCR &= ~DSI_VMCR_LPVFPE;
  hdsi->Instance->VMCR |= VidCfg->LPVerticalFrontPorchEnable;
  
  /* Enable LP transition in VBP period */
  hdsi->Instance->VMCR &= ~DSI_VMCR_LPVBPE;
  hdsi->Instance->VMCR |= VidCfg->LPVerticalBackPorchEnable;
  
  /* Enable LP transition in vertical sync period */
  hdsi->Instance->VMCR &= ~DSI_VMCR_LPVSAE;
  hdsi->Instance->VMCR |= VidCfg->LPVerticalSyncActiveEnable;
  
  /* Enable the request for an acknowledge response at the end of a frame */
  hdsi->Instance->VMCR &= ~DSI_VMCR_FBTAAE;
  hdsi->Instance->VMCR |= VidCfg->FrameBTAAcknowledgeEnable;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Select adapted command mode and configure the corresponding parameters
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  CmdCfg pointer to a DSI_CmdCfgTypeDef structure that contains
  *                 the DSI command mode configuration parameters
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ConfigAdaptedCommandMode(DSI_HandleTypeDef *hdsi, DSI_CmdCfgTypeDef *CmdCfg)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check the parameters */
  assert_param(IS_DSI_COLOR_CODING(CmdCfg->ColorCoding));
  assert_param(IS_DSI_TE_SOURCE(CmdCfg->TearingEffectSource));
  assert_param(IS_DSI_TE_POLARITY(CmdCfg->TearingEffectPolarity));
  assert_param(IS_DSI_AUTOMATIC_REFRESH(CmdCfg->AutomaticRefresh));
  assert_param(IS_DSI_VS_POLARITY(CmdCfg->VSyncPol));
  assert_param(IS_DSI_TE_ACK_REQUEST(CmdCfg->TEAcknowledgeRequest));
  assert_param(IS_DSI_DE_POLARITY(CmdCfg->DEPolarity));
  assert_param(IS_DSI_VSYNC_POLARITY(CmdCfg->VSPolarity));
  assert_param(IS_DSI_HSYNC_POLARITY(CmdCfg->HSPolarity));
  
  /* Select command mode by setting CMDM and DSIM bits */
  hdsi->Instance->MCR |= DSI_MCR_CMDM;
  hdsi->Instance->WCFGR &= ~DSI_WCFGR_DSIM;
  hdsi->Instance->WCFGR |= DSI_WCFGR_DSIM;
  
  /* Select the virtual channel for the LTDC interface traffic */
  hdsi->Instance->LVCIDR &= ~DSI_LVCIDR_VCID;
  hdsi->Instance->LVCIDR |= CmdCfg->VirtualChannelID;
  
  /* Configure the polarity of control signals */
  hdsi->Instance->LPCR &= ~(DSI_LPCR_DEP | DSI_LPCR_VSP | DSI_LPCR_HSP);
  hdsi->Instance->LPCR |= (CmdCfg->DEPolarity | CmdCfg->VSPolarity | CmdCfg->HSPolarity);
  
  /* Select the color coding for the host */
  hdsi->Instance->LCOLCR &= ~DSI_LCOLCR_COLC;
  hdsi->Instance->LCOLCR |= CmdCfg->ColorCoding;
    
  /* Select the color coding for the wrapper */
  hdsi->Instance->WCFGR &= ~DSI_WCFGR_COLMUX;
  hdsi->Instance->WCFGR |= ((CmdCfg->ColorCoding)<<1);
  
  /* Configure the maximum allowed size for write memory command */
  hdsi->Instance->LCCR &= ~DSI_LCCR_CMDSIZE;
  hdsi->Instance->LCCR |= CmdCfg->CommandSize;
  
  /* Configure the tearing effect source and polarity and select the refresh mode */
  hdsi->Instance->WCFGR &= ~(DSI_WCFGR_TESRC | DSI_WCFGR_TEPOL | DSI_WCFGR_AR | DSI_WCFGR_VSPOL);
  hdsi->Instance->WCFGR |= (CmdCfg->TearingEffectSource | CmdCfg->TearingEffectPolarity | CmdCfg->AutomaticRefresh | CmdCfg->VSyncPol);
  
  /* Configure the tearing effect acknowledge request */
  hdsi->Instance->CMCR &= ~DSI_CMCR_TEARE;
  hdsi->Instance->CMCR |= CmdCfg->TEAcknowledgeRequest;
  
  /* Enable the Tearing Effect interrupt */
  __HAL_DSI_ENABLE_IT(hdsi, DSI_IT_TE);
  
  /* Enable the End of Refresh interrupt */
  __HAL_DSI_ENABLE_IT(hdsi, DSI_IT_ER);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Configure command transmission mode: High-speed or Low-power
  *         and enable/disable acknowledge request after packet transmission
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  LPCmd pointer to a DSI_LPCmdTypeDef structure that contains
  *                the DSI command transmission mode configuration parameters
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ConfigCommand(DSI_HandleTypeDef *hdsi, DSI_LPCmdTypeDef *LPCmd)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  assert_param(IS_DSI_LP_GSW0P(LPCmd->LPGenShortWriteNoP));
  assert_param(IS_DSI_LP_GSW1P(LPCmd->LPGenShortWriteOneP));
  assert_param(IS_DSI_LP_GSW2P(LPCmd->LPGenShortWriteTwoP));
  assert_param(IS_DSI_LP_GSR0P(LPCmd->LPGenShortReadNoP));
  assert_param(IS_DSI_LP_GSR1P(LPCmd->LPGenShortReadOneP));
  assert_param(IS_DSI_LP_GSR2P(LPCmd->LPGenShortReadTwoP));
  assert_param(IS_DSI_LP_GLW(LPCmd->LPGenLongWrite));
  assert_param(IS_DSI_LP_DSW0P(LPCmd->LPDcsShortWriteNoP));
  assert_param(IS_DSI_LP_DSW1P(LPCmd->LPDcsShortWriteOneP));
  assert_param(IS_DSI_LP_DSR0P(LPCmd->LPDcsShortReadNoP));
  assert_param(IS_DSI_LP_DLW(LPCmd->LPDcsLongWrite));
  assert_param(IS_DSI_LP_MRDP(LPCmd->LPMaxReadPacket));
  assert_param(IS_DSI_ACK_REQUEST(LPCmd->AcknowledgeRequest));
  
  /* Select High-speed or Low-power for command transmission */
  hdsi->Instance->CMCR &= ~(DSI_CMCR_GSW0TX |\
                            DSI_CMCR_GSW1TX |\
                            DSI_CMCR_GSW2TX |\
                            DSI_CMCR_GSR0TX |\
                            DSI_CMCR_GSR1TX |\
                            DSI_CMCR_GSR2TX |\
                            DSI_CMCR_GLWTX  |\
                            DSI_CMCR_DSW0TX |\
                            DSI_CMCR_DSW1TX |\
                            DSI_CMCR_DSR0TX |\
                            DSI_CMCR_DLWTX  |\
                            DSI_CMCR_MRDPS);
  hdsi->Instance->CMCR |= (LPCmd->LPGenShortWriteNoP  |\
                           LPCmd->LPGenShortWriteOneP |\
                           LPCmd->LPGenShortWriteTwoP |\
                           LPCmd->LPGenShortReadNoP   |\
                           LPCmd->LPGenShortReadOneP  |\
                           LPCmd->LPGenShortReadTwoP  |\
                           LPCmd->LPGenLongWrite      |\
                           LPCmd->LPDcsShortWriteNoP  |\
                           LPCmd->LPDcsShortWriteOneP |\
                           LPCmd->LPDcsShortReadNoP   |\
                           LPCmd->LPDcsLongWrite      |\
                           LPCmd->LPMaxReadPacket);
  
  /* Configure the acknowledge request after each packet transmission */
  hdsi->Instance->CMCR &= ~DSI_CMCR_ARE;
  hdsi->Instance->CMCR |= LPCmd->AcknowledgeRequest;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Configure the flow control parameters
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  FlowControl flow control feature(s) to be enabled.
  *                      This parameter can be any combination of @ref DSI_FlowControl.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ConfigFlowControl(DSI_HandleTypeDef *hdsi, uint32_t FlowControl)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check the parameters */
  assert_param(IS_DSI_FLOW_CONTROL(FlowControl));
  
  /* Set the DSI Host Protocol Configuration Register */
  hdsi->Instance->PCR &= ~DSI_FLOW_CONTROL_ALL;
  hdsi->Instance->PCR |= FlowControl;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Configure the DSI PHY timer parameters
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  PhyTimers DSI_PHY_TimerTypeDef structure that contains
  *                    the DSI PHY timing parameters
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ConfigPhyTimer(DSI_HandleTypeDef *hdsi, DSI_PHY_TimerTypeDef *PhyTimers)
{
  uint32_t maxTime;
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  maxTime = (PhyTimers->ClockLaneLP2HSTime > PhyTimers->ClockLaneHS2LPTime)? PhyTimers->ClockLaneLP2HSTime: PhyTimers->ClockLaneHS2LPTime;

  /* Clock lane timer configuration */

  /* In Automatic Clock Lane control mode, the DSI Host can turn off the clock lane between two
     High-Speed transmission.
     To do so, the DSI Host calculates the time required for the clock lane to change from HighSpeed
     to Low-Power and from Low-Power to High-Speed.
     This timings are configured by the HS2LP_TIME and LP2HS_TIME in the DSI Host Clock Lane Timer Configuration Register (DSI_CLTCR).
     But the DSI Host is not calculating LP2HS_TIME + HS2LP_TIME but 2 x HS2LP_TIME.

     Workaround : Configure HS2LP_TIME and LP2HS_TIME with the same value being the max of HS2LP_TIME or LP2HS_TIME.
  */
  hdsi->Instance->CLTCR &= ~(DSI_CLTCR_LP2HS_TIME | DSI_CLTCR_HS2LP_TIME);
  hdsi->Instance->CLTCR |= (maxTime | ((maxTime)<<16));
  
  /* Data lane timer configuration */
  hdsi->Instance->DLTCR &= ~(DSI_DLTCR_MRD_TIME | DSI_DLTCR_LP2HS_TIME | DSI_DLTCR_HS2LP_TIME);
  hdsi->Instance->DLTCR |= (PhyTimers->DataLaneMaxReadTime | ((PhyTimers->DataLaneLP2HSTime)<<16) | ((PhyTimers->DataLaneHS2LPTime)<<24));
  
  /* Configure the wait period to request HS transmission after a stop state */
  hdsi->Instance->PCONFR &= ~DSI_PCONFR_SW_TIME;
  hdsi->Instance->PCONFR |= ((PhyTimers->StopWaitTime)<<8);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Configure the DSI HOST timeout parameters
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  HostTimeouts DSI_HOST_TimeoutTypeDef structure that contains
  *                       the DSI host timeout parameters
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ConfigHostTimeouts(DSI_HandleTypeDef *hdsi, DSI_HOST_TimeoutTypeDef *HostTimeouts)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Set the timeout clock division factor */
  hdsi->Instance->CCR &= ~DSI_CCR_TOCKDIV;
  hdsi->Instance->CCR |= ((HostTimeouts->TimeoutCkdiv)<<8);
  
  /* High-speed transmission timeout */
  hdsi->Instance->TCCR[0] &= ~DSI_TCCR0_HSTX_TOCNT;
  hdsi->Instance->TCCR[0] |= ((HostTimeouts->HighSpeedTransmissionTimeout)<<16);
  
  /* Low-power reception timeout */
  hdsi->Instance->TCCR[0] &= ~DSI_TCCR0_LPRX_TOCNT;
  hdsi->Instance->TCCR[0] |= HostTimeouts->LowPowerReceptionTimeout;
  
  /* High-speed read timeout */
  hdsi->Instance->TCCR[1] &= ~DSI_TCCR1_HSRD_TOCNT;
  hdsi->Instance->TCCR[1] |= HostTimeouts->HighSpeedReadTimeout;
  
  /* Low-power read timeout */
  hdsi->Instance->TCCR[2] &= ~DSI_TCCR2_LPRD_TOCNT;
  hdsi->Instance->TCCR[2] |= HostTimeouts->LowPowerReadTimeout;
  
  /* High-speed write timeout */
  hdsi->Instance->TCCR[3] &= ~DSI_TCCR3_HSWR_TOCNT;
  hdsi->Instance->TCCR[3] |= HostTimeouts->HighSpeedWriteTimeout;
  
  /* High-speed write presp mode */
  hdsi->Instance->TCCR[3] &= ~DSI_TCCR3_PM;
  hdsi->Instance->TCCR[3] |= HostTimeouts->HighSpeedWritePrespMode;
  
  /* Low-speed write timeout */
  hdsi->Instance->TCCR[4] &= ~DSI_TCCR4_LPWR_TOCNT;
  hdsi->Instance->TCCR[4] |= HostTimeouts->LowPowerWriteTimeout;
  
  /* BTA timeout */
  hdsi->Instance->TCCR[5] &= ~DSI_TCCR5_BTA_TOCNT;
  hdsi->Instance->TCCR[5] |= HostTimeouts->BTATimeout;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Start the DSI module
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_Start(DSI_HandleTypeDef *hdsi)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Enable the DSI host */
  __HAL_DSI_ENABLE(hdsi);
  
  /* Enable the DSI wrapper */
  __HAL_DSI_WRAPPER_ENABLE(hdsi);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Stop the DSI module
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_Stop(DSI_HandleTypeDef *hdsi)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Disable the DSI host */
  __HAL_DSI_DISABLE(hdsi);
  
  /* Disable the DSI wrapper */
  __HAL_DSI_WRAPPER_DISABLE(hdsi);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Refresh the display in command mode
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_Refresh(DSI_HandleTypeDef *hdsi)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Update the display */
  hdsi->Instance->WCR |= DSI_WCR_LTDCEN;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Controls the display color mode in Video mode
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  ColorMode Color mode (full or 8-colors).
  *                    This parameter can be any value of @ref DSI_Color_Mode
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ColorMode(DSI_HandleTypeDef *hdsi, uint32_t ColorMode)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check the parameters */
  assert_param(IS_DSI_COLOR_MODE(ColorMode));
  
  /* Update the display color mode */
  hdsi->Instance->WCR &= ~DSI_WCR_COLM;
  hdsi->Instance->WCR |= ColorMode;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Control the display shutdown in Video mode
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  Shutdown Shut-down (Display-ON or Display-OFF).
  *                   This parameter can be any value of @ref DSI_ShutDown
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_Shutdown(DSI_HandleTypeDef *hdsi, uint32_t Shutdown)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check the parameters */
  assert_param(IS_DSI_SHUT_DOWN(Shutdown));
  
  /* Update the display Shutdown */
  hdsi->Instance->WCR &= ~DSI_WCR_SHTDN;
  hdsi->Instance->WCR |= Shutdown;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  DCS or Generic short write command
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  ChannelID Virtual channel ID.
  * @param  Mode DSI short packet data type.
  *               This parameter can be any value of @ref DSI_SHORT_WRITE_PKT_Data_Type.
  * @param  Param1 DSC command or first generic parameter.
  *                 This parameter can be any value of @ref DSI_DCS_Command or a
  *                 generic command code.
  * @param  Param2 DSC parameter or second generic parameter.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ShortWrite(DSI_HandleTypeDef *hdsi,
                                     uint32_t ChannelID,
                                     uint32_t Mode,
                                     uint32_t Param1,
                                     uint32_t Param2)
{
  uint32_t tickstart = 0;

  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check the parameters */
  assert_param(IS_DSI_SHORT_WRITE_PACKET_TYPE(Mode));
  
  /* Get tick */ 
  tickstart = HAL_GetTick();
  
  /* Wait for Command FIFO Empty */
  while((hdsi->Instance->GPSR & DSI_GPSR_CMDFE) == 0)
  {
    /* Check for the Timeout */
    if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
    {
      /* Process Unlocked */
      __HAL_UNLOCK(hdsi);
      
      return HAL_TIMEOUT;
    }
  }
  
  /* Configure the packet to send a short DCS command with 0 or 1 parameter */
  DSI_ConfigPacketHeader(hdsi->Instance,
                         ChannelID,
                         Mode,
                         Param1,
                         Param2);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  DCS or Generic long write command
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  ChannelID Virtual channel ID.
  * @param  Mode DSI long packet data type.
  *               This parameter can be any value of @ref DSI_LONG_WRITE_PKT_Data_Type.
  * @param  NbParams Number of parameters.
  * @param  Param1 DSC command or first generic parameter.
  *                 This parameter can be any value of @ref DSI_DCS_Command or a 
  *                 generic command code
  * @param  ParametersTable Pointer to parameter values table.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_LongWrite(DSI_HandleTypeDef *hdsi,
                                    uint32_t ChannelID,
                                    uint32_t Mode,
                                    uint32_t NbParams,
                                    uint32_t Param1,
                                    uint8_t* ParametersTable)
{
  uint32_t uicounter = 0;
  uint32_t tickstart = 0;
  
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check the parameters */
  assert_param(IS_DSI_LONG_WRITE_PACKET_TYPE(Mode));
  
  /* Get tick */ 
  tickstart = HAL_GetTick();
  
  /* Wait for Command FIFO Empty */
  while((hdsi->Instance->GPSR & DSI_GPSR_CMDFE) == RESET)
  {
    /* Check for the Timeout */
    if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
    {
      /* Process Unlocked */
      __HAL_UNLOCK(hdsi);
      
      return HAL_TIMEOUT;
    }
  }
  
  /* Set the DCS code hexadecimal on payload byte 1, and the other parameters on the write FIFO command*/
  while(uicounter < NbParams)
  {
    if(uicounter == 0x00)
    {
      hdsi->Instance->GPDR=(Param1 | \
                            ((uint32_t)(*(ParametersTable + uicounter)) << 8) | \
                            ((uint32_t)(*(ParametersTable + uicounter+1))<<16) | \
                            ((uint32_t)(*(ParametersTable + uicounter+2))<<24));
      uicounter += 3;
    }
    else
    {
      hdsi->Instance->GPDR=((uint32_t)(*(ParametersTable + uicounter)) | \
                            ((uint32_t)(*(ParametersTable + uicounter+1)) << 8) | \
                            ((uint32_t)(*(ParametersTable + uicounter+2)) << 16) | \
                            ((uint32_t)(*(ParametersTable + uicounter+3)) << 24));
      uicounter+=4;
    }
  }
  
  /* Configure the packet to send a long DCS command */
  DSI_ConfigPacketHeader(hdsi->Instance,
                         ChannelID,
                         Mode,
                         ((NbParams+1)&0x00FF),
                         (((NbParams+1)&0xFF00)>>8));
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Read command (DCS or generic)
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  ChannelNbr Virtual channel ID
  * @param  Array pointer to a buffer to store the payload of a read back operation.
  * @param  Size Data size to be read (in byte).
  * @param  Mode DSI read packet data type.
  *               This parameter can be any value of @ref DSI_SHORT_READ_PKT_Data_Type.
  * @param  DCSCmd DCS get/read command.
  * @param  ParametersTable Pointer to parameter values table.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_Read(DSI_HandleTypeDef *hdsi,
                               uint32_t ChannelNbr,
                               uint8_t* Array,
                               uint32_t Size,
                               uint32_t Mode,
                               uint32_t DCSCmd,
                               uint8_t* ParametersTable)
{
  uint32_t tickstart = 0;
  
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check the parameters */
  assert_param(IS_DSI_READ_PACKET_TYPE(Mode));
  
  if(Size > 2)
  {
    /* set max return packet size */
    HAL_DSI_ShortWrite(hdsi, ChannelNbr, DSI_MAX_RETURN_PKT_SIZE, ((Size)&0xFF), (((Size)>>8)&0xFF));
  }
  
  /* Configure the packet to read command */
  if (Mode == DSI_DCS_SHORT_PKT_READ)
  {
    DSI_ConfigPacketHeader(hdsi->Instance, ChannelNbr, Mode, DCSCmd, 0);
  }
  else if (Mode == DSI_GEN_SHORT_PKT_READ_P0)
  {
    DSI_ConfigPacketHeader(hdsi->Instance, ChannelNbr, Mode, 0, 0);
  }
  else if (Mode == DSI_GEN_SHORT_PKT_READ_P1)
  {
    DSI_ConfigPacketHeader(hdsi->Instance, ChannelNbr, Mode, ParametersTable[0], 0);
  }
  else if (Mode == DSI_GEN_SHORT_PKT_READ_P2)
  {
    DSI_ConfigPacketHeader(hdsi->Instance, ChannelNbr, Mode, ParametersTable[0], ParametersTable[1]);
  }
  else
  {
    /* Process Unlocked */
    __HAL_UNLOCK(hdsi);
      
    return HAL_ERROR;    
  }
  
  /* Get tick */ 
  tickstart = HAL_GetTick();
  
  /* Check that the payload read FIFO is not empty */
  while((hdsi->Instance->GPSR & DSI_GPSR_PRDFE) == DSI_GPSR_PRDFE)
  {
    /* Check for the Timeout */
    if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
    {
      /* Process Unlocked */
      __HAL_UNLOCK(hdsi);
      
      return HAL_TIMEOUT;
    }
  }
  
  /* Get the first byte */
  *((uint32_t *)Array) = (hdsi->Instance->GPDR);
  if (Size > 4)
  {
    Size -= 4;
    Array += 4;
  }
  else
  {
    /* Process unlocked */
    __HAL_UNLOCK(hdsi);
    
    return HAL_OK;
  }
  
  /* Get tick */ 
  tickstart = HAL_GetTick();
  
  /* Get the remaining bytes if any */
  while(((int)(Size)) > 0)
  {
    if((hdsi->Instance->GPSR & DSI_GPSR_PRDFE) == 0)
    {
      *((uint32_t *)Array) = (hdsi->Instance->GPDR);
      Size -= 4;
      Array += 4;
    }
    
    /* Check for the Timeout */
    if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
    {
      /* Process Unlocked */
      __HAL_UNLOCK(hdsi);
      
      return HAL_TIMEOUT;
    }    
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Enter the ULPM (Ultra Low Power Mode) with the D-PHY PLL running
  *         (only data lanes are in ULPM)
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_EnterULPMData(DSI_HandleTypeDef *hdsi)
{
  uint32_t tickstart = 0;
  
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* ULPS Request on Data Lanes */
  hdsi->Instance->PUCR |= DSI_PUCR_URDL;
  
  /* Get tick */ 
  tickstart = HAL_GetTick();
  
  /* Wait until the D-PHY active lanes enter into ULPM */
  if((hdsi->Instance->PCONFR & DSI_PCONFR_NL) == DSI_ONE_DATA_LANE)
  {
	while((hdsi->Instance->PSR & DSI_PSR_UAN0) != RESET)
    {
      /* Check for the Timeout */
      if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
      {
        /* Process Unlocked */
        __HAL_UNLOCK(hdsi);
        
        return HAL_TIMEOUT;
      }
    }
  }
  else if ((hdsi->Instance->PCONFR & DSI_PCONFR_NL) == DSI_TWO_DATA_LANES)
  {
	while((hdsi->Instance->PSR & (DSI_PSR_UAN0 | DSI_PSR_UAN1)) != RESET)
    {
      /* Check for the Timeout */
      if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
      {
        /* Process Unlocked */
        __HAL_UNLOCK(hdsi);
        
        return HAL_TIMEOUT;
      }
    }
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Exit the ULPM (Ultra Low Power Mode) with the D-PHY PLL running
  *         (only data lanes are in ULPM)
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ExitULPMData(DSI_HandleTypeDef *hdsi)
{
  uint32_t tickstart = 0;
  
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Exit ULPS on Data Lanes */
  hdsi->Instance->PUCR |= DSI_PUCR_UEDL;
  
  /* Get tick */ 
  tickstart = HAL_GetTick();
  
  /* Wait until all active lanes exit ULPM */
  if((hdsi->Instance->PCONFR & DSI_PCONFR_NL) == DSI_ONE_DATA_LANE)
  {
	while((hdsi->Instance->PSR & DSI_PSR_UAN0) != DSI_PSR_UAN0)
    {
      /* Check for the Timeout */
      if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
      {
        /* Process Unlocked */
        __HAL_UNLOCK(hdsi);
        
        return HAL_TIMEOUT;
      }
    }
  }
  else if ((hdsi->Instance->PCONFR & DSI_PCONFR_NL) == DSI_TWO_DATA_LANES)
  {
	while((hdsi->Instance->PSR & (DSI_PSR_UAN0 | DSI_PSR_UAN1)) != (DSI_PSR_UAN0 | DSI_PSR_UAN1))
    {
      /* Check for the Timeout */
      if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
      {
        /* Process Unlocked */
        __HAL_UNLOCK(hdsi);
        
        return HAL_TIMEOUT;
      }
    }
  }
  
  /* De-assert the ULPM requests and the ULPM exit bits */
  hdsi->Instance->PUCR = 0;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Enter the ULPM (Ultra Low Power Mode) with the D-PHY PLL turned off
  *         (both data and clock lanes are in ULPM)
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_EnterULPM(DSI_HandleTypeDef *hdsi)
{
  uint32_t tickstart = 0;
  
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Clock lane configuration: no more HS request */
  hdsi->Instance->CLCR &= ~DSI_CLCR_DPCC;
  
  /* Use system PLL as byte lane clock source before stopping DSIPHY clock source */
  __HAL_RCC_DSI_CONFIG(RCC_DSICLKSOURCE_PLLR);
  
  /* ULPS Request on Clock and Data Lanes */
  hdsi->Instance->PUCR |= (DSI_PUCR_URCL | DSI_PUCR_URDL);
  
  /* Get tick */ 
  tickstart = HAL_GetTick();
  
  /* Wait until all active lanes exit ULPM */
  if((hdsi->Instance->PCONFR & DSI_PCONFR_NL) == DSI_ONE_DATA_LANE)
  {
	while((hdsi->Instance->PSR & (DSI_PSR_UAN0 | DSI_PSR_UANC)) != RESET)
    {
      /* Check for the Timeout */
      if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
      {
        /* Process Unlocked */
        __HAL_UNLOCK(hdsi);
        
        return HAL_TIMEOUT;
      }
    }
  }
  else if ((hdsi->Instance->PCONFR & DSI_PCONFR_NL) == DSI_TWO_DATA_LANES)
  {
	while((hdsi->Instance->PSR & (DSI_PSR_UAN0 | DSI_PSR_UAN1 | DSI_PSR_UANC)) != RESET)
    {
      /* Check for the Timeout */
      if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
      {
        /* Process Unlocked */
        __HAL_UNLOCK(hdsi);
        
        return HAL_TIMEOUT;
      }
    }
  }
  
  /* Turn off the DSI PLL */
  __HAL_DSI_PLL_DISABLE(hdsi);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Exit the ULPM (Ultra Low Power Mode) with the D-PHY PLL turned off
  *         (both data and clock lanes are in ULPM)
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ExitULPM(DSI_HandleTypeDef *hdsi)
{
  uint32_t tickstart = 0;
  
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Turn on the DSI PLL */
  __HAL_DSI_PLL_ENABLE(hdsi);
  
  /* Get tick */ 
  tickstart = HAL_GetTick();
  
  /* Wait for the lock of the PLL */
  while(__HAL_DSI_GET_FLAG(hdsi, DSI_FLAG_PLLLS) == RESET)
  {
    /* Check for the Timeout */
    if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
    {
      /* Process Unlocked */
      __HAL_UNLOCK(hdsi);
      
      return HAL_TIMEOUT;
    }
  }
  
  /* Exit ULPS on Clock and Data Lanes */
  hdsi->Instance->PUCR |= (DSI_PUCR_UECL | DSI_PUCR_UEDL);
  
  /* Get tick */ 
  tickstart = HAL_GetTick();
  
  /* Wait until all active lanes exit ULPM */
  if((hdsi->Instance->PCONFR & DSI_PCONFR_NL) == DSI_ONE_DATA_LANE)
  {
	while((hdsi->Instance->PSR & (DSI_PSR_UAN0 | DSI_PSR_UANC)) != (DSI_PSR_UAN0 | DSI_PSR_UANC))
    {
      /* Check for the Timeout */
      if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
      {
        /* Process Unlocked */
        __HAL_UNLOCK(hdsi);
        
        return HAL_TIMEOUT;
      }
    }
  }
  else if ((hdsi->Instance->PCONFR & DSI_PCONFR_NL) == DSI_TWO_DATA_LANES)
  {
	while((hdsi->Instance->PSR & (DSI_PSR_UAN0 | DSI_PSR_UAN1 | DSI_PSR_UANC)) != (DSI_PSR_UAN0 | DSI_PSR_UAN1 | DSI_PSR_UANC))
    {
      /* Check for the Timeout */
      if((HAL_GetTick() - tickstart ) > DSI_TIMEOUT_VALUE)
      {
        /* Process Unlocked */
        __HAL_UNLOCK(hdsi);
        
        return HAL_TIMEOUT;
      }
    }
  }
  
  /* De-assert the ULPM requests and the ULPM exit bits */
  hdsi->Instance->PUCR = 0;
  
  /* Switch the lanbyteclock source in the RCC from system PLL to D-PHY */
  __HAL_RCC_DSI_CONFIG(RCC_DSICLKSOURCE_DSIPHY);
  
  /* Restore clock lane configuration to HS */
  hdsi->Instance->CLCR |= DSI_CLCR_DPCC;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Start test pattern generation
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  Mode Pattern generator mode
  *          This parameter can be one of the following values:
  *           0 : Color bars (horizontal or vertical)
  *           1 : BER pattern (vertical only)
  * @param  Orientation Pattern generator orientation
  *          This parameter can be one of the following values:
  *           0 : Vertical color bars
  *           1 : Horizontal color bars
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_PatternGeneratorStart(DSI_HandleTypeDef *hdsi, uint32_t Mode, uint32_t Orientation)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Configure pattern generator mode and orientation */
  hdsi->Instance->VMCR &= ~(DSI_VMCR_PGM | DSI_VMCR_PGO);
  hdsi->Instance->VMCR |= ((Mode<<20) | (Orientation<<24));
  
  /* Enable pattern generator by setting PGE bit */
  hdsi->Instance->VMCR |= DSI_VMCR_PGE;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Stop test pattern generation
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_PatternGeneratorStop(DSI_HandleTypeDef *hdsi)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Disable pattern generator by clearing PGE bit */
  hdsi->Instance->VMCR &= ~DSI_VMCR_PGE;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Set Slew-Rate And Delay Tuning
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  CommDelay Communication delay to be adjusted.
  *                    This parameter can be any value of @ref DSI_Communication_Delay
  * @param  Lane select between clock or data lanes.
  *               This parameter can be any value of @ref DSI_Lane_Group
  * @param  Value Custom value of the slew-rate or delay
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_SetSlewRateAndDelayTuning(DSI_HandleTypeDef *hdsi, uint32_t CommDelay, uint32_t Lane, uint32_t Value)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check function parameters */
  assert_param(IS_DSI_COMMUNICATION_DELAY(CommDelay));
  assert_param(IS_DSI_LANE_GROUP(Lane));
  
  switch(CommDelay)
  {
  case DSI_SLEW_RATE_HSTX:
    if(Lane == DSI_CLOCK_LANE)
    {
      /* High-Speed Transmission Slew Rate Control on Clock Lane */
      hdsi->Instance->WPCR[1] &= ~DSI_WPCR1_HSTXSRCCL;
      hdsi->Instance->WPCR[1] |= Value<<16;
    }
    else if(Lane == DSI_DATA_LANES)
    {
      /* High-Speed Transmission Slew Rate Control on Data Lanes */
      hdsi->Instance->WPCR[1] &= ~DSI_WPCR1_HSTXSRCDL;
      hdsi->Instance->WPCR[1] |= Value<<18;
    }
    break;
  case DSI_SLEW_RATE_LPTX:
    if(Lane == DSI_CLOCK_LANE)
    {
      /* Low-Power transmission Slew Rate Compensation on Clock Lane */
      hdsi->Instance->WPCR[1] &= ~DSI_WPCR1_LPSRCCL;
      hdsi->Instance->WPCR[1] |= Value<<6;
    }
    else if(Lane == DSI_DATA_LANES)
    {
      /* Low-Power transmission Slew Rate Compensation on Data Lanes */
      hdsi->Instance->WPCR[1] &= ~DSI_WPCR1_LPSRCDL;
      hdsi->Instance->WPCR[1] |= Value<<8;
    }
    break;
  case DSI_HS_DELAY:
    if(Lane == DSI_CLOCK_LANE)
    {
      /* High-Speed Transmission Delay on Clock Lane */
      hdsi->Instance->WPCR[1] &= ~DSI_WPCR1_HSTXDCL;
      hdsi->Instance->WPCR[1] |= Value;
    }
    else if(Lane == DSI_DATA_LANES)
    {
      /* High-Speed Transmission Delay on Data Lanes */
      hdsi->Instance->WPCR[1] &= ~DSI_WPCR1_HSTXDDL;
      hdsi->Instance->WPCR[1] |= Value<<2;
    }
    break;
  default:
    break;
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Low-Power Reception Filter Tuning
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  Frequency cutoff frequency of low-pass filter at the input of LPRX
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_SetLowPowerRXFilter(DSI_HandleTypeDef *hdsi, uint32_t Frequency)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Low-Power RX low-pass Filtering Tuning */
  hdsi->Instance->WPCR[1] &= ~DSI_WPCR1_LPRXFT;
  hdsi->Instance->WPCR[1] |= Frequency<<25;
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Activate an additional current path on all lanes to meet the SDDTx parameter
  *         defined in the MIPI D-PHY specification
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  State ENABLE or DISABLE
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_SetSDD(DSI_HandleTypeDef *hdsi, FunctionalState State)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check function parameters */
  assert_param(IS_FUNCTIONAL_STATE(State));
  
  /* Activate/Disactivate additional current path on all lanes */
  hdsi->Instance->WPCR[1] &= ~DSI_WPCR1_SDDC;
  hdsi->Instance->WPCR[1] |= ((uint32_t)State << 12);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Custom lane pins configuration
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  CustomLane Function to be applyed on selected lane.
  *                     This parameter can be any value of @ref DSI_CustomLane
  * @param  Lane select between clock or data lane 0 or data lane 1.
  *               This parameter can be any value of @ref DSI_Lane_Select
  * @param  State ENABLE or DISABLE
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_SetLanePinsConfiguration(DSI_HandleTypeDef *hdsi, uint32_t CustomLane, uint32_t Lane, FunctionalState State)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check function parameters */
  assert_param(IS_DSI_CUSTOM_LANE(CustomLane));
  assert_param(IS_DSI_LANE(Lane));
  assert_param(IS_FUNCTIONAL_STATE(State));
  
  switch(CustomLane)
  {
  case DSI_SWAP_LANE_PINS:
    if(Lane == DSI_CLOCK_LANE)
    {
      /* Swap pins on clock lane */
      hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_SWCL;
      hdsi->Instance->WPCR[0] |= ((uint32_t)State << 6);
    }
    else if(Lane == DSI_DATA_LANE0)
    {
      /* Swap pins on data lane 0 */
      hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_SWDL0;
      hdsi->Instance->WPCR[0] |= ((uint32_t)State << 7);
    }
    else if(Lane == DSI_DATA_LANE1)
    {
      /* Swap pins on data lane 1 */
      hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_SWDL1;
      hdsi->Instance->WPCR[0] |= ((uint32_t)State << 8);
    }
    break;
  case DSI_INVERT_HS_SIGNAL:
    if(Lane == DSI_CLOCK_LANE)
    {
      /* Invert HS signal on clock lane */
      hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_HSICL;
      hdsi->Instance->WPCR[0] |= ((uint32_t)State << 9);
    }
    else if(Lane == DSI_DATA_LANE0)
    {
      /* Invert HS signal on data lane 0 */
      hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_HSIDL0;
      hdsi->Instance->WPCR[0] |= ((uint32_t)State << 10);
    }
    else if(Lane == DSI_DATA_LANE1)
    {
      /* Invert HS signal on data lane 1 */
      hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_HSIDL1;
      hdsi->Instance->WPCR[0] |= ((uint32_t)State << 11);
    }
    break;
  default:
    break;
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Set custom timing for the PHY
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  Timing PHY timing to be adjusted.
  *                 This parameter can be any value of @ref DSI_PHY_Timing
  * @param  State ENABLE or DISABLE
  * @param  Value Custom value of the timing
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_SetPHYTimings(DSI_HandleTypeDef *hdsi, uint32_t Timing, FunctionalState State, uint32_t Value)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check function parameters */
  assert_param(IS_DSI_PHY_TIMING(Timing));
  assert_param(IS_FUNCTIONAL_STATE(State));
  
  switch(Timing)
  {
  case DSI_TCLK_POST:
    /* Enable/Disable custom timing setting */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_TCLKPOSTEN;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 27);
    
    if(State)
    {
      /* Set custom value */
      hdsi->Instance->WPCR[4] &= ~DSI_WPCR4_TCLKPOST;
      hdsi->Instance->WPCR[4] |= Value & DSI_WPCR4_TCLKPOST;
    }
    
    break;
  case DSI_TLPX_CLK:
    /* Enable/Disable custom timing setting */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_TLPXCEN;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 26);
    
    if(State)
    {
      /* Set custom value */
      hdsi->Instance->WPCR[3] &= ~DSI_WPCR3_TLPXC;
      hdsi->Instance->WPCR[3] |= (Value << 24) & DSI_WPCR3_TLPXC;
    }
    
    break;
  case DSI_THS_EXIT:
    /* Enable/Disable custom timing setting */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_THSEXITEN;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 25);
    
    if(State)
    {
      /* Set custom value */
      hdsi->Instance->WPCR[3] &= ~DSI_WPCR3_THSEXIT;
      hdsi->Instance->WPCR[3] |= (Value << 16) & DSI_WPCR3_THSEXIT;
    }
    
    break;
  case DSI_TLPX_DATA:
    /* Enable/Disable custom timing setting */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_TLPXDEN;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 24);
    
    if(State)
    {
      /* Set custom value */
      hdsi->Instance->WPCR[3] &= ~DSI_WPCR3_TLPXD;
      hdsi->Instance->WPCR[3] |= (Value << 8) & DSI_WPCR3_TLPXD;
    }
    
    break;
  case DSI_THS_ZERO:
    /* Enable/Disable custom timing setting */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_THSZEROEN;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 23);
    
    if(State)
    {
      /* Set custom value */
      hdsi->Instance->WPCR[3] &= ~DSI_WPCR3_THSZERO;
      hdsi->Instance->WPCR[3] |= Value & DSI_WPCR3_THSZERO;
    }
    
    break;
  case DSI_THS_TRAIL:
    /* Enable/Disable custom timing setting */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_THSTRAILEN;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 22);
    
    if(State)
    {
      /* Set custom value */
      hdsi->Instance->WPCR[2] &= ~DSI_WPCR2_THSTRAIL;
      hdsi->Instance->WPCR[2] |= (Value << 24) & DSI_WPCR2_THSTRAIL;
    }
    
    break;
  case DSI_THS_PREPARE:
    /* Enable/Disable custom timing setting */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_THSPREPEN;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 21);
    
    if(State)
    {
      /* Set custom value */
      hdsi->Instance->WPCR[2] &= ~DSI_WPCR2_THSPREP;
      hdsi->Instance->WPCR[2] |= (Value << 16) & DSI_WPCR2_THSPREP;
    }
    
    break;
  case DSI_TCLK_ZERO:
    /* Enable/Disable custom timing setting */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_TCLKZEROEN;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 20);
    
    if(State)
    {
      /* Set custom value */
      hdsi->Instance->WPCR[2] &= ~DSI_WPCR2_TCLKZERO;
      hdsi->Instance->WPCR[2] |= (Value << 8) & DSI_WPCR2_TCLKZERO;
    }
    
    break;
  case DSI_TCLK_PREPARE:
    /* Enable/Disable custom timing setting */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_TCLKPREPEN;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 19);
    
    if(State)
    {
      /* Set custom value */
      hdsi->Instance->WPCR[2] &= ~DSI_WPCR2_TCLKPREP;
      hdsi->Instance->WPCR[2] |= Value & DSI_WPCR2_TCLKPREP;
    }
    
    break;
  default:
    break;
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Force the Clock/Data Lane in TX Stop Mode
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  Lane select between clock or data lanes.
  *               This parameter can be any value of @ref DSI_Lane_Group
  * @param  State ENABLE or DISABLE
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ForceTXStopMode(DSI_HandleTypeDef *hdsi, uint32_t Lane, FunctionalState State)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check function parameters */
  assert_param(IS_DSI_LANE_GROUP(Lane));
  assert_param(IS_FUNCTIONAL_STATE(State));
  
  if(Lane == DSI_CLOCK_LANE)
  {
    /* Force/Unforce the Clock Lane in TX Stop Mode */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_FTXSMCL;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 12);
  }
  else if(Lane == DSI_DATA_LANES)
  {
    /* Force/Unforce the Data Lanes in TX Stop Mode */
    hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_FTXSMDL;
    hdsi->Instance->WPCR[0] |= ((uint32_t)State << 13);
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Forces LP Receiver in Low-Power Mode
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  State ENABLE or DISABLE
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ForceRXLowPower(DSI_HandleTypeDef *hdsi, FunctionalState State)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check function parameters */
  assert_param(IS_FUNCTIONAL_STATE(State));
  
  /* Force/Unforce LP Receiver in Low-Power Mode */
  hdsi->Instance->WPCR[1] &= ~DSI_WPCR1_FLPRXLPM;
  hdsi->Instance->WPCR[1] |= ((uint32_t)State << 22);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Force Data Lanes in RX Mode after a BTA
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  State ENABLE or DISABLE
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_ForceDataLanesInRX(DSI_HandleTypeDef *hdsi, FunctionalState State)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check function parameters */
  assert_param(IS_FUNCTIONAL_STATE(State));
  
  /* Force Data Lanes in RX Mode */
  hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_TDDL;
  hdsi->Instance->WPCR[0] |= ((uint32_t)State << 16);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Enable a pull-down on the lanes to prevent from floating states when unused
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  State ENABLE or DISABLE
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_SetPullDown(DSI_HandleTypeDef *hdsi, FunctionalState State)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check function parameters */
  assert_param(IS_FUNCTIONAL_STATE(State));
  
  /* Enable/Disable pull-down on lanes */
  hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_PDEN;
  hdsi->Instance->WPCR[0] |= ((uint32_t)State << 18);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @brief  Switch off the contention detection on data lanes
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @param  State ENABLE or DISABLE
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DSI_SetContentionDetectionOff(DSI_HandleTypeDef *hdsi, FunctionalState State)
{
  /* Process locked */
  __HAL_LOCK(hdsi);
  
  /* Check function parameters */
  assert_param(IS_FUNCTIONAL_STATE(State));
  
  /* Contention Detection on Data Lanes OFF */
  hdsi->Instance->WPCR[0] &= ~DSI_WPCR0_CDOFFDL;
  hdsi->Instance->WPCR[0] |= ((uint32_t)State << 14);
  
  /* Process unlocked */
  __HAL_UNLOCK(hdsi);
  
  return HAL_OK;
}

/**
  * @}
  */

/** @defgroup DSI_Group4 Peripheral State and Errors functions
 *  @brief    Peripheral State and Errors functions 
 *
@verbatim   
 ===============================================================================
                  ##### Peripheral State and Errors functions #####
 ===============================================================================  
    [..]
    This subsection provides functions allowing to
      (+) Check the DSI state.
      (+) Get error code.  

@endverbatim
  * @{
  */ 

/**
  * @brief  Return the DSI state
  * @param  hdsi pointer to a DSI_HandleTypeDef structure that contains
  *               the configuration information for the DSI.
  * @retval HAL state
  */
HAL_DSI_StateTypeDef HAL_DSI_GetState(DSI_HandleTypeDef *hdsi)
{
  return hdsi->State;
}

/**
  * @}
  */

/**
  * @}
  */
#endif /*STM32F769xx | STM32F779xx */  
#endif /* HAL_DSI_MODULE_ENABLED */
/**
  * @}
  */

/**
  * @}
  */

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