147 lines
5.8 KiB
C
147 lines
5.8 KiB
C
/**
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******************************************************************************
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* @file stm32f7xx_hal_ltdc_ex.c
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* @author MCD Application Team
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* @brief LTDC Extension HAL module driver.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f7xx_hal.h"
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/** @addtogroup STM32F7xx_HAL_Driver
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* @{
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*/
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#if defined(HAL_LTDC_MODULE_ENABLED) && defined(HAL_DSI_MODULE_ENABLED)
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#if defined (LTDC) && defined (DSI)
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/** @defgroup LTDCEx LTDCEx
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* @brief LTDC HAL module driver
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @defgroup LTDCEx_Exported_Functions LTDC Extended Exported Functions
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* @{
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*/
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/** @defgroup LTDCEx_Exported_Functions_Group1 Initialization and Configuration functions
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* @brief Initialization and Configuration functions
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*
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@verbatim
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===============================================================================
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##### Initialization and Configuration functions #####
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===============================================================================
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[..] This section provides functions allowing to:
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(+) Initialize and configure the LTDC
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@endverbatim
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* @{
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*/
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/**
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* @brief Retrieve common parameters from DSI Video mode configuration structure
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* @param hltdc pointer to a LTDC_HandleTypeDef structure that contains
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* the configuration information for the LTDC.
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* @param VidCfg pointer to a DSI_VidCfgTypeDef structure that contains
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* the DSI video mode configuration parameters
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* @note The implementation of this function is taking into account the LTDC
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* polarities inversion as described in the current LTDC specification
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_LTDCEx_StructInitFromVideoConfig(LTDC_HandleTypeDef *hltdc, DSI_VidCfgTypeDef *VidCfg)
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{
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/* Retrieve signal polarities from DSI */
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/* The following polarity is inverted:
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LTDC_DEPOLARITY_AL <-> LTDC_DEPOLARITY_AH */
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/* Note 1 : Code in line w/ Current LTDC specification */
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hltdc->Init.DEPolarity = (VidCfg->DEPolarity == DSI_DATA_ENABLE_ACTIVE_HIGH) ? LTDC_DEPOLARITY_AL : LTDC_DEPOLARITY_AH;
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hltdc->Init.VSPolarity = (VidCfg->VSPolarity == DSI_VSYNC_ACTIVE_HIGH) ? LTDC_VSPOLARITY_AH : LTDC_VSPOLARITY_AL;
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hltdc->Init.HSPolarity = (VidCfg->HSPolarity == DSI_HSYNC_ACTIVE_HIGH) ? LTDC_HSPOLARITY_AH : LTDC_HSPOLARITY_AL;
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/* Note 2: Code to be used in case LTDC polarities inversion updated in the specification */
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/* hltdc->Init.DEPolarity = VidCfg->DEPolarity << 29;
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hltdc->Init.VSPolarity = VidCfg->VSPolarity << 29;
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hltdc->Init.HSPolarity = VidCfg->HSPolarity << 29; */
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/* Retrieve vertical timing parameters from DSI */
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hltdc->Init.VerticalSync = VidCfg->VerticalSyncActive - 1U;
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hltdc->Init.AccumulatedVBP = VidCfg->VerticalSyncActive + VidCfg->VerticalBackPorch - 1U;
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hltdc->Init.AccumulatedActiveH = VidCfg->VerticalSyncActive + VidCfg->VerticalBackPorch + VidCfg->VerticalActive - 1U;
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hltdc->Init.TotalHeigh = VidCfg->VerticalSyncActive + VidCfg->VerticalBackPorch + VidCfg->VerticalActive + VidCfg->VerticalFrontPorch - 1U;
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return HAL_OK;
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}
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/**
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* @brief Retrieve common parameters from DSI Adapted command mode configuration structure
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* @param hltdc pointer to a LTDC_HandleTypeDef structure that contains
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* the configuration information for the LTDC.
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* @param CmdCfg pointer to a DSI_CmdCfgTypeDef structure that contains
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* the DSI command mode configuration parameters
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* @note The implementation of this function is taking into account the LTDC
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* polarities inversion as described in the current LTDC specification
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_LTDCEx_StructInitFromAdaptedCommandConfig(LTDC_HandleTypeDef *hltdc, DSI_CmdCfgTypeDef *CmdCfg)
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{
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/* Retrieve signal polarities from DSI */
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/* The following polarities are inverted:
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LTDC_DEPOLARITY_AL <-> LTDC_DEPOLARITY_AH
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LTDC_VSPOLARITY_AL <-> LTDC_VSPOLARITY_AH
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LTDC_HSPOLARITY_AL <-> LTDC_HSPOLARITY_AH)*/
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/* Note 1 : Code in line w/ Current LTDC specification */
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hltdc->Init.DEPolarity = (CmdCfg->DEPolarity == DSI_DATA_ENABLE_ACTIVE_HIGH) ? LTDC_DEPOLARITY_AL : LTDC_DEPOLARITY_AH;
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hltdc->Init.VSPolarity = (CmdCfg->VSPolarity == DSI_VSYNC_ACTIVE_HIGH) ? LTDC_VSPOLARITY_AL : LTDC_VSPOLARITY_AH;
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hltdc->Init.HSPolarity = (CmdCfg->HSPolarity == DSI_HSYNC_ACTIVE_HIGH) ? LTDC_HSPOLARITY_AL : LTDC_HSPOLARITY_AH;
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/* Note 2: Code to be used in case LTDC polarities inversion updated in the specification */
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/* hltdc->Init.DEPolarity = CmdCfg->DEPolarity << 29;
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hltdc->Init.VSPolarity = CmdCfg->VSPolarity << 29;
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hltdc->Init.HSPolarity = CmdCfg->HSPolarity << 29; */
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return HAL_OK;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif /* LTDC && DSI */
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#endif /* HAL_LTCD_MODULE_ENABLED && HAL_DSI_MODULE_ENABLED */
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/**
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* @}
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*/
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