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151 lines
6.1 KiB
151 lines
6.1 KiB
/** |
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****************************************************************************** |
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* @file stm32f4xx_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) 2016 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 "stm32f4xx_hal.h" |
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/** @addtogroup STM32F4xx_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 == \ |
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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 + \ |
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VidCfg->VerticalActive - 1U; |
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hltdc->Init.TotalHeigh = VidCfg->VerticalSyncActive + VidCfg->VerticalBackPorch + \ |
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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 == \ |
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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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