diff options
Diffstat (limited to 'bsps/arm/stm32h7/hal/stm32h7xx_hal_ltdc_ex.c')
| -rw-r--r-- | bsps/arm/stm32h7/hal/stm32h7xx_hal_ltdc_ex.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/bsps/arm/stm32h7/hal/stm32h7xx_hal_ltdc_ex.c b/bsps/arm/stm32h7/hal/stm32h7xx_hal_ltdc_ex.c new file mode 100644 index 0000000000..b0bafd74cd --- /dev/null +++ b/bsps/arm/stm32h7/hal/stm32h7xx_hal_ltdc_ex.c @@ -0,0 +1,149 @@ +/**
+ ******************************************************************************
+ * @file stm32h7xx_hal_ltdc_ex.c
+ * @author MCD Application Team
+ * @brief LTDC Extension HAL module driver.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32h7xx_hal.h"
+
+/** @addtogroup STM32H7xx_HAL_Driver
+ * @{
+ */
+
+#if defined(HAL_LTDC_MODULE_ENABLED) && defined(HAL_DSI_MODULE_ENABLED)
+
+#if defined (LTDC) && defined (DSI)
+
+/** @defgroup LTDCEx LTDCEx
+ * @brief LTDC HAL module driver
+ * @{
+ */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup LTDCEx_Exported_Functions LTDC Extended Exported Functions
+ * @{
+ */
+
+/** @defgroup LTDCEx_Exported_Functions_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 LTDC
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Retrieve common parameters from DSI Video mode configuration structure
+ * @param hltdc pointer to a LTDC_HandleTypeDef structure that contains
+ * the configuration information for the LTDC.
+ * @param VidCfg pointer to a DSI_VidCfgTypeDef structure that contains
+ * the DSI video mode configuration parameters
+ * @note The implementation of this function is taking into account the LTDC
+ * polarities inversion as described in the current LTDC specification
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_LTDCEx_StructInitFromVideoConfig(LTDC_HandleTypeDef *hltdc, DSI_VidCfgTypeDef *VidCfg)
+{
+ /* Retrieve signal polarities from DSI */
+
+ /* The following polarity is inverted:
+ LTDC_DEPOLARITY_AL <-> LTDC_DEPOLARITY_AH */
+
+ /* Note 1 : Code in line w/ Current LTDC specification */
+ hltdc->Init.DEPolarity = (VidCfg->DEPolarity == DSI_DATA_ENABLE_ACTIVE_HIGH) ? LTDC_DEPOLARITY_AL : LTDC_DEPOLARITY_AH;
+ hltdc->Init.VSPolarity = (VidCfg->VSPolarity == DSI_VSYNC_ACTIVE_HIGH) ? LTDC_VSPOLARITY_AH : LTDC_VSPOLARITY_AL;
+ hltdc->Init.HSPolarity = (VidCfg->HSPolarity == DSI_HSYNC_ACTIVE_HIGH) ? LTDC_HSPOLARITY_AH : LTDC_HSPOLARITY_AL;
+
+ /* Note 2: Code to be used in case LTDC polarities inversion updated in the specification */
+ /* hltdc->Init.DEPolarity = VidCfg->DEPolarity << 29;
+ hltdc->Init.VSPolarity = VidCfg->VSPolarity << 29;
+ hltdc->Init.HSPolarity = VidCfg->HSPolarity << 29; */
+
+ /* Retrieve vertical timing parameters from DSI */
+ hltdc->Init.VerticalSync = VidCfg->VerticalSyncActive - 1U;
+ hltdc->Init.AccumulatedVBP = VidCfg->VerticalSyncActive + VidCfg->VerticalBackPorch - 1U;
+ hltdc->Init.AccumulatedActiveH = VidCfg->VerticalSyncActive + VidCfg->VerticalBackPorch + VidCfg->VerticalActive - 1U;
+ hltdc->Init.TotalHeigh = VidCfg->VerticalSyncActive + VidCfg->VerticalBackPorch + VidCfg->VerticalActive + VidCfg->VerticalFrontPorch - 1U;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Retrieve common parameters from DSI Adapted command mode configuration structure
+ * @param hltdc pointer to a LTDC_HandleTypeDef structure that contains
+ * the configuration information for the LTDC.
+ * @param CmdCfg pointer to a DSI_CmdCfgTypeDef structure that contains
+ * the DSI command mode configuration parameters
+ * @note The implementation of this function is taking into account the LTDC
+ * polarities inversion as described in the current LTDC specification
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_LTDCEx_StructInitFromAdaptedCommandConfig(LTDC_HandleTypeDef *hltdc, DSI_CmdCfgTypeDef *CmdCfg)
+{
+ /* Retrieve signal polarities from DSI */
+
+ /* The following polarities are inverted:
+ LTDC_DEPOLARITY_AL <-> LTDC_DEPOLARITY_AH
+ LTDC_VSPOLARITY_AL <-> LTDC_VSPOLARITY_AH
+ LTDC_HSPOLARITY_AL <-> LTDC_HSPOLARITY_AH)*/
+
+ /* Note 1 : Code in line w/ Current LTDC specification */
+ hltdc->Init.DEPolarity = (CmdCfg->DEPolarity == DSI_DATA_ENABLE_ACTIVE_HIGH) ? LTDC_DEPOLARITY_AL : LTDC_DEPOLARITY_AH;
+ hltdc->Init.VSPolarity = (CmdCfg->VSPolarity == DSI_VSYNC_ACTIVE_HIGH) ? LTDC_VSPOLARITY_AL : LTDC_VSPOLARITY_AH;
+ hltdc->Init.HSPolarity = (CmdCfg->HSPolarity == DSI_HSYNC_ACTIVE_HIGH) ? LTDC_HSPOLARITY_AL : LTDC_HSPOLARITY_AH;
+
+ /* Note 2: Code to be used in case LTDC polarities inversion updated in the specification */
+ /* hltdc->Init.DEPolarity = CmdCfg->DEPolarity << 29;
+ hltdc->Init.VSPolarity = CmdCfg->VSPolarity << 29;
+ hltdc->Init.HSPolarity = CmdCfg->HSPolarity << 29; */
+
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* LTDC && DSI */
+
+#endif /* HAL_LTCD_MODULE_ENABLED && HAL_DSI_MODULE_ENABLED */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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