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comparison Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_ltdc_ex.c @ 160:e3ca52b8e7fa

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Merge with FlipDisplay
author heinrichsweikamp
date Thu, 07 Mar 2019 15:06:43 +0100
parents c78bcbd5deda
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80:cc2bb7bb8456 160:e3ca52b8e7fa
1 /**
2 ******************************************************************************
3 * @file stm32f4xx_hal_ltdc_ex.c
4 * @author MCD Application Team
5 * @brief LTDC Extension HAL module driver.
6 ******************************************************************************
7 * @attention
8 *
9 * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
10 *
11 * Redistribution and use in source and binary forms, with or without modification,
12 * are permitted provided that the following conditions are met:
13 * 1. Redistributions of source code must retain the above copyright notice,
14 * this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 *
33 ******************************************************************************
34 */
35
36 /* Includes ------------------------------------------------------------------*/
37 #include "stm32f4xx_hal.h"
38
39 /** @addtogroup STM32F4xx_HAL_Driver
40 * @{
41 */
42 /** @defgroup LTDCEx LTDCEx
43 * @brief LTDC HAL module driver
44 * @{
45 */
46
47 #ifdef HAL_LTDC_MODULE_ENABLED
48
49 /* Private typedef -----------------------------------------------------------*/
50 /* Private define ------------------------------------------------------------*/
51 /* Private macro -------------------------------------------------------------*/
52 /* Private variables ---------------------------------------------------------*/
53 /* Private function prototypes -----------------------------------------------*/
54 /* Exported functions --------------------------------------------------------*/
55
56 /** @defgroup LTDCEx_Exported_Functions LTDC Extended Exported Functions
57 * @{
58 */
59
60 /** @defgroup LTDCEx_Exported_Functions_Group1 Initialization and Configuration functions
61 * @brief Initialization and Configuration functions
62 *
63 @verbatim
64 ===============================================================================
65 ##### Initialization and Configuration functions #####
66 ===============================================================================
67 [..] This section provides functions allowing to:
68 (+) Initialize and configure the LTDC
69
70 @endverbatim
71 * @{
72 */
73 #if defined(STM32F469xx) || defined(STM32F479xx)
74 /**
75 * @brief Retrieve common parameters from DSI Video mode configuration structure
76 * @param hltdc pointer to a LTDC_HandleTypeDef structure that contains
77 * the configuration information for the LTDC.
78 * @param VidCfg pointer to a DSI_VidCfgTypeDef structure that contains
79 * the DSI video mode configuration parameters
80 * @note The implementation of this function is taking into account the LTDC
81 * polarities inversion as described in the current LTDC specification
82 * @retval HAL status
83 */
84 HAL_StatusTypeDef HAL_LTDCEx_StructInitFromVideoConfig(LTDC_HandleTypeDef* hltdc, DSI_VidCfgTypeDef *VidCfg)
85 {
86 /* Retrieve signal polarities from DSI */
87
88 /* The following polarity is inverted:
89 LTDC_DEPOLARITY_AL <-> LTDC_DEPOLARITY_AH */
90
91 /* Note 1 : Code in line w/ Current LTDC specification */
92 hltdc->Init.DEPolarity = (VidCfg->DEPolarity == DSI_DATA_ENABLE_ACTIVE_HIGH) ? LTDC_DEPOLARITY_AL : LTDC_DEPOLARITY_AH;
93 hltdc->Init.VSPolarity = (VidCfg->VSPolarity == DSI_VSYNC_ACTIVE_HIGH) ? LTDC_VSPOLARITY_AH : LTDC_VSPOLARITY_AL;
94 hltdc->Init.HSPolarity = (VidCfg->HSPolarity == DSI_HSYNC_ACTIVE_HIGH) ? LTDC_HSPOLARITY_AH : LTDC_HSPOLARITY_AL;
95
96 /* Note 2: Code to be used in case LTDC polarities inversion updated in the specification */
97 /* hltdc->Init.DEPolarity = VidCfg->DEPolarity << 29;
98 hltdc->Init.VSPolarity = VidCfg->VSPolarity << 29;
99 hltdc->Init.HSPolarity = VidCfg->HSPolarity << 29; */
100
101 /* Retrieve vertical timing parameters from DSI */
102 hltdc->Init.VerticalSync = VidCfg->VerticalSyncActive - 1U;
103 hltdc->Init.AccumulatedVBP = VidCfg->VerticalSyncActive + VidCfg->VerticalBackPorch - 1U;
104 hltdc->Init.AccumulatedActiveH = VidCfg->VerticalSyncActive + VidCfg->VerticalBackPorch + VidCfg->VerticalActive - 1U;
105 hltdc->Init.TotalHeigh = VidCfg->VerticalSyncActive + VidCfg->VerticalBackPorch + VidCfg->VerticalActive + VidCfg->VerticalFrontPorch - 1U;
106
107 return HAL_OK;
108 }
109
110 /**
111 * @brief Retrieve common parameters from DSI Adapted command mode configuration structure
112 * @param hltdc pointer to a LTDC_HandleTypeDef structure that contains
113 * the configuration information for the LTDC.
114 * @param CmdCfg pointer to a DSI_CmdCfgTypeDef structure that contains
115 * the DSI command mode configuration parameters
116 * @note The implementation of this function is taking into account the LTDC
117 * polarities inversion as described in the current LTDC specification
118 * @retval HAL status
119 */
120 HAL_StatusTypeDef HAL_LTDCEx_StructInitFromAdaptedCommandConfig(LTDC_HandleTypeDef* hltdc, DSI_CmdCfgTypeDef *CmdCfg)
121 {
122 /* Retrieve signal polarities from DSI */
123
124 /* The following polarities are inverted:
125 LTDC_DEPOLARITY_AL <-> LTDC_DEPOLARITY_AH
126 LTDC_VSPOLARITY_AL <-> LTDC_VSPOLARITY_AH
127 LTDC_HSPOLARITY_AL <-> LTDC_HSPOLARITY_AH)*/
128
129 /* Note 1 : Code in line w/ Current LTDC specification */
130 hltdc->Init.DEPolarity = (CmdCfg->DEPolarity == DSI_DATA_ENABLE_ACTIVE_HIGH) ? LTDC_DEPOLARITY_AL : LTDC_DEPOLARITY_AH;
131 hltdc->Init.VSPolarity = (CmdCfg->VSPolarity == DSI_VSYNC_ACTIVE_HIGH) ? LTDC_VSPOLARITY_AL : LTDC_VSPOLARITY_AH;
132 hltdc->Init.HSPolarity = (CmdCfg->HSPolarity == DSI_HSYNC_ACTIVE_HIGH) ? LTDC_HSPOLARITY_AL : LTDC_HSPOLARITY_AH;
133
134 /* Note 2: Code to be used in case LTDC polarities inversion updated in the specification */
135 /* hltdc->Init.DEPolarity = CmdCfg->DEPolarity << 29;
136 hltdc->Init.VSPolarity = CmdCfg->VSPolarity << 29;
137 hltdc->Init.HSPolarity = CmdCfg->HSPolarity << 29; */
138
139 return HAL_OK;
140 }
141 #endif /* STM32F469xx || STM32F479xx */
142
143 /**
144 * @}
145 */
146
147 /**
148 * @}
149 */
150
151 #endif /* HAL_DCMI_MODULE_ENABLED */
152 /**
153 * @}
154 */
155
156 /**
157 * @}
158 */
159
160 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/