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annotate Common/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_ltdc_ex.h @ 328:4fe5400567e7 I2C_Improvment

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Set I2C speed to 88kHz, use digital filter only and reworked idle clock recovery The errata describes a possible problem in operation between 88kHz and 100kHz => Set speed as recommended as work around. Based on reference implementation only one filter should be use. Choice was digital because only drawback is lag of wakeup functionality which is not used I2C communication may be randomly interrupted e.g. by a RTE reset or firmware update => reworked recovery function to get I2C devices in idle state again (Clk and SDA HIGH)
author ideenmodellierer
date Wed, 17 Jul 2019 22:42:15 +0200
parents c78bcbd5deda
children
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1 /**
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2 ******************************************************************************
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3 * @file stm32f4xx_hal_ltdc_ex.h
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4 * @author MCD Application Team
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5 * @brief Header file of LTDC HAL Extension module.
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6 ******************************************************************************
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7 * @attention
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8 *
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9 * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
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10 *
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11 * Redistribution and use in source and binary forms, with or without modification,
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12 * are permitted provided that the following conditions are met:
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13 * 1. Redistributions of source code must retain the above copyright notice,
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14 * this list of conditions and the following disclaimer.
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15 * 2. Redistributions in binary form must reproduce the above copyright notice,
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16 * this list of conditions and the following disclaimer in the documentation
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17 * and/or other materials provided with the distribution.
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18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
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19 * may be used to endorse or promote products derived from this software
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20 * without specific prior written permission.
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21 *
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22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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32 *
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33 ******************************************************************************
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34 */
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35
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36 /* Define to prevent recursive inclusion -------------------------------------*/
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37 #ifndef __STM32F4xx_HAL_LTDC_EX_H
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38 #define __STM32F4xx_HAL_LTDC_EX_H
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39
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40 #ifdef __cplusplus
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41 extern "C" {
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42 #endif
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43
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44 #if defined(STM32F469xx) || defined(STM32F479xx)
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45 /* Includes ------------------------------------------------------------------*/
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46 #include "stm32f4xx_hal_def.h"
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47 #include "stm32f4xx_hal_dsi.h"
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48
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49 /** @addtogroup STM32F4xx_HAL_Driver
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50 * @{
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51 */
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52
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53 /** @addtogroup LTDCEx
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54 * @{
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55 */
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56
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57 /* Exported types ------------------------------------------------------------*/
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58 /* Exported constants --------------------------------------------------------*/
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59 /* Exported macro ------------------------------------------------------------*/
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60 /* Exported functions --------------------------------------------------------*/
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61 /** @addtogroup LTDCEx_Exported_Functions
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62 * @{
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63 */
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64
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65 /** @addtogroup LTDCEx_Exported_Functions_Group1
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66 * @{
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67 */
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68 HAL_StatusTypeDef HAL_LTDCEx_StructInitFromVideoConfig(LTDC_HandleTypeDef* hltdc, DSI_VidCfgTypeDef *VidCfg);
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69 HAL_StatusTypeDef HAL_LTDCEx_StructInitFromAdaptedCommandConfig(LTDC_HandleTypeDef* hltdc, DSI_CmdCfgTypeDef *CmdCfg);
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70 /**
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71 * @}
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72 */
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73
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74 /**
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75 * @}
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76 */
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77
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78 /* Private types -------------------------------------------------------------*/
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79 /* Private variables ---------------------------------------------------------*/
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80 /* Private constants ---------------------------------------------------------*/
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81 /* Private macros ------------------------------------------------------------*/
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82 /* Private functions ---------------------------------------------------------*/
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83
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84 /**
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85 * @}
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86 */
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87
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88 /**
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89 * @}
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90 */
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91
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92 #endif /* STM32F469xx || STM32F479xx */
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93
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94 #ifdef __cplusplus
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95 }
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96 #endif
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97
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98 #endif /* __STM32F4xx_HAL_LTDC_EX_H */
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99
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100 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/