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annotate Common/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_iwdg.h @ 760:21949c88da90

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author heinrichsweikamp
date Tue, 21 Mar 2023 12:56:54 +0100
parents c78bcbd5deda
children
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128
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1 /**
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2 ******************************************************************************
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3 * @file stm32f4xx_hal_iwdg.h
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4 * @author MCD Application Team
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5 * @brief Header file of IWDG HAL 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_IWDG_H
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38 #define __STM32F4xx_HAL_IWDG_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 /* Includes ------------------------------------------------------------------*/
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45 #include "stm32f4xx_hal_def.h"
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46
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47 /** @addtogroup STM32F4xx_HAL_Driver
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48 * @{
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49 */
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50
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51 /** @addtogroup IWDG
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52 * @{
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53 */
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54
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55 /* Exported types ------------------------------------------------------------*/
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56 /** @defgroup IWDG_Exported_Types IWDG Exported Types
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57 * @{
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58 */
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59
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60 /**
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61 * @brief IWDG Init structure definition
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62 */
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63 typedef struct
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64 {
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65 uint32_t Prescaler; /*!< Select the prescaler of the IWDG.
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66 This parameter can be a value of @ref IWDG_Prescaler */
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67
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68 uint32_t Reload; /*!< Specifies the IWDG down-counter reload value.
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69 This parameter must be a number between Min_Data = 0 and Max_Data = 0x0FFF */
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70
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71 } IWDG_InitTypeDef;
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72
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73 /**
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74 * @brief IWDG Handle Structure definition
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75 */
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76 typedef struct
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77 {
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78 IWDG_TypeDef *Instance; /*!< Register base address */
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79
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80 IWDG_InitTypeDef Init; /*!< IWDG required parameters */
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81
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82 }IWDG_HandleTypeDef;
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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 /* Exported constants --------------------------------------------------------*/
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89 /** @defgroup IWDG_Exported_Constants IWDG Exported Constants
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90 * @{
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91 */
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92
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93 /** @defgroup IWDG_Prescaler IWDG Prescaler
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94 * @{
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95 */
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96 #define IWDG_PRESCALER_4 0x00000000U /*!< IWDG prescaler set to 4 */
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97 #define IWDG_PRESCALER_8 IWDG_PR_PR_0 /*!< IWDG prescaler set to 8 */
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98 #define IWDG_PRESCALER_16 IWDG_PR_PR_1 /*!< IWDG prescaler set to 16 */
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99 #define IWDG_PRESCALER_32 (IWDG_PR_PR_1 | IWDG_PR_PR_0) /*!< IWDG prescaler set to 32 */
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100 #define IWDG_PRESCALER_64 IWDG_PR_PR_2 /*!< IWDG prescaler set to 64 */
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101 #define IWDG_PRESCALER_128 (IWDG_PR_PR_2 | IWDG_PR_PR_0) /*!< IWDG prescaler set to 128 */
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102 #define IWDG_PRESCALER_256 (IWDG_PR_PR_2 | IWDG_PR_PR_1) /*!< IWDG prescaler set to 256 */
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103 /**
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104 * @}
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105 */
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106
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107 /**
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108 * @}
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109 */
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110
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111 /* Exported macros -----------------------------------------------------------*/
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112 /** @defgroup IWDG_Exported_Macros IWDG Exported Macros
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113 * @{
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114 */
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115
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116 /**
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117 * @brief Enable the IWDG peripheral.
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118 * @param __HANDLE__ IWDG handle
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119 * @retval None
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120 */
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121 #define __HAL_IWDG_START(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_ENABLE)
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122
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123 /**
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124 * @brief Reload IWDG counter with value defined in the reload register
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125 * (write access to IWDG_PR & IWDG_RLR registers disabled).
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126 * @param __HANDLE__ IWDG handle
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127 * @retval None
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128 */
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129 #define __HAL_IWDG_RELOAD_COUNTER(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_RELOAD)
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130
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131 /**
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132 * @}
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133 */
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134
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135 /* Exported functions --------------------------------------------------------*/
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136 /** @defgroup IWDG_Exported_Functions IWDG Exported Functions
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137 * @{
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138 */
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139
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140 /** @defgroup IWDG_Exported_Functions_Group1 Initialization and Start functions
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141 * @{
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142 */
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143 /* Initialization/Start functions ********************************************/
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144 HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg);
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145 /**
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146 * @}
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147 */
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148
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149 /** @defgroup IWDG_Exported_Functions_Group2 IO operation functions
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150 * @{
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151 */
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152 /* I/O operation functions ****************************************************/
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153 HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg);
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154 /**
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155 * @}
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156 */
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157
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158 /**
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159 * @}
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160 */
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161
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162 /* Private constants ---------------------------------------------------------*/
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163 /** @defgroup IWDG_Private_Constants IWDG Private Constants
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164 * @{
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165 */
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166
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167 /**
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168 * @brief IWDG Key Register BitMask
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169 */
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170 #define IWDG_KEY_RELOAD 0x0000AAAAU /*!< IWDG Reload Counter Enable */
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171 #define IWDG_KEY_ENABLE 0x0000CCCCU /*!< IWDG Peripheral Enable */
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172 #define IWDG_KEY_WRITE_ACCESS_ENABLE 0x00005555U /*!< IWDG KR Write Access Enable */
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173 #define IWDG_KEY_WRITE_ACCESS_DISABLE 0x00000000U /*!< IWDG KR Write Access Disable */
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174
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175 /**
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176 * @}
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177 */
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178
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179 /* Private macros ------------------------------------------------------------*/
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180 /** @defgroup IWDG_Private_Macros IWDG Private Macros
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181 * @{
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182 */
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183
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184 /**
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185 * @brief Enable write access to IWDG_PR and IWDG_RLR registers.
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186 * @param __HANDLE__ IWDG handle
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187 * @retval None
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188 */
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189 #define IWDG_ENABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_ENABLE)
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190
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191 /**
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192 * @brief Disable write access to IWDG_PR and IWDG_RLR registers.
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193 * @param __HANDLE__ IWDG handle
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194 * @retval None
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195 */
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196 #define IWDG_DISABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_DISABLE)
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197
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198 /**
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199 * @brief Check IWDG prescaler value.
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200 * @param __PRESCALER__ IWDG prescaler value
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201 * @retval None
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202 */
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203 #define IS_IWDG_PRESCALER(__PRESCALER__) (((__PRESCALER__) == IWDG_PRESCALER_4) || \
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204 ((__PRESCALER__) == IWDG_PRESCALER_8) || \
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205 ((__PRESCALER__) == IWDG_PRESCALER_16) || \
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206 ((__PRESCALER__) == IWDG_PRESCALER_32) || \
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207 ((__PRESCALER__) == IWDG_PRESCALER_64) || \
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208 ((__PRESCALER__) == IWDG_PRESCALER_128)|| \
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209 ((__PRESCALER__) == IWDG_PRESCALER_256))
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210
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211 /**
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212 * @brief Check IWDG reload value.
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213 * @param __RELOAD__ IWDG reload value
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214 * @retval None
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215 */
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216 #define IS_IWDG_RELOAD(__RELOAD__) ((__RELOAD__) <= IWDG_RLR_RL)
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217
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218 /**
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219 * @}
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220 */
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221
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222 /**
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223 * @}
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224 */
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225
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226 /**
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227 * @}
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228 */
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229
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230
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231 #ifdef __cplusplus
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232 }
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233 #endif
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234
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235 #endif /* __STM32F4xx_HAL_IWDG_H */
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236
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237 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/