2 ******************************************************************************
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3 * @file stm32l1xx_exti.h
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4 * @author MCD Application Team
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6 * @date 31-December-2010
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7 * @brief This file contains all the functions prototypes for the EXTI firmware
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9 ******************************************************************************
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12 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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13 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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14 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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15 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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16 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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17 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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19 * <h2><center>© COPYRIGHT 2010 STMicroelectronics</center></h2>
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20 ******************************************************************************
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23 /* Define to prevent recursive inclusion -------------------------------------*/
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24 #ifndef __STM32L1xx_EXTI_H
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25 #define __STM32L1xx_EXTI_H
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31 /* Includes ------------------------------------------------------------------*/
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32 #include "stm32l1xx.h"
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34 /** @addtogroup STM32L1xx_StdPeriph_Driver
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38 /** @addtogroup EXTI
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42 /* Exported types ------------------------------------------------------------*/
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45 * @brief EXTI mode enumeration
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50 EXTI_Mode_Interrupt = 0x00,
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51 EXTI_Mode_Event = 0x04
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54 #define IS_EXTI_MODE(MODE) (((MODE) == EXTI_Mode_Interrupt) || ((MODE) == EXTI_Mode_Event))
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57 * @brief EXTI Trigger enumeration
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62 EXTI_Trigger_Rising = 0x08,
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63 EXTI_Trigger_Falling = 0x0C,
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64 EXTI_Trigger_Rising_Falling = 0x10
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65 }EXTITrigger_TypeDef;
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67 #define IS_EXTI_TRIGGER(TRIGGER) (((TRIGGER) == EXTI_Trigger_Rising) || \
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68 ((TRIGGER) == EXTI_Trigger_Falling) || \
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69 ((TRIGGER) == EXTI_Trigger_Rising_Falling))
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71 * @brief EXTI Init Structure definition
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76 uint32_t EXTI_Line; /*!< Specifies the EXTI lines to be enabled or disabled.
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77 This parameter can be any combination of @ref EXTI_Lines */
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79 EXTIMode_TypeDef EXTI_Mode; /*!< Specifies the mode for the EXTI lines.
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80 This parameter can be a value of @ref EXTIMode_TypeDef */
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82 EXTITrigger_TypeDef EXTI_Trigger; /*!< Specifies the trigger signal active edge for the EXTI lines.
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83 This parameter can be a value of @ref EXTIMode_TypeDef */
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85 FunctionalState EXTI_LineCmd; /*!< Specifies the new state of the selected EXTI lines.
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86 This parameter can be set either to ENABLE or DISABLE */
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89 /* Exported constants --------------------------------------------------------*/
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91 /** @defgroup EXTI_Exported_Constants
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95 /** @defgroup EXTI_Lines
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99 #define EXTI_Line0 ((uint32_t)0x00000001) /*!< External interrupt line 0 */
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100 #define EXTI_Line1 ((uint32_t)0x00000002) /*!< External interrupt line 1 */
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101 #define EXTI_Line2 ((uint32_t)0x00000004) /*!< External interrupt line 2 */
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102 #define EXTI_Line3 ((uint32_t)0x00000008) /*!< External interrupt line 3 */
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103 #define EXTI_Line4 ((uint32_t)0x00000010) /*!< External interrupt line 4 */
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104 #define EXTI_Line5 ((uint32_t)0x00000020) /*!< External interrupt line 5 */
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105 #define EXTI_Line6 ((uint32_t)0x00000040) /*!< External interrupt line 6 */
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106 #define EXTI_Line7 ((uint32_t)0x00000080) /*!< External interrupt line 7 */
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107 #define EXTI_Line8 ((uint32_t)0x00000100) /*!< External interrupt line 8 */
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108 #define EXTI_Line9 ((uint32_t)0x00000200) /*!< External interrupt line 9 */
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109 #define EXTI_Line10 ((uint32_t)0x00000400) /*!< External interrupt line 10 */
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110 #define EXTI_Line11 ((uint32_t)0x00000800) /*!< External interrupt line 11 */
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111 #define EXTI_Line12 ((uint32_t)0x00001000) /*!< External interrupt line 12 */
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112 #define EXTI_Line13 ((uint32_t)0x00002000) /*!< External interrupt line 13 */
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113 #define EXTI_Line14 ((uint32_t)0x00004000) /*!< External interrupt line 14 */
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114 #define EXTI_Line15 ((uint32_t)0x00008000) /*!< External interrupt line 15 */
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115 #define EXTI_Line16 ((uint32_t)0x00010000) /*!< External interrupt line 16
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116 Connected to the PVD Output */
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117 #define EXTI_Line17 ((uint32_t)0x00020000) /*!< External interrupt line 17
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118 Connected to the RTC Alarm
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120 #define EXTI_Line18 ((uint32_t)0x00040000) /*!< External interrupt line 18
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121 Connected to the USB Device
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122 FS Wakeup from suspend event */
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123 #define EXTI_Line19 ((uint32_t)0x00080000) /*!< External interrupt line 19
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124 Connected to the RTC Tamper
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125 and Time Stamp events */
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126 #define EXTI_Line20 ((uint32_t)0x00100000) /*!< External interrupt line 20
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127 Connected to the RTC Wakeup
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129 #define EXTI_Line21 ((uint32_t)0x00200000) /*!< External interrupt line 21
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130 Connected to the Comparator 1
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133 #define EXTI_Line22 ((uint32_t)0x00400000) /*!< External interrupt line 22
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134 Connected to the Comparator 2
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137 #define IS_EXTI_LINE(LINE) ((((LINE) & (uint32_t)0xFF800000) == 0x00) && ((LINE) != (uint16_t)0x00))
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139 #define IS_GET_EXTI_LINE(LINE) (((LINE) == EXTI_Line0) || ((LINE) == EXTI_Line1) || \
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140 ((LINE) == EXTI_Line2) || ((LINE) == EXTI_Line3) || \
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141 ((LINE) == EXTI_Line4) || ((LINE) == EXTI_Line5) || \
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142 ((LINE) == EXTI_Line6) || ((LINE) == EXTI_Line7) || \
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143 ((LINE) == EXTI_Line8) || ((LINE) == EXTI_Line9) || \
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144 ((LINE) == EXTI_Line10) || ((LINE) == EXTI_Line11) || \
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145 ((LINE) == EXTI_Line12) || ((LINE) == EXTI_Line13) || \
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146 ((LINE) == EXTI_Line14) || ((LINE) == EXTI_Line15) || \
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147 ((LINE) == EXTI_Line16) || ((LINE) == EXTI_Line17) || \
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148 ((LINE) == EXTI_Line18) || ((LINE) == EXTI_Line19) || \
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149 ((LINE) == EXTI_Line20) || ((LINE) == EXTI_Line21) || \
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150 ((LINE) == EXTI_Line22))
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160 /* Exported macro ------------------------------------------------------------*/
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161 /* Exported functions ------------------------------------------------------- */
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162 /* Function used to set the EXTI configuration to the default reset state *****/
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163 void EXTI_DeInit(void);
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165 /* Initialization and Configuration functions *********************************/
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166 void EXTI_Init(EXTI_InitTypeDef* EXTI_InitStruct);
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167 void EXTI_StructInit(EXTI_InitTypeDef* EXTI_InitStruct);
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168 void EXTI_GenerateSWInterrupt(uint32_t EXTI_Line);
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170 /* Interrupts and flags management functions **********************************/
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171 FlagStatus EXTI_GetFlagStatus(uint32_t EXTI_Line);
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172 void EXTI_ClearFlag(uint32_t EXTI_Line);
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173 ITStatus EXTI_GetITStatus(uint32_t EXTI_Line);
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174 void EXTI_ClearITPendingBit(uint32_t EXTI_Line);
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180 #endif /* __STM32L1xx_EXTI_H */
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190 /******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/
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