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/**
 1 
/**
2 
  ******************************************************************************
 2 
  ******************************************************************************
3 
  * @file    stm32f1xx_ll_exti.c
 3 
  * @file    stm32f1xx_ll_exti.c
4 
  * @author  MCD Application Team
 4 
  * @author  MCD Application Team
5 
  * @brief   EXTI LL module driver.
 5 
  * @brief   EXTI LL module driver.
6 
  ******************************************************************************
 6 
  ******************************************************************************
7 
  * @attention
 7 
  * @attention
8 
  *
 8 
  *
9 
  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
 9 
  * Copyright (c) 2016 STMicroelectronics.
10 
  * All rights reserved.</center></h2>
 10 
  * All rights reserved.
11 
  *
 11 
  *
12 
  * This software component is licensed by ST under BSD 3-Clause license,
 12 
  * This software is licensed under terms that can be found in the LICENSE file
13 
  * the "License"; You may not use this file except in compliance with the
 13 
  * in the root directory of this software component.
14 
  * License. You may obtain a copy of the License at:
 14 
  * If no LICENSE file comes with this software, it is provided AS-IS.
15 
  *                        opensource.org/licenses/BSD-3-Clause
 15 
  *
16 
  *
 16 
  ******************************************************************************
17 
  ******************************************************************************
 17 
  */
18 
  */
 18 
 
19 
 
 19 
#if defined(USE_FULL_LL_DRIVER)
20 
#if defined(USE_FULL_LL_DRIVER)
 20 
 
21 
 
 21 
/* Includes ------------------------------------------------------------------*/
22 
/* Includes ------------------------------------------------------------------*/
 22 
#include "stm32f1xx_ll_exti.h"
23 
#include "stm32f1xx_ll_exti.h"
 23 
#ifdef  USE_FULL_ASSERT
24 
#ifdef  USE_FULL_ASSERT
 24 
#include "stm32_assert.h"
25 
#include "stm32_assert.h"
 25 
#else
26 
#else
 26 
#define assert_param(expr) ((void)0U)
27 
#define assert_param(expr) ((void)0U)
 27 
#endif
28 
#endif
 28 
 
29 
 
 29 
/** @addtogroup STM32F1xx_LL_Driver
30 
/** @addtogroup STM32F1xx_LL_Driver
 30 
  * @{
31 
  * @{
 31 
  */
32 
  */
 32 
 
33 
 
 33 
#if defined (EXTI)
34 
#if defined (EXTI)
 34 
 
35 
 
 35 
/** @defgroup EXTI_LL EXTI
36 
/** @defgroup EXTI_LL EXTI
 36 
  * @{
37 
  * @{
 37 
  */
38 
  */
 38 
 
39 
 
 39 
/* Private types -------------------------------------------------------------*/
40 
/* Private types -------------------------------------------------------------*/
 40 
/* Private variables ---------------------------------------------------------*/
41 
/* Private variables ---------------------------------------------------------*/
 41 
/* Private constants ---------------------------------------------------------*/
42 
/* Private constants ---------------------------------------------------------*/
 42 
/* Private macros ------------------------------------------------------------*/
43 
/* Private macros ------------------------------------------------------------*/
 43 
/** @addtogroup EXTI_LL_Private_Macros
44 
/** @addtogroup EXTI_LL_Private_Macros
 44 
  * @{
45 
  * @{
 45 
  */
46 
  */
 46 
 
47 
 
 47 
#define IS_LL_EXTI_LINE_0_31(__VALUE__)              (((__VALUE__) & ~LL_EXTI_LINE_ALL_0_31) == 0x00000000U)
48 
#define IS_LL_EXTI_LINE_0_31(__VALUE__)              (((__VALUE__) & ~LL_EXTI_LINE_ALL_0_31) == 0x00000000U)
 48 
 
49 
 
 49 
#define IS_LL_EXTI_MODE(__VALUE__)                   (((__VALUE__) == LL_EXTI_MODE_IT)            \
50 
#define IS_LL_EXTI_MODE(__VALUE__)                   (((__VALUE__) == LL_EXTI_MODE_IT)            \
 50 
                                                   || ((__VALUE__) == LL_EXTI_MODE_EVENT)         \
51 
                                                   || ((__VALUE__) == LL_EXTI_MODE_EVENT)         \
 51 
                                                   || ((__VALUE__) == LL_EXTI_MODE_IT_EVENT))
52 
                                                   || ((__VALUE__) == LL_EXTI_MODE_IT_EVENT))
 52 
 
53 
 
 53 
 
54 
 
 54 
#define IS_LL_EXTI_TRIGGER(__VALUE__)                (((__VALUE__) == LL_EXTI_TRIGGER_NONE)       \
55 
#define IS_LL_EXTI_TRIGGER(__VALUE__)                (((__VALUE__) == LL_EXTI_TRIGGER_NONE)       \
 55 
                                                   || ((__VALUE__) == LL_EXTI_TRIGGER_RISING)     \
56 
                                                   || ((__VALUE__) == LL_EXTI_TRIGGER_RISING)     \
 56 
                                                   || ((__VALUE__) == LL_EXTI_TRIGGER_FALLING)    \
57 
                                                   || ((__VALUE__) == LL_EXTI_TRIGGER_FALLING)    \
 57 
                                                   || ((__VALUE__) == LL_EXTI_TRIGGER_RISING_FALLING))
58 
                                                   || ((__VALUE__) == LL_EXTI_TRIGGER_RISING_FALLING))
 58 
 
59 
 
 59 
/**
60 
/**
 60 
  * @}
61 
  * @}
 61 
  */
62 
  */
 62 
 
63 
 
 63 
/* Private function prototypes -----------------------------------------------*/
64 
/* Private function prototypes -----------------------------------------------*/
 64 
 
65 
 
 65 
/* Exported functions --------------------------------------------------------*/
66 
/* Exported functions --------------------------------------------------------*/
 66 
/** @addtogroup EXTI_LL_Exported_Functions
67 
/** @addtogroup EXTI_LL_Exported_Functions
 67 
  * @{
68 
  * @{
 68 
  */
69 
  */
 69 
 
70 
 
 70 
/** @addtogroup EXTI_LL_EF_Init
71 
/** @addtogroup EXTI_LL_EF_Init
 71 
  * @{
72 
  * @{
 72 
  */
73 
  */
 73 
 
74 
 
 74 
/**
75 
/**
 75 
  * @brief  De-initialize the EXTI registers to their default reset values.
76 
  * @brief  De-initialize the EXTI registers to their default reset values.
 76 
  * @retval An ErrorStatus enumeration value:
77 
  * @retval An ErrorStatus enumeration value:
 77 
  *          - SUCCESS: EXTI registers are de-initialized
78 
  *          - SUCCESS: EXTI registers are de-initialized
 78 
  *          - ERROR: not applicable
79 
  *          - ERROR: not applicable
 79 
  */
80 
  */
 80 
uint32_t LL_EXTI_DeInit(void)
81 
uint32_t LL_EXTI_DeInit(void)
 81 
{
82 
{
 82 
  /* Interrupt mask register set to default reset values */
83 
  /* Interrupt mask register set to default reset values */
 83 
  LL_EXTI_WriteReg(IMR,   0x00000000U);
84 
  LL_EXTI_WriteReg(IMR,   0x00000000U);
 84 
  /* Event mask register set to default reset values */
85 
  /* Event mask register set to default reset values */
 85 
  LL_EXTI_WriteReg(EMR,   0x00000000U);
86 
  LL_EXTI_WriteReg(EMR,   0x00000000U);
 86 
  /* Rising Trigger selection register set to default reset values */
87 
  /* Rising Trigger selection register set to default reset values */
 87 
  LL_EXTI_WriteReg(RTSR,  0x00000000U);
88 
  LL_EXTI_WriteReg(RTSR,  0x00000000U);
 88 
  /* Falling Trigger selection register set to default reset values */
89 
  /* Falling Trigger selection register set to default reset values */
 89 
  LL_EXTI_WriteReg(FTSR,  0x00000000U);
90 
  LL_EXTI_WriteReg(FTSR,  0x00000000U);
 90 
  /* Software interrupt event register set to default reset values */
91 
  /* Software interrupt event register set to default reset values */
 91 
  LL_EXTI_WriteReg(SWIER, 0x00000000U);
92 
  LL_EXTI_WriteReg(SWIER, 0x00000000U);
 92 
  /* Pending register clear */
93 
  /* Pending register clear */
 93 
  LL_EXTI_WriteReg(PR,    0x000FFFFFU);
94 
  LL_EXTI_WriteReg(PR,    0x000FFFFFU);
 94 
 
95 
 
 95 
  return SUCCESS;
96 
  return SUCCESS;
 96 
}
97 
}
 97 
 
98 
 
 98 
/**
99 
/**
 99 
  * @brief  Initialize the EXTI registers according to the specified parameters in EXTI_InitStruct.
100 
  * @brief  Initialize the EXTI registers according to the specified parameters in EXTI_InitStruct.
 100 
  * @param  EXTI_InitStruct pointer to a @ref LL_EXTI_InitTypeDef structure.
101 
  * @param  EXTI_InitStruct pointer to a @ref LL_EXTI_InitTypeDef structure.
 101 
  * @retval An ErrorStatus enumeration value:
102 
  * @retval An ErrorStatus enumeration value:
 102 
  *          - SUCCESS: EXTI registers are initialized
103 
  *          - SUCCESS: EXTI registers are initialized
 103 
  *          - ERROR: not applicable
104 
  *          - ERROR: not applicable
 104 
  */
105 
  */
 105 
uint32_t LL_EXTI_Init(LL_EXTI_InitTypeDef *EXTI_InitStruct)
106 
uint32_t LL_EXTI_Init(LL_EXTI_InitTypeDef *EXTI_InitStruct)
 106 
{
107 
{
 107 
  ErrorStatus status = SUCCESS;
108 
  ErrorStatus status = SUCCESS;
 108 
  /* Check the parameters */
109 
  /* Check the parameters */
 109 
  assert_param(IS_LL_EXTI_LINE_0_31(EXTI_InitStruct->Line_0_31));
110 
  assert_param(IS_LL_EXTI_LINE_0_31(EXTI_InitStruct->Line_0_31));
 110 
  assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->LineCommand));
111 
  assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->LineCommand));
 111 
  assert_param(IS_LL_EXTI_MODE(EXTI_InitStruct->Mode));
112 
  assert_param(IS_LL_EXTI_MODE(EXTI_InitStruct->Mode));
 112 
 
113 
 
 113 
  /* ENABLE LineCommand */
114 
  /* ENABLE LineCommand */
 114 
  if (EXTI_InitStruct->LineCommand != DISABLE)
115 
  if (EXTI_InitStruct->LineCommand != DISABLE)
 115 
  {
116 
  {
 116 
    assert_param(IS_LL_EXTI_TRIGGER(EXTI_InitStruct->Trigger));
117 
    assert_param(IS_LL_EXTI_TRIGGER(EXTI_InitStruct->Trigger));
 117 
 
118 
 
 118 
    /* Configure EXTI Lines in range from 0 to 31 */
119 
    /* Configure EXTI Lines in range from 0 to 31 */
 119 
    if (EXTI_InitStruct->Line_0_31 != LL_EXTI_LINE_NONE)
120 
    if (EXTI_InitStruct->Line_0_31 != LL_EXTI_LINE_NONE)
 120 
    {
121 
    {
 121 
      switch (EXTI_InitStruct->Mode)
122 
      switch (EXTI_InitStruct->Mode)
 122 
      {
123 
      {
 123 
        case LL_EXTI_MODE_IT:
124 
        case LL_EXTI_MODE_IT:
 124 
          /* First Disable Event on provided Lines */
125 
          /* First Disable Event on provided Lines */
 125 
          LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
126 
          LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
 126 
          /* Then Enable IT on provided Lines */
127 
          /* Then Enable IT on provided Lines */
 127 
          LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
128 
          LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
 128 
          break;
129 
          break;
 129 
        case LL_EXTI_MODE_EVENT:
130 
        case LL_EXTI_MODE_EVENT:
 130 
          /* First Disable IT on provided Lines */
131 
          /* First Disable IT on provided Lines */
 131 
          LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
132 
          LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
 132 
          /* Then Enable Event on provided Lines */
133 
          /* Then Enable Event on provided Lines */
 133 
          LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
134 
          LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
 134 
          break;
135 
          break;
 135 
        case LL_EXTI_MODE_IT_EVENT:
136 
        case LL_EXTI_MODE_IT_EVENT:
 136 
          /* Directly Enable IT & Event on provided Lines */
137 
          /* Directly Enable IT & Event on provided Lines */
 137 
          LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
138 
          LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
 138 
          LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
139 
          LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
 139 
          break;
140 
          break;
 140 
        default:
141 
        default:
 141 
          status = ERROR;
142 
          status = ERROR;
 142 
          break;
143 
          break;
 143 
      }
144 
      }
 144 
      if (EXTI_InitStruct->Trigger != LL_EXTI_TRIGGER_NONE)
145 
      if (EXTI_InitStruct->Trigger != LL_EXTI_TRIGGER_NONE)
 145 
      {
146 
      {
 146 
        switch (EXTI_InitStruct->Trigger)
147 
        switch (EXTI_InitStruct->Trigger)
 147 
        {
148 
        {
 148 
          case LL_EXTI_TRIGGER_RISING:
149 
          case LL_EXTI_TRIGGER_RISING:
 149 
            /* First Disable Falling Trigger on provided Lines */
150 
            /* First Disable Falling Trigger on provided Lines */
 150 
            LL_EXTI_DisableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
151 
            LL_EXTI_DisableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
 151 
            /* Then Enable Rising Trigger on provided Lines */
152 
            /* Then Enable Rising Trigger on provided Lines */
 152 
            LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
153 
            LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
 153 
            break;
154 
            break;
 154 
          case LL_EXTI_TRIGGER_FALLING:
155 
          case LL_EXTI_TRIGGER_FALLING:
 155 
            /* First Disable Rising Trigger on provided Lines */
156 
            /* First Disable Rising Trigger on provided Lines */
 156 
            LL_EXTI_DisableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
157 
            LL_EXTI_DisableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
 157 
            /* Then Enable Falling Trigger on provided Lines */
158 
            /* Then Enable Falling Trigger on provided Lines */
 158 
            LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
159 
            LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
 159 
            break;
160 
            break;
 160 
          case LL_EXTI_TRIGGER_RISING_FALLING:
161 
          case LL_EXTI_TRIGGER_RISING_FALLING:
 161 
            LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
162 
            LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
 162 
            LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
163 
            LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
 163 
            break;
164 
            break;
 164 
          default:
165 
          default:
 165 
            status = ERROR;
166 
            status = ERROR;
 166 
            break;
167 
            break;
 167 
        }
168 
        }
 168 
      }
169 
      }
 169 
    }
170 
    }
 170 
  }
171 
  }
 171 
  /* DISABLE LineCommand */
172 
  /* DISABLE LineCommand */
 172 
  else
173 
  else
 173 
  {
174 
  {
 174 
    /* De-configure EXTI Lines in range from 0 to 31 */
175 
    /* De-configure EXTI Lines in range from 0 to 31 */
 175 
    LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
176 
    LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
 176 
    LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
177 
    LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
 177 
  }
178 
  }
 178 
  return status;
179 
  return status;
 179 
}
180 
}
 180 
 
181 
 
 181 
/**
182 
/**
 182 
  * @brief  Set each @ref LL_EXTI_InitTypeDef field to default value.
183 
  * @brief  Set each @ref LL_EXTI_InitTypeDef field to default value.
 183 
  * @param  EXTI_InitStruct Pointer to a @ref LL_EXTI_InitTypeDef structure.
184 
  * @param  EXTI_InitStruct Pointer to a @ref LL_EXTI_InitTypeDef structure.
 184 
  * @retval None
185 
  * @retval None
 185 
  */
186 
  */
 186 
void LL_EXTI_StructInit(LL_EXTI_InitTypeDef *EXTI_InitStruct)
187 
void LL_EXTI_StructInit(LL_EXTI_InitTypeDef *EXTI_InitStruct)
 187 
{
188 
{
 188 
  EXTI_InitStruct->Line_0_31      = LL_EXTI_LINE_NONE;
189 
  EXTI_InitStruct->Line_0_31      = LL_EXTI_LINE_NONE;
 189 
  EXTI_InitStruct->LineCommand    = DISABLE;
190 
  EXTI_InitStruct->LineCommand    = DISABLE;
 190 
  EXTI_InitStruct->Mode           = LL_EXTI_MODE_IT;
191 
  EXTI_InitStruct->Mode           = LL_EXTI_MODE_IT;
 191 
  EXTI_InitStruct->Trigger        = LL_EXTI_TRIGGER_FALLING;
192 
  EXTI_InitStruct->Trigger        = LL_EXTI_TRIGGER_FALLING;
 192 
}
193 
}
 193 
 
194 
 
 194 
/**
195 
/**
 195 
  * @}
196 
  * @}
 196 
  */
197 
  */
 197 
 
198 
 
 198 
/**
199 
/**
 199 
  * @}
200 
  * @}
 200 
  */
201 
  */
 201 
 
202 
 
 202 
/**
203 
/**
 203 
  * @}
204 
  * @}
 204 
  */
205 
  */
 205 
 
206 
 
 206 
#endif /* defined (EXTI) */
207 
#endif /* defined (EXTI) */
 207 
 
208 
 
 208 
/**
209 
/**
 209 
  * @}
210 
  * @}
 210 
  */
211 
  */
 211 
 
212 
 
 212 
#endif /* USE_FULL_LL_DRIVER */
213 
#endif /* USE_FULL_LL_DRIVER */
 213 
 
214 
 
 - 
 
215 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
 -