STM32H7各种复位原因查找方法

eric2013

mbed-os/reset_reason.c at master · ARMmbed/mbed-os (github.com)

1. /* mbed Microcontroller Library
   
2. * Copyright (c) 2006-2017 ARM Limited
   
3. * SPDX-License-Identifier: Apache-2.0
   
4. *
   
5. * Licensed under the Apache License, Version 2.0 (the "License");
   
6. * you may not use this file except in compliance with the License.
   
7. * You may obtain a copy of the License at
   
8. *
   
9. *     http://www.apache.org/licenses/LICENSE-2.0
   
10. *
    
11. * Unless required by applicable law or agreed to in writing, software
    
12. * distributed under the License is distributed on an "AS IS" BASIS,
    
13. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    
14. * See the License for the specific language governing permissions and
    
15. * limitations under the License.
    
16. */
    
17. #include "reset_reason_api.h"
    
18. 
    
19. #ifdef DEVICE_RESET_REASON
    
20. 
    
21. #include "device.h"
    
22. 
    
23. reset_reason_t hal_reset_reason_get(void)
    
24. {
    
25. #ifdef RCC_FLAG_LPWRRST
    
26.     if (__HAL_RCC_GET_FLAG(RCC_FLAG_LPWRRST)) {
    
27.         return RESET_REASON_WAKE_LOW_POWER;
    
28.     }
    
29. #endif
    
30. 
    
31. #ifdef RCC_FLAG_LPWR1RST
    
32.     if ((__HAL_RCC_GET_FLAG(RCC_FLAG_LPWR1RST)) || (__HAL_RCC_GET_FLAG(RCC_FLAG_LPWR2RST))) {
    
33.         return RESET_REASON_WAKE_LOW_POWER;
    
34.     }
    
35. #endif
    
36. 
    
37. #ifdef RCC_FLAG_WWDGRST
    
38.     if (__HAL_RCC_GET_FLAG(RCC_FLAG_WWDGRST)) {
    
39.         return RESET_REASON_WATCHDOG;
    
40.     }
    
41. #endif
    
42. 
    
43. #ifdef RCC_FLAG_WWDG1RST
    
44.     if (__HAL_RCC_GET_FLAG(RCC_FLAG_WWDG1RST)) {
    
45.         return RESET_REASON_WATCHDOG;
    
46.     }
    
47. #endif
    
48. 
    
49. #ifdef RCC_FLAG_IWDGRST
    
50.     if (__HAL_RCC_GET_FLAG(RCC_FLAG_IWDGRST)) {
    
51.         return RESET_REASON_WATCHDOG;
    
52.     }
    
53. #endif
    
54. 
    
55. #ifdef RCC_FLAG_IWDG1RST
    
56.     if (__HAL_RCC_GET_FLAG(RCC_FLAG_IWDG1RST)) {
    
57.         return RESET_REASON_WATCHDOG;
    
58.     }
    
59. #endif
    
60. 
    
61. #ifdef RCC_FLAG_SFTRST
    
62.     if (__HAL_RCC_GET_FLAG(RCC_FLAG_SFTRST)) {
    
63.         return RESET_REASON_SOFTWARE;
    
64.     }
    
65. #endif
    
66. 
    
67. #ifdef RCC_FLAG_PORRST
    
68.     if (__HAL_RCC_GET_FLAG(RCC_FLAG_PORRST)) {
    
69.         return RESET_REASON_POWER_ON;
    
70.     }
    
71. #endif
    
72. 
    
73. #ifdef RCC_FLAG_BORRST
    
74.     if (__HAL_RCC_GET_FLAG(RCC_FLAG_BORRST)) {
    
75.         return RESET_REASON_BROWN_OUT;
    
76.     }
    
77. #endif
    
78. 
    
79. #ifdef RCC_FLAG_PINRST
    
80.     if (__HAL_RCC_GET_FLAG(RCC_FLAG_PINRST)) {
    
81.         return RESET_REASON_PIN_RESET;
    
82.     }
    
83. #endif
    
84. 
    
85.     return RESET_REASON_UNKNOWN;
    
86. }
    
87. 
    
88. 
    
89. uint32_t hal_reset_reason_get_raw(void)
    
90. {
    
91. #if TARGET_STM32H7
    
92.     return RCC->RSR;
    
93. #else /* TARGET_STM32H7 */
    
94.     return RCC->CSR;
    
95. #endif /* TARGET_STM32H7 */
    
96. }
    
97. 
    
98. 
    
99. void hal_reset_reason_clear(void)
    
100. {
     
101.     __HAL_RCC_CLEAR_RESET_FLAGS();
     
102. }
     
103. 
     
104. #endif // DEVICE_RESET_REASON

复制代码

morning_enr6U

A强者的心

就是通过RCC的复位状态寄存器看的

qq1646544

这个API怎么使用，是复位后立即调用“hal_reset_reason_get”来获取复位后的原因吗

eric2013

qq1646544 发表于 2023-11-8 10:16
这个API怎么使用，是复位后立即调用“hal_reset_reason_get”来获取复位后的原因吗

对，是这样的。