|
0
|
1 /**
|
|
|
2 ******************************************************************************
|
|
|
3 * @file system_stm32l4xx.h
|
|
|
4 * @author MCD Application Team
|
|
|
5 * @version V1.3.0RC5
|
|
|
6 * @date 02-September-2016
|
|
|
7 * @brief CMSIS Cortex-M4 Device System Source File for STM32L4xx devices.
|
|
|
8 ******************************************************************************
|
|
|
9 * @attention
|
|
|
10 *
|
|
|
11 * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
|
|
|
12 *
|
|
|
13 * Redistribution and use in source and binary forms, with or without modification,
|
|
|
14 * are permitted provided that the following conditions are met:
|
|
|
15 * 1. Redistributions of source code must retain the above copyright notice,
|
|
|
16 * this list of conditions and the following disclaimer.
|
|
|
17 * 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
|
18 * this list of conditions and the following disclaimer in the documentation
|
|
|
19 * and/or other materials provided with the distribution.
|
|
|
20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
|
|
|
21 * may be used to endorse or promote products derived from this software
|
|
|
22 * without specific prior written permission.
|
|
|
23 *
|
|
|
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
|
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
|
27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
|
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
|
30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
|
31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
|
32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
|
33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
34 *
|
|
|
35 ******************************************************************************
|
|
|
36 */
|
|
|
37
|
|
|
38 /** @addtogroup CMSIS
|
|
|
39 * @{
|
|
|
40 */
|
|
|
41
|
|
|
42 /** @addtogroup stm32l4xx_system
|
|
|
43 * @{
|
|
|
44 */
|
|
|
45
|
|
|
46 /**
|
|
|
47 * @brief Define to prevent recursive inclusion
|
|
|
48 */
|
|
|
49 #ifndef __SYSTEM_STM32L4XX_H
|
|
|
50 #define __SYSTEM_STM32L4XX_H
|
|
|
51
|
|
|
52 #ifdef __cplusplus
|
|
|
53 extern "C" {
|
|
|
54 #endif
|
|
|
55
|
|
|
56 /** @addtogroup STM32L4xx_System_Includes
|
|
|
57 * @{
|
|
|
58 */
|
|
|
59
|
|
|
60 /**
|
|
|
61 * @}
|
|
|
62 */
|
|
|
63
|
|
|
64
|
|
|
65 /** @addtogroup STM32L4xx_System_Exported_Variables
|
|
|
66 * @{
|
|
|
67 */
|
|
|
68 /* The SystemCoreClock variable is updated in three ways:
|
|
|
69 1) by calling CMSIS function SystemCoreClockUpdate()
|
|
|
70 2) by calling HAL API function HAL_RCC_GetSysClockFreq()
|
|
|
71 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
|
|
|
72 Note: If you use this function to configure the system clock; then there
|
|
|
73 is no need to call the 2 first functions listed above, since SystemCoreClock
|
|
|
74 variable is updated automatically.
|
|
|
75 */
|
|
|
76 extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
|
|
|
77
|
|
|
78 extern const uint8_t AHBPrescTable[16]; /*!< AHB prescalers table values */
|
|
|
79 extern const uint8_t APBPrescTable[8]; /*!< APB prescalers table values */
|
|
|
80 extern const uint32_t MSIRangeTable[12]; /*!< MSI ranges table values */
|
|
|
81
|
|
|
82 /**
|
|
|
83 * @}
|
|
|
84 */
|
|
|
85
|
|
|
86 /** @addtogroup STM32L4xx_System_Exported_Constants
|
|
|
87 * @{
|
|
|
88 */
|
|
|
89
|
|
|
90 /**
|
|
|
91 * @}
|
|
|
92 */
|
|
|
93
|
|
|
94 /** @addtogroup STM32L4xx_System_Exported_Macros
|
|
|
95 * @{
|
|
|
96 */
|
|
|
97
|
|
|
98 /**
|
|
|
99 * @}
|
|
|
100 */
|
|
|
101
|
|
|
102 /** @addtogroup STM32L4xx_System_Exported_Functions
|
|
|
103 * @{
|
|
|
104 */
|
|
|
105
|
|
|
106 extern void SystemInit(void);
|
|
|
107 extern void SystemCoreClockUpdate(void);
|
|
|
108 /**
|
|
|
109 * @}
|
|
|
110 */
|
|
|
111
|
|
|
112 #ifdef __cplusplus
|
|
|
113 }
|
|
|
114 #endif
|
|
|
115
|
|
|
116 #endif /*__SYSTEM_STM32L4XX_H */
|
|
|
117
|
|
|
118 /**
|
|
|
119 * @}
|
|
|
120 */
|
|
|
121
|
|
|
122 /**
|
|
|
123 * @}
|
|
|
124 */
|
|
|
125 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
