1 /**
2   ******************************************************************************
3   * @file    system_stm32l1xx.h
4   * @author  MCD Application Team
5   * @brief   CMSIS Cortex-M3 Device System Source File for STM32L1xx devices.
6   ******************************************************************************
7   * @attention
8   *
9   * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
10   * All rights reserved.</center></h2>
11   *
12   * This software component is licensed by ST under BSD 3-Clause license,
13   * the "License"; You may not use this file except in compliance with the
14   * License. You may obtain a copy of the License at:
15   *                        opensource.org/licenses/BSD-3-Clause
16   *
17   ******************************************************************************
18   */
19 
20 /** @addtogroup CMSIS
21   * @{
22   */
23 
24 /** @addtogroup stm32l1xx_system
25   * @{
26   */
27 
28 /**
29   * @brief Define to prevent recursive inclusion
30   */
31 #ifndef __SYSTEM_STM32L1XX_H
32 #define __SYSTEM_STM32L1XX_H
33 
34 #ifdef __cplusplus
35  extern "C" {
36 #endif
37 
38 /** @addtogroup STM32L1xx_System_Includes
39   * @{
40   */
41 
42 /**
43   * @}
44   */
45 
46 
47 /** @addtogroup STM32L1xx_System_Exported_types
48   * @{
49   */
50   /* This variable is updated in three ways:
51       1) by calling CMSIS function SystemCoreClockUpdate()
52       2) by calling HAL API function HAL_RCC_GetSysClockFreq()
53       3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
54          Note: If you use this function to configure the system clock; then there
55                is no need to call the 2 first functions listed above, since SystemCoreClock
56                variable is updated automatically.
57   */
58 extern uint32_t SystemCoreClock;          /*!< System Clock Frequency (Core Clock) */
59 /*
60 */
61 extern const uint8_t AHBPrescTable[16];   /*!< AHB prescalers table values */
62 extern const uint8_t APBPrescTable[8];    /*!< APB prescalers table values */
63 extern const uint8_t PLLMulTable[9];      /*!< PLL multipiers table values */
64 
65 /**
66   * @}
67   */
68 
69 /** @addtogroup STM32L1xx_System_Exported_Constants
70   * @{
71   */
72 
73 /**
74   * @}
75   */
76 
77 /** @addtogroup STM32L1xx_System_Exported_Macros
78   * @{
79   */
80 
81 /**
82   * @}
83   */
84 
85 /** @addtogroup STM32L1xx_System_Exported_Functions
86   * @{
87   */
88 
89 extern void SystemInit(void);
90 extern void SystemCoreClockUpdate(void);
91 /**
92   * @}
93   */
94 
95 #ifdef __cplusplus
96 }
97 #endif
98 
99 #endif /*__SYSTEM_STM32L1XX_H */
100 
101 /**
102   * @}
103   */
104 
105 /**
106   * @}
107   */
108 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
109