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comparison l476rg/Drivers/CMSIS/Device/ST/STM32L4xx/Include/system_stm32l4xx.h @ 0:32a3b1785697

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a rough draft of Hardware Abstraction Layer for C++ STM32L476RG drivers
author cin
date Thu, 12 Jan 2017 02:45:43 +0300
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-1:000000000000 0:32a3b1785697
1 /**
2 ******************************************************************************
3 * @file system_stm32l4xx.h
4 * @author MCD Application Team
5 * @version V1.2.0
6 * @date 28-October-2016
7 * @brief CMSIS Cortex-M4 Device System Source File for STM32L4xx devices.
8 ******************************************************************************
9 * @attention
10 *
11 * <h2><center>&copy; 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****/