| 1 | /** |
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| 2 | ****************************************************************************** |
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| 3 | * @file system_stm32g0xx.h |
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| 4 | * @author MCD Application Team |
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| 5 | * @brief CMSIS Cortex-M0+ Device System Source File for STM32G0xx devices. |
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| 6 | ****************************************************************************** |
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| 7 | * @attention |
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| 8 | * |
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| 9 | * Copyright (c) 2018-2021 STMicroelectronics. |
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| 10 | * All rights reserved. |
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| 11 | * |
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| 12 | * This software is licensed under terms that can be found in the LICENSE file |
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| 13 | * in the root directory of this software component. |
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| 14 | * If no LICENSE file comes with this software, it is provided AS-IS. |
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| 15 | * |
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| 16 | ****************************************************************************** |
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| 17 | */ |
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| 18 | /** @addtogroup CMSIS |
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| 19 | * @{ |
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| 20 | */ |
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| 21 | |
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| 22 | /** @addtogroup stm32g0xx_system |
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| 23 | * @{ |
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| 24 | */ |
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| 25 | |
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| 26 | /** |
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| 27 | * @brief Define to prevent recursive inclusion |
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| 28 | */ |
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| 29 | #ifndef SYSTEM_STM32G0XX_H |
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| 30 | #define SYSTEM_STM32G0XX_H |
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| 31 | |
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| 32 | #ifdef __cplusplus |
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| 33 | extern "C" { |
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| 34 | #endif |
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| 35 | |
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| 36 | /** @addtogroup STM32G0xx_System_Includes |
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| 37 | * @{ |
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| 38 | */ |
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| 39 | |
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| 40 | /** |
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| 41 | * @} |
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| 42 | */ |
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| 43 | |
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| 44 | |
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| 45 | /** @addtogroup STM32G0xx_System_Exported_types |
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| 46 | * @{ |
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| 47 | */ |
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| 48 | /* This variable is updated in three ways: |
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| 49 | 1) by calling CMSIS function SystemCoreClockUpdate() |
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| 50 | 2) by calling HAL API function HAL_RCC_GetSysClockFreq() |
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| 51 | 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency |
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| 52 | Note: If you use this function to configure the system clock; then there |
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| 53 | is no need to call the 2 first functions listed above, since SystemCoreClock |
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| 54 | variable is updated automatically. |
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| 55 | */ |
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| 56 | extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */ |
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| 57 | |
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| 58 | extern const uint32_t AHBPrescTable[16]; /*!< AHB prescalers table values */ |
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| 59 | extern const uint32_t APBPrescTable[8]; /*!< APB prescalers table values */ |
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| 60 | |
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| 61 | /** |
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| 62 | * @} |
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| 63 | */ |
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| 64 | |
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| 65 | /** @addtogroup STM32G0xx_System_Exported_Constants |
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| 66 | * @{ |
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| 67 | */ |
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| 68 | |
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| 69 | /** |
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| 70 | * @} |
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| 71 | */ |
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| 72 | |
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| 73 | /** @addtogroup STM32G0xx_System_Exported_Macros |
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| 74 | * @{ |
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| 75 | */ |
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| 76 | |
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| 77 | /** |
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| 78 | * @} |
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| 79 | */ |
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| 80 | |
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| 81 | /** @addtogroup STM32G0xx_System_Exported_Functions |
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| 82 | * @{ |
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| 83 | */ |
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| 84 | |
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| 85 | extern void SystemInit(void); |
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| 86 | extern void SystemCoreClockUpdate(void); |
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| 87 | /** |
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| 88 | * @} |
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| 89 | */ |
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| 90 | |
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| 91 | #ifdef __cplusplus |
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| 92 | } |
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| 93 | #endif |
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| 94 | |
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| 95 | #endif /*SYSTEM_STM32G0XX_H */ |
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| 96 | |
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| 97 | /** |
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| 98 | * @} |
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| 99 | */ |
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| 100 | |
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| 101 | /** |
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| 102 | * @} |
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| 103 | */ |
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