| /** |
| ****************************************************************************** |
| * @file system_stm32f4xx.h |
| * @author MCD Application Team |
| * @brief CMSIS Cortex-M4 Device System Source File for STM32F4xx devices. |
| ****************************************************************************** |
| * @attention |
| * |
| * <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2> |
| * |
| * Redistribution and use in source and binary forms, with or without modification, |
| * are permitted provided that the following conditions are met: |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| ****************************************************************************** |
| */ |
| |
| /** @addtogroup CMSIS |
| * @{ |
| */ |
| |
| /** @addtogroup stm32f4xx_system |
| * @{ |
| */ |
| |
| /** |
| * @brief Define to prevent recursive inclusion |
| */ |
| #ifndef __SYSTEM_STM32F4XX_H |
| #define __SYSTEM_STM32F4XX_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** @addtogroup STM32F4xx_System_Includes |
| * @{ |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| |
| /** @addtogroup STM32F4xx_System_Exported_types |
| * @{ |
| */ |
| /* This variable is updated in three ways: |
| 1) by calling CMSIS function SystemCoreClockUpdate() |
| 2) by calling HAL API function HAL_RCC_GetSysClockFreq() |
| 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency |
| Note: If you use this function to configure the system clock; then there |
| is no need to call the 2 first functions listed above, since SystemCoreClock |
| variable is updated automatically. |
| */ |
| extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */ |
| |
| extern const uint8_t AHBPrescTable[16]; /*!< AHB prescalers table values */ |
| extern const uint8_t APBPrescTable[8]; /*!< APB prescalers table values */ |
| |
| /** |
| * @} |
| */ |
| |
| /** @addtogroup STM32F4xx_System_Exported_Constants |
| * @{ |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** @addtogroup STM32F4xx_System_Exported_Macros |
| * @{ |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** @addtogroup STM32F4xx_System_Exported_Functions |
| * @{ |
| */ |
| |
| extern void SystemInit(void); |
| extern void SystemCoreClockUpdate(void); |
| /** |
| * @} |
| */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /*__SYSTEM_STM32F4XX_H */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
