Gan likun / mbed1-dev

001

targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F446xE/device/system_stm32f4xx.h@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /**
ganlikun 0:13413ea9a877 2 ******************************************************************************
ganlikun 0:13413ea9a877 3 * @file system_stm32f4xx.h
ganlikun 0:13413ea9a877 4 * @author MCD Application Team
ganlikun 0:13413ea9a877 5 * @version V2.6.1
ganlikun 0:13413ea9a877 6 * @date 14-February-2017
ganlikun 0:13413ea9a877 7 * @brief CMSIS Cortex-M4 Device System Source File for STM32F4xx devices.
ganlikun 0:13413ea9a877 8 ******************************************************************************
ganlikun 0:13413ea9a877 9 * @attention
ganlikun 0:13413ea9a877 10 *
ganlikun 0:13413ea9a877 11 * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
ganlikun 0:13413ea9a877 12 *
ganlikun 0:13413ea9a877 13 * Redistribution and use in source and binary forms, with or without modification,
ganlikun 0:13413ea9a877 14 * are permitted provided that the following conditions are met:
ganlikun 0:13413ea9a877 15 * 1. Redistributions of source code must retain the above copyright notice,
ganlikun 0:13413ea9a877 16 * this list of conditions and the following disclaimer.
ganlikun 0:13413ea9a877 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
ganlikun 0:13413ea9a877 18 * this list of conditions and the following disclaimer in the documentation
ganlikun 0:13413ea9a877 19 * and/or other materials provided with the distribution.
ganlikun 0:13413ea9a877 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
ganlikun 0:13413ea9a877 21 * may be used to endorse or promote products derived from this software
ganlikun 0:13413ea9a877 22 * without specific prior written permission.
ganlikun 0:13413ea9a877 23 *
ganlikun 0:13413ea9a877 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
ganlikun 0:13413ea9a877 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
ganlikun 0:13413ea9a877 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ganlikun 0:13413ea9a877 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
ganlikun 0:13413ea9a877 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
ganlikun 0:13413ea9a877 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
ganlikun 0:13413ea9a877 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
ganlikun 0:13413ea9a877 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ganlikun 0:13413ea9a877 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
ganlikun 0:13413ea9a877 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ganlikun 0:13413ea9a877 34 *
ganlikun 0:13413ea9a877 35 ******************************************************************************
ganlikun 0:13413ea9a877 36 */
ganlikun 0:13413ea9a877 37
ganlikun 0:13413ea9a877 38 /** @addtogroup CMSIS
ganlikun 0:13413ea9a877 39 * @{
ganlikun 0:13413ea9a877 40 */
ganlikun 0:13413ea9a877 41
ganlikun 0:13413ea9a877 42 /** @addtogroup stm32f4xx_system
ganlikun 0:13413ea9a877 43 * @{
ganlikun 0:13413ea9a877 44 */
ganlikun 0:13413ea9a877 45
ganlikun 0:13413ea9a877 46 /**
ganlikun 0:13413ea9a877 47 * @brief Define to prevent recursive inclusion
ganlikun 0:13413ea9a877 48 */
ganlikun 0:13413ea9a877 49 #ifndef __SYSTEM_STM32F4XX_H
ganlikun 0:13413ea9a877 50 #define __SYSTEM_STM32F4XX_H
ganlikun 0:13413ea9a877 51
ganlikun 0:13413ea9a877 52 #ifdef __cplusplus
ganlikun 0:13413ea9a877 53 extern "C" {
ganlikun 0:13413ea9a877 54 #endif
ganlikun 0:13413ea9a877 55
ganlikun 0:13413ea9a877 56 /** @addtogroup STM32F4xx_System_Includes
ganlikun 0:13413ea9a877 57 * @{
ganlikun 0:13413ea9a877 58 */
ganlikun 0:13413ea9a877 59
ganlikun 0:13413ea9a877 60 /**
ganlikun 0:13413ea9a877 61 * @}
ganlikun 0:13413ea9a877 62 */
ganlikun 0:13413ea9a877 63
ganlikun 0:13413ea9a877 64
ganlikun 0:13413ea9a877 65 /** @addtogroup STM32F4xx_System_Exported_types
ganlikun 0:13413ea9a877 66 * @{
ganlikun 0:13413ea9a877 67 */
ganlikun 0:13413ea9a877 68 /* This variable is updated in three ways:
ganlikun 0:13413ea9a877 69 1) by calling CMSIS function SystemCoreClockUpdate()
ganlikun 0:13413ea9a877 70 2) by calling HAL API function HAL_RCC_GetSysClockFreq()
ganlikun 0:13413ea9a877 71 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
ganlikun 0:13413ea9a877 72 Note: If you use this function to configure the system clock; then there
ganlikun 0:13413ea9a877 73 is no need to call the 2 first functions listed above, since SystemCoreClock
ganlikun 0:13413ea9a877 74 variable is updated automatically.
ganlikun 0:13413ea9a877 75 */
ganlikun 0:13413ea9a877 76 extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
ganlikun 0:13413ea9a877 77
ganlikun 0:13413ea9a877 78 extern const uint8_t AHBPrescTable[16]; /*!< AHB prescalers table values */
ganlikun 0:13413ea9a877 79 extern const uint8_t APBPrescTable[8]; /*!< APB prescalers table values */
ganlikun 0:13413ea9a877 80
ganlikun 0:13413ea9a877 81 /**
ganlikun 0:13413ea9a877 82 * @}
ganlikun 0:13413ea9a877 83 */
ganlikun 0:13413ea9a877 84
ganlikun 0:13413ea9a877 85 /** @addtogroup STM32F4xx_System_Exported_Constants
ganlikun 0:13413ea9a877 86 * @{
ganlikun 0:13413ea9a877 87 */
ganlikun 0:13413ea9a877 88
ganlikun 0:13413ea9a877 89 /**
ganlikun 0:13413ea9a877 90 * @}
ganlikun 0:13413ea9a877 91 */
ganlikun 0:13413ea9a877 92
ganlikun 0:13413ea9a877 93 /** @addtogroup STM32F4xx_System_Exported_Macros
ganlikun 0:13413ea9a877 94 * @{
ganlikun 0:13413ea9a877 95 */
ganlikun 0:13413ea9a877 96
ganlikun 0:13413ea9a877 97 /**
ganlikun 0:13413ea9a877 98 * @}
ganlikun 0:13413ea9a877 99 */
ganlikun 0:13413ea9a877 100
ganlikun 0:13413ea9a877 101 /** @addtogroup STM32F4xx_System_Exported_Functions
ganlikun 0:13413ea9a877 102 * @{
ganlikun 0:13413ea9a877 103 */
ganlikun 0:13413ea9a877 104
ganlikun 0:13413ea9a877 105 extern void SystemInit(void);
ganlikun 0:13413ea9a877 106 extern void SystemCoreClockUpdate(void);
ganlikun 0:13413ea9a877 107 extern void SetSysClock(void);
ganlikun 0:13413ea9a877 108 /**
ganlikun 0:13413ea9a877 109 * @}
ganlikun 0:13413ea9a877 110 */
ganlikun 0:13413ea9a877 111
ganlikun 0:13413ea9a877 112 #ifdef __cplusplus
ganlikun 0:13413ea9a877 113 }
ganlikun 0:13413ea9a877 114 #endif
ganlikun 0:13413ea9a877 115
ganlikun 0:13413ea9a877 116 #endif /*__SYSTEM_STM32F4XX_H */
ganlikun 0:13413ea9a877 117
ganlikun 0:13413ea9a877 118 /**
ganlikun 0:13413ea9a877 119 * @}
ganlikun 0:13413ea9a877 120 */
ganlikun 0:13413ea9a877 121
ganlikun 0:13413ea9a877 122 /**
ganlikun 0:13413ea9a877 123 * @}
ganlikun 0:13413ea9a877 124 */
ganlikun 0:13413ea9a877 125 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
ganlikun 0:13413ea9a877 126