资源简介
STM32F4官方固件库与手册(标准库) 各个外设的驱动都有,使用的标准库函数编写,STM32F4xx_DSP_StdPeriph_Lib_V1.8.0
代码片段和文件信息
/**
******************************************************************************
* @file system_stm32f4xx.c
* @author MCD Application Team
* @version V1.8.0
* @date 09-November-2016
* @brief CMSIS Cortex-M4 Device Peripheral Access layer System Source File.
* This file contains the system clock configuration for STM32F4xx devices.
*
* 1. This file provides two functions and one global variable to be called from
* user application:
* - SystemInit(): Setups the system clock (System clock source PLL Multiplier
* and Divider factors AHB/APBx prescalers and Flash settings)
* depending on the configuration made in the clock xls tool.
* This function is called at startup just after reset and
* before branch to main program. This call is made inside
* the “startup_stm32f4xx.s“ file.
*
* - SystemCoreClock variable: Contains the core clock (HCLK) it can be used
* by the user application to setup the SysTick
* timer or configure other parameters.
*
* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
* be called whenever the core clock is changed
* during program execution.
*
* 2. After each device reset the HSI (16 MHz) is used as system clock source.
* Then SystemInit() function is called in “startup_stm32f4xx.s“ file to
* configure the system clock before to branch to main program.
*
* 3. If the system clock source selected by user fails to startup the SystemInit()
* function will do nothing and HSI still used as system clock source. User can
* add some code to deal with this issue inside the SetSysClock() function.
*
* 4. The default value of HSE crystal is set to 25MHz refer to “HSE_VALUE“ define
* in “stm32f4xx.h“ file. When HSE is used as system clock source directly or
* through PLL and you are using different crystal you have to adapt the HSE
* value to your own configuration.
*
* 5. This file configures the system clock as follows:
*=============================================================================
*=============================================================================
* Supported STM32F40xxx/41xxx devices
*-----------------------------------------------------------------------------
* System Clock source | PLL (HSE)
*-----------------------------------------------------------------------------
* SYSCLK(Hz) | 168000000
*-----------------------------------------------------------------------------
* HCLK(Hz)
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
......R 172641 2016-11-05 01:33 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\CMSIS_END_USER_LICENCE_AGREEMENT.pdf
......R 178493 2016-11-05 01:33 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\CMSIS_END_USER_LICENCE_AGREEMENT.rtf
......R 940127 2016-11-07 23:03 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Include\stm32f4xx.h
......R 2235 2016-11-07 23:03 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Include\system_stm32f4xx.h
......R 58945 2016-11-07 23:04 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Release_Notes.html
......R 25819 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f401xx.s
......R 29696 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f40xx.s
......R 29607 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f40_41xxx.s
......R 19189 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f410xx.s
......R 26519 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f411xe.s
......R 21484 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f412xg.s
......R 23401 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f413_423xx.s
......R 31056 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f427x.s
......R 30981 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f427_437xx.s
......R 31136 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f429_439xx.s
......R 22148 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f446xx.s
......R 30929 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\arm\startup_stm32f469_479xx.s
......R 20646 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\gcc_ride7\startup_stm32f401xx.s
......R 24092 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\gcc_ride7\startup_stm32f40xx.s
......R 24193 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\gcc_ride7\startup_stm32f40_41xxx.s
......R 25817 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\gcc_ride7\startup_stm32f427x.s
......R 25734 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\gcc_ride7\startup_stm32f427_437xx.s
......R 25734 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\gcc_ride7\startup_stm32f429_439xx.s
......R 21526 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\iar\startup_stm32f401xx.s
......R 25431 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\iar\startup_stm32f40xx.s
......R 25343 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\iar\startup_stm32f40_41xxx.s
......R 19688 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\iar\startup_stm32f410xx.s
......R 18681 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\iar\startup_stm32f411xe.s
......R 22558 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\iar\startup_stm32f412xg.s
......R 26162 2016-11-07 23:02 STM32F4xx_DSP_StdPeriph_Lib_V1.8.0\Libraries\CMSIS\Device\ST\STM32F4xx\Source\Templates\iar\startup_stm32f413_423xx.s
............此处省略3654个文件信息
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