STM32F407 USB虚拟串口

STM32F407 USB虚拟串口 不下后悔

/**
  ******************************************************************************
  * @file    system_stm32f4xx.c
  * @author  MCD Application Team
  * @version V1.0.2
  * @date    05-March-2012
  * @brief   CMSIS Cortex-M4 Device Peripheral Access layer System Source File.
  *          This file contains the system clock configuration for STM32F4xx devices
  *          and is generated by the clock configuration tool
  *          stm32f4xx_Clock_Configuration_V1.0.1.xls
  *             
  * 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 STM32F4xx device revision    | Rev A
  *-----------------------------------------------------------------------------
  *        System Clock source                    | PLL （HSE）
  *-----------------------------------------------------------------------------
  *        SYSCLK（Hz）                             | 168000000
  *-----

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件     530853  2014-01-04 14:25  红龙407_USB_Device_VCP\Libraries\CMSIS\Device\Include\stm32f4xx.h

     文件       2222  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\CMSIS\Device\Include\system_stm32f4xx.h

     文件      29637  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\CMSIS\Device\startup_stm32f4xx.s

     文件      21856  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\CMSIS\Device\system_stm32f4xx.c

     文件       1120  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\CMSIS\Include\arm_common_tables.h

     文件     240326  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\CMSIS\Include\arm_math.h

     文件      79281  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\CMSIS\Include\core_cm4.h

     文件      23979  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\CMSIS\Include\core_cm4_simd.h

     文件      15691  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\CMSIS\Include\core_cmFunc.h

     文件      16108  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\CMSIS\Include\core_cmInstr.h

     文件       6923  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\misc.h

     文件      32548  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_adc.h

     文件      27317  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_can.h

     文件       2415  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_crc.h

     文件      12659  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_cryp.h

     文件      14945  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_dac.h

     文件       4295  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_dbgmcu.h

     文件      12976  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_dcmi.h

     文件      28879  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_dma.h

     文件       8011  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_exti.h

     文件      14594  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_flash.h

     文件      27175  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_fsmc.h

     文件      17700  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_gpio.h

     文件       9083  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_hash.h

     文件      31645  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_i2c.h

     文件       4322  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_iwdg.h

     文件       6153  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_pwr.h

     文件      24873  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_rcc.h

     文件       3957  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_rng.h

     文件      40544  2012-03-22 22:44  红龙407_USB_Device_VCP\Libraries\STM32F4xx_StdPeriph_Driver\inc\stm32f4xx_rtc.h

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