资源简介
STM32驱动OV2640摄像头,通过HSPI传输,可以搭配ESP8266实现传世图片。
代码片段和文件信息
/**
******************************************************************************
* @file system_stm32f4xx.c
* @author MCD Application Team
* @version V1.4.0
* @date 04-August-2014
* @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
----------- --------- ---------- ----- ----
目录 0 2019-01-09 18:44 Code 1.0\
目录 0 2019-01-04 14:44 Code 1.0\CMSIS\
文件 114403 2016-11-05 01:33 Code 1.0\CMSIS\core_cm4.h
文件 18323 2016-11-05 01:33 Code 1.0\CMSIS\core_cmFunc.h
文件 27908 2016-11-05 01:33 Code 1.0\CMSIS\core_cmInstr.h
文件 22947 2016-11-05 01:33 Code 1.0\CMSIS\core_cmSimd.h
目录 0 2019-01-04 14:44 Code 1.0\CMSIS\STARTUP\
文件 29605 2016-04-15 21:58 Code 1.0\CMSIS\STARTUP\startup_stm32f40_41xxx.s
文件 940127 2016-11-07 23:03 Code 1.0\CMSIS\stm32f4xx.h
文件 47778 2019-01-09 10:24 Code 1.0\CMSIS\system_stm32f4xx.c
文件 2235 2016-11-07 23:03 Code 1.0\CMSIS\system_stm32f4xx.h
目录 0 2019-01-17 14:04 Code 1.0\PROJECT\
目录 0 2019-01-04 14:46 Code 1.0\PROJECT\DebugConfig\
文件 2851 2017-11-21 16:21 Code 1.0\PROJECT\DebugConfig\Target_1_STM32F407VETx.dbgconf
目录 0 2019-01-04 14:54 Code 1.0\PROJECT\Listings\
文件 130771 2019-01-17 11:27 Code 1.0\PROJECT\Listings\Project.map
文件 79374 2019-01-12 16:43 Code 1.0\PROJECT\Listings\startup_stm32f40_41xxx.lst
目录 0 2019-01-17 11:27 Code 1.0\PROJECT\ob
文件 453274 2019-01-12 16:43 Code 1.0\PROJECT\ob
文件 2242 2019-01-12 16:43 Code 1.0\PROJECT\ob
文件 494764 2019-01-12 16:43 Code 1.0\PROJECT\ob
文件 451784 2019-01-12 16:43 Code 1.0\PROJECT\ob
文件 2284 2019-01-12 16:43 Code 1.0\PROJECT\ob
文件 494160 2019-01-12 16:43 Code 1.0\PROJECT\ob
文件 451453 2019-01-12 16:43 Code 1.0\PROJECT\ob
文件 2327 2019-01-12 16:43 Code 1.0\PROJECT\ob
文件 489192 2019-01-12 16:43 Code 1.0\PROJECT\ob
文件 458833 2019-01-17 11:27 Code 1.0\PROJECT\ob
文件 2365 2019-01-17 11:27 Code 1.0\PROJECT\ob
文件 500032 2019-01-17 11:27 Code 1.0\PROJECT\ob
文件 452180 2019-01-12 16:43 Code 1.0\PROJECT\ob
............此处省略279个文件信息
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