资源简介
人体红外,超声波距离检测,光照度,温湿度,烟雾传感器MQ-2
代码片段和文件信息
/**
******************************************************************************
* @file system_stm32f4xx.c
* @author MCD Application Team
* @version V1.8.0
* @date 04-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
----------- --------- ---------- ----- ----
目录 0 2018-04-14 22:59 SmartHome\CMSIS\
文件 114403 2016-11-05 01:33 SmartHome\CMSIS\core_cm4.h
文件 18323 2016-11-05 01:33 SmartHome\CMSIS\core_cmFunc.h
文件 27908 2016-11-05 01:33 SmartHome\CMSIS\core_cmInstr.h
文件 22947 2016-11-05 01:33 SmartHome\CMSIS\core_cmSimd.h
目录 0 2018-04-14 22:59 SmartHome\CMSIS\startup\
文件 29607 2018-03-30 19:27 SmartHome\CMSIS\startup\startup_stm32f40_41xxx.s
文件 940126 2018-03-15 10:37 SmartHome\CMSIS\stm32f4xx.h
文件 61019 2018-03-15 10:39 SmartHome\CMSIS\system_stm32f4xx.c
文件 2235 2016-11-07 23:03 SmartHome\CMSIS\system_stm32f4xx.h
目录 0 2018-04-14 22:59 SmartHome\Driver\
目录 0 2018-04-14 22:59 SmartHome\Driver\inc\
文件 405 2018-04-02 18:01 SmartHome\Driver\inc\adc.h
文件 239 2018-03-16 15:29 SmartHome\Driver\inc\beep.h
文件 259 2018-03-17 11:36 SmartHome\Driver\inc\delay.h
文件 986 2018-04-04 17:59 SmartHome\Driver\inc\dht11.h
文件 112 2018-04-04 17:58 SmartHome\Driver\inc\flame.h
文件 330 2018-04-04 16:27 SmartHome\Driver\inc\hc-sr04.h
文件 759 2018-03-16 15:29 SmartHome\Driver\inc\key.h
文件 1064 2018-03-28 11:33 SmartHome\Driver\inc\lan8720.h
文件 645 2018-03-21 15:26 SmartHome\Driver\inc\led.h
文件 2832 2016-04-15 21:59 SmartHome\Driver\inc\malloc.h
文件 296 2018-03-21 18:02 SmartHome\Driver\inc\rs485.h
文件 168 2018-04-04 17:35 SmartHome\Driver\inc\sr501.h
文件 849 2016-04-15 21:59 SmartHome\Driver\inc\sram.h
文件 3442 2015-04-18 11:06 SmartHome\Driver\inc\sys.h
文件 367 2018-03-30 20:50 SmartHome\Driver\inc\usart.h
目录 0 2018-04-14 22:59 SmartHome\Driver\src\
文件 6793 2018-04-02 18:01 SmartHome\Driver\src\adc.c
文件 730 2018-03-29 16:39 SmartHome\Driver\src\beep.c
文件 1293 2018-03-29 17:11 SmartHome\Driver\src\delay.c
............此处省略433个文件信息
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