资源简介
基于STM32F030开发板的MQ7传感器开发。MQ-7气体传感器所使用的气敏材料是在清洁空气中电导率较低的二氧化锡(SnO2)。采用高低温循环检测方式低温(1.5v加热)检测一氧化碳,高温(5.0v加热)清洗低温时吸附的杂散气体,传感器的电导率随空气中一氧化碳气体浓度增加而增大,使用简单的电路即可将电导率的变化转换为与该气体浓度相对应的输出信号。
代码片段和文件信息
/**
******************************************************************************
* @file system_stm32f0xx.c
* @author MCD Application Team
* @version V1.4.0
* @date 05-December-2014
* @brief CMSIS Cortex-M0 Device Peripheral Access layer System Source File.
* This file contains the system clock configuration for STM32F0xx devices
* and is generated by the clock configuration tool
* STM32F0xx_Clock_Configuration_V1.0.0.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_stm32f0xx.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 (8 MHz Range) is used as system clock source.
* Then SystemInit() function is called in “startup_stm32f0xx.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 8MHz refer to “HSE_VALUE“ define
* in “stm32f0xx.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:
*=============================================================================
* System Clock Configuration
*=============================================================================
* System Clock source | PLL(HSE)
*-----------------------------------------------------------------------------
* SYSCLK | 48000000 Hz
*-----------------------------------------------------------------------------
* HCLK | 48000000 Hz
*--------------
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2020-03-01 11:03 MQ7一氧化碳传感器\
目录 0 2019-04-08 14:32 MQ7一氧化碳传感器\Libraries\
目录 0 2019-06-19 13:51 MQ7一氧化碳传感器\Libraries\CMSIS\
文件 24914 2014-12-02 18:37 MQ7一氧化碳传感器\Libraries\CMSIS\CMSIS END USER LICENCE AGREEMENT.pdf
目录 0 2019-04-08 14:32 MQ7一氧化碳传感器\Libraries\CMSIS\Device\
目录 0 2019-04-08 14:32 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\
目录 0 2019-06-19 13:51 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\
目录 0 2019-04-08 14:32 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Include\
文件 462509 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Include\stm32f0xx.h
文件 2223 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Include\system_stm32f0xx.h
目录 0 2019-04-08 14:32 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\
目录 0 2019-04-08 14:32 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\
目录 0 2019-04-08 14:32 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\
文件 10677 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f030.s
文件 10953 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f030xc.s
文件 10476 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f031.s
文件 11304 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f042.s
文件 11312 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f051.s
文件 10639 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f070x6.s
文件 11130 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f070xb.s
文件 11772 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f072.s
文件 11704 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f091.s
文件 11314 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f0xx.s
文件 10480 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f0xx_ld.s
目录 0 2019-04-08 14:32 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\gcc_ride7\
文件 8663 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\gcc_ride7\startup_stm32f030.s
文件 8483 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\gcc_ride7\startup_stm32f031.s
文件 9003 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\gcc_ride7\startup_stm32f042.s
文件 9103 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\gcc_ride7\startup_stm32f051.s
文件 9439 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\gcc_ride7\startup_stm32f072.s
文件 9096 2014-12-05 00:34 MQ7一氧化碳传感器\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\gcc_ride7\startup_stm32f0xx.s
............此处省略523个文件信息
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