stm32烟雾报警器程序代码
时间: 2023-07-30 21:03:05 浏览: 188
STM32烟雾报警器程序代码是用于检测和报警烟雾浓度的程序代码。下面是一个简单的示例:
```c
#include <stdio.h>
#include "stm32f10x.h"
#define SMOKE_PIN GPIO_Pin_0
#define SMOKE_PORT GPIOA
int smokeThreshold = 500; // 烟雾浓度阈值
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = SMOKE_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(SMOKE_PORT, &GPIO_InitStructure);
}
void ADC_Configuration(void)
{
ADC_InitTypeDef ADC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
ADC_DeInit(ADC1);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_55Cycles5);
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while (ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while (ADC_GetCalibrationStatus(ADC1));
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
}
int main(void)
{
GPIO_Configuration();
ADC_Configuration();
while (1) {
int smokeConcentration = ADC_GetConversionValue(ADC1);
if (smokeConcentration > smokeThreshold) {
// 触发烟雾报警逻辑
printf("Smoke Detected!\n");
}
for (int i = 0; i < 50000; i++); // 延时
}
}
```
该代码中,首先对GPIO和ADC进行配置。GPIO用于连接烟雾传感器,ADC用于读取烟雾传感器输出的模拟值。然后在主循环中,获取ADC转换值并与预设的烟雾浓度阈值进行比较。如果烟雾浓度超过阈值,则触发烟雾报警逻辑,可以在此处添加相应的报警代码。最后通过延时来控制检测烟雾浓度的频率。
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