stm32烟雾传感器程序
时间: 2024-06-20 12:03:24 浏览: 53
STM32烟雾传感器程序主要是通过读取烟雾传感器的模拟输出信号,进行模拟转换,并将转换后的数字量送入STM32的ADC模块进行处理,最终通过串口、LCD等方式将检测结果输出。
以下是一个简单的STM32烟雾传感器程序的示例,仅供参考:
```c
#include "stm32f10x.h"
#include "stdio.h"
#define SMOKE_SENSOR_PIN GPIO_Pin_1
#define SMOKE_SENSOR_PORT GPIOA
#define ADC_CHANNEL ADC_Channel_1
#define ADC_RESOLUTION 4096 // 12 bits
#define VREF 3.3 // reference voltage
void GPIO_Configuration(void);
void ADC_Configuration(void);
float Read_Smoke_Sensor(void);
int main(void)
{
GPIO_Configuration();
ADC_Configuration();
USART_Configuration();
float smoke = 0.0;
char buf[50];
while(1)
{
smoke = Read_Smoke_Sensor();
sprintf(buf, "Smoke: %.2f ppm", smoke);
USART_SendString(buf);
delay_ms(1000); // delay for 1s
}
}
void GPIO_Configuration(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = SMOKE_SENSOR_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(SMOKE_SENSOR_PORT, &GPIO_InitStructure);
}
void ADC_Configuration(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
ADC_InitTypeDef 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_Cmd(ADC1, ENABLE);
ADC_RegularChannelConfig(ADC1, ADC_CHANNEL, 1, ADC_SampleTime_7Cycles5);
}
float Read_Smoke_Sensor(void)
{
uint16_t adc_value = 0;
float smoke_ppm = 0.0;
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
adc_value = ADC_GetConversionValue(ADC1);
smoke_ppm = (VREF / ADC_RESOLUTION) * adc_value;
return smoke_ppm;
}
```
相关问题:
1. 如何读取模拟传感器的数据?
2. 如何使用ADC模块进行模拟转换?
3. 什么是ADC采样时间?
4. 如何使用串口发送数据?
阅读全文