STM32烟雾报警器程序

ID:448371 · 发表于 2020-4-5 19:57

使用DHT11温湿度传感器与MQ-2烟雾传感器

单片机源程序如下:

#include "led.h"
#include "delay.h"
#include "sys.h"
#include "usart.h"
#include "hmi.h"
#include "adc.h"
#include "stdio.h"
#include "string.h"
#include "dht11.h"
#include "stdlib.h"
#include "math.h"
#include "lcd.h"
u8 table1[20];
u8 table2[20];
u8 table3[20];
u8 table4[20];
u8 table5[20];
u8 table6[20];
DHT11_Data_TypeDef DHT11_Data;
int main(void)
{
u16 adcx;
float temp;
float value=2.5;
float ppm;
delay_init(); //延时函数初始化
uart_init(9600); //串口初始化为9600
LED_Init(); //初始化与LED连接的硬件接口
Adc_Init(); //ADC初始化
LCD_Init();
DHT11_GPIO_Config();
HMISendstart();
while(1)
{
adcx=Get_Adc_Average(ADC_Channel_1,10);
sprintf((char*)table1,"%d",adcx);
HMISends("t3.txt=\""); //向串口屏发送电压值
HMISends(table1);
HMISends("\"");
HMISendb(0xff);
temp=(float)adcx*(3.3/4096);
ppm=pow((0.1/temp)-0.02,-1.52695067);
sprintf((char*)table5,"%f",ppm);
sprintf((char*)table2,"%f",temp);
HMISends("t4.txt=\""); //向串口屏发送电压值
HMISends(table2);
HMISends("\"");
HMISendb(0xff);
HMISends("t11.txt=\""); //向串口屏发送电压值
HMISends(table5);
HMISends("\"");
HMISendb(0xff);
if( Read_DHT11(&DHT11_Data)==SUCCESS)
{
LED0=!LED0;
sprintf((char*)table3,"%d",DHT11_Data.humi_int);
HMISends("t6.txt=\""); //向串口屏发送电压值
HMISends(table3);
HMISends("\"");
HMISendb(0xff);
sprintf((char*)table4,"%d",DHT11_Data.temp_int);
HMISends("t8.txt=\""); //向串口屏发送电压值
HMISends(table4);
HMISends("\"");
HMISendb(0xff);
}
if(USART_RX_STA&0x8000)
{
if(strcmp((char*)USART_RX_BUF,"moist")==0)
{
JDQ=0;
delay_ms(1000);
}
else
{
value=atof((char*)USART_RX_BUF);
}
memset(USART_RX_BUF,0,sizeof(USART_RX_BUF));
USART_RX_STA=0;
}
if((temp>value)||(temp>2.5))
{
JDQ=0;
BEEP=0;
}
else
{
JDQ=1;
BEEP=1;
}
delay_ms(250);
}
}

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