zigbee温湿度DHT11代码

ID:835881 · 发表于 2022-1-1 21:19

#include <ioCC2530.h>
#include "OnBoard.h"

#define uint unsigned int
#define uchar unsigned char

#define wenshi P0_6

/*******函数声明*********/
void Delay_us(void); //1 us延时
void Delay_10us(void); //10 us延时
void Delay_ms(uint Time);//n ms延时
void COM(void); // 温湿写入
void DHT11(void) ;  //温湿传感启动

//温湿度定义
uchar ucharFLAG,uchartemp;
uchar shidu_shi,shidu_ge,wendu_shi,wendu_ge=4;
uchar ucharT_data_H,ucharT_data_L,ucharRH_data_H,ucharRH_data_L,ucharcheckdata;
uchar ucharT_data_H_temp,ucharT_data_L_temp,ucharRH_data_H_temp,ucharRH_data_L_temp,ucharcheckdata_temp;
uchar ucharcomdata;

uchar temp[2]={0,0};
uchar temp1[5]="temp=";
uchar humidity[2]={0,0};
uchar humidity1[9]="humidity=";

/****************************
      延时函数
*****************************/
void Delay_us() //1 us延时
{
MicroWait(1);
}

void Delay_10us() //10 us延时
{
  MicroWait(10);
}

void Delay_ms(uint Time)//n ms延时
{
  unsigned char i;
  while(Time--)
  {
for(i=0;i<100;i++)
   Delay_10us();
  }
}

/***********************
温湿度传感
***********************/
void COM(void) // 温湿写入
{
uchar i;
for(i=0;i<8;i++)
{
   ucharFLAG=2;
   while((!wenshi)&&ucharFLAG++);
   Delay_10us();
   Delay_10us();
   Delay_10us();
   uchartemp=0;
   if(wenshi)uchartemp=1;
   ucharFLAG=2;
   while((wenshi)&&ucharFLAG++);
   if(ucharFLAG==1)break;
   ucharcomdata<<=1;
   ucharcomdata|=uchartemp;
   }
}

void DHT11(void) //温湿传感启动
{
wenshi=0;
Delay_ms(19);  //>18MS
wenshi=1;
P0DIR &= ~0x40; //重新配置IO口方向
Delay_10us();
Delay_10us();
Delay_10us();
Delay_10us();
   if(!wenshi)
   {
   ucharFLAG=2;
   while((!wenshi)&&ucharFLAG++);
   ucharFLAG=2;
   while((wenshi)&&ucharFLAG++);
   COM();
   ucharRH_data_H_temp=ucharcomdata;
   COM();
   ucharRH_data_L_temp=ucharcomdata;
   COM();
   ucharT_data_H_temp=ucharcomdata;
   COM();
   ucharT_data_L_temp=ucharcomdata;
   COM();
   ucharcheckdata_temp=ucharcomdata;
   wenshi=1;
   uchartemp=(ucharT_data_H_temp+ucharT_data_L_temp+ucharRH_data_H_temp+ucharRH_data_L_temp);
   if(uchartemp==ucharcheckdata_temp)
   {
      ucharRH_data_H=ucharRH_data_H_temp;
      ucharRH_data_L=ucharRH_data_L_temp;
      ucharT_data_H=ucharT_data_H_temp;
      ucharT_data_L=ucharT_data_L_temp;
      ucharcheckdata=ucharcheckdata_temp;
   }
      wendu_shi=ucharT_data_H/10;
      wendu_ge=ucharT_data_H%10;

      shidu_shi=ucharRH_data_H/10;
      shidu_ge=ucharRH_data_H%10;
}
else //没用成功读取，返回0
{
      wendu_shi=0;
      wendu_ge=0;

      shidu_shi=0;
      shidu_ge=0;
}
P0DIR |= 0x40; //IO口需要重新配置
}

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