MSP430的温湿度、光照的测量和显示

3万 · 2017-8-23 21:02

温湿度传感器采用DHT11

光照传感器采用BH1750



#include "msp430x26x.h"

#include "UART1.h"

#include "sht10.h"

#include "XT2_Start.h"

#include "BH1750.h"

#include"stdio.h"



void main( void )

{

  // Stop watchdog timer to prevent time out reset

  WDTCTL = WDTPW + WDTHOLD;

  unsigned int i,a0,a1,a2,a3,a,b,c,d,e,f; 

  int Light_Data[4];

  unsigned int Sample_Data[6];

  unsigned char m;

  WDTCTL=WDTPW+WDTHOLD; 

  XT2_Start();

  UART1_Initial();

  SHT_Init();

  SHT_ConnectionReset();

  

  while(1) 

  { 

    SHT_Function();

    a=(int)(Temp_Val.f/10);

  Sample_Data[0]=a;

  b=(int)(Temp_Val.f-a*10);

  Sample_Data[1]=b;

  c=(int)((Temp_Val.f-a*10-b)*10);

  Sample_Data[2]=c;

  d=(int)(Humi_Val.f/10);

  Sample_Data[3]=d;

  e=(int)(Humi_Val.f-d*10);

  Sample_Data[4]=e;

  f=(int)((Humi_Val.f-d*10-e)*10);

  Sample_Data[5]=f;

  for(i=0;i<6;i++)

  {

    UCA0TXBUF=Sample_Data[i];

    while((IFG2&UCA0TXIFG)==0);//等待一字节的数据发送完毕

  }

    //send final data to serial interface (UART) 

    printf("temp:%5.1fC humi:%5.1f%% ",Temp_Val.f,Humi_Val.f); 

    //----------wait approx. 0.8s to avoid heating up SHTxx------------------------------ 

    for (i=0;i<40000;i++); //(be sure that the compiler doesn't eliminate this line!) 

   //---------------------------------------------------------------------------------- 

    m=get_light();

    a0=(int)(m/1000);

    Light_Data[0]=a0;

    a1=(int)((m-a0*1000)/100);

    Light_Data[1]=a1;

    a2=(int)((m-a0*1000-a1*100)/10);

    Light_Data[2]=a2;

    a3=(int)(m-a0*1000-a1*100-a2*10);

    Light_Data[3]=a3;

    for(i=0;i<4;i++)

    {

      UCA0TXBUF=Light_Data[i];

      while((IFG2&UCA0TXIFG)==0);

    }



    for (i=0;i<40000;i++);

  }

}