Programming: MSP430 temperature, humidity and light measurement and display

fish001

Programming: MSP430 temperature, humidity and light measurement and display [Copy link]

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;
    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;
      while((IFG2&UCA0TXIFG)==0);
    }


    for (i=0;i<40000;i++);
  }
}

tiankai001

After searching for a long time, I finally found a comment. It was not easy.