Thai microtron community

#case
#include <16F877A.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=20000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7)
#include <math.h>

#define SHT1xDATA  PIN_B4
#define SHT1xSCK   PIN_B5
#define noACK 0
#define ACK   1

// SHT1x address=000 is currently supported
// SHT1x command code
                            //adr  command  r/w
#define STATUS_REG_W 0x06   //000   0011    0
#define STATUS_REG_R 0x07   //000   0011    1
#define MEASURE_TEMP 0x03   //000   0001    1
#define MEASURE_HUMI 0x05   //000   0010    1
#define RESET        0x1E   //000   1111    0

// constant use for SHT1x Humidity Measurement
#define C1  -4.0
#define C2  0.0405
#define C3  -0.0000028

// constat use for SHT1x Tnemperature Measurement
#define D1  -40.0
#define D2  0.01

// constant use for SHT1x True Humidity Measurement
#define T1  0.01
#define T2  0.00008

//PIC16F6X8
#define  CMCON   0x1F
#define  PORTA    0x05
#define  PORTB    0x06


void InitialChip(void);

//SHT1x Transmission Start condition
void SHTStart()
{
   output_high(SHT1xDATA);
   output_low(SHT1xSCK);
   output_high(SHT1xSCK);
   output_low(SHT1xDATA);
   output_low(SHT1xSCK);
   output_high(SHT1xSCK);
   output_high(SHT1xDATA);
   output_low(SHT1xSCK);

}

// SHT1x Connection Reset:
void SHTConReset()
{
int i;

   output_high(SHT1xDATA);

   for (i=0; i<9; i++)
   {
      output_high(SHT1xSCK);
      delay_us(2);
      output_low(SHT1xSCK);
      delay_us(2);
   }
   SHTStart();
}

// SHT1x Address & Command Mode with address=000
int SHTWrite(int Data)
{
int i;

   for (i=0x80;i>0;i/=2)        //shift bit for masking data
   {
    if(i&Data)
     output_high(SHT1xDATA);
    else 
     output_low(SHT1xDATA);

     delay_us(2);               //Snend Clock each bit
     output_high(SHT1xSCK);
     delay_us(2);
     output_low(SHT1xSCK);
   }

   output_float(SHT1xDATA);     //Change DATA Line to Input
   delay_us(2);

   output_high(SHT1xSCK);       //Clock for Acknowledge
   delay_us(2);

   i= input(SHT1xDATA);         //Get Acknowledge

   output_low(SHT1xSCK);
   delay_ms(250);
   return (i);
}

//Read data from SHT1x
long SHTRead(void)
{
int i;
long lTmp,lVal1,lVal2,lValue;

   lVal1=0;
   lVal2=0;

//get MSB from SHT1x
   for (i=0; i<8; i++)
   {
    lVal1<<=1;
    output_high(SHT1xSCK);          //Send Clock Hight
    lTmp = input(SHT1xDATA);        //Read Data Bit
    //delay_us(2);
    output_low(SHT1xSCK);           //Send Clock Low
    //delay_us(2);

    if(lTmp)
     lVal1|=1;                      //store in lVal1
   }

//Acknowledge routine for Next byte
   output_low(SHT1xDATA);
   output_high(SHT1xSCK);
   //delay_us(2);

   output_float(SHT1xDATA);         //Change to Input
   output_low(SHT1xSCK);
   //delay_us(2);

//get LSB from SHT1x
   for (i=0; i<8; i++)
   {
    lVal2<<=1;
    output_high(SHT1xSCK);          //Send Clock Hight
    lTmp = input(SHT1xDATA);        //Read Data Bit 
    //delay_us(2);
    output_low(SHT1xSCK);           //Send Clock Low
    //delay_us(2);

    if(lTmp)
      lVal2|=1;                     //store in lVal2
   }
   

   lValue = make16(lVal1,lVal2);    //Makes a 16 bit number out of two 8 bit numbers.
   return(lValue);
}
// SHT1x Soft Reset
// resets the interface, clears the status register to default values
// wait minimum 11ms before next command
void SHTSoftReset()
{
  SHTConReset();
  SHTWrite(RESET);
}

// calculate dewpoint
float sht1x_calc_dewpoint(float fRh,float fTemp)
{
   float fDewpoint;
   float fLogEW;

   fLogEW = ((7.5*fTemp)/(237.3+fTemp))+log10(fRh)-1.33923;
   fDewpoint = ((0.66077-log10(fLogEW))*(237.3))/(log10(fLogEW)-8.16077);
   return(fDewpoint);
}
void InitialChip(void)
{
    setup_comparator(NC_NC_NC_NC);   //Input Digital
    set_tris_b(0B00000000);
    set_tris_c(0B10000000);
}

// Main Program
 void main()
{
float fRh_lin;
float fRh_true;
float fTemp_true;
float fDew_point;

long lValue_rh;
long lValue_temp;
int R;

   InitialChip();
   delay_ms(200);
   set_tris_b(0x00);
//printf("test");
   SHTConReset();

   while (TRUE)
   {
     // delay >11ms before next command
      delay_ms(12);

      SHTStart();                                                        //@1 start transmission
      R=SHTWrite(MEASURE_TEMP);           //@2 measure temperature
      if(R==1)
      {
       printf("Sensor Error\n");
       delay_ms(1000);
       continue;
      }

      lValue_temp = SHTRead();

      // temperature calculation
      fTemp_true = (D1+(D2*lValue_temp));

      // delay 11ms before next command
      delay_ms(12);

      // start transmission
      SHTStart();

      // measure relative humidity
      SHTWrite(MEASURE_HUMI);
      lValue_rh = SHTRead();

      // relative humidity calculation
      fRh_lin = (C1+(C2*lValue_rh)+(C3*lValue_rh*lValue_rh));
      fRh_true = (((fTemp_true-25)*(T1+(T2*lValue_rh)))+fRh_lin);

      // dewpoint calculation
      fDew_point = sht1x_calc_dewpoint(fRh_true,fTemp_true);

      printf("T=%3.2f C\r\n",fTemp_true);
      printf("H=%3.2f%%\r\n",fRh_true);
      printf("Dew Point: %3.6fC \r\n\r\n",fDew_point);
      delay_ms(1000);
   }

}






ช่วยแก้ให้มานออก lcd หน่อยครับพอดีทำมะเป็นโปรเจ็คจบ

dunๆ