基于stc15f2k60s2+bmp180氣壓計，不能正常讀取bmp數(shù)據(jù) 求幫助

ID:476973 · 發(fā)表于 2019-3-8 20:30

#include "REG51.h"
#include "oled.h"
#include "bmp.h"
//***************
//**************

#include  <math.h> //Keil library
#include  <stdlib.h>  //Keil library
#include  <stdio.h> //Keil library
#include  <INTRINS.H> //Keil library
#define uchar unsigned char
#define uint unsigned int

sbit       SCL=P3^6;    //IIC??????
sbit          SDA=P3^7;    //IIC??????

#define       BMP085_SlaveAddress 0xee       //?????IIC???????

#define OSS 0       // Oversampling Setting (note: code is not set up to use other OSS values)

typedef unsigned char  BYTE;
typedef unsigned short WORD;

long  pressure;
uchar ge,shi,bai,qian,wan,shiwan;          //????
int  dis_data;                            //??

short ac1;
short ac2;
short ac3;
unsigned short ac4;
unsigned short ac5;
unsigned short ac6;
short b1;
short b2;
short mb;
short mc;
short md;

void delay(unsigned int k);

void WriteDataLCM(uchar dataW);
void WriteCommandLCM(uchar CMD,uchar Attribc);
void DisplayOneChar(uchar X,uchar Y,uchar DData);
void conversion(long temp_data);

void  Single_Write(uchar SlaveAddress,uchar REG_Address,uchar REG_data); //??????
uchar Single_Read(uchar REG_Address);                                     //???????????
void  Multiple_Read(uchar,uchar);                                        //????????????
//------------------------------------
void Delay5us();
void Delay5ms();
void BMP085_Start();
void BMP085_Stop();
void BMP085_SendACK(bit ack);
bit  BMP085_RecvACK();
void BMP085_SendByte(BYTE dat);
BYTE BMP085_RecvByte();
void BMP085_ReadPage();
void BMP085_WritePage();
//-----------------------------------

//*********************************************************
void conversion(long temp_data)
{

shiwan=temp_data/100000+0x30 ;
temp_data=temp_data%100000; //????
wan=temp_data/10000+0x30 ;
temp_data=temp_data%10000; //????
      qian=temp_data/1000+0x30 ;
temp_data=temp_data%1000; //????
bai=temp_data/100+0x30 ;
temp_data=temp_data%100;    //????
shi=temp_data/10+0x30 ;
temp_data=temp_data%10;    //????
ge=temp_data+0x30;
}

void delay(unsigned int k)
{
unsigned int i,j;
for(i=0;i<k;i++)
{
for(j=0;j<121;j++)
{;}}
}
/*******************************/

/*******************************/



/**************************************

延時5毫秒(STC90C52RC@12M)
不同的工作環(huán)境,需要調(diào)整此函
當(dāng)改用1T的MCU時,請調(diào)整此延時函數(shù)

**************************************/
void Delay5us()
{

   unsigned char i;

   _nop_();
   i = 11;
      while (--i);

}
/**************************************
??5??(STC90C52RC@12M)
???????,???????
???1T?MCU?,????????
**************************************/
void Delay5ms()             //@11.0592MHz
{
      unsigned char i, j;

      i = 54;
      j = 199;
      do
      {
            while (--j);
      } while (--i);
}

/**************************************
????
**************************************/
void BMP085_Start()
{
SDA = 1;                   //?????
SCL = 1;                   //?????
Delay5us();                //??
SDA = 0;                   //?????
Delay5us();                //??
SCL = 0;                   //?????
}

/**************************************
????
**************************************/
void BMP085_Stop()
{
SDA = 0;                   //?????
SCL = 1;                   //?????
Delay5us();                //??
SDA = 1;                   //?????
Delay5us();                //??
}

/**************************************
??????
????:ack (0:ACK 1:NAK)
**************************************/
void BMP085_SendACK(bit ack)
{
SDA = ack;                //?????
SCL = 1;                   //?????
Delay5us();                //??
SCL = 0;                   //?????
Delay5us();                //??
}

/**************************************
??????
**************************************/
bit BMP085_RecvACK()
{
SCL = 1;                   //?????
Delay5us();                //??
CY = SDA;                //?????
SCL = 0;                   //?????
Delay5us();                //??

return CY;
}

/**************************************
?IIC??????????
**************************************/
void BMP085_SendByte(BYTE dat)
{
BYTE i;

for (i=0; i<8; i++)       //8????
{
      dat <<= 1;             //????????
      SDA = CY;             //????
      SCL = 1;             //?????
      Delay5us();          //??
      SCL = 0;             //?????
      Delay5us();          //??
}
BMP085_RecvACK();
}

/**************************************
?IIC??????????
**************************************/
BYTE BMP085_RecvByte()
{
BYTE i;
BYTE dat = 0;

SDA = 1;                   //??????,??????,
for (i=0; i<8; i++)       //8????
{
      dat <<= 1;
      SCL = 1;             //?????
      Delay5us();          //??
      dat |= SDA;          //???
      SCL = 0;             //?????
      Delay5us();          //??
}
return dat;
}

//?????BMP085????*******************************

void Single_Write(uchar SlaveAddress,uchar REG_Address,uchar REG_data)
{
BMP085_Start();                //????
BMP085_SendByte(SlaveAddress); //??????+???
BMP085_SendByte(REG_Address); //???????
BMP085_SendByte(REG_data);    //???????
BMP085_Stop();                //??????
}

//?????BMP085????********************************
uchar Single_Read(uchar REG_Address)
{  uchar REG_data;
BMP085_Start();                         //????
BMP085_SendByte(BMP085_SlaveAddress);          //??????+???
BMP085_SendByte(REG_Address);          //????????
BMP085_Start();                         //????
BMP085_SendByte(BMP085_SlaveAddress+1);       //??????+???
REG_data=BMP085_RecvByte();             //???????
      BMP085_SendACK(1);
      BMP085_Stop();                         //????
return REG_data;
}

//*********************************************************
//??BMP085????,????
//*********************************************************
short Multiple_read(uchar ST_Address)
{
      uchar msb, lsb;
      short _data;
BMP085_Start();                         //????
BMP085_SendByte(BMP085_SlaveAddress); //??????+???
BMP085_SendByte(ST_Address);          //????????
BMP085_Start();                         //????
BMP085_SendByte(BMP085_SlaveAddress+1);       //??????+???

msb = BMP085_RecvByte();                //BUF[0]??
BMP085_SendACK(0);                      //??ACK
lsb = BMP085_RecvByte();
      BMP085_SendACK(1);                      //?????????NOACK

BMP085_Stop();                         //????
Delay5ms();
_data = msb << 8;
      _data |= lsb;
      return _data;
}
//********************************************************************
long bmp085ReadTemp(void)
{

BMP085_Start();                //????
BMP085_SendByte(BMP085_SlaveAddress); //??????+???
BMP085_SendByte(0xF4);                // write register address
BMP085_SendByte(0x2E);             // write register data for temp
BMP085_Stop();                //??????
      delay(10);       // max time is 4.5ms

      return (long) Multiple_read(0xF6);
}
//*************************************************************
long bmp085ReadPressure(void)
{
      long pressure = 0;

BMP085_Start();                //????
BMP085_SendByte(BMP085_SlaveAddress); //??????+???
BMP085_SendByte(0xF4);                // write register address
BMP085_SendByte(0x34);                // write register data for pressure
BMP085_Stop();                   //??????
      delay(10);                            // max time is 4.5ms
      Delay3ms();
      pressure = Multiple_read(0xF6);
      pressure &= 0x0000FFFF;

      return pressure;
//       return (long) bmp085ReadShort(0xF6);
}

//**************************************************************

//???BMP085,???????pdf????**************
void Init_BMP085()
{
      ac1 = Multiple_read(0xAA);
      ac2 = Multiple_read(0xAC);
      ac3 = Multiple_read(0xAE);
      ac4 = Multiple_read(0xB0);
      ac5 = Multiple_read(0xB2);
      ac6 = Multiple_read(0xB4);
      b1 =  Multiple_read(0xB6);
      b2 =  Multiple_read(0xB8);
      mb =  Multiple_read(0xBA);
      mc =  Multiple_read(0xBC);
      md =  Multiple_read(0xBE);
}
//***********************************************************************
void bmp085Convert()
{
      long ut;
      long up;
      long x1, x2, b5, b6, x3, b3, p;
      unsigned long b4, b7;
      long  temperature;


      ut = bmp085ReadTemp();
      ut = bmp085ReadTemp();          // ????
      up = bmp085ReadPressure();
      up = bmp085ReadPressure();  // ????

      x1 = ((long)ut - ac6) * ac5 >> 15;
      x2 = ((long) mc << 11) / (x1 + md);
      b5 = x1 + x2;
      temperature = (b5 + 8) >> 4;




   //*************

      b6 = b5 - 4000;
      x1 = (b2 * (b6 * b6 >> 12)) >> 11;
      x2 = ac2 * b6 >> 11;
      x3 = x1 + x2;
      b3 = (((long)ac1 * 4 + x3) + 2)/4;
      x1 = ac3 * b6 >> 13;
      x2 = (b1 * (b6 * b6 >> 12)) >> 16;
      x3 = ((x1 + x2) + 2) >> 2;
      b4 = (ac4 * (unsigned long) (x3 + 32768)) >> 15;
      b7 = ((unsigned long) up - b3) * (50000 >> OSS);
      if( b7 < 0x80000000)
         p = (b7 * 2) / b4 ;
         else
                  p = (b7 / b4) * 2;
      x1 = (p >> 8) * (p >> 8);
      x1 = (x1 * 3038) >> 16;
      x2 = (-7357 * p) >> 16;
      pressure = p + ((x1 + x2 + 3791) >> 4);

ID:123289 · 發(fā)表于 2019-3-9 09:27

再仔細(xì)深入地研讀“bmp180氣壓計”手冊

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基于stc15f2k60s2+bmp180氣壓計，不能正常讀取bmp數(shù)據(jù) 求幫助

基于stc15f2k60s2+bmp180氣壓計，不能正常讀取bmp數(shù)據(jù) 求幫助