新人求助，求基于单片机控制的数字气压计程序
在网上找到了段程序，但是有点问题，缺少key的头文件，求大神帮忙，谢谢！
课题是基于单片机控制的数字气压计，单片机是STC80C52或AT89S52，传感器BMP085，显示器LCD1602
要求：1.LCD显示当前气压和气压报警值，超过报警值，蜂鸣器响，LED灯亮
2.按下S1，恢复初始报警值，按下S2进入报警值设置，按下S3设置报警值+1.按下S 4设置报警值-1，再按下S2，退出报警值设置，LED正常显示
参考程序：
#include <REG51.H>
#include <math.h> //Keil library
#include <stdlib.h> //Keil library
#include <stdio.h> //Keil library
#include <INTRINS.H>//Keil library
#include <key.h>
#define uchar unsigned char
#define uint unsigned int
#define DataPort P0 //LCD1602数据端口
sbit SCL=P3^6; //IIC时钟引脚定义
sbit SDA=P3^7; //IIC数据引脚定义
sbit LCM_RS=P2^5; //LCD1602命令端口
sbit LCM_RW=P2^6; //LCD1602命令端口
sbit LCM_EN=P2^7; //LCD1602命令端口
sbit BEEP=P3^4; //定义蜂鸣器
#define BMP085_SlaveAddress 0xee //定义器件在IIC总线中的从地址
#define OSS 0 // Oversampling Setting (note: code is not set up to use other OSS values)
typedef unsigned char BYTE;
typedef unsigned short WORD;
uchar ge,shi,bai,qian,wan,shiwan; //显示变量
int dis_data; //变量
bit beep_st; //蜂鸣器间隔标志
uchar x=0; //计数器
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 InitLcd(); //初始化lcd1602
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(ucharSlaveAddress,uchar REG_Address,uchar REG_data); //单个写入数据
uchar Single_Read(uchar REG_Address); //单个读取内部寄存器数据
void Multiple_Read(uchar,uchar); //连续的读取内部寄存器数据
//------------------------------------
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 InitTimer(void)
{
TMOD=0x1;
TH0=0x4c;
TL0=0x00; //50ms（晶振11.0592M）
EA=1; //全局中断开关
TR0=1;
ET0=1; //开启定时器0
}
/*****定时器0中断服务程序*****/
void timer0(void) interrupt 1
{
TH0=0x4c;
TL0=0x00;
x++;
}
void conversion(long temp_data)
{
shiwan=temp_data/100000+0x30;
temp_data=temp_data%100000; //取余运算
wan=temp_data/10000+0x30 ;
temp_data=temp_data%10000; //取余运算
qian=temp_data/1000+0x30 ;
temp_data=temp_data%1000; //取余运算
bai=temp_data/100+0x30 ;
temp_data=temp_data%100; //取余运算
shi=temp_data/10+0x30 ;
temp_data=temp_data%10; //取余运算
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++)
{;}}
}
unsigned char rolmove(unsigned char m)
{
unsigned char a,b,c,d,e,f,g,h;
a=(m&0x01)<<7;
b=(m&0x02)<<5;
c=(m&0x04)<<3;
d=(m&0x08)<<1;
e=(m&0x10)>>1;
f=(m&0x20)>>3;
g=(m&0x40)>>5;
h=(m&0x80)>>7;
m=a|b|c|d|e|f|g|h;
return m;
}
/*******************************/
void WaitForEnable(void)
{
DataPort=0xff;
LCM_RS=0;LCM_RW=1;_nop_();
LCM_EN=1;_nop_();_nop_();
while(rolmove(DataPort)&0x80);
LCM_EN=0;
}
/*******************************/
void WriteCommandLCM(uchar CMD,uchar Attribc)
{
if(Attribc)WaitForEnable();
LCM_RS=0;LCM_RW=0;_nop_();
DataPort=rolmove(CMD);_nop_();
LCM_EN=1;_nop_();_nop_();LCM_EN=0;
}
/*******************************/
void WriteDataLCM(uchar dataW)
{
WaitForEnable();
LCM_RS=1;LCM_RW=0;_nop_();
DataPort=rolmove(dataW);_nop_();
LCM_EN=1;_nop_();_nop_();LCM_EN=0;
}
/***********************************/
void InitLcd()
{
WriteCommandLCM(0x38,1);
WriteCommandLCM(0x08,1);
WriteCommandLCM(0x01,1);
WriteCommandLCM(0x06,1);
WriteCommandLCM(0x0c,1);
}
/***********************************/
void DisplayOneChar(uchar X,uchar Y,uchar DData)
{
Y&=1;
X&=15;
if(Y)X|=0x40;
X|=0x80;
WriteCommandLCM(X,0);
WriteDataLCM(DData);
}
void Delay5us()
{
_nop_();_nop_();_nop_();_nop_();
_nop_();_nop_();_nop_();_nop_();
_nop_();_nop_();_nop_();_nop_();
_nop_();_nop_();_nop_();_nop_();
}
void Delay5ms()
{
WORD n = 560;
while (n--);
}
/**************************************
起始信号
**************************************/
void BMP085_Start()
{
SDA = 1; //拉高数据线
SCL = 1; //拉高时钟线
Delay5us(); //延时
SDA = 0; //产生下降沿
Delay5us(); //延时
SCL = 0; //拉低时钟线
}
/**************************************
停止信号
**************************************/
void BMP085_Stop()
{
SDA = 0; //拉低数据线
SCL = 1; //拉高时钟线
Delay5us(); //延时
SDA = 1; //产生上升沿
Delay5us(); //延时
}
void BMP085_SendACK(bit ack)
{
SDA = ack; //写应答信号
SCL = 1; //拉高时钟线
Delay5us(); //延时
SCL = 0; //拉低时钟线
Delay5us(); //延时
}
/**************************************
接收应答信号
**************************************/
bit BMP085_RecvACK()
{
SCL = 1; //拉高时钟线
Delay5us(); //延时
CY = SDA; //读应答信号
SCL = 0; //拉低时钟线
Delay5us(); //延时
return CY;
}
/**************************************
向IIC总线发送一个字节数据
**************************************/
void BMP085_SendByte(BYTE dat)
{
BYTE i;
for (i=0; i<8; i++) //8位计数器
{
dat <<= 1; //移出数据的最高位
SDA = CY; //送数据口
SCL = 1; //拉高时钟线
Delay5us(); //延时
SCL = 0; //拉低时钟线
Delay5us(); //延时
}
BMP085_RecvACK();
}
/**************************************
从IIC总线接收一个字节数据
**************************************/
BYTE BMP085_RecvByte()
{
BYTE i;
BYTE dat = 0;
SDA = 1; //使能内部上拉,准备读取数据,
for (i=0; i<8; i++) //8位计数器
{
dat <<= 1;
SCL = 1; //拉高时钟线
Delay5us(); //延时
dat |= SDA; //读数据
SCL = 0; //拉低时钟线
Delay5us(); //延时
}
return dat;
}
//读出BMP085内部数据,连续两个
short Multiple_read(uchar ST_Address)
{
uchar msb, lsb;
short _data;
BMP085_Start(); //起始信号
BMP085_SendByte(BMP085_SlaveAddress); //发送设备地址+写信号
BMP085_SendByte(ST_Address); //发送存储单元地址
BMP085_Start(); //起始信号
BMP085_SendByte(BMP085_SlaveAddress+1); //发送设备地址+读信号
msb = BMP085_RecvByte(); //BUF[0]存储
BMP085_SendACK(0); //回应ACK
lsb = BMP085_RecvByte();
BMP085_SendACK(1); //最后一个数据需要回NOACK
BMP085_Stop(); //停止信号
Delay5ms();
_data = msb << 8;
_data |= lsb;
return _data;
}
long bmp085ReadTemp(void)
{
BMP085_Start(); //起始信号
BMP085_SendByte(BMP085_SlaveAddress); //发送设备地址+写信号
BMP085_SendByte(0xF4); // write register address
BMP085_SendByte(0x2E); //write register data for temp
BMP085_Stop(); //发送停止信号
delay(10); // max time is 4.5ms
return (long)Multiple_read(0xF6);
}
long bmp085ReadPressure(void)
{
long pressure = 0;
BMP085_Start(); //起始信号
BMP085_SendByte(BMP085_SlaveAddress); //发送设备地址+写信号
BMP085_SendByte(0xF4); // write register address
BMP085_SendByte(0x34); // write register data for pressure
BMP085_Stop(); //发送停止信号
delay(10); // max time is 4.5ms
pressure =Multiple_read(0xF6);
pressure &= 0x0000FFFF;
return pressure;
//return (long)bmp085ReadShort(0xF6);
}
//初始化BMP085
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;
long pressure;
ut = bmp085ReadTemp();
ut = bmp085ReadTemp(); // 读取温度
up = bmp085ReadPressure();
up =bmp085ReadPressure(); // 读取压强
x1 = ((long)ut - ac6) * ac5>> 15;
x2 = ((long) mc <<11) / (x1 + md);
b5 = x1 + x2;
temperature = (b5 + 8) >> 4;
conversion(shangxian);//显示报警值
DisplayOneChar(4,1,'V');
DisplayOneChar(5,1,':');
DisplayOneChar(6,1,shiwan);
DisplayOneChar(7,1,wan);
DisplayOneChar(8,1,qian);
DisplayOneChar(9,1,'.');
DisplayOneChar(10,1,bai);
DisplayOneChar(11,1,shi);
DisplayOneChar(12,1,'K'); //气压单位
DisplayOneChar(13,1,'p');
DisplayOneChar(14,1,'a');
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);
if(x>=2){beep_st=~beep_st;x=0;}
if(pressure>shangxian&&beep_st==1)BEEP=1;
else BEEP=0;
conversion(pressure);
DisplayOneChar(4,0,'P'); //显示压强
DisplayOneChar(5,0,':');
DisplayOneChar(6,0,shiwan);
DisplayOneChar(7,0,wan);
DisplayOneChar(8,0,qian);
DisplayOneChar(9,0,'.');
DisplayOneChar(10,0,bai);
DisplayOneChar(11,0,shi);
DisplayOneChar(12,0,'K'); //气压单位
DisplayOneChar(13,0,'p');
DisplayOneChar(14,0,'a');
}
//******主程序********
void main()
{
delay(50); //上电延时
InitLcd(); //液晶初始化
Init_BMP085(); //初始化BMP085
BEEP=0;
InitTimer(); //初始化定时器
while(1) //循环
{
bmp085Convert();
delay(1000);
checkkey();
if(set_st==0) WriteCommandLCM(0x0c,1);
if(set_st==1)
{
WriteCommandLCM(0xcb,1);
WriteCommandLCM(0x0d,1);
Delay1(150);
}
}
}
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