基于51單片機的脈搏體溫血壓檢測儀Proteus仿真程序 - ELEOK

#include <reg52.h>
#include <intrins.h>
#include <stdio.h>
#define uint unsigned int
#define uchar unsigned char
#define ulong unsigned long //宏定義
#define LCD_DATA P0 //定義P0口為LCD_DATA
unsigned char getdata; //獲取ADC轉換回來的值
unsigned char dispbuf[4];
unsigned int OverCounter = 0;
unsigned char ptemp;
bit OverFlg = 0;
unsigned int temp,ppress = 0;
float press;
char KEY_TIMES = 0;
char KEY_Set_TIMES = 0;
sbit LCD_RS =P2^5;
sbit LCD_RW =P2^6;
sbit LCD_E =P2^7; //定義LCD控制引腳
#define R24C04ADD 0xA1
#define W24C04ADD 0xA0
//ADC0832的引腳
sbit ADCS =P2^2; //ADC0832 chip seclect
sbit ADDI =P2^4; //ADC0832 k in
sbit ADDO =P2^4; //ADC0832 k out
sbit ADCLK =P2^3; //ADC0832 clock signal
sbit KEY =P1^7;
sbit KEY_Set = P3^0;
sbit KEY_ADD = P3^1;
sbit KEY_DEC = P3^2;
sbit speaker =P2^0; //蜂鳴器引腳定義
sbit DQ=P3^7;
void delay5ms(void); //誤差 0us
void LCD_WriteData(uchar LCD_1602_DATA); /********LCD1602數據寫入***********/
void LCD_WriteCom(uchar LCD_1602_COM); /********LCD1602命令寫入***********/
void lcd_1602_word(uchar Adress_Com,uchar Num_Adat,uchar *Adress_Data); /*1602字符顯示函數，變量依次為字符顯示首地址，顯示字符長度，所顯示的字符*/
void InitLcd();//液晶初始化函數
unsigned int Adc0832(unsigned char channel);
void LCD1602_Write_char( unsigned char *prointer );
uchar Xintiao_H=110; //脈搏上限
uint wendu=0;
/*****延時子程序*****/
void Delay_DS18B20(int num)
{
while(num--) ;
}
/*****初始化DS18B20*****/
void Init_DS18B20(void)
{
unsigned char x=0;
DQ = 1; //DQ復位
Delay_DS18B20(8); //稍做延時
DQ = 0; //單片機將DQ拉低
Delay_DS18B20(80); //精確延時，大于480us
DQ = 1; //拉高總線
Delay_DS18B20(34);
}
/*****讀一個字節*****/
unsigned char ReadOneChar(void)
{
unsigned char i=0;
unsigned char dat = 0;
for (i=8;i>0;i--)
{
DQ = 0; // 給脈沖信號
dat>>=1;
DQ = 1; // 給脈沖信號
if(DQ)
dat|=0x80;
Delay_DS18B20(4);
}
return(dat);
}
void WriteOneChar(unsigned char dat)
{
unsigned char i=0;
for (i=8; i>0; i--)
{
DQ = 0;
DQ = dat&0x01;
Delay_DS18B20(5);
DQ = 1;
dat>>=1;
}
}
/*****讀取溫度*****/
unsigned int ReadTemperature(void)
{
unsigned char a=0;
unsigned char b=0;
unsigned int t=0;
float tt=0;
Init_DS18B20();
WriteOneChar(0xCC); //跳過讀序號列號的操作
WriteOneChar(0x44); //啟動溫度轉換
Init_DS18B20();
WriteOneChar(0xCC); //跳過讀序號列號的操作
WriteOneChar(0xBE); //讀取溫度寄存器
a=ReadOneChar(); //讀低8位
b=ReadOneChar(); //讀高8位
t=b;
t<<=8;
t=t|a;
tt=t*0.0625;
t= tt*10+0.5; //放大10倍輸出并四舍五入
return(t);
}
//按鍵掃描
void KEY_SCAN( void )
{
if( KEY == 0 )
{
delay5ms();
if( KEY == 0 )
{
delay5ms();
while( !KEY );
KEY_TIMES++;
if( KEY_TIMES > 1 )
{
KEY_TIMES = 0;
}
LCD_WriteCom( 0x80 );
LCD1602_Write_char(" ");
LCD_WriteCom( 0x80+0x40 );
LCD1602_Write_char(" ");
}
}
if( KEY_Set == 0 )
{
delay5ms();
if( KEY_Set == 0 )
{
delay5ms();
while( !KEY_Set );
KEY_Set_TIMES++;
if( KEY_Set_TIMES > 1 )
{
KEY_Set_TIMES = 0;
}
LCD_WriteCom( 0x80 );
LCD1602_Write_char(" ");
LCD_WriteCom( 0x80+0x40 );
LCD1602_Write_char(" ");
}
}
}
//設置心率告警值
void KEY_Set_Rate( void )
{
if( KEY_ADD == 0 )
{
delay5ms();
if( KEY_ADD == 0 )
{
delay5ms();
while( !KEY_ADD );
Xintiao_H++;
if( Xintiao_H >= 160 )
{
Xintiao_H = 160;
}
}
}
if( KEY_DEC == 0 )
{
delay5ms();
if( KEY_DEC == 0 )
{
delay5ms();
while( !KEY_DEC );
Xintiao_H--;
if( Xintiao_H <= 60 )
{
Xintiao_H = 60;
}
}
}
}
//=====================================================================================
//=====================================================================================
//=====================================================================================
void main() //主函數
{
InitLcd();
while(1) //進入循環
{
KEY_SCAN();
getdata=Adc0832(0);
temp=getdata/2-5;
if( temp > Xintiao_H )
{
speaker = 0;
}
else
{
speaker = 1;
}
temp = 0;
if( KEY_Set_TIMES == 0 )
{
if( KEY_TIMES == 1 )
{
getdata=Adc0832(0);
if(14<getdata<243) //當壓力值介于15kpa到115kpa之間時，遵循線性變換
{
// int vary=getdata; //y=(115-15)/(243-13)*X+15kpa
temp=getdata*10/2-50; //測試時補償值為9.3
// temp=(int)(press*10); //放大10倍，便于后面的計算
if(temp != ppress)
{
ppress = temp;
OverFlg = 1;
}
dispbuf[3]=temp/1000; //取壓力值百位
dispbuf[2]=(temp%1000)/100; //取壓力值十位
dispbuf[1]=((temp%1000)%100)/10; //取壓力值個位
dispbuf[0]=((temp%1000)%100)%10; //取壓力值十分位
LCD_WriteCom( 0x80 );
LCD1602_Write_char( " heart rate " );
LCD_WriteCom( 0x80 + 0x40 );
LCD1602_Write_char("Rate:");
LCD_WriteData( 0x30 + dispbuf[3] );
LCD_WriteData( 0x30 + dispbuf[2] );
LCD_WriteData( 0x30 + dispbuf[1] );
LCD_WriteData( '.' );
LCD_WriteData( 0x30 + dispbuf[0] );
}
}
if( KEY_TIMES == 0 )
{
lcd_1602_word(0x80,16," temperature "); //初始化顯示
wendu=ReadTemperature();
lcd_1602_word(0xc0,10," Temp: ");//顯示第二行數據
LCD_WriteCom(0x80+0x40+10);
LCD_WriteData(wendu/100+0x30);
LCD_WriteData(wendu%100/10+0x30);
LCD_WriteData('.');
LCD_WriteData(wendu%100%10+0x30);
LCD_WriteData(0xdf);
LCD_WriteData('C');
}
}
else
{
KEY_Set_Rate();
dispbuf[3]=Xintiao_H/100; //取設置壓力值百位
dispbuf[2]=Xintiao_H%100/10; //取設置壓力值十位
dispbuf[1]=Xintiao_H%10; //取設置壓力值個位
LCD_WriteCom( 0x80 );
LCD1602_Write_char( " Set heart rate " );
LCD_WriteCom( 0x80 + 0x40 );
LCD1602_Write_char("warning:");
LCD_WriteData( 0x30 + dispbuf[3] );
LCD_WriteData( 0x30 + dispbuf[2] );
LCD_WriteData( 0x30 + dispbuf[1] );
}
}
}
/**Adress_Com顯示地址，Num_Adat顯示字符數量，Adress_Data顯示字符串內容**/
void lcd_1602_word(uchar Adress_Com,uchar Num_Adat,uchar *Adress_Data)
{
uchar a=0;
uchar Data_Word;
LCD_WriteCom(Adress_Com); //選中地址
for(a=0;a<Num_Adat;a++) //for循環決定顯示字符個數
{
Data_Word=*Adress_Data; //讀取字符串數據
LCD_WriteData(Data_Word); //顯示字符串
Adress_Data++; //顯示地址加一
}
}
/***************1602函數*******************/
void LCD_WriteData(uchar LCD_1602_DATA) /********LCD1602數據寫入***********/
{
delay5ms(); //操作前短暫延時，保證信號穩定
LCD_E=0;
LCD_RS=1;
LCD_RW=0;
_nop_();
LCD_E=1;
LCD_DATA=LCD_1602_DATA;
LCD_E=0;
LCD_RS=0;
}
/********LCD1602命令寫入***********/
void LCD_WriteCom(uchar LCD_1602_COM)
{
delay5ms();//操作前短暫延時，保證信號穩定
LCD_E=0;
LCD_RS=0;
LCD_RW=0;
_nop_();
LCD_E=1;
LCD_DATA=LCD_1602_COM;
LCD_E=0;
LCD_RS=0;
}
void InitLcd() //初始化液晶函數
{
delay5ms();
delay5ms();
LCD_WriteCom(0x38); //display mode
LCD_WriteCom(0x38); //display mode
LCD_WriteCom(0x38); //display mode
LCD_WriteCom(0x06); //顯示光標移動位置
LCD_WriteCom(0x0c); //顯示開及光標設置
LCD_WriteCom(0x01); //顯示清屏
delay5ms();
delay5ms();
}
void delay5ms(void) //5ms延時函數
{
unsigned char a,b;
for(b=185;b>0;b--)
for(a=12;a>0;a--);
}
/*=========================================
//LCD1602寫字符串
=========================================*/
void LCD1602_Write_char( unsigned char *prointer ) //1602 字符串處理
{
while( *prointer != '\0' )
{
LCD_WriteData( *prointer );
prointer++;
}
}
/************
讀ADC0832函數
************/
//采集并返回
unsigned int Adc0832(unsigned char channel) //AD轉換，返回結果
{
unsigned char i=0;
unsigned char j;
unsigned int dat=0;
unsigned char ndat=0;
if(channel==0)channel=2;
if(channel==1)channel=3;
ADDI=1;
_nop_();
_nop_();
ADCS=0;//拉低CS端
_nop_();
_nop_();
ADCLK=1;//拉高CLK端
_nop_();
_nop_();
ADCLK=0;//拉低CLK端,形成下降沿1
_nop_();
_nop_();
ADCLK=1;//拉高CLK端
ADDI=channel&0x1;
_nop_();
_nop_();
ADCLK=0;//拉低CLK端,形成下降沿2
_nop_();
_nop_();
ADCLK=1;//拉高CLK端
ADDI=(channel>>1)&0x1;
_nop_();
_nop_();
ADCLK=0;//拉低CLK端,形成下降沿3
ADDI=1;//控制命令結束
_nop_();
_nop_();
dat=0;
for(i=0;i<8;i++)
{
dat|=ADDO;//收數據
ADCLK=1;
_nop_();
_nop_();
ADCLK=0;//形成一次時鐘脈沖
_nop_();
_nop_();
dat<<=1;
if(i==7)dat|=ADDO;
}
for(i=0;i<8;i++)
{
j=0;
j=j|ADDO;//收數據
ADCLK=1;
_nop_();
_nop_();
ADCLK=0;//形成一次時鐘脈沖
_nop_();
_nop_();
j=j<<7;
ndat=ndat|j;
if(i<7)ndat>>=1;
}
ADCS=1;//拉低CS端
ADCLK=0;//拉低CLK端
ADDO=1;//拉高數據端,回到初始狀態
dat<<=8;
dat|=ndat;
return(dat); //return ad k
}

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