?? text2.c
字號(hào):
#include<REG52.H>
//#include<STDIO.H>
//#include<ABSACC.H>
#include <string.h>
//#include<intrins.h>
#define OSC 20000000
#define BAUDRATE 9600
//#define BUFSIZE 32
#define KP 3 //比例系數(shù)
#define KIP 3 //積分系數(shù)
#define KD 30 //微分系數(shù)
//#define KCP 10 //功率校正系數(shù)
//#define T_c 16 //采樣周期(單位:秒)
unsigned char tem[9];
char tem1,tem2,temz,e,settem;
unsigned char coms[32];//串口接受緩沖
//unsigned char xdata comf[32];//串口發(fā)送緩沖
unsigned char murt,pidtime=0,ledy=0,ledw=0,q,b,time1,ok=0,pidyn=1;
char xdata diff[20]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
int sum_diff=0;
char curr_=0,pwmj=0;
char alarm,fenshang ;
sbit pid_port=P2^0; //控制輸出端口
//float settem=0; //目標(biāo)溫度
//float temz=0; //當(dāng)前溫度
int PWM=0; //輸出控制量
//unsigned char *strin=coms; //串口指針
unsigned char xdata LED7Code[]={
0xEB, // 0
0x28, // 1
0xB3, // 2
0xBA, // 3
0x78, // 4
0xDA, // 5
0xDB, // 6
0xA8, // 7
0xFB, // 8
0xFA, // 9
0xF9, // A
0x5B, // B
0xC3, // C
0x3B, // D
0xD3, // E
0xD1, // F
0x10 , //- 16
0x80,//~ 17
0x02,//_ 18
0x12, // = 19
0x82//
};
sbit DQ =P1^2;
unsigned char led4[4]={0,0,0,0};//數(shù)碼管內(nèi)容
unsigned char stri=0,wstr=0; //串口數(shù)據(jù)位 ，記錄標(biāo)志
sbit P20=P2^0; //控制輸出端口
sbit P21=P2^1;//降溫控制信號(hào)
sbit P22=P2^2;//報(bào)警信號(hào)
sbit P23=P2^3;
sbit P24=P2^4;
sbit P25=P2^5;
sbit P26=P2^6;
//數(shù)碼管位定義
sbit P15=P1^5;
sbit P16=P1^6;
sbit P17=P1^7;
void twoto10 (char x);
void pid(void)
{
int p_out,d_out,temp;
int i_out;
int pwm_0;
temp=diff[curr_];
if(curr_>=19)curr_=0;
else curr_++;
sum_diff-=diff[curr_];
diff[curr_]=settem-temz;
sum_diff+=diff[curr_];
p_out=3*diff[curr_]; //比例項(xiàng)輸出
i_out=sum_diff/3; //積分項(xiàng)輸出
d_out=20*(diff[curr_]-temp); //微分項(xiàng)輸出
pwm_0=pwmj; //維持功率項(xiàng)
if(i_out>100) i_out=100; //積分分離
if(i_out<-100) i_out=-100;
PWM=p_out+i_out+d_out+pwm_0; //總輸出量
if(PWM<0) PWM=0;
else if(PWM>100) PWM=100;
}
// 輸出函數(shù)
void PWM_OUT(int PWMw)
{
static unsigned char t=1; //t=(1--100)周期為4秒
unsigned char limit; //pid_value輸出百分比
limit=(unsigned char)PWMw;
if(t<=limit)pid_port=1; //加熱
else pid_port=0; //停止加熱
t++;
if(t>100)t=1;
}
void send_char_com(unsigned char ch)
{
SBUF = ch;
while(TI==0);
TI = 0;
}
void send_string_com(unsigned char *string)
{
int i;
for(i=0; i<strlen(string); i++)
{
send_char_com(string[i]);
// comf[i]=string[i];
}
// comf[i]='\0';
}
void ledoutput()
{//ledy++;
//if(ledy==1)
//{
P2=P2&0x07;
P0=LED7Code[led4[ledw]];
switch(ledw)
{
case 0: P24=1;break;
case 1: P25=1;break;
case 2: P26=1;break;
case 3: P23=1;break;
}
if(ledw>3)
ledw=0;
else
ledw++;
//ledy=0;
//}
}
/*void delay()
{
unsigned char m,n,s;
for(m=20;m>0;m--)
for(n=20;n>0;n--)
for(s=20;s>0;s--);
}
*/
void int1() interrupt 2 using 1
{ b=1;
time1=0;
led4[0]=14;
while(P15==1)
{
if(b==1)
{
if(P16==0)
{ if(settem<125&&settem>=-55)
settem++;
b=0;
time1=0;
}
if(P17==0)
{ if(settem<=125&&settem>-55)
settem--;
b=0;
time1=0;
}
}
if(time1>=7)
{
b=1;
time1=0;
}
twoto10(settem);
ledy++;
if (ledy>=80)
{ledoutput() ;
ledy=0;
}
}
led4[0]=0;
}
void ComISR(void) interrupt 4 using 2
{
if(RI)
{
RI=0;
if(SBUF =='$'&&wstr==0)
{
stri=0;
wstr=1;
}
if(wstr==1)
{
coms[stri++]=SBUF;
if(SBUF =='~')
{wstr=0;
coms[stri]='\0';
if((!memcmp(coms, "$S+", 3))&& coms[4]=='~')
{settem=coms[3];
ok=1;
memset(coms,0,32);
}
if(!memcmp(coms, "$HERE", 5)&&coms[7]=='~')
{murt=1;
pidyn=coms[6];
if (pidyn==0)
PWM=coms[5];
memset(coms,0,32);
}
/* if(!memcmp(coms, "$PID", 4)&&coms[5]=="~")
{pidyn=coms[4];
memset(coms,0,32);
}
*/
}
}
}
}
//初始化函數(shù)
Init_DS18B20(void)
{
unsigned char x=0;
DQ = 1; //DQ復(fù)位
for(b=3;b>0;b--);
DQ = 0; //單片機(jī)將DQ拉低
for(b=208;b>0;b--);
for(b=208;b>0;b--);
DQ = 1; //拉高總線
for(b=83;b>0;b--);
x=DQ; //稍做延時(shí)后 如果x=0則初始化成功 x=1則初始化失敗
for(b=120;b>0;b--);
}
//讀一個(gè)字節(jié)
ReadOneChar(void)
{
unsigned char i=0;
unsigned char dat = 0;
for (i=8;i>0;i--)
{
DQ = 0; // 給脈沖信號(hào)
dat>>=1;
DQ = 1;
for(b=3;b>0;b--);
if(DQ==1)
dat|=0x80;
for(b=30;b>0;b--);
}
return(dat);
}
//寫(xiě)一個(gè)字節(jié)
WriteOneChar(unsigned char dat)
{
unsigned char i=0;
for (i=8; i>0; i--)
{
DQ = 0;
for(b=2;b>0;b--);
DQ = dat&0x01;
for(b=38;b>0;b--);
DQ = 1;
dat>>=1;
}
}
//讀取溫度
ReadTemperature(void)
{
//unsigned char i;
//float tt=0;
Init_DS18B20();
WriteOneChar(0xCC); // 跳過(guò)讀序號(hào)列號(hào)的操作
WriteOneChar(0x44); // 啟動(dòng)溫度轉(zhuǎn)換
Init_DS18B20();
WriteOneChar(0xCC); //跳過(guò)讀序號(hào)列號(hào)的操作
WriteOneChar(0xBE); //讀取溫度寄存器等（共可讀9個(gè)寄存器） 前兩個(gè)就是溫度
//for(i=8;i>=0;i++)
tem[8]=ReadOneChar();
tem[7]=ReadOneChar();
//t=b;
//t<<=8;
//t=t|a;
//tt=t*0.0625; //將溫度的高位與低位合并
//t= tt*10+0.5; //對(duì)結(jié)果進(jìn)行4舍5入
}
void twoto10 (unsigned char x)
{
if (x>127)
{led4[1]=16;
x= ~(x-1);
}
else
led4[1]=x/100;
led4[2]=(x/10)%10;
led4[3]= x%10;
}
void t0() interrupt 1 using 0
{
ReadTemperature();
tem1=tem[8]>>4;
tem2=tem[7]<<4;
temz=tem1|tem2;
if (pidyn==1)
{
pid();
if(pidtime>=100)
{
if(tem[6]>=temz)
pwmj++;
tem[6]=temz;
pidtime=0;
}
}
if (temz>settem)
{pwmj=0;
}
PWM_OUT(PWM) ;
q++;
time1++;
pidtime++;
}
void main()
{
//unsigned char ii;
PT0=1;
TMOD=0x01;
TH0=0x00;
TL0=0x00;
EA=1;
ET0=1;
EX1=1;
ES=1;
TR0=1;
IT1=1;
SCON = 0x50; // 串口模式1，允許接收
PCON = 0x80;
T2CON = 0x30; // RCLK=TCLK=1
RCAP2H = (65536 - OSC/32/BAUDRATE)/256;
RCAP2L = (65536 - OSC/32/BAUDRATE)%256;
TH2 = (65536 - OSC/32/BAUDRATE)/256;
TL2 = (65536 - OSC/32/BAUDRATE)%256;
TR2 = 1;
TI = 0;
RI = 0;
while(1)
{
ledy++;
if (ledy>=70)
{ledoutput();
ledy=0;
}
if (ok==1)
{
send_char_com(0x24);
send_string_com("OK~") ;
ok=0;
}
if(murt==1)
{
send_char_com(0x54);
send_char_com(0x01);
send_char_com(tem[7]);
send_char_com(tem[8]);
send_char_com(0x7c);
send_char_com(settem);
send_char_com(0x7e);
murt=0;
}
/*if(temz<=128) //e(t)=設(shè)置溫度-檢測(cè)溫度
tem2=settem+(~temz)+1 ; //tem>=0 [-temz]補(bǔ)=~temz+1
else
tem2=settem+tem1; //tem<0 [-temz]補(bǔ)=~(tem1-1)
*/
//e=settem-temz ;
if(q<60)
{
twoto10(temz);
//if (e==0)
led4[0]=0;
//else
// if (e>0)
//led4[0]=18;
// else
// led4[0]=17;
}
else
{
led4[0]=12;
twoto10(PWM) ;
}
if(q>120)
q=0;
if (temz>settem+10)
{P22=1; }
else
{
P22=0;
}
if (temz>settem+5)
{
P21=1;
}
else
{
P21=0;
}
}
}
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