求单片机温度PID控制的程序(2)

}

if (high_time<100)

high_time=(unsigned char)(rout/10000);

else

high_time=0;

low_time= (100-high_time);

}

}

//else

// {}

}

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

T0中断服务子程序，用于控制电平的翻转 ,40us*100=4ms周期

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

void serve_T0() interrupt 1 using 1

{

if(++count<=(high_time))

output=1;

else if(count<=100)

{

output=0;

}

else

count=0;

TH0=0x2f;

TL0=0xe0;

}

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

串行口中断服务程序，用于上位机通讯

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

void serve_sio() interrupt 4 using 2

{

/* EA=0;

RI=0;

i=SBUF;

if(i==2)

{

while(RI==0){}

RI=0;

set_temper=SBUF;

SBUF=0x02;

while(TI==0){}

TI=0;

}

else if(i==3)

{

TI=0;

SBUF=temper;

while(TI==0){}

TI=0;

}

EA=1; */

}

void disp_1(unsigned char disp_num1[6])

{

unsigned char n,a,m;

for(n=0;n<6;n++)

{

//k=disp_num1[n];

for(a=0;a<8;a++)

{

clk=0;

m=(disp_num1[n]&1);

disp_num1[n]=disp_num1[n]>>1;

if(m==1)

data1=1;

else

data1=0;

_nop_();

clk=1;

_nop_();

}

}

}

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

显示子程序

功能：将占空比温度转换为单个字节，显示信噪比和测得到的频率

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

void display()

{

unsigned char code number[]={0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xf6};

unsigned char disp_num[6];

unsigned int k,k1;

k=high_time;

k=k00;

k1=k/100;

if(k1==0)

disp_num[0]=0;

else

disp_num[0]=0x60;

k=k0;

disp_num[1]=number[k/10];

disp_num[2]=number[k];

k=temper;

k=k0;

disp_num[3]=number[k/10];

disp_num[4]=number[k]+1;

disp_num[5]=number[s/10];

disp_1(disp_num);

}

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

主程序

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

main()

{

unsigned char z;

unsigned char a,b,flag_2=1,count1=0;

unsigned char phil[]={2,0xce,0x6e,0x60,0x1c,2};;

TMOD=0x21;

TH0=0x2f;

TL0=0x40;

SCON=0x50;

PCON=0x00;

TH1=0xfd;

TL1=0xfd;

PS=1;

EA=1;

EX1=0;

ET0=1;

ES=1;

TR0=1;

TR1=1;

high_time=50;

low_time=50;

PIDInit ( &spid ); // Initialize Structure

spid.Proportion = 10; // Set PID Coefficients

spid.Integral = 8;

spid.Derivative =6;

spid.SetPoint = 100; // Set PID Setpoint

while(1)

{

if(plus==0)

{

EA=0;

for(a=0;a<5;a++)

for(b=0;b<102;b++){}

if(plus==0)

{

set_temper++;

flag=0;

}

}

else if(subs==0)

{

for(a=0;a<5;a++)

for(b=0;a<102;b++){}

if(subs==0)

{

set_temper--;

flag=0;

}

}

else if(stop==0)

{

for(a=0;a<5;a++)

for(b=0;b<102;b++){}

if(stop==0)

{

flag=0;

break;

}

EA=1;

}

get_temper();

b=temper;

if(flag_2==1)

a=b;

if((abs(a-b))>5)

temper=a;

else

temper=b;

a=temper;

flag_2=0;

if(++count1>30)

{

display();

count1=0;

}

compare_temper();

}

TR0=0;

z=1;

while(1)

{

EA=0;

if(stop==0)

{

for(a=0;a<5;a++)

for(b=0;b<102;b++){}

if(stop==0)

disp_1(phil);

// break;

}

EA=1;

}

}

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