Elevator control program based on single chip microcomputer-EEWORLD

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#include //Include header file, generally no need to change,

//Header file contains the definition of special function registers

sbit SCL=P2^0;

sbit SDA=P2^1;

sbit led=P2^2;

sbit led1=P1^5;

sbit tz=P2^3; //Stop button

sbit lc1=P2^4; //One floor button

sbit lc2=P2^5; //Second floor button

sbit lc3=P2^6; //3rd floor button

sbit lc4=P2^7; //Fourth floor button

sbit mb=P0^0; //Door insurance sensor processing

sbit dw1=P0^1; //Processing of one floor in place

sbit dw2x=P0^2; //Processing of one floor in place

sbit dw2s=P0^3; //Processing of one floor in place

sbit dw3x=P0^4; // One floor in place

sbit dw3s=P0^5; //Processing of one floor in place

sbit dw4=P0^6; //Processing of one floor in place

sbit jd1=P3^5; // Stop the main power supply normally closed relay

sbit jd2=P3^6; //Rising relay

sbit jd3=P3^7; //Down relay

bit fg,fg1,fg2; //bit processing

bit sb,jb; // rising flag bit falling flag bit

bit dw2,dw3; //Second and third floors in place

bit lch12; // Flag between floors 1 and 2

bit lch23; // Flag between floors 2 and 3

bit lch34; // Flag between floors 3 and 4

unsigned char num,num1,num2;

unsigned char jylc; // Memory layer number variable

void Delay(unsigned int t); //Function declaration

void Init_Timer0(void);

/*------------------------------------------------

Main function

------------------------------------------------*/

void main (void)

{

char i,a;

char lch,lch1; //Floor number variable,lch1 is used when the digital tube scans only once

SDA=0;

lch=2; fg=1;

Delay(60);

if(dw1==0)

{ lch=1;fg=1;lc1=1; }

if(dw2x==0||dw2s==0)

{ lch=2;fg=1;lc2=1;}

if(dw3x==0||dw3s==0)

{ lch=3;fg=1;lc3=1;}

if(dw4==0)

{ lch=4;fg=1;lc4=1; }

Init_Timer0(); //Timer initialization

while (1) //main loop

{

if(lc1==1&&lc2==1&&lc3==1&&lc4==1)

a=1;

if(lc1==0&&a==1&&dw1!=0) //Floor selection

{ a=0;jylc=1;lc1=0; }

if(lc2==0&&a==1&&dw2!=0)

{ a=0;jylc=2;lc2=0; }

if(lc3==0&&a==1&&dw3!=0)

{ a=0;jylc=3;lc3=0; }

if(lc4==0&&a==1&&dw4!=0)

{ a=0;jylc=4;lc4=0; }

if(tz==0||mb==1) //Stop button pressed

{

lc1=1;lc2=1;lc3=1;lc4=1; //Floor button reset

jylc=0; //Memory floor reset

if(lch12==0&&lch23==0&&lch34==0&&(sb==1||jb==1))

{

fg1=1;

if(lch==1&&sb==1)

lch12=1;

if(lch==2&&sb==1)

lch23=1;

if(lch==2&&jb==1)

lch12=1;

if(lch==3&&sb==1)

lch34=1;

if(lch==3&&jb==1)

lch23=1;

if(lch==4&&jb==1)

lch34=1;

}

jd2=1;jd3=1; //Relay stops energizing and the elevator stops

}

[page]

if(dw1==0&&jb==1)

{ lch=1;fg=1;lc1=1; }

if((dw2x==0&&jb==1)||(sb==1&&dw2s==0))

{ lch=2;fg=1;lc2=1;dw2=0; }

else

dw2=1;

if((dw3x==0&&jb==1)||(sb==1&&dw3s==0))

{ lch=3;fg=1;lc3=1;dw3=0; }

else

dw3=1;

if(dw4==0&&sb==1)

{ lch=4;fg=1;lc4=1; }

if(dw1==0||dw2==0||dw3==0||dw4==0)

{ fg1=0;lch12=0;lch23=0;lch34=0; }

if(jylc!=0)

{

if(jylc>lch && fg1==0)

{ jd2=0;jd3=1; sb=1;jb=0; led=0; } //Elevator goes up

if(jylc

{ jd3=0;jd2=1; sb=0;jb=1; led=1;} //Elevator descends

if(jylc==lch && fg1==0)

{ jd2=1;jd3=1; sb=0;jb=0;lc1=1;lc2=1;lc3=1;lc4=1; } //Elevator stops

if(lch12==1)

{

if(jylc==1)

{ jd3=0;jd2=1; sb=0;jb=1; led=1; } //Elevator descends

if(jylc>=2)

{ jd2=0;jd3=1; sb=1;jb=0; led=0; } //Elevator goes up

}

if(lch23==1)

{

if(jylc<=2)

{ jd3=0;jd2=1; sb=0;jb=1; led=1; } //Elevator descends

if(jylc>=3)

{ jd2=0;jd3=1; sb=1;jb=0; led=0; } //Elevator goes up

}

if(lch34==1)

{

if(jylc<=3)

{ jd3=0;jd2=1; sb=0;jb=1; led=1; } //Elevator descends

if(jylc>=4)

{ jd2=0;jd3=1; sb=1;jb=0; led=0; } //Elevator goes up

}

if(lch!=lch1||fg2==1)

{

fg2=0;

switch(lch)

{

case 1:

{

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

{

SCL=0;

Delay(1);

if(i==0||i==7)

SDA=1;

else

SDA=0;

SCL=1;

Delay(1);

}

} break;

case 2:

{

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

{

SCL=0;

Delay(1);

if(i==2||i==7)

SDA=0;

else

SDA=1;

SCL=1;

Delay(1);

}

} break;

case 3:

{

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

{

SCL=0;

Delay(1);

if(i==2||i==4)

SDA=0;

else

SDA=1;

SCL=1;

Delay(1);

}

} break;

case 4:

{

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

{

SCL=0;

Delay(1);

if(i==1||i==5||i==4)

SDA=0;

else

SDA=1;

SCL=1;

Delay(1);

}

} break;

}

lch1=lch;

}

/*------------------------------------------------

Delay function, with input parameter unsigned int t, no return value

unsigned int is used to define an unsigned integer variable, whose value range is

0~65535

------------------------------------------------*/

void Delay(unsigned int t)

{

while(--t);

}

/*------------------------------------------------

Timer initialization subroutine

------------------------------------------------*/

void Init_Timer0(void)

{

TMOD |= 0x01; //Use mode 1, 16-bit timer, use the "|" symbol to avoid being affected when using multiple timers

//TH0=0x00; //Give initial value

//TL0=0x00;

EA=1; //General interrupt is turned on

ET0=1; //Timer interrupt is turned on

TR0=1; //Timer switch is turned on

}

/*------------------------------------------------

Timer interrupt subroutine

------------------------------------------------*/

void Timer0_isr(void) interrupt 1

{

TH0=(65536-5000)/256; //Reassign 5ms

TL0=(65536-5000)%256;

num++;

if(num<20)

{

led1=0;

if(jd2==1&&jd3==1&&mb==0)

led=0;

}

else

{

led1=1;

if(jd2==1&&jd3==1&&mb==0)

led=1;

}

if(mb==1)

{

if(num%10==0)

led=~led;

if(num==200)

led=1;

}

if(num==200)

{

num=0;

num2++;

if(num2==60)

{ num2=0;fg2=1; }

if(tz==0) // Long press the stop button to turn off the main power

num1++;

else

num1=0;

if(num1>2)

jd1=0;

}

Reference address：Elevator control program based on single chip microcomputer

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