750juan.c

一种750型全自动电子设备的程序案例。用C语言开发的小程序

#include <reg51.h>
#include <stdio.h>
//signal point on input
sbit left_light=P1^0;
sbit right_light=P1^1;
sbit free=P1^2;
sbit sendpaper1_1=P1^3;
sbit sendpaper1_2=P1^4;
sbit sendpaper2_1=P1^5;
sbit sendpaper2_2=P1^6; 
sbit sendpaper3_1=P1^7;
sbit sendpaper3_2=P0^0;
sbit sendpaper4_1=P0^1;
sbit sendpaper4_2=P0^2;
//output...
sbit toplc=P3^2;
sbit left_scissors=P3^3;
sbit right_scissors=P3^4;
sbit freepaper1=P3^5;
sbit freepaper2=P3^6;
sbit freepaper3=P3^7;
sbit freepaper4=P2^7;
unsigned char left_mark=0,left_time=20,right_mark=0,right_time=20;
void timer0()interrupt 1{//5ms delay
TH0=0xef;
TL0=0xb3;
if(left_mark==1&&left_time!=0){
left_time--;
if(left_time==0)
left_scissors=0;
}
if(right_mark==1&&right_time!=0){
right_time--;
if(right_time==0)
right_scissors=0;
}
}
void main(){
P2=0x00;//程序初始化//
P3=0x00;
P0=0x00;
P1=0x00;
IE=0x8a;
TMOD=0x11;
TR0=1;
TH0=0xef;
TL0=0xb3;
while(1){
if(left_light==1&&left_mark==0&&free==0){
left_scissors=1;
left_mark=1;
}
if(right_light==1&&right_mark==0&&free==0){
right_scissors=1;
right_mark=1;
}
if(free==1){
left_scissors=0;
right_scissors=0;
left_mark=0;
right_mark=0;
left_time=20;
right_time=20;
}
if(sendpaper1_1==1)
freepaper1=1;
if(sendpaper1_2==1)
freepaper1=0;
if(sendpaper2_1==1)
freepaper2=1;
if(sendpaper2_2==1)
freepaper2=0;
if(sendpaper3_1==1)
freepaper3=1;
if(sendpaper3_2==1)
freepaper3=0;
if(sendpaper4_1==1)
freepaper4=1;
if(sendpaper4_2==1)
freepaper4=0;
}
}