电梯模拟单片机源程序 -

#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar code Table_of_Digits[]=
{0x00,0x3e,0x41,0x41,0x41,0x3e,0x00,0x00, //0
0x00,0x00,0x00,0x21,0x7f,0x01,0x00,0x00, //1
0x00,0x27,0x45,0x45,0x45,0x39,0x00,0x00, //2
0x00,0x22,0x49,0x49,0x49,0x36,0x00,0x00, //3
0x00,0x0c,0x14,0x24,0x7f,0x04,0x00,0x00, //4
0x00,0x72,0x51,0x51,0x51,0x4e,0x00,0x00, //5
0x00,0x3e,0x49,0x49,0x49,0x26,0x00,0x00, //6
0x00,0x40,0x40,0x40,0x4f,0x70,0x00,0x00, //7
0x00,0x36,0x49,0x49,0x49,0x36,0x00,0x00, //8
};
uchar i=0,t=0,j=0,a=0; //i扫t延
char offset=0;
static int Current_floor=0,Pressed_key_up=0,Pressed_key_down=0,b=0,c=0,max=0,min=0; //Current_floor当前楼层Pressed_key_up（down）上（下）升要求
int flag;
int floor_up[8]={9,9,9,9,9,9,9,9};
int floor_down[8]={0,0,0,0,0,0,0,0}; //上下降请求存放数组
sbit KEY1=P1^0; //定义P1口按键
sbit KEY2=P1^1;
sbit KEY3=P1^2;
sbit KEY4=P1^3;
sbit KEY5=P1^4;
sbit KEY6=P1^5;
sbit KEY7=P1^6;
sbit KEY8=P1^7;
sbit LED=P3^7; //定义LED跟蜂鸣器
sbit SPEAK=P3^6;
void Key_up_comparison(); //把floor_up[]按从小到大排列
void Key_down_comparison(); //把floor_down[]按从大到小排列
void max_min_comparison(); //比较出floor_up[]的最大值（max)和floor_down[]的最小值（min）
//主函数
void main()
{
P2=0x80; //初始化
LED=0;
SPEAK=0;
TMOD=0x01; //T0方式
TH0=(-6000)/256; //6ms定时
TL0=(-6000)%256;
IT0=1;
IE=0x83;
TR0=1;
ET0=1;
Pressed_key_up=floor_up[0];
while(1) //循环排列
{
Key_up_comparison();
Key_down_comparison();
max_min_comparison();
}
}
void LED_Screen_Display() interrupt 1 //进入中断,显示楼层
{
TH0=(-6000)/256; //6ms
TL0=(-6000)%256;
P0=0xff;
Pressed_key_up=floor_up[0];
Pressed_key_down=floor_down[0];
if(flag==1) //上升标志
{
if(Pressed_key_up!=9) //有上升请求
{
if(Pressed_key_up>Current_floor) //点阵平滑上升显示
{
P0=~Table_of_Digits[Current_floor*8+i];
P2=_crol_(P2,1);
if(++i==8)
{ i=0; P2=0x80; }
if(++t==250) //延迟
{ t=0;
++Current_floor;}
}
}
else if(Pressed_key_up<Current_floor);
else if(Pressed_key_up==Current_floor) //到达请求楼层
{
P0=~Table_of_Digits[Current_floor*8+i];
P2=_crol_(P2,1);
if(++i==8)
{i=0; P2=0x80; }
LED=~LED;
SPEAK=~SPEAK; //蜂鸣器响，LED闪烁
if(++t==250)
{
t=0;
if(Current_floor==Pressed_key_up)
{ Current_floor=Pressed_key_up;
if(Current_floor==max)
{ flag=0; }
floor_up[0]=9;
}
}
}
}
else if(Pressed_key_up==9) //无请求，扫描显示当前楼层
{
P0=~Table_of_Digits[Current_floor*8+i];
P2=_crol_(P2,1);
if(++i==8)
{
i=0;
P2=0x80;
}
if(++t==250)
t=0;
}
}
else if(flag==0) //下降标志
{
if(Pressed_key_down!=0) //有下降请求
{
if(Pressed_key_down>Current_floor);
else if(Pressed_key_down<Current_floor)
//点阵平滑下降显示
{
P0=~Table_of_Digits[Current_floor*8+i];
P2=_crol_(P2,1);
if(++i==8)
{
i=0;
P2=0x80;
}
if(++t==250)
{
t=0;
if (++offset==8)
{
offset = 0;
--Current_floor;
}
}
}
else if(Pressed_key_down==Current_floor) //到达请求楼层
{
P0=~Table_of_Digits[Current_floor*8+i];
P2=_crol_(P2,1);
if(++i==8)
{
i=0;
P2=0x80;
}
LED=~LED;SPEAK=~SPEAK; //蜂鸣器响，LED闪烁
if(++t==250)
{t=0;
if(Current_floor==Pressed_key_down)
{
Current_floor=Pressed_key_down;
if(Current_floor==min)
{flag=1;}
floor_down[0]=0;
}
}
}
}
else if(Pressed_key_down==0) //无请求，扫描显示当前楼层
{
P0=~Table_of_Digits[Current_floor*8+i];
P2=_crol_(P2,1);
if(++i==8)
{
i=0;
P2=0x80;
}
if(++t==250)
t=0;
}
}
void Key_detection() interrupt 0 //按下按键，进入外部中断，将上升请求跟下降请求放入数组，并判断标志flag
{
P0=0xff;
P2=0x80;
i=0; //防抖
if(KEY1==0) j=1;
else if(KEY2==0) j=2; //判断请求
else if(KEY3==0) j=3;
else if(KEY4==0) j=4;
else if(KEY5==0) j=5;
else if(KEY6==0) j=6;
else if(KEY7==0) j=7;
else if(KEY8==0) j=8;
if(j>Current_floor) //将上升请求放入数组
{
if(floor_down[0]==0)
flag=1;
floor_up[b++]=j;
if(b==8)
b=0;
}
else if(j<Current_floor) //将下降请求放入数组
{
if(floor_up[0]==9)
flag=0;
floor_down[c++]=j;
if(c==8)
c=0;
}
else if(j==Current_floor);
}
void Key_up_comparison() //把floor_up[]按从小到大排列
{
int a1,a2,a3=0;
for(a2=0;a2<7;a2++)
{
for(a1=0;a1<7;++a1)
{
if(floor_up[a1]>floor_up[a1+1])
{
a3=floor_up[a1];
floor_up[a1]=floor_up[a1+1];
floor_up[a1+1]=a3;
}
if(floor_up[a1]==floor_up[a1+1])
floor_up[a1+1]=9;
}
}
}
void Key_down_comparison() //把floor_down[]按从大到小排列
{
int a1,a2,a3=0;
for(a2=0;a2<7;a2++)
{
for(a1=0;a1<7;++a1)
{
if(floor_down[a1]<floor_down[a1+1])
{
a3=floor_down[a1];
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