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#define _MAIN_C
#include "use.h"
#include "main.h"
#include "time.h"
#include "key.h"
bit flag1s;
uchar count1s,NS_time,WE_time;
uchar GreenTime=30,RedTime=35;
uchar index=0;
enum eStaSysterm StaSysterm=NormalRun;
void main()
{
EA=1; //开总中断
InintTimer0(); //初始化定时器0
while(1)
{
LEDScan(); //数码管即LED扫描
KeyDriver(); //键盘驱动扫描
if(flag1s)
{
flag1s=0;
NS_time--; //红绿灯倒计时时间减
WE_time--;
}
}
}
void InintTimer0()
{
TMOD=0X01;
TH0=0X4C;
TL0=0X00;
ET0=1;
TR0=1;
}
void Timer0() interrupt 1
{
TH0=0XBB;
TL0=0X00;
KeyScan();
if(++count1s<50) return;
count1s=0;
if(StaSysterm==NormalRun) flag1s=1; //非正常运行时，不红绿灯数值不减一
}
void LEDScan()
{
if(StaSysterm==NormalRun) //正常运行
{
if(NS_time==0 || WE_time==0)
{
switch(index) //改变红绿灯的状态，状态机
{
case 0:
{
index=1;
NS_time=GreenTime;
WE_time=RedTime;
P2=0X09;
}break;
case 1:
{
index=2;
NS_time=RedTime-GreenTime;
P2=0X0A;
}break;
case 2:
{
index=3;
NS_time=RedTime;
WE_time=GreenTime;
P2=0X24;
}break;
case 3:
{
index=0;
WE_time=RedTime-GreenTime;
P2=0X14;
}break;
default:break;
}
}
Seg_Display(NS_time/10,0);
Seg_Display(NS_time%10,1);
Seg_Display(WE_time/10,2);
Seg_Display(WE_time%10,3);
}
else if(StaSysterm==UrgentRun)
{ //紧急情况运行
P2=0x12;
Delayms(200);
P2=0x00;
Delayms(200);
}
else //设置调整红绿灯时间
{
index=0;
NS_time=0;
WE_time=0; //重新初始化红绿灯并运行
UrgentScan();
}
}
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