case 2: //東西向黃燈開始閃爍，綠燈關閉

if(++Time_Count!=8) return;

Time_Count=0;

YELLOW_A=~YELLOW_A;GREEN_A=0;

if(++Flash_Count!=10) return; //閃爍

Flash_Count=0;

Operation_Type=3;

break;

case 3: //東西向紅燈與南北向綠燈亮 5s

RED_A=1;YELLOW_A=0;GREEN_A=0;

RED_B=0;YELLOW_B=0;GREEN_B=1;

if(++Time_Count!=100) return; //5s（100*50ms）切換

Time_Count=0;

Operation_Type=4;

break;

case 4: //南北向黃燈開始閃爍，綠燈關閉

if(++Time_Count!=8) return;

Time_Count=0;

YELLOW_B=~YELLOW_B;GREEN_A=0;

if(++Flash_Count!=10) return; //閃爍

Flash_Count=0;

Operation_Type=1;

break;

}

}

//主程序

void main()

{

TMOD=0x01; //T0 方式 1

IE=0x82;

TR0=1;

while(1);

}