仿真的时候led灯不亮，如何修改

Question

#include #define uchar unsigned char #define uint unsigned intuchar code DSY_CODE[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //数码管真值表 uchar code DSY_CODE1[]={0XBF,0x86,0xDB,0xCF,0xE6,0xED,0xFD,0x87,0xEF,0xDF};sbit CLK=P2^4;sbit ST=P2^5; sbit ECO=P2^6; sbit OE=P2^7; sbit LED=P3^4; float d; //读取的转换数值 void DelayMs(uint ms) //延时函数 { uchar i; while(ms--) for(i=0;i<120;i++); } void Disp_result(d) //数码管显示函数 { d=(d/255.000)*5000; P2=0xfe; //11111110 P0=DSY_CODE1[d/1000]; DelayMs(5); P2=0xfd; //11111101 P0=DSY_CODE[(d/100)%10]; DelayMs(5); P2=0xfb; //11111011 P0=DSY_CODE[(d/10)%10]; DelayMs(5); P2=0xf7; //11110111 P0=DSY_CODE[d%10]; DelayMs(5); if(d>3210) LED=0; else LED=1; } void main() //主函数 { TMOD=0x02; TH0=0x14; TL0=0x00; IE = 0X82; TR0 = 1; P3=0x3f; LED=1; while(1) //主循环 { ST=0; ST=1; ST=0; while(ECO==0); OE=1; Disp_result(P1); OE=0; } } void Timer0_INT() interrupt 1 //定时器中断服务函数 { CLK=~CLK; }