请帮忙解释一下这个事什么意思。
程序代码:
#include<reg51.h> #define SEG 17 //每帧图片分成17列里显示 #define INteRVAL 20 //每幅图片在左右摇摆20次后换下一幅 typedef unsigned char uchar; typedef unsigned int uint; code char pattern[17][3]= {//3幅图片的字模 {0xff,0xff,0xff}, {0xff,0xff,0xff}, {0xff,0xff,0xff}, {0xff,0x9f,0xff}, {0xff,0x6f,0xf9}, {0xff,0x77,0x65}, {0xfe,0xbb,0x1e}, {0x7e,0xdd,0xfe}, {0x00,0xee,0xfe}, {0x7e,0xdd,0xfe}, {0xfe,0xbb,0x1e}, {0xff,0x77,0x65}, {0xff,0x6f,0xf9}, {0xff,0x9f,0xff}, {0xff,0xff,0xff}, {0xff,0xff,0xff}, {0xff,0xff,0xff}, }; uchar phase,th1,tl1,index,count; main() { EA=0; EX0=1; ET1=1; PX0=1; IT0=1; TMOD=0x11; index=0; EA=1; while(1) { } } void Int0_Handle(void) interrupt 0 using 1 { uint t0_time; TR0=0; TR1=0; TF1=0; t0_time=TH0<<8|TL0; TL0=0; TH0=0; TR0=1; t0_time=65535-t0_time/SEG; th1=t0_timr/256; TH1=th1; tl1=t0; if (count<3*INTERVAL) {//三幅图片循环 count++; } else count=0; index=count/INTERVAL; if (th1!=0xff || tl1!=0xff) //如果摆动特别慢,定时器溢出就不显示 { phase=0; tr1=1; } else TR1=1; } void Timer1(void) interrupt 3 using 3 { if (phase<SEG) //17段依次显示 { p1=pattern[phase][index]; phase++; TH1=th1; TL1=tl1l } }这是替一个同学问的,他说他是要做什么电具的LED灯,我也不清楚。最后能解释每一句的意思。。。