(求助)程序详解图
#include <reg51.H> unsigned char code dispbit[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; //位码 unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66, 0x3F,/*0*/ 0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x40}; unsigned char dispbuf[8]={0,0,0,0,0,0,10,10}; unsigned char temp[8]; unsigned char dispcount; unsigned char T0count; unsigned char timecount; bit flag; unsigned long x;
void main(void) //主函数 { unsigned char i; TMOD=0x15; //T0T1方式1,T0计数 TH0=0; TL0=0; TH1=(65536-4000)/256; TL1=(65536-4000)%256; TR1=1; //启动定时器1 TR0=1; //启动定时器0 ET0=1; //允许定时器0中断 ET1=1; //允许定时器1中断 EA=1; //启动总中断 while(1) { if(flag==1) { flag=0; x=T0count*65536+TH0*256+TL0; for(i=0;i<8;i++) { temp=0; } i=0; while(x/10) { temp=x%10; x=x/10; i++; } temp=x; for(i=0;i<6;i++) { dispbuf=temp; } timecount=0; T0count=0; TH0=0; TL0=0; TR0=1; } } }
void t0(void) interrupt 1 using 0 //中断1次计数值为65536 { T0count++; } void t1(void) interrupt 3 using 0 //每4ms中断1次 { TH1=(65536-4000)/256; TL1=(65536-4000)%256; timecount++; //中断250次即1s采集一次数据 if(timecount==250) { TR0=0; timecount=0; flag=1; } //中断250次即1s采集一次数据 P0=dispcode[dispbuf[dispcount]]; //P0口段输出 P2=dispbit[dispcount]; //P2口位输出 dispcount++; if(dispcount==8) { dispcount=0; } }
小弟初学单片机C,很多都不懂,哪位大哥大姐能帮我分析一下这个程序,写出其流程图
下面是图
[此贴子已经被作者于2008-8-18 15:13:35编辑过]
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