pinlvji.zip_数字频率计

#include <reg52.H> //********数码管位代码表(P2口)**********// unsigned char code dispbit[]={0x01,0x02,0x04,0x08}; //********数码管段代码表(P0口，共阴且高位接dp，低位接a笔段)**********// unsigned char code dispcode[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F}; //********6位数据缓冲器**********// unsigned char dispbuf[8]; unsigned char temp[8]; unsigned char dispcount; unsigned char T0count; unsigned char timecount; void initial(); void dataDisplay(); bit flag; sbit Fin=P3^4; sbit key=P3^7; unsigned long x,freq; void delay(unsigned int cnt)//延时 { while(--cnt); } //*********初始化模块**********// void initial(void){ P0=0; P2=0; TMOD=0x15; TH0=0; TL0=0; TH1=(65536-4000)/256; TL1=(65536-4000)%256; TR1=1; TR0=1; ET0=1; ET1=1; EA=1; } //*********显示模块**********// void dataDisplay(){ unsigned char i; for(i=0;i<4;i++){ temp[i]=0; } i=0; while(x/10){ temp[i]=x%10; x=x/10; i++; } P0=temp[0]; P2=0; delay(300); P0=temp[1]; P2=1; delay(300); P0=temp[2]; P2=2; delay(300); P0=temp[3]; P2=3; delay(300); //temp[i]=x; /*for(i=0;i<4;i++){ dispbuf[i]=temp[i]; } for(dispcount=0; dispcount<4; dispcount++) { P0=dispcode[dispbuf[dispcount]]; P2=dispbit[dispcount]; delay(); }*/ } //******************************************************// /**************************延时函数************************************/ //******************************************************// //*********定时中断服务程序1**********// void t1(void) interrupt 3 using 0{ TH1=(65536-4000)/256; TL1=(65536-4000)%256; timecount++; freq=T0count*65536+TH0*256+TL0; while(timecount==250) {TR0=0;TR1=0; } } //******************************************************// //*********定时中断服务程序2**********// void t0(void) interrupt 1 using 0 { T0count++; } //******************************************************// //*********主函数**********// void main(void){ while(1){ if(key==1) { timecount=0; T0count =0; initial(); } else { x=freq; x=x*20; dataDisplay(); } } }