STC单片机采集计算瞬时频率和总脉冲数

1、STC单片机采集计算瞬时频率和总脉冲数/*STC89C58RD+片机驱动LCD1602液晶显示脉冲数和瞬时频率？使用外部中断1和定时中断1*/ #include<STC89C58.h>#define uint unsigned int#define uchar unsigned char uchar code count="0123456789"sbit lcdrs=P4A0;sbit lcdrw=P3A6;sbit lcden=P3A7;uint num,sec,set,n; /num:计算外部中断的总个数；sec:计算瞬日t频

2、率；set,n中间变县 里/*外部中断*/ void init_tc0()(EA=1;EX0=1;ET0=1;IT0=1;TMOD=0x01;TH0=0x3c;TL0=0xaf;TR0=1;)void timer0() interrupt 0/ 外部中断(num+;);*定时中断*/void t0() interrupt 1(TH0=0x4c;TL0=0x00;set+;if(set=20)(set=0;定时中断sec=num-n;n=num;);*延时函数*;void delay(uint t)(uint x,y;for(x=t;x>0;x-)(for(y=112;y&

3、gt;0;y-)()/*LCD1602马区动*/void lcd_wite_com(uchar com)(lcdrs=0;delay(2);lcdrw=0;delay(2);P2=com;lcden=1;delay(2);lcden=0;)void lcd_wite_dat(uchar dat)(lcdrs=1;delay(2);lcdrw=0;delay(2);P2=dat;lcden=1;delay(2);lcden=0;)void lcd_int()(lcd_wite_com(0x38);lcd_wite_com(0x0f);lcd_wite_com(0x0c);/不显示光标(0x06显

4、示光标)0x0c不显示光标lcd_wite_com(0x01); / 清屏delay(4);)void display(uchar x,uchar y,uchar dat)液晶行和列显示，X:行 Y:歹U dat:要显示的数据(uchar m;if(x=1)(m=0x40;)elsem=0;m=y|m;lcd_wite_com(0x80+m);lcd_wite_dat(dat);/*显示总脉冲数 换算*/ void display_num()uchar ge,shi,bai,qian,wan;ge=num%10;shi=num%100/10;bai=num%1000/100;qian=num%

5、10000/1000;wan=num%100000/10000;display(1,8,countge);delay(1);display(1,7,countshi);delay(1);display(1,6,countbai);delay(1);display(1,5,countqian);delay(1);display(1,4,countwan);delay(1); /*显示瞬时频率 换算*/ void display_intnum()uchar ge1,shi1,bai1,qian1;ge1=sec%10;shi1=sec%100/10;bai1=sec%1000/100;qian1=sec%10000/1000;display(0,8,countge1);delay(1);display(0,7,countshi1);delay(1)；display(0,6,countbai1);delay(1);display(0,5,countqian1);delay(1);void main()P0=0;lcd_int();init_tc0();display(0,0,&