shiboqi.rar_shiboqi_单片机 示波器_数字示波器

#include <reg52.h> //示波器 #include <intrins.h> #include "LIB.h" #define uchar unsigned char #define uint unsigned int #define command 0 #define dat 1 #define Disp_On 0x3f //定义管脚的指令值 #define Disp_Off 0x3e #define coloum 0x40 //从第一列开始显示 #define page 0xb8 //从第一页开始显示 #define startline 0xc0 //从第一行开始显示 uchar fre[3]; uchar m=0; uint frequency; uchar max,min,p_p; uchar pp[2]; uchar shuju[64]; //用于存放一组扫描数据 sbit E=P2^0; sbit RW=P2^1; sbit RS=P2^2; sbit CS2=P2^3; sbit CS1=P2^4; sbit RST=P2^5; sbit W=P2^6; sbit R=P2^7; sbit flag=P3^2; sbit start=P3^0; sbit ret=P3^1; void lcd_delay(uchar i); void lcd_initial(); void lcd_send(uchar da_co,uchar i); void lcd_write(uchar x,uchar y,uchar a); //在x页，y列开始写入数据 void lcd_char(uchar x,uchar y,uchar code *hanzi); //在指定位置上写入一个汉字 void lcd_number(uchar x,uchar y,uchar code *shuzi); //在指定位置上写入一个数字 void lcd_zimu(uchar x,uchar y,uchar code *zimu); //在指定位置上写入一个字母 void lcd_display(); //在液晶上显示波形 void sample(); //ADC0804采样函数 void clear(); //清楚上次的点 void clear_screen(); //清屏，实际电路去掉此函数 void delay(uchar i); void max_min(); //计算波形的峰峰值 void biankuang(); void t0(); void t1(); void fre_display(); //频率显示 void lcd_delay(uchar i) { while(--i); } void delay(uchar i) { uchar a,b; for(a=0;a<i;a++) for(b=0;b<125;b++) {;} } void lcd_initial() { RST=0; lcd_delay(70); RST=1; CS1=1; CS2=1; _nop_(); lcd_send(command,Disp_Off); lcd_send(command,Disp_On); } void lcd_send(uchar da_co,uchar i) { RW=0; RS=da_co; P0=i; E=1; ; E=0; _nop_(); } void lcd_write(uchar x,uchar y,uchar a) //在指定位置上写入一个字节的数据 { lcd_send(command,page+x); lcd_send(command,coloum+y); lcd_send(dat,a); } void lcd_char(uchar x,uchar y,uchar code *hanzi) { uchar i,j; for(i=0;i<2;i++) { lcd_send(command,page+x+i); lcd_send(command,coloum+y); for(j=0;j<16;j++) {lcd_send(dat,hanzi[16*i+j]); //自摸共有32个字节 } } } void lcd_number(uchar x,uchar y,uchar code *shuzi) { uchar i,j; for(i=0;i<2;i++) {lcd_send(command,page+x+i); lcd_send(command,coloum+y); for(j=0;j<8;j++) lcd_send(dat,shuzi[8*i+j]); } } void lcd_zimu(uchar x,uchar y,uchar code *zimu) { uchar i,j; for(i=0;i<2;i++) {lcd_send(command,page+x+i); lcd_send(command,coloum+y); for(j=0;j<10;j++) lcd_send(dat,zimu[10*i+j]); } } void sample() { uint i,value; uchar j; for(j=0;j<64;j++) { R=1;W=1; W=0; W=1; lcd_delay(60); //145us R=0; i=P1; _nop_(); R=1; //读数完毕 value=i*235/1000; shuju[j]=value; } } void lcd_display() { uchar i,x; uchar j; for(i=0;i<64;i++) //取出一个采样数据 { j=shuju[i]; if(j>55) x=0; else if(j>47) x=1; else if(j>39) x=2; else if(j>31) x=3; else if(j>23) x=4; else if(j>15) x=5; else if(j>7) x=6; else x=7; lcd_write(x,i,da[j]); } } void clear() { uchar i,x; uchar j; for(i=0;i<64;i++) //取出一个采样数据 { j=shuju[i]; if(j>55) x=0; else if(j>47) x=1; else if(j>39) x=2; else if(j>31) x=3; else if(j>23) x=4; else if(j>15) x=5; else if(j>7) x=6; else x=7; lcd_write(x,i,0x00); } } void clear_screen() { uchar i,j; for(i=0;i<8;i++) for(j=0;j<128;j++) { if(j<64) {CS1=0;CS2=1; lcd_write(i,j,0x00); } else {CS1=1;CS2=0; lcd_write(i,j-64,0x00); } } } void max_min() { uchar i; max=shuju[0]; min=shuju[0]; for(i=1;i<64;i++) { if(shuju[i]>max) max=shuju[i]; else if(shuju[i]<min) min=shuju[i]; } p_p=max-min; pp[0]=p_p/10; pp[1]=p_p%10; CS1=1;CS2=0; lcd_number(6,11,xx[pp[0]]); lcd_number(6,19,dian); lcd_number(6,25,xx[pp[1]]); } void biankuang() { uchar i; CS1=0;CS2=1; for(i=0;i<64;i++) {lcd_write(0,i,0x01); lcd_write(7,i,0x80); } CS1=1;CS2=0; for(i=0;i<8;i++) lcd_write(i,0,0xff); } void t0() interrupt 1 //计数 {} void t1() interrupt 3 //定时 { m++; TH1=0x3c; TL1=0xb0; if(m==20) {m=0; TR0=0;TR1=0; ret=0;ret=1; //停止计数 // TH1=0x3c; // TL1=0xb0; frequency=256*TH0+TL0; fre[0]=frequency/100; fre[1]=frequency%100/10; fre[2]=frequency%10; TH0=0x00;TL0=0x00; TR0=1;TR1=1; start=0;start=1; } } void fre_display() { CS1=1;CS2=0; lcd_number(2,11,xx[fre[0]]); lcd_number(2,19,xx[fre[1]]); lcd_number(2,27,xx[fre[2]]); } main() { lcd_initial(); clear_screen(); biankuang(); CS1=1;CS2=0; lcd_char(0,5,pin); lcd_char(0,21,lv); lcd_zimu(2,43,H); lcd_zimu(2,53,Z); lcd_zimu(6,43,V); lcd_char(4,5,feng); lcd_char(4,21,feng); lcd_char(4,37,zhi); ret=0;ret=1; //将D触发器清零 TMOD=0x95; //T0计数模式，T1定时模式需INT1置位 TH0=0x00;TL0=0x00; TH1=0x3c;TL1=0xb0; ET0=1;ET1=1;EA=1;PT1=1; TR0=1;TR1=1; //开T0,T1 start=0;start=1; //开启正脉冲 while(1) { sample(); max_min(); CS1=0;CS2=1; lcd_display(); delay(500); clear(); fre_display(); } }