源程序#include <reg51.h> #include <intrins.h> #include <ADC0808.c> sbit DI=P2^2; // 數據\指令選擇 sbit RW=P2^1; // 讀\寫選擇 sbit E=P2^0; // 讀\寫使能 sbit CS1=P2^4; // 片選1 sbit CS2=P2^3; // 片選2 sbit busy=P1^7; sbit jia=P3^7; sbit jian=P3^3; sbit jia1=P3^0; sbit jian1=P3^1; unsigned int i; unsigned char ye,lei,shu; unsigned char a[94]; char code t[]={ 0x00,0x00,0x08,0x00,0x04,0x00,0x02,0x00,0x01,0x80,0x40,0x60,0x80,0x00,0x7F,0xFF,//小 0x00,0x00,0x00,0x20,0x00,0x40,0x00,0x80,0x01,0x00,0x06,0x00,0x00,0x00,0x00,0x00, 0x00,0x80,0x00,0x80,0x00,0x82,0x00,0x82,0x00,0x82,0x40,0x82,0x80,0x82,0x7F,0xE2,//子 0x00,0xA2,0x00,0x92,0x00,0x8A,0x00,0x86,0x00,0x80,0x00,0xC0,0x00,0x80,0x00,0x00, 0x00,0x40,0x00,0x60,0x3F,0x5E,0x01,0x48,0x01,0x48,0xFF,0xFF,0x11,0x48,0x21,0x4C,//制 0x1F,0x68,0x00,0x40,0x07,0xF8,0x40,0x00,0x80,0x00,0x7F,0xFF,0x00,0x00,0x00,0x00, 0x00,0x80,0x00,0x40,0x00,0x20,0xFF,0xF8,0x00,0x87,0x00,0x40,0x00,0x30,0x00,0x0F,//作 0xFF,0xF8,0x08,0x88,0x08,0x88,0x08,0xC8,0x0C,0x88,0x08,0x0C,0x00,0x08,0x00,0x00, }; void checkstate() { //bit dat; DI=0; RW=1; //P1=0x00; do { E=1; E=0; //僅當第7位為0時才可操作(判別busy信號) }while(busy==1); } void writecommand(unsigned char command) //寫命令 { checkstate(); DI=0; RW=0; P1=command; E=1; E=0; } void writedate(unsigned char date) //寫數據 { checkstate(); DI=1; RW=0; P1=date; E=1; E=0; } void pianxuan(unsigned int i) { if(i==1) CS1=0,CS2=1; if(i==2) CS1=1,CS2=0; if(i==3) CS1=0,CS2=0; } void cleanscreen() //清屏 { unsigned char page,i; for(page=0xb8;page<0xc0;page++) { writecommand(page); writecommand(0x40); for(i=0;i<64;i++) writedate(0x00); } } void init(void) //開顯示，起始行0行 { writecommand(0xc0); writecommand(0x3f); } void delay_50us(uint t) { uchar j; for(;t>0;t--) for(j=19;j>0;j--) ; } void shuju() { pianxuan(i); writecommand(ye); writecommand(lei); writedate(shu); } void qing() { uchar i; for(i=0xb8;i<=0xbf;i++) { ye=i; shu=0x00; shuju(); } } void main() { uint r,j,g=0,q,dianya=1,k,p; uchar U,m,l; pianxuan(3); cleanscreen(); init(); pianxuan(2); l=0xb8; for(k=0;k<4;k++,l=l+0x02) { ye=l; lei=0x70; for(r=0;r<16;r++) { shu=t[2*r+1+32*k]; shuju(); lei++; } ye=l+0x01; lei=0x70; for(r=0;r<16;r++) { shu=t[2*r+32*k]; shuju(); lei++; } } while(1) { uchar d1,d2,d3,d4,d5; aaa:do { adc(); }while((AD!=128)&&(AD!=129)&&(AD!=130)); U=AD; adc(); if(U>AD) goto aaa; while(jia==0) { while(jia==0); g=g+1; } while(jian==0) { while(jian==0); if(g!=0) g=g-1; } while(jia1==0) { while(jia1==0); dianya=dianya+1; } while(jian1==0) { while(jian1==0); if(dianya!=1) dianya=dianya-1; } for(j=0;j<94;j++) //AD采樣 { adc(); a[j]=AD; delay_50us(g); } lei=0x40; for(r=0,j=0;r<94;r++,j++) { if(j<64) i=1; if(j==64) lei=0x40; if(j>=64)i=2; qing(); //清掉之前的內容 AD=a[j]*0.196/dianya; //計算在12864的電壓值 if(AD<=7) ye=0xbf,shu=(0x80>>AD); else if(AD<=15)ye=0xbe,shu=0x80>>(AD-8); else if(AD<=23) ye=0xbd,shu=0x80>>(AD-16); else if(AD<=31) ye=0xbc,shu=0x80>>(AD-24); else if(AD<=39) ye=0xbb,shu=0x80>>(AD-32); else if(AD<=47) ye=0xba,shu=0x80>>(AD-40); else if(AD<=55) ye=0xb9,shu=0x80>>(AD-48); else if(AD<=63)ye=0xb8,shu=0x80>>(AD-56); if(r==0) { d1=shu; d2=ye; } if(r!=0) { d3=shu; d4=ye; if(ye==d2) { if(shu>d1) { d5=shu; d5=d5>>1; while(d5!=d1) {d5=d5>>1; shu=shu|(shu>>1);} } if(shu<d1) { d5=shu; d5=d5<<1; while(d5!=d1) {d5=d5<<1;shu=shu|(shu<<1);} } } if(ye<d2) { for(q=0;q<7;q++) { shu=shu|(shu<<1); } shuju(); ye++; while(ye<d2) {shu=0xff,shuju(),ye++;} if(ye==d2){ shu=0x01; if(shu<d1) { d5=shu; d5=d5<<1; while(d5!=d1) {d5=d5<<1;shu=shu|(shu<<1);} } } } if(ye>d2) { for(q=0;q<7;q++) { shu=shu|(shu>>1); } shuju(); ye--; while(ye>d2) {shu=0xff,shuju(),ye--;} if(ye==d2){ shu=0x80; if(shu>d1) { d5=shu; d5=d5>>1; while(d5!=d1) {d5=d5>>1;shu=shu|(shu>>1);} } } } } if(r!=0) { d1=d3; d2=d4; } shuju(); if(lei!=0x7f) lei++; } } }
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