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电阻电容测量仪

2017-10-9 23:08:11 7079

0 #include #include #define uchar unsigned char #define uint unsigned int *it RS=P2^6; it RW=P2^5; it E=P2^7;//液晶使能端端口定义 it R=P1^0;//电阻输入定义 it C=P1^1; //电容输入端口定义 it L=P1^2; //电感输入端口定义 it A1=P1^3; it A0=P1^4; //74153的数据端口 /P0口作为数据端/ #define LCD_data P0 uchar code table1[10]={"R= om"}; uchar code table2[10]={"C= pF"}; uchar code table3[10]={"L= mH"}; uchar code f_table[88]={13,14,15,16,17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100}; uchar code f_correct[88]={9,10, 11, 12, 12, 12, 13, 14, 15, 16, 17, 18, 18, 18, 19, 20, 21, 21, 22, 23, 24, 25, 25, 26, 26, 27, 28, 29, 29, 30, 30, 31, 32, 33, 33, 34, 35, 35, 36, 37, 38, 38, 39, 40, 41, 41, 42, 42, 43, 44, 45, 45, 46, 47, 48, 49, 49, 50, 51, 51, 52, 53, 54, 54, 55, 55, 56, 57, 57, 58, 59, 60, 60, 62, 62, 63, 64, 64, 65, 66, 66, 67, 67, 68, 69, 70, 71, 71,}; uchar a6,a5,a4,a3,a2,a1; uchar flag; unsigned long cnt,cnt1; uchar f_cnt; /函数声明/ void delay_us(); //18us void delay_ms(uint); void lcd_init(); void lcd_write_com(uchar com); void lcd_write_dat(uchar dat); void lcd_init(); void lcd_display(uchar add,uchar dat); /延时函数/ void delay_us() { uchar x; for(x=0;x<5;x++); } void delay_ms(uint z) { uint x,y; for(x=0;x for(y=0;y<123;y++); } /LCD写指令函数/ void lcd_write_com(uchar com) { E=0; RS=0; RW=0; delay_us(); LCD_data=com; E=1; //高脉冲写入数据 delay_us(); E=0; } /写数据函数/ void lcd_write_dat(uchar dat) { E=0; RS=1; RW=0; delay_us(); LCD_data=dat; E=1; //高脉冲写入数据 delay_us(); E=0; } /液晶初始化函数/ void lcd_init() //lcd初始化 { delay_ms(15); lcd_write_com(0x38); delay_ms(10); lcd_write_com(0x0c); lcd_write_com(0x06); lcd_write_com(0x01); delay_ms(2); } /定时器初始化函数/ void timer_init(void) //定时器初始化 { TMOD=0X51; //T1为计数方式方式1，T1定时模式 PT0=1; /中断优先/ TH0=0x3c; TL0=0xb0;//T0初始值为50MS TH1=0; TL1=0;//T1为0 ET0=1; ET1=1; TR0=1; TR1=1; EA=1; } ///lcd显示（地址，数据）/ void lcd_display(uchar add,uchar dat) { lcd_write_com(add); lcd_write_dat(dat); delay_us(); } void real_display(void) { if(!R) { // while(!R); A1=A0=0;//74153的选择端为低电平，C3为任意值，输出高低电平 lcd_display(0x80,table1[0]); lcd_display(0x80+1,table1[1]); lcd_display(0x80+8,table1[8]); lcd_display(0x80+9,table1[9]); } else if(!C) { A0=0;A1=1;//74153的选择端为一低一高，C3为任意值，输出高低电平 lcd_display(0x80,table2[0]); lcd_display(0x80+1,table2[1]); lcd_display(0x80+8,table2[8]); lcd_display(0x80+9,table2[9]); } else if(!L)//74153的选择端为一高一低，C3为任意值，输出高低电平 { A0=1;A1=0; lcd_display(0x80,table3[0]); lcd_display(0x80+1,table3[1]); lcd_display(0x80+8,table3[8]); lcd_display(0x80+9,table3[9]); } if(a6) lcd_display(0x80+2,0x30+a6); else lcd_display(0x80+2,' '); if(a6\|\|a5) lcd_display(0x80+3,0x30+a5); else lcd_display(0x80+3,' '); if(a6\|\|a5\|\|a4) lcd_display(0x80+4,0x30+a4); else lcd_display(0x80+4,' '); if(a6\|\|a5\|\|a4\|\|a3) lcd_display(0x80+5,0x30+a3); else lcd_display(0x80+5,' '); if(a6\|\|a5\|\|a4\|\|a3\|\|a2) lcd_display(0x80+6,0x30+a2); else lcd_display(0x80+6,' '); lcd_display(0x80+7,0x30+a1); } /误差修正函数/ void correct(void) { uchar i,k; unsigned long wucha; if(cnt<100000) //100KHz以内的修正 { if(cnt>980&&cnt<2100) cnt-=1; if(cnt>=2100&&cnt<3900) cnt-=2; if(cnt>=3900&&cnt<4800) cnt-=3; if(cnt>=4800&&cnt<5700) cnt-=4; if(cnt>=5700&&cnt<8000) cnt-=5; if(cnt>=8000&&cnt<9100) cnt-=6; if(cnt>=9100&&cnt<10900) cnt-=7; if(cnt>=10900&&cnt<11900) cnt-=8; if(cnt>=11900&&cnt<13000) cnt-=9; if(cnt>=13000&&cnt<=100000) { k=cnt/1000; for(i=0;i<88;i++) { if(k==f_table) { cnt-=f_correct; } } } } if(cnt>100000) { wucha=(cnt/1000)73065/100000; cnt-=wucha; } } /主函数/ void main() { timer_init(); lcd_init(); while(1) { if(flag==1) { real_display(); flag=0; } } } /定时器函数/ void timer0() interrupt 1 { uchar timer0; TH0=0x3c; //50ms TL0=0xb0; timer0++; if(timer0==20) { TR1=0; //关闭的计数器 EA=0; cnt=TL1+TH1256+f_cnt65536; correct(); //cnt1=(1e+9)/(20.693 cnt)-20000/2; if(!R) { // while(!R); cnt1=1000000/(0.20.693cnt)-165; } else if(!C) { cnt1=1000000000/(0.6933510cnt); } else if(!L) { cnt1=(1e+9)/(43.143.14cntcnt0.05); } timer0=0; a6=cnt1%10000000/100000; a5=cnt1%100000/10000; a4=cnt1%10000/1000; a3=cnt1%1000/100; a2=cnt1%100/10; a1=cnt1%10; flag=1; TH1=0; TL1=0; TH0=0x3c; TL0=0xb0; cnt=0; f_cnt=0; EA=1; TR1=1; //打开计数器 } } void int1() interrupt 3 { f_cnt++; } 1 RLC.png (21.42 KB, 下载次数: 23) 基于51单片机的RLC测量仪（程序仿真）.rar 209.5 KB , 下载次数: 57
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