51c单片机开发

//TX-1C实验板//芯片 STC89C52RC//晶振频率 11.0592MHz//=====一个LED灯闪#include<reg52.h>#define uint unsigned intsbit led1=P1^0;void delay1s();void main(){while(1){led1=0;delay1s();led1=1;delay1s();}}void delay1s(){uint i,j;for(i=500;i>0;i--)for(j=110;j>0;j--);}//======流水灯程序#include<reg52.h>#include<intrins.h>#define uint unsigned int#define uchar unsigned charvoid delayms(uint xms);uchar aa;void main(){aa=0xfe;while(1){P1=aa;;delayms(500);aa=_crol_(aa,1);}}void delayms(uint xms){uint i,j;for(i=xms;i>0;i--)for(j=110;j>0;j--);}//=====启动蜂鸣#include<reg52.h>#include<intrins.h>#define uint unsigned int#define uchar unsigned charsbit beep=P2^3;void delay(uint z);void main(){while(1){beep=0;delay(100);beep=1;delay(10000000);}}void delay(uint z){uint x,y;for(x=z;x>0;x--)for(y=110;y>0;y--);}//======数码管的显示；数字6#include<reg52.h>sbit dula=P2^6;sbit wela=P2^7;void main(){wela=1;P0=0xfe;wela=0;dula=1;P0=0x7d;dula=0;while(1);}//======数码管的静态显示#include<reg52.h>#define uint unsigned int #define uchar unsigned charsbit dula=P2^6;sbit wela=P2^7;uchar num;uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};void delayms(uint);void main(){wela=1;P0=0xc0;  wela=0;while(1){for(num=0;num<16;num++){dula=1;P0=table[num];dula=0;delayms(1000);}}}void delayms(uint xms){ uint x,y; for(x=xms;x>0;x--)  for(y=110;y>0;y--);}//======数码管的动态显示#include<reg52.h>#define uint unsigned int #define uchar unsigned charsbit dula=P2^6;sbit wela=P2^7;uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};void delayms(uint);void main(){while(1){dula=1;P0=table[1];dula=0;P0=0xff;wela=1;P0=0xfe;wela=0;delayms(500);dula=1;P0=table[2];dula=0;P0=0xff;wela=1;P0=0xfd;wela=0;delayms(500);dula=1;P0=table[3];dula=0;P0=0xff;wela=1;P0=0xfb;wela=0;delayms(500);dula=1;P0=table[4];dula=0;P0=0xff;wela=1;P0=0xf7;wela=0;delayms(500);dula=1;P0=table[5];dula=0;P0=0xff;wela=1;P0=0xef;wela=0;delayms(500);dula=1;P0=table[6];dula=0;P0=0xff;wela=1;P0=0xdf;wela=0;delayms(500);}}void delayms(uint xms){ uint x,y; for(x=xms;x>0;x--)  for(y=110;y>0;y--);}//======定时器0工作方式1=====#include<reg52.h>#define uchar unsigned char#define uint unsigned int uchar num;void main(){P1=0x55;TMOD=0x01;TH0=(65536-50000)/256;TL0=(65536-50000)%256;EA=1;ET0=1;TR0=1;while(1){if(num==20){num=0;P1=~P1;}}}void t0_time() interrupt 1{TH0=(65536-50000)/256;TL0=(65536-50000)%256;num++;}//=======用定时器0的方式1实现第一个发光管以ms间隔闪烁，用定时器1的方式1实现数码管前两位59s循环计时。#include<reg52.h>#define uchar unsigned char#define uint unsigned intsbit dula=P2^6;sbit wela=P2^7;sbit led1=P1^0;uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};void delayms(uint);void display(uchar,uchar);uchar num,num1,num2,shi,ge;void main(){led1=0;TMOD=0x11;//00010001TH0=(65536-50000)/256;TL0=(65539-50000)%256;TH1=(65536-50000)/256;TL1=(65539-50000)%256;EA=1;ET0=1;ET1=1;TR0=1;TR1=1;while(1){display(shi,ge);}}void display(uchar s,uchar g){dula=1;P0=table[s];dula=0;P0=0xff;wela=1;P0=0xfe;wela=0;delayms(5);dula=1;P0=table[g];dula=0;P0=0xff;wela=1;P0=0xfd;wela=0;delayms(5);}void delayms(uint xms){uint i,j;for(i=xms;i>0;i--)for(j=110;j>0;j--);}void t0_time() interrupt 1{TH0=(65536-50000)/256;TL0=(65539-50000)%256;num1++;if(num1==20){num1=0;led1=~led1;}}void t1_time() interrupt 3{TH1=(65536-50000)/256;TL1=(65539-50000)%256;num2++;if(num2==20){num2=0;num++;if(num==60)num=0;shi=num/10;ge=num%10;}}//===========用数码管的前两位显示一个十进制数，变化范围从00~59，开始时显示00，每按下s2键一次，数值加一；每按下s3键一次，数值减一；每按下s4键一次，数值归零；每按下s5键一次，数值停止自动加1，保持显示原数，再按s5利用定时器功能数值开始自动每秒加1；#include<reg52.h>#define uchar unsigned char#define uint unsigned intsbit key1=P3^4;//s2sbit key2=P3^5;//s3sbit key3=P3^6;//s4sbit key4=P3^7;//s5sbit dula=P2^6;sbit wela=P2^7;uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};void delayms(uint);uchar numt0,num;void display(uchar);void init();void keyscan();void main(){init();while(1){keyscan();display(num);}}void display(uchar numdis){uchar s,g;s=numdis/10;g=numdis%10;dula=1;P0=table[s];dula=0;P0=0xff;wela=1;P0=0xfe;wela=0;delayms(5);dula=1;P0=table[g];dula=0;P0=0xff;wela=1;P0=0xfd;wela=0;delayms(5);}void delayms(uint xms){uint i,j;for(i=xms;i>0;i--)for(j=110;j>0;j--);}void init(){TMOD=0x01;TR0=1;TH0=(65536-45872)/256;TL0=(65536-45872)%256;EA=1;ET0=1;numt0=0;num=0;}void keyscan(){if(key1==0){delayms(10);if(key1==0){num++;if(num==60)num=0;while(!key1);}}if(key2==0){delayms(10);if(key2==0){if(num==0)num=60;num--;while(!key2);}}if(key3==0){delayms(10);if(key3==0){num=0;while(!key3);}}if(key4==0){delayms(10);if(key4==0){while(!key4);TR0=~TR0;}}}void t0_time() interrupt 1{TH0=(65536-45872)/256;TL0=(65536-45872)%256;numt0++;if(numt0==20){numt0=0;num++;if(num==60)num=0;}}//=========实验板上电时，数码管不显示，顺序按下矩阵键盘后，在数码管上依次显示0~F，6个数码管同时静态显示即可#include<reg52.h>#define uchar unsigned char#define uint unsigned intsbit dula=P2^6;sbit wela=P2^7;uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};void delayms(uint);void display(uchar num);void matrixkeyscan();void main(){P0=0;dula=1;dula=0;P0=0xc0;wela=1;wela=0;while(1){matrixkeyscan();}}void display(uchar num){P0=table[num];dula=1;dula=0;}void delayms(uint xms){uint i,j;for(i=xms;i>0;i--)for(j=110;j>0;j--);}void matrixkeyscan(){uchar temp,key;P3=0xfe;temp=P3;temp=temp&0xf0;if(temp!=0xf0){delayms(10);temp=P3;temp=temp&0xf0;if(temp!=0xf0){temp=P3;switch(temp){case 0xee:key=0;break;case 0xde:key=1;break;case 0xbe:key=2;break;case 0x7e:key=3;break;default:key=0;break;}while(temp!=0xf0){temp=P3;temp=temp&0xf0;}display(key);}}P3=0xfd;temp=P3;temp=temp&0xf0;if(temp!=0xf0){delayms(10);temp=P3;temp=temp&0xf0;if(temp!=0xf0){temp=P3;switch(temp){case 0xed:key=4;break;case 0xdd:key=5;break;case 0xbd:key=6;break;case 0x7d:key=7;break;default:key=0;break;}while(temp!=0xf0){temp=P3;temp=temp&0xf0;}display(key);}}P3=0xfb;temp=P3;temp=temp&0xf0;if(temp!=0xf0){delayms(10);temp=P3;temp=temp&0xf0;if(temp!=0xf0){temp=P3;switch(temp){case 0xeb:key=8;break;case 0xdb:key=9;break;case 0xbb:key=10;break;case 0x7b:key=11;break;default:key=0;break;}while(temp!=0xf0){temp=P3;temp=temp&0xf0;}display(key);}}P3=0xf7;temp=P3;temp=temp&0xf0;if(temp!=0xf0){delayms(10);temp=P3;temp=temp&0xf0;if(temp!=0xf0){temp=P3;switch(temp){case 0xe7:key=12;break;case 0xd7:key=13;break;case 0xb7:key=14;break;case 0x77:key=15;break;default:key=0;break;}while(temp!=0xf0){temp=P3;temp=temp&0xf0;}display(key);}}}//=========用单片机控制ADC0804进行模数转换，当拧松实验板上A/D旁边的电位器Re2时，在数码管的前三位以十进制方式动态显示出A/D转换后的数字量（8位A/D转换后数值在0~255变化）#include<reg52.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned intsbit dula=P2^6;sbit wela=P2^7;sbit adwr=P3^6;sbit adrd=P3^7;uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};void delayms(uint);void display(uchar,uchar,uchar);void main(){uchar a,A1,A2,A3,adval;wela=1;P0=0x7f;wela=0;while(1){adwr=1;_nop_();adwr=0;_nop_();adwr=1;for(a=10;a>0;a--){display(A1,A2,A3);}P1=0xff;adrd=1;_nop_();adrd=0;_nop_();adval=P1;adrd=1;A1=adval/100;A2=adval%100/10;A3=adval%10;}}void display(uchar bai,uchar shi,uchar ge){dula=1;P0=table[bai];dula=0;P0=0xff;wela=1;P0=0x7e;wela=0;delayms(5);dula=1;P0=table[shi];dula=0;P0=0xff;wela=1;P0=0x7d;wela=0;delayms(5);dula=1;P0=table[ge];dula=0;P0=0xff;wela=1;P0=0x7b;wela=0;delayms(5);}void delayms(uint xms){uint i,j;for(i=xms;i>0;i--)for(j=110;j>0;j--);}//=================用单片机控制DAC0832芯片输出电流，让发光二极管D12由灭均匀变到最亮，再由最亮均匀熄灭。在最亮和最暗时使用蜂鸣器分别警报一声，完成整个周期时间控制在5s左右，循环变化。#include<reg52.h>#define uchar unsigned char#define uint unsigned intsbit dula=P2^6;sbit wela=P2^7;sbit dawr=P3^6;sbit dacs=P3^2;sbit beep=P2^3;void delayms(uint);void main(){uchar val,flag;dula=0;wela=0;dacs=0;dawr=0;P0=0;while(1){if(flag==0){val+=5;P0=val;if(val==255){flag=1;beep=0;delayms(100);beep=1;}delayms(50);}else{val-=5;P0=val;if(val==0){flag=0;beep=0;delayms(100);beep=1;}delayms(50);}}}void delayms(uint xms){uint i,j;for(i=xms;i>0;i--)for(j=110;j>0;j--);}//=========在上位机上用串口调试助手发送一个字符X，单片机收到字符后返回给上位机”Xi get”,串口波特率设为9600bps.#include<reg52.h>#define uchar unsigned char#define uint unsigned int uchar flag,a,i;uchar code table[]="I get ";void init(){TMOD=0x20;//设定T1定时器工作方式2TH1=0xfd;//T1定时器装初值TL1=0xfd;//T1定时器装初值TR1=1;//启动T1定时器SM0=0;//设定串口工作方式1SM1=1;// 设定串口工作方式1REN=1;//允许串行接收数据EA=1;//开总中断ES=1;//开串口中断}void main(){init();while(1){if(flag==1){ES=0;//SBUF=a;//发送数据while(!TI);TI=0;//for(i=0;i<6;i++){SBUF=table[i];while(!TI);TI=0;}//ES=1;flag=0;}}}void ser() interrupt 4{RI=0;a=SBUF;//接收数据flag=1;}//==================#include<reg52.h>#include<intrins.h>#include<stdio.h>#define uchar unsigned char#define uint unsigned int sbit dula=P2^6;sbit wela=P2^7;sbit adwr=P3^6;sbit adrd=P3^7;uchar flag,a;uchar flag_uart,flag_time,flag_on,a,i,t0_num,ad_val;float ad_vo;uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};void delayms(uint xms){uint i,j;for(i=xms;i>0;i--)for(j=110;j>0;j--);}void init(){TMOD=0x21;//SCON=0X50;TH0=(65536-50000)/256;TH0=(65536-50000)%256;TH1=0xfd;TL1=0xfd;TR1=1;SM0=0;SM1=1;REN=1;EA=1;ES=1;}void display(uchar value){uchar b,s,g;b=value/100;s=value%100/10;g=value%10;dula=1;P0=table[b];dula=0;P0=0xff;wela=1;P0=0x7e;wela=0;delayms(5);dula=1;P0=table[s];dula=0;P0=0xff;wela=1;P0=0x7d;wela=0;delayms(5);dula=1;P0=table[g];dula=0;P0=0xff;wela=1;P0=0x7b;wela=0;delayms(5);}uchar get_ad(){uchar adval;adwr=1;_nop_();adwr=0;_nop_();adwr=1;P1=0xff;adrd=1;_nop_();adrd=0;_nop_();adval=P1;adrd=1;return adval;}void main(){init();wela=1;P0=0x7f;wela=0;while(1){if(flag_uart==1){flag_uart=0;ES=0;TI=1;switch(flag_on){case 0:puts("turn on ad!\n");break;case 1:puts("turn off ad!\n");break;case 2:puts("error!\n");break;//default://puts("warn!");//break;}while(!TI);TI=0;ES=1;}if(flag_time==1){flag_time=0;ad_val=get_ad();ad_vo=(float)ad_val*5.0/256.0;ES=0;TI=1;printf("the voltage is %fV\n",ad_vo);while(!TI);TI=0;ES=1;}display(ad_val);}}void timer0() interrupt 1{TH0=(65536-50000)/256;TH0=(65536-50000)%256;t0_num++;if(t0_num==20){t0_num=0;flag_time=1;}}void ser() interrupt 4{RI=0;a=SBUF;flag_uart=1;if(a==1)flag_on=0;else if(a==2)flag_on=1;elseflag_on=2;}//=================