51單片機ad轉換數碼管顯示的程序

Ⅰ 51單片機顯示八位數碼管的C語言程序

1、最開始，我們先打開keil。

Ⅱ 51單片機電子鍾程序數碼管顯示

#include<reg51.h>

#define uchar unsigned char

sbit la=P2^6;
sbit wela=P2^7;
sbit beep=P2^3;
unsigned char j,k,a1,a0,b1,b0,c1,c0,s,f,m,key=10,temp,qq;
uchar shi20,shi10,fen20,fen10,miao20,miao10,new,ok=1,wei;
unsigned int pp;
unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

void delay(unsigned char i)
{
for(j=i;j>0;j--)
for(k=125;k>0;k--);
}
void display(uchar shi2,uchar shi1,uchar fen2,uchar fen1,uchar miao2,uchar miao1)
{
la=0;
P0=table[shi2];
la=1;
la=0;

wela=0;
P0=0xfe;
wela=1;
wela=0;
delay(5);

P0=table[shi1]|0x80;
la=1;
la=0;

P0=0xfd;
wela=1;
wela=0;
delay(5);

P0=table[fen2];
la=1;
la=0;

P0=0xfb;
wela=1;
wela=0;
delay(5);

P0=table[fen1]|0x80;
la=1;
la=0;

P0=0xf7;
wela=1;
wela=0;
delay(5);

P0=table[miao2];
la=1;
la=0;

P0=0xef;
wela=1;
wela=0;
delay(5);

P0=table[miao1];
la=1;
la=0;

P0=0xdf;
wela=1;
wela=0;
delay(5);
}

void keyscan0()
{
P3=0xfb;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xbb:
ok=0;
break;

case 0x7b:
ok=1;
break;
}
}
}
}

void keyscan()
{
{
P3=0xfe;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xee:
key=0;
wei++;
break;

case 0xde:
key=1;
wei++;
break;

case 0xbe:
key=2;
wei++;
break;

case 0x7e:
key=3;
wei++;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
}
P3=0xfd;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xed:
key=4;
wei++;
break;

case 0xdd:
key=5;
wei++;
break;

case 0xbd:
key=6;
wei++;
break;

case 0x7d:
key=7;
wei++;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
}
P3=0xfb;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xeb:
key=8;
wei++;
break;

case 0xdb:
key=9;
wei++;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
}
}
}

void main()
{
TMOD=0x01;

TH0=(65536-46080)/256;// 由於晶振為11.0592,故所記次數應為46080，計時器每隔50000微秒發起一次中斷。
TL0=(65536-46080)%256;//46080的來歷，為50000*11.0592/12
ET0=1;
EA=1;

while(1)
{ keyscan0();

if(ok==1)
{ TR0=1;
wei=0;

if(pp==20)
{ pp=0;
m++;
if(m==60)
{
m=0;
f++;
if(f==60)
{
f=0;
s++;
if(s==24) //為24h一個循環，若要12h，只需在此改為12即可。
{
s=0;
}
}
}
}

a0=s%10;
a1=s/10;
b0=f%10;
b1=f/10;
c0=m%10;
c1=m/10;
display(a1,a0,b1,b0,c1,c0);
}
else
{ TR0=0;
keyscan();
if(key!=10)
{

switch(wei)
{
case 1: if(key<3) //小時最高位為2
a1=key;
else
wei--;
break;
case 2: if(a1==1|a1==0)
a0=key;
else
if(key<5)
a0=key; //當小時最高位為2時，低位最高為4
break;
case 3: if(key<7) //分鍾最高位為6
b1=key;
else
wei--;
break;
case 4: b0=key; break;
case 5: if(key<7) //秒最高位為6
c1=key;
else
wei--;
break;
case 6: c0=key; break;
}
key=10;
}
m=c1*10+c0;
f=b1*10+b0;
s=a1*10+a0;
display(a1,a0,b1,b0,c1,c0);
}
}
}

void time0() interrupt 1
{ TH0=(65536-46080)/256;
TL0=(65536-46080)%256;
pp++;
}

Ⅲ 誰做過單片機和AD轉換，多通道的AD，在兩個通道該怎麼切換並且用數碼管顯示的

單片機at89s51和ADC0809
1）匯編源程序：
CH EQU 30H
DPCNT EQU 31H
DPBUF EQU 33H
GDATA EQU 32H
ST BIT P3.0
OE BIT P3.1
EOC BIT P3.2
ORG 00H
LJMP START
ORG 0BH
LJMP T0X
ORG 30H
START: MOV CH,#0BCH
MOV DPCNT,#00H
MOV R1,#DPCNT
MOV R7,#5
MOV A,#10
MOV R0,#DPBUF
LOP: MOV @R0,A
INC R0
DJNZ R7,LOP
MOV @R0,#00H
INC R0
MOV @R0,#00H
INC R0
MOV @R0,#00H
MOV TMOD,#01H
MOV TH0,#(65536-4000)/256
MOV TL0,#(65536-4000) MOD 256
SETB TR0
SETB ET0
SETB EA
WT: CLR ST
SETB ST
CLR ST
WAIT: JNB EOC,WAIT
SETB OE
MOV GDATA,P0
CLR OE
MOV A,GDATA
MOV B,#100
DIV AB
MOV 33H,A
MOV A,B
MOV B,#10
DIV AB
MOV 34H,A
MOV 35H,B
SJMP WT
T0X: NOP
MOV TH0,#(65536-4000)/256
MOV TL0,#(65536-4000) MOD 256
MOV DPTR,#DPCD
MOV A,DPCNT
ADD A,#DPBUF
MOV R0,A
MOV A,@R0
MOVC A,@A+DPTR
MOV P1,A
MOV DPTR,#DPBT
MOV A,DPCNT
MOVC A,@A+DPTR
MOV P2,A
INC DPCNT
MOV A,DPCNT
CJNE A,#8,NEXT
MOV DPCNT,#00H
NEXT: RETI
DPCD: DB 3FH,06H,5BH,4FH,66H
DB 6DH,7DH,07H,7FH,6FH,00H
DPBT: DB 0FEH,0FDH,0FBH,0F7H
DB 0EFH,0DFH,0BFH,07FH
END

2）C語言源程序
#include
unsigned char code dispbitcode[]={0xfe,0xfd,0xfb,0xf7,
0xef,0xdf,0xbf,0x7f};
unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66,
0x6d,0x7d,0x07,0x7f,0x6f,0x00};
unsigned char dispbuf[8]={10,10,10,10,10,0,0,0};
unsigned char dispcount;
sbit ST="P3"^0;
sbit OE="P3"^1;
sbit EOC="P3"^2;
unsigned char channel="0xbc";//IN3
unsigned char getdata;
void main(void)
{
TMOD=0x01;
TH0=(65536-4000)/256;
TL0=(65536-4000)%256;
TR0=1;
ET0=1;
EA=1;
P3=channel;
while(1)
{
ST=0;
ST=1;
ST=0;
while(EOC==0);
OE=1;//片選
getdata=P0;
OE=0;
dispbuf[2]=getdata/100;
getdata=getdata%10;
dispbuf[1]=getdata/10;
dispbuf[0]=getdata%10;
}
}
void t0(void) interrupt 1 using 0
{
TH0=(65536-4000)/256;
TL0=(65536-4000)%256;
P1=dispcode[dispbuf[dispcount]];
P2=dispbitcode[dispcount];
dispcount++;
if(dispcount==8)
{
dispcount=0;
}
}

Ⅳ 51單片機與AD轉換程序

/*
此程序通過對DAC0832操作，實現D/A轉換。按INT1鍵DAC0832輸出電壓變高，按s3鍵DAC0832電壓變低。
輸出介面是"D/A OUT"
*/
#include<reg51.h>

//////////////////////
sbit le1=P1^0;/*ic1 74hc373使能端*/
sbit dac0832_cs=P3^7;
sbit dac0832_wr=P1^1;
sbit int1_k=P3^3;
sbit s3_k=P3^6;
sbit blight=P0^6;
void s_q00();
void s_q01();
void s_q02();
void s_q03();
void s_q04();
void s_q05();
void s_q06();
void s_q07();

void c_q00();
void c_q01();
void c_q02();
void c_q03();
void c_q04();
void c_q05();
void c_q06();
void c_q07();

//void delay1();
void delayms(unsigned int i);

void delay100us() ;
void initi_lcd();
void initi();
void c_rw();
void s_rw();
void c_e();
void s_e();
void c_rs(void);
void s_rs(void);
void display(unsigned int addr,char a);
void out_74ls164(unsigned char i);

unsigned char q1=0;
unsigned char da_out_74ls164=0,pwm1=0;

void d_to_a(unsigned char dat)//DAC0832寫函數。
{

out_74ls164(dat);
//c_q14(); /*片選*/
dac0832_cs=0;
//c_q13(); /*寫數據*/
//s_q13();
dac0832_wr=0;
dac0832_wr=1;
// s_q14();/*禁止轉換*/
dac0832_cs=1;

}
main()
{
unsigned char dat=0;
initi_lcd();

display(0,'o');
display(1,'u');
display(2,'t');
display(3,'p');
display(4,'u');
display(5,'t');
display(6,':');
display(7,0x30+dat/100);display(8,0x30+dat%100/10);display(9,0x30+dat%10);
while(1)
{

if(int1_k==0) {dat++;display(7,0x30+dat/100);display(8,0x30+dat%100/10);display(9,0x30+dat%10);}
if(s3_k==0) {dat--;display(7,0x30+dat/100);display(8,0x30+dat%100/10);display(9,0x30+dat%10);}
blight=1;
d_to_a(dat);

delayms(60);
}

}

void display(unsigned int addr,char a)
{
s_e();
c_rs();
c_rw();
// P0=0x80+i;
out_74ls164(0x80+addr); /*寫地址*/
c_e();
delay100us();
s_e();
s_rs();
//P0=a;
out_74ls164(a);/*寫數據*/
c_e();
delay100us();
s_e();
}

void delayms(unsigned int i)
{
unsigned int j;
for(;i>0;i--)
for(j=100;j>0;j--);
}

void initi_lcd()
{
delayms(10);
c_rw();
s_e();
c_rs();
// P0=0x01;
out_74ls164(0x01);
c_e();
delayms(5);
s_e();
c_rs();
// P0=0x38;
out_74ls164(0x38);

c_e();
delayms(5);
s_e();
//P0=0x0f;
out_74ls164(0x0f);
c_e();
delayms(5);
s_e();
// P0=0x04;
out_74ls164(0x04);
c_e();
delayms(5);
s_e();

}

void out_74ls164(unsigned char i)
{
unsigned char j,i_tem;
// s_q27();
for(j=0;j<8;j++)
{
i_tem=i<<j;
if(i_tem&0x80)s_q01();/*74ls164數據*/
else c_q01();
c_q00();/*74ls164時鍾*/
s_q00();
}

}
void s_rs(){s_q05();}
void c_rs(){c_q05();}
void s_rw(){s_q06();}
void c_rw(){c_q06();}
void s_e(){s_q07();}
void c_e(){c_q07();}

void delay100us() { unsigned int i=2; for(;i>0;i--); }

///////////////////////////////////////////////////////
//////////////////////////////////////////////////
/*74hc373擴展介面函數：s表示置1，c表示置0，q1表示ic1 74hc373 ，
q2表示ic2 74hc373 ，僅接著的數字表示相應輸出Q的序號 */

void s_q00(){q1=q1|0x01; P0=q1; le1=1; le1=0; }
void s_q01(){q1=q1|0x02; P0=q1; le1=1; le1=0; }
void s_q02(){q1=q1|0x04; P0=q1; le1=1; le1=0; }
//void s_q03(){q1=q1|0x08; P0=q1; le1=1; le1=0; }
void s_q04(){q1=q1|0x10; P0=q1; le1=1; le1=0; }
void s_q05(){q1=q1|0x20; P0=q1; le1=1; le1=0; }
void s_q06(){q1=q1|0x40; P0=q1; le1=1; le1=0; }
void s_q07(){q1=q1|0x80; P0=q1; le1=1; le1=0; }

void c_q00(){q1=q1&(~0x01); P0=q1; le1=1; le1=0;}
void c_q01(){q1=q1&(~0x02); P0=q1; le1=1; le1=0;}
void c_q02(){q1=q1&(~0x04); P0=q1; le1=1; le1=0;}
//void c_q03(){q1=q1&(~0x08); P0=q1; le1=1; le1=0;}
void c_q04(){q1=q1&(~0x10); P0=q1; le1=1; le1=0;}
void c_q05(){q1=q1&(~0x20); P0=q1; le1=1; le1=0;}
void c_q06(){q1=q1&(~0x40); P0=q1; le1=1; le1=0;}
void c_q07(){q1=q1&(~0x80); P0=q1; le1=1; le1=0;}

一塊實驗板的例子，DA轉換（DAC0832），自己詳細分析一下就可以了