Bài tập vi điều khiển 8051

Bài Tập Bài 3

Bài 4: LCD

Bài 4: LCD

D 5

D 6

D 7

R S T 9

X T A L 2

1 8

X T A L 1

1 9

P S E N 2 9

A L E / P R O GE A / V P P 3 0

3 1

P 1 0 1

P 1 1 2

P 1 2 3

P 1 3 4

P 1 4 5

P 1 5 6

P 1 6 7

P 1 7 8

P 2 0 / A 8 2 1

P 2 1 / A 9 2 2

P 2 2 / A 1 0 2 3

P 2 3 / A 1 1 2 4

P 2 4 / A 1 2 2 5

P 2 5 / A 1 3 2 6

P 2 6 / A 1 4 2 7

P 2 7 / A 1 5 2 8

P 3 0 / R X D

1 0

P 3 1 / T X D

1 1

P 3 2 / I N T 0

1 2

P 3 3 / I N T 1

1 3

P 3 4 / T 0

1 4

P 3 5 / T 1

1 5

P 3 6 / W R

1 6

P 3 7 / R D

1 7

P 0 0 / A D 0 3 9

P 0 1 / A D 1 3 8

P 0 2 / A D 2 3 7

P 0 3 / A D 3 3 6

P 0 4 / A D 4 3 5

P 0 5 / A D 5 3 4

P 0 6 / A D 6 3 3

P 0 7 / A D 7 3 2

U 1

A T 8 9 C 5 1

R 1 1 0 K

5 V

V C C

J 1

L C D

R 2

5 K

Y 1

1 2 M h z

C 1

3 3 p

C 2

3 3 p

R 3

1 0 K

5 V

LCD16x02

C A P A C I T O R P O L

5 V

C 6

1 0 4

D 0

D 1

D 2

D 3

D 4

#include <REGX52.H>

#include <string.h>

#define LCDdata P2 sbit BF=P2^7;

sbit RS=P3^7;

sbit RW=P3^6;

sbit EN=P3^5;

Bài 4: LCD

void wait(void) {

LCDdata=0xff;

while(BF){EN=0;delay(100);EN=1;delay(100);} RW=0;

}

Bài 4: LCD

void LCDwrite(unsigned char c) {

EN=1;

RS=1;

RW=1;

wait();

LCDdata=c;

EN=0;

}

Bài 4: LCD

void LCDcontrol(unsigned char x) {

EN=1;

RS=0;

RW=1;

wait();

LCDdata=x;

EN=0;

}

Bài 4: LCD

void LCDinit(void) {

LCDcontrol(0x30);

LCDcontrol(0x30);

LCDcontrol(0x30);

LCDcontrol(0x38);//2 dong ma tran 5x7 LCDcontrol(0x0c);//bat con tro

LCDcontrol(0x06); //tang con tro sang fai LCDcontrol(0x01); //xoa man hinh

}

Bài 4: LCD

void LCDputs(unsigned char *s,unsigned char row)

{ int len;

if(row==1)LCDcontrol(0x80);

else LCDcontrol(0xc0);

len=strlen(s);

while(len!=-1) {

LCDwrite(*s);delay(5000);

len ;

}

Bài 4: LCD

void LCDwritei(int d) {

int i,j,k,l;

i=d%10;

d=d/10;

j=d%10;

d=d/10;

k=d%10;

l=d/10;

LCDwrite(l);

LCDwrite(k);

LCDwrite(j);

LCDwrite(i);

Bài 4: LCD

void main(void) {

// char x;

// P2=0x00;

LCDinit();

LCDputs(“DKS_Group",1); LCDputs(“BKHN",2);

delay(30000);

while(1) {

} }

Bài 3: LED_7_SEG

void display(int x)

{

convert(x);

P0=0x00;led1=1; P1 = maled7[i]; delay(100); P0=0x00;led2=1; P1 = maled7[j]; delay(100); P0=0x00;led3=1; P1 = maled7[k]; delay(100); P0=0x00;led4=1; P1 = maled7[l]; delay(100); }

Bài 3: LED_7_SEG

void main() {

while(1) {

display(1234);

} }