CHƯƠNG TRÌNH 2 CẢM BIẾN

CHƯƠNG TRÌNH 2 CẢM BIẾN

/*

* File: newmain.c

* Author:

*

* Created on April 13, 2015,

*

* dung pic16f877a, thach anh 4MH, dien tro keo len portb

* 2 cam bien kich muc thap:RBO, RB1

* khi co nguoi vao bat den, co nguoi ra tat den: RB7

* bao so nguoi ra vao len led7 doan: PORTD quet led RC0,RC1

* LED ANOT

* RB4 lay max ra den va ra switch

*/

#include <htc.h>

#include <math.h>

CONFIG(WDTDIS & PWRTEN & UNPROTECT & BORDIS & LVPDIS);

#define _XTAL_FREQ 4000000

#define DEN RB7

#define S1 RB0

#define S2 RB1

int N=0,CNN;

int chuc_dec,donvi_dec,chuc_hex,donvi_hex;

void tach_so(int CNN)

{

chuc_dec=CNN/10;

donvi_dec=CNN%10;

}

void dec_to_hex()

{

int i;

const unsigned char a[10]= {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; i=chuc_dec;

chuc_hex=a[i];

i=donvi_dec;

donvi_hex=a[i];

}

void quetled_7doan()

{

unsigned char a[2];

int mabandau,i;

a[1]=chuc_hex;

a[0]=donvi_hex;

mabandau = 0b00000001;

for (i=0;i<=1;i++)

{

PORTC = mabandau;

PORTD = a[i];

delay_ms(1);

PORTC = 0X00; //SAU KHI DELAY DE MAT NHIN THAY ROI XOA DE TAT,

//NEU KO XOA THI TIEP TUC CHUONG TRINH SE QUET QUA 7SEG KHAC NHUNG // CHUA DUA MANG VAO NEN LED 7SG THU 2 SE CO KI TU GIONG LED 7SEG THU1 mabandau = mabandau<<1;

}

}

void portb_init() {

TRISB=0X0F; PORTB=0X00; RBPU=0; }

void portc_init() {

TRISC=0X00; PORTC=0X00; }

void portd_init() {

TRISD=0X00; PORTD=0X00; }

void main(void) {

portb_init(); portc_init(); portd_init(); tach_so(CNN); dec_to_hex();

while(1) {tach_so(CNN); dec_to_hex();

quetled_7doan(); switch(N)

{

case 0:

if(!S1) //DI VAO {

//S1=1;

N=1;

}

if(!S2) //DI RA {

//S2=1;

N=5;

}

break;

case 1:

if(!S2)

{

// S2=1;

N=2;

}

if(S1)

{

// S1=0;

N=0;

}

break;

case 2:

if(S1)

{

// S1=0; N=3; }

if(S2) {

// S2=0; N=1; }

break; case 3:

if(S2) {

//S2=0; N=0; CNN++; DEN=1; }

if(!S1) {

// S1=0; N=2; }

break;

case 5:

if(!S1) {

// S1=1; N=6; }

if(S2) {

// S2=0; N=0; }

break; case 6: if(S2) {

// S2=0; N=7; }

if(S1) {

// S2=1; N=5; }

break; case 7:

if(S1) {

// S1=0; N=0;

CNN ; if(CNN==0) DEN=0; }

if(!S2) {

// S1=0; N=6; }

break; }

}

}