#include "16f877.h"
#include "def_877a.h"
#fuses XT,NOWDT,NOPROTECT,NOLVP
#use delay(clock=4000000)
#use fast_io(b)
#use fast_io(d)
#define RS RD0
#define RW RD1
#define E RD2
#define LCD PORTB //LCD duoc dieu khien qua PORTB
int i=0;
const unsigned char key[]="LCD VA PIC16F877";
void comwrt(void) //ghi lenh ra LCD
{
RS=0;
RW=0;
E=1;
E=0;
delay_ms(1);
}
void datawrt(void) //ghi data ra LCD
{
RS=1;
RW=0;
E=1;
E=0;
delay_ms(1);
}
void initLCD(void) //Khoi tao gia tri dau cho LCD
{
LCD=0x38;
comwrt();
LCD=0x0C;
comwrt();
LCD=0x06;
comwrt();
delay_ms(1);
}
void LCD_count() //dem thoi gian 15s cho cac den xanh-Do
{i=0;
While(i<=16)
{
LCD=key[i];
datawrt();
i=i+1;
delay_ms(1000); //xuat lan luot 2 ki tu ra LCD
}
}
void main(void)
{
While(1)
{ int j=0;
set_tris_B(0);
PORTB=0;
set_tris_D(0);
PORTD=0;
initLCD(); //khoi tao LCD
LCD_count();
delay_ms(1000);
While(j<=16)
{
LCD=0b00011100;
comwrt();
delay_ms(1000);
j=j+1;
}
LCD=0x01;
comwrt();
delay_ms(1000);
}
}
#include <16f877a.h>
#include <def_877a.h>
#device *=16 ADC=8
#FUSES NOWDT, HS, NOPUT, NOPROTECT, NODEBUG, NOBROWNOUT, NOLVP, NOCPD, NOWRT
#use delay(clock=4000000)
//=============================================================================
//==========PHAN KHAI BAO PHAN CUNG===========================================
//----------------------------------------------------------------------------
#define rs rb5
#define rw rb6
#define e rb7
//----------------------------------------------------------------------------
//=====PHAN KHAI BAO BIEN=====================================================
//-----------------------------------------------------------------------------
int8 i,j;
//-----------------------------------------------------------------------------
//----------------KHAI BAO MANG------------------------------------------------
const unsigned char chu[]={"PICVIETNAM!"};
const unsigned char move[]={"DHBK TPHCM"};
//-----------------------------------------------------------------------------
//===============================================================================
//=========================CHUONG TRINH CON======================================
//===============================================================================
void dieukhien(int8 a)
{
portc=a,
rs=0;
rw=0;
e=1;
e=0;
delay_ms(100);
}
void hienthi(int8 a)
{
portc=a;
rs=1;
rw=0;
e=1;
e=0;
delay_ms(100);
}
void lcd_init()
{
dieukhien(0x38);
dieukhien(0x0c);
dieukhien(0x06);
}
//--------------------------------------------------------------------------------------------------------------------------------
//============================================================================
//========================CHUONG TRINH CHINH===================================
void main()
{
trisb=0x00;
trisc=0x00;
portb=0x00;
portc=0x00;
delay_ms(100);
lcd_init();
While(1)
{
j=0x80;
while(j<=0x8f)
{
dieukhien(j);
while(i<=10)
{
hienthi(chu[i]);
i++;
}
j++;
i=0;
dieukhien(0xc2);
while(i<=10)
{
hienthi(move[i]);
i++;
}
i=0;
delay_ms(1000);
dieukhien(0x01);
}
}
}
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