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[phapdp]

#include <16F877A.h>
#include <def_877a.h>
#FUSES NOWDT, HS, NOPUT, NOPROTECT, NODEBUG, NOBROWNOUT, NOLVP, NOCPD, NOWRT
#use delay(clock=4000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bi ts=8)
#include <font_ascii.c>

//===================Dinh nghia cac chan cho ket noi 74595================
#bit data = 0x05.1
#bit clk = 0x05.2
#bit latch = 0x05.0
#bit tt = 0x05.3

//=====================khai bao bien toan cuc==============================
int8 buff_disp[33];
int8 max_char;
int8 time=5;
int8 count=0;
int is = 0;
char dt[65];
//======================KHAI BAO CAC CHUONH TRINH CON======================
void send_2_595(int8 temp);
void display();
void copy_2_ram1(int8 index_char);
void copy_2_ram2(int8 index_char);
void luudata();
//================================================== =======================
#INT_RDA
Receive_isr()
{
char c;
c = getc();
putc(c);
if(c==2) { count =0; is =1; };
else
{
if(c==3)
{
is = 0; max_char = count+5; luudata();
}
else
{
if(is==1 && count<60) { dt[count] = c; count++;
}
}
}
//================================================== ============================
void luudata()
{
int i;
for(i=0;i<max_char-5;++i)
write_eeprom(i,dt[i]);
write_eeprom(i,32); write_eeprom(i+1,32); write_eeprom(i+2,32); write_eeprom(i+3,32); write_eeprom(i+4,32); write_eeprom(i+5,32); write_eeprom(i+6,32);
write_eeprom(0xff,max_char);
}
//===========Chuong trinh chinh============================================= ====
void main() {
int8 i,j;
enable_interrupts(int_rda); //thiet lap ngat noi tiep
enable_interrupts(GLOBAL); // thiet lap ngat toan cuc
//================================================== ============================
TRISA=0x00; // Thiet lap chan vao ra
TRISB=0x00;
delay_ms(10);


//================================================== ===========================
max_char = read_eeprom(0xff);
//==============Bat dau hoat dong chuong trinh chinh===========================


while(1)
{
for (i=0;i<=32;i++)
buff_disp[i]=0xff;
for (i=0;i<=max_char;i++)
{
j=read_eeprom(i)-32;
if (j<=51)
copy_2_ram1(j);
else
{
j=j-51;
copy_2_ram2(j);
}
}
}
}
//==========================END MAIN =========================================

// ====================== CAC CHUONG TRINH CON ===============================
//=======Gui du lieu theo duong noi tiep toi 595==============================
void send_2_595(int8 temp) {

int8 i;
clk=0;
for(i=0;i<32;i++)
{
if(i==temp)
data=0;
else data=1;
clk=1;
clk=0;
}

}
//=====================Chuong trinh con hien thi===============================
void display() {
int8 count;
int8 i;

for (i=0;i<=time;i++) //Toc do chu chay thay doi boi bien time
{

for(count=32;count>0;count--)
{
send_2_595(count-1);
PORTB = 0x00;
latch=1;
latch=0;
PORTB = buff_disp[count];
delay_us(20);
}
}
}

//========================Copy to Ram1=======================================
void copy_2_ram1(int8 index_char)
{
int8 i,j;

for (j=0;j<=5;j++)
{
for (i=32;i>0;i--)
buff_disp[i]= buff_disp[i-1];
buff_disp[0]=font[index_char].b[j];
display();
}
buff_disp[0]=0xff;
}
//==========================Copy to Ram 2=====================================
void copy_2_ram2(int8 index_char) {

int8 i,j;

for (j=0;j<=5;j++)
{
for (i=32;i>0;i--)
buff_disp[i]= buff_disp[i-1];
buff_disp[0]=font2[index_char].b[j];
display();
}
buff_disp[0]=0xff;
}