giao tiếp máy tính

[nguyenquoctoan]

nhờ các cao thủ xem dùm em,giao tiếp với pic18 cổng com như sau,sai chỗ nào,sao chương trình kô chạy
#include<18f4550.h>
#fuses NOWDT,PUT,HS,NOPROTECT
#device PIC184550*=16 ADC=10
#use delay(clock=4000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7)
#include<stdlib.h>
#include<lcd_lib_4bit.c>
#byte porta = 0x80
#byte portb = 0x81
#byte portc = 0x82
#byte porte = 0x84
char buffer[64],tam[5];
int i,j,j1;
float x5,x10,x15,x20;
int x1,x2,x3,x4,x6,x7,x8,x9,x11,x12,x13,x14,x16,x17,x1 8,x19;
int c=1;
int k=0;

void getvalue()
{
gets(buffer);
c=0;
k=1;
}


void main()
{
set_tris_b(0);
set_tris_e(0);
LCD_init();
delay_us(10);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"nhan du lieu");
LCD_putcmd(0xc0);
delay_us(10);
printf(LCD_putchar,"hien thi mang ?");
delay_ms(1000);
while (1)
{

if(c==1)
{
getvalue();
}
if(k==1)
{
LCD_putcmd(0x01);
delay_us(10);
LCD_putcmd(0xc0);
delay_us(10);
printf(LCD_putchar,"da ta ok");
delay_ms(500);
j=0;j1=0;

for (i=1;i<64;++i)
{
if (buffer[i]!="A") //nue khac a
{
tam[j]=buffer[i];
j=j+1;
}
else
{
//tam[j]='\0';
if (j1==0) x1=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x1:%u",x1);
delay_ms(1000);
if (j1==1) x2=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x2:%u",x2);
delay_ms(1000);
if (j1==2) x3=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x3:%u",x3);
delay_ms(2000);
if (j1==3) x4=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x4:%u",x4);
delay_ms(2000);
if (j1==4) x5=atof(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x5:%f",x5);
delay_ms(2000);
if (j1==5) x6=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x6:%u",x6);
delay_ms(2000);
if (j1==6) x7=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x7:%u",x7);
delay_ms(2000);
if (j1==7) x8=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x8:%u",x8);
delay_ms(2000);
if (j1==8) x9=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
printf(LCD_putchar,"x9:%u",x9);
delay_ms(2000);
if (j1==9) x10=atof(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x10:%f",x10);
delay_ms(2000);
if (j1==10) x11=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x11:%u",x11);
delay_ms(2000);
if (j1==11) x12=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x12:%u",x12);
delay_ms(2000);
if (j1==12) x13=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x13:%u",x13);
delay_ms(2000);
if (j1==13) x14=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x14:%u",x14);
delay_ms(2000);
if (j1==14) x15=atof(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x15:%f",x15);
delay_ms(2000);
if (j1==15) x16=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x16:%u",x16);
delay_ms(2000);
if (j1==16) x17=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x17:%u",x17);
delay_ms(2000);
if (j1==17) x18=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x18:%u",x18);
delay_ms(2000);
if (j1==18) x19=atol(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x19:%u",x19);
delay_ms(2000);
if (j1==19) x20=atof(tam);
LCD_putcmd(0x01);
LCD_putcmd(0x80);
delay_us(10);
printf(LCD_putchar,"x20:%f",x20);
delay_ms(2000);
if (j1==20) break; //j1 xac dinh so chuoi
j1=j1+1;
j=0;
}

}

}

}
}
em đã test với mạch thật mà kô nhận được dữ liệu,...hic hic?