[daigiax92]

Em đang làm đồ án về gửi 1 chuỗi kí tự từ máy tính thông qua chương trình giao diện c# về pic để hiện thị trên Led-Matrix
đây là code chương trình của em:
/////////////////////////////////////////////////////////////////////////////////////////////////
#include <16f877a.h>
#device 16f877a*=16 ADC=10
#include <stdlib.h>
#include <string.h>
#fuses nowdt,noprotect,nolvp,hs,put
#use delay(clock=20000000)
#use fast_io(b)
#use fast_io(c)
#use fast_io(d)
#use rs232(baud=9600,parity=N,xmit=pin_c6,rcv=pin_c7)
#byte porta=0x05
#byte portb=0x06
#byte portc=0x07
#byte portd=0x08
#bit b0=portb.0
#bit b1=portb.1
#bit b2=portb.2
#bit b3=portb.3
#bit b4=portb.4
#bit b5=portb.5

int dich_chu=0,toc_do_chay=0;
void lay_font(char * textptr);
unsigned char bi,temp,chieu_dai=0;
unsigned char hien_thi[96];
const BYTE TEXT[51][5] ={0x00, 0x00, 0x00, 0x00, 0x00, // SPACE
0x00, 0x00, 0x5F, 0x00, 0x00, // !
0x00, 0x03, 0x00, 0x03, 0x00, // "
0x14, 0x3E, 0x14, 0x3E, 0x14, // #
0x24, 0x2A, 0x7F, 0x2A, 0x12, // $
0x43, 0x33, 0x08, 0x66, 0x61, // %
0x36, 0x49, 0x55, 0x22, 0x50, // &
0x00, 0x05, 0x03, 0x00, 0x00, // '
0x00, 0x1C, 0x22, 0x41, 0x00, // (
0x00, 0x41, 0x22, 0x1C, 0x00, // )
0x14, 0x08, 0x3E, 0x08, 0x14, // *
0x08, 0x08, 0x3E, 0x08, 0x08, // +
0x00, 0x50, 0x30, 0x00, 0x00, // ,
0x08, 0x08, 0x08, 0x08, 0x08, // -
0x00, 0x60, 0x60, 0x00, 0x00, // .
0x20, 0x10, 0x08, 0x04, 0x02, // /
0x3E, 0x51, 0x49, 0x45, 0x3E, // 0
0x04, 0x02, 0x7F, 0x00, 0x00, // 1
0x42, 0x61, 0x51, 0x49, 0x46, // 2
0x22, 0x41, 0x49, 0x49, 0x36, // 3
0x18, 0x14, 0x12, 0x7F, 0x10, // 4
0x27, 0x45, 0x45, 0x45, 0x39, // 5
0x3E, 0x49, 0x49, 0x49, 0x32, // 6
0x01, 0x01, 0x71, 0x09, 0x07, // 7
0x36, 0x49, 0x49, 0x49, 0x36, // 8
0x26, 0x49, 0x49, 0x49, 0x3E, // 9
0x00, 0x36, 0x36, 0x00, 0x00, // :
0x00, 0x56, 0x36, 0x00, 0x00, // ;
0x08, 0x14, 0x22, 0x41, 0x00, // <
0x14, 0x14, 0x14, 0x14, 0x14, // =
0x00, 0x41, 0x22, 0x14, 0x08, // >
0x02, 0x01, 0x51, 0x09, 0x06, // ?
0x3E, 0x41, 0x59, 0x55, 0x5E, // @
0x7E, 0x09, 0x09, 0x09, 0x7E, // A
0x7F, 0x49, 0x49, 0x49, 0x36, // B
0x3E, 0x41, 0x41, 0x41, 0x22, // C
0x7F, 0x41, 0x41, 0x41, 0x3E, // D
0x7F, 0x49, 0x49, 0x49, 0x41, // E
0x7F, 0x09, 0x09, 0x09, 0x01, // F
0x3E, 0x41, 0x41, 0x49, 0x3A, // G
0x7F, 0x08, 0x08, 0x08, 0x7F, // H
0x00, 0x41, 0x7F, 0x41, 0x00, // I
0x30, 0x40, 0x40, 0x40, 0x3F, // J
0x7F, 0x08, 0x14, 0x22, 0x41, // K
0x7F, 0x40, 0x40, 0x40, 0x40, // L
0x7F, 0x02, 0x0C, 0x02, 0x7F, // M
0x7F, 0x02, 0x04, 0x08, 0x7F, // N
0x3E, 0x41, 0x41, 0x41, 0x3E, // O
0x7F, 0x09, 0x09, 0x09, 0x06, // P
0x1E, 0x21, 0x21, 0x21, 0x5E, // Q
0x7F, 0x09, 0x09, 0x09, 0x76};// R

const BYTE TEXT2[44][5]={0x26, 0x49, 0x49, 0x49, 0x32, // S
0x01, 0x01, 0x7F, 0x01, 0x01, // T
0x3F, 0x40, 0x40, 0x40, 0x3F, // U
0x1F, 0x20, 0x40, 0x20, 0x1F, // V
0x7F, 0x20, 0x10, 0x20, 0x7F, // W
0x41, 0x22, 0x1C, 0x22, 0x41, // X
0x07, 0x08, 0x70, 0x08, 0x07, // Y
0x61, 0x51, 0x49, 0x45, 0x43, // Z
0x00, 0x7F, 0x41, 0x00, 0x00, // [
0x02, 0x04, 0x08, 0x10, 0x20, // \
0x00, 0x00, 0x41, 0x7F, 0x00, // ]
0x04, 0x02, 0x01, 0x02, 0x04, // ^
0x40, 0x40, 0x40, 0x40, 0x40, // _
0x00, 0x01, 0x02, 0x04, 0x00, // `
0x20, 0x54, 0x54, 0x54, 0x78, // a
0x7F, 0x44, 0x44, 0x44, 0x38, // b
0x38, 0x44, 0x44, 0x44, 0x44, // c
0x38, 0x44, 0x44, 0x44, 0x7F, // d
0x38, 0x54, 0x54, 0x54, 0x18, // e
0x04, 0x04, 0x7E, 0x05, 0x05, // f
0x08, 0x54, 0x54, 0x54, 0x3C, // g
0x7F, 0x08, 0x04, 0x04, 0x78, // h
0x00, 0x44, 0x7D, 0x40, 0x00, // i
0x20, 0x40, 0x44, 0x3D, 0x00, // j
0x7F, 0x10, 0x28, 0x44, 0x00, // k
0x00, 0x41, 0x7F, 0x40, 0x00, // l
0x7C, 0x04, 0x78, 0x04, 0x78, // m
0x7C, 0x08, 0x04, 0x04, 0x78, // n
0x38, 0x44, 0x44, 0x44, 0x38, // o
0x7C, 0x14, 0x14, 0x14, 0x08, // p
0x08, 0x14, 0x14, 0x14, 0x7C, // q
0x00, 0x7C, 0x08, 0x04, 0x04, // r
0x48, 0x54, 0x54, 0x54, 0x20, // s
0x04, 0x04, 0x3F, 0x44, 0x44, // t
0x3C, 0x40, 0x40, 0x20, 0x7C, // u
0x1C, 0x20, 0x40, 0x20, 0x1C, // v
0x3C, 0x40, 0x30, 0x40, 0x3C, // w
0x44, 0x28, 0x10, 0x28, 0x44, // x
0x0C, 0x50, 0x50, 0x50, 0x3C, // y
0x44, 0x64, 0x54, 0x4C, 0x44, // z
0x00, 0x08, 0x36, 0x41, 0x41, // {
0x00, 0x00, 0x7F, 0x00, 0x00, // |
0x41, 0x41, 0x36, 0x08, 0x00, // }
0x02, 0x01, 0x02, 0x04, 0x02};// ~

int8 i,m;
int8 n;
void dich(void);
void xuat(unsigned char bi);
void xoa_hien_thi();
#INT_RDA
void ngat()
{
char str[20];
gets(str);
set_tris_b(0b00000000);
xoa_hien_thi();//xóa vùng nho hien thi truoc
lay_font(str); // Write character set to matrix
for(dich_chu=0;dich_chu<=63;dich_chu++)
{
for(toc_do_chay=0;toc_do_chay<=2;toc_do_chay++)
{
b1=1;
b0=1;

b2=1;
b0=0;
b2=0;

for(m=0;m<=32;m++)
{
n=hien_thi[m+dich_chu];

n=~n;
xuat(n);
delay_us(1000);

dich();
}
}
}
printf("%s\r",str);

}
void main()
{
enable_interrupts(INT_RDA);
enable_interrupts(global);

while(1);

}


void dich()
{
b1=0;
b0=1;
b0=0;
b2=1;
b2=0;
}
void xuat(unsigned char temp)
{
#bit flag_bit = temp.7
b4=0;
for(i=0;i<=7;i++)
{
if(flag_bit==1)
{b4=1;}
else
{b4=0;}
b3=1;
b3=0;
temp<<=1;
}
b5=1;
b5=0;
}
void lay_font(char * textptr)
{
int i, j;//
BYTE pixelData[5]; // Stores character data

for(i=0; textptr[i] != '\0'; ++i ) // Loop through the passed string
{
if(textptr[i] == '#')//textptr khai bao vi tri con tro
break;
if(textptr[i] < 'S') //ky tu nam o mang text
memcpy(pixelData, TEXT[textptr[i]-' '], 5);//copy 5 byte gia tri text[textptr[i]-'' vao pixeldata
else if(textptr[i] <= '~') // ky tu nam o mang text2
memcpy(pixelData, TEXT2[textptr[i]-'S'], 5);//copy 5 byte gia tri text2[textptr[i]-'s' vao pixeldata
else
memcpy(pixelData, TEXT[0], 5); // khoang trang
for(j=0;j<=4;j++)
{
hien_thi[chieu_dai]=(pixelData[j]);//hien thi tung ky tu
chieu_dai++;

}

}
}
void xoa_hien_thi(void)
{
chieu_dai=0;
for(m=0;m<=96;m++)
{
hien_thi[m]=0x00;
}
}
//////////////////////////////////////////////////////////////////////

Các bác xem đoạn lệnh này chắc em viết sai :3
//////////////////////////////////////////
#INT_RDA
void ngat()
{
char str[20];
gets(str);
set_tris_b(0b00000000);
xoa_hien_thi();//xóa vùng nho hien thi truoc
lay_font(str); // Write character set to matrix
for(dich_chu=0;dich_chu<=63;dich_chu++)
{
for(toc_do_chay=0;toc_do_chay<=2;toc_do_chay++)
{
b1=1;
b0=1;

b2=1;
b0=0;
b2=0;

for(m=0;m<=32;m++)
{
n=hien_thi[m+dich_chu];

n=~n;
xuat(n);
delay_us(1000);

dich();
}
}
}
printf("%s\r",str);

}
void main()
{
enable_interrupts(INT_RDA);
enable_interrupts(global);

while(1);

}
////////////////////////////////////////////

Còn đây là code C#
////////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.IO.Ports;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Doan
{
public partial class Form1 : Form
{
private SerialPort serPort;
public Form1()
{
InitializeComponent();
serPort = new SerialPort();
serPort.PortName = "COM8";
serPort.DataBits = 8;
serPort.Parity = Parity.None;
serPort.StopBits = StopBits.One;
}



private void Form1_Load(object sender, EventArgs e)
{
try
{
serPort.Open();
}
catch (Exception ex)
{
Debug.WriteLine("Error:" + ex.ToString());
}
}
private void button1_Click(object sender, EventArgs e)
{
if (serPort.IsOpen)
{
string str = txtchu.Text;
serPort.Write(str);
}
}
}
}
///////////////////////////////////////

Dưới đây là hình ảnh để các bác dễ nhìn
Cám ơn các bác rất nhiều