Comport4 CPort for delphi2010串口应用程序

comport4操作很简单

ComPort1.Open;//打开串口

ComPort1.close;//关闭串口

comport1.WriteStr('a');//发送字符a

ComPort1.ReadStr(Str,Count);//读取字符

使用comport4做串口调试程序

comport4的安装见：http://blog.csdn.net/yorkworlddream/article/details/17382039

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, CPort, CPortCtl, StdCtrls;

type
  TForm1 = class(TForm)
    ComPort1: TComPort;
    btnFs: TButton;
    Edit2: TEdit;
    Memo1: TMemo;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Memo2: TMemo;
    procedure FormCreate(Sender: TObject);
    procedure btnFsClick(Sender: TObject);
    procedure ComPRxChar(Sender: TObject; Count: Integer);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

{16进制字符串转换成字符串}
function HexStrToStr(const S:string):string;
//16进制字符串转换成字符串
var
  t:Integer;
  ts:string;
  M,Code:Integer;
begin
  t:=1;
  Result:='';
  while t<=Length(S) do
  begin
    while not (S[t] in ['0'..'9','A'..'F','a'..'f']) do
      inc(t);
    if (t+1>Length(S))or(not (S[t+1] in ['0'..'9','A'..'F','a'..'f'])) then
      ts:='$'+S[t]
    else
      ts:='$'+S[t]+S[t+1];
    Val(ts,M,Code);
    if Code=0 then
      Result:=Result+Chr(M);
    inc(t,2);
  end;
end;

{字符串转换成16进制字符串}
function StrToHexStr(const S:string):string;
//字符串转换成16进制字符串
var
  I:Integer;
begin
  for I:=1 to Length(S) do
  begin
    if I=1 then
      Result:=IntToHex(Ord(S[1]),2)
    else Result:=Result+' '+IntToHex(Ord(S[I]),2);
  end;
end;

//点击发送按钮
procedure TForm1.btnFsClick(Sender: TObject);
var
  Str: String;
begin
  comport1.WriteStr(Hexstrtostr(edit2.Text));//调用Hexstrtostr函数
end;

//初始化窗口
procedure TForm1.FormCreate(Sender: TObject);
begin
  ComPort1.Open;
end;

//相当于串口中断 （要与comport1的OnRxChar进行连接）
procedure TForm1.ComPRxChar(Sender: TObject; Count: Integer);
var
  Str: String;
begin
  ComPort1.ReadStr(Str, Count);
  memo1.Text:=StrToHexStr(Str);//显示成16进制形式
  memo2.Text:={StrToHexStr}(Str);//显示成字符串形式
end;



end.

注意：ComPort1.ComPRxChar要与comport1的OnRxChar进行连接

源文件下载地址：http://pan.baidu.com/s/1Dy1Us

其中35-72行的程序是为了

将输入的16进制的字符型数据转换成真实的16进制数

和

将16进制数，转成字符串进行显示用的程序

{16进制字符串转换成字符串}
function HexStrToStr(const S:string):string;
//16进制字符串转换成字符串
var
  t:Integer;
  ts:string;
  M,Code:Integer;
begin
  t:=1;
  Result:='';
  while t<=Length(S) do
  begin
    while not (S[t] in ['0'..'9','A'..'F','a'..'f']) do
      inc(t);
    if (t+1>Length(S))or(not (S[t+1] in ['0'..'9','A'..'F','a'..'f'])) then
      ts:='$'+S[t]
    else
      ts:='$'+S[t]+S[t+1];
    Val(ts,M,Code);
    if Code=0 then
      Result:=Result+Chr(M);
    inc(t,2);
  end;
end;

{字符串转换成16进制字符串}
function StrToHexStr(const S:string):string;
//字符串转换成16进制字符串
var
  I:Integer;
begin
  for I:=1 to Length(S) do
  begin
    if I=1 then
      Result:=IntToHex(Ord(S[1]),2)
    else Result:=Result+' '+IntToHex(Ord(S[I]),2);
  end;
end;