delphi 串口与多线程.docx

1、delphi 串口与多线程unit Unit1;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ComCtrls, TeEngine, Series, ExtCtrls, TeeProcs, Chart, OleCtrls, MSCommLib_TLB;type TForm1 = class(TForm) tbshtSignalChart: TPageControl; tbshtDebug: TTabSheet; /串口调试 r

2、chdtSerialIn: TRichEdit; /串口发送的数据 cmbbxSerialIn: TComboBox; /串口号 Label7: TLabel; btRecStart: TButton; /开始接受 btRecStop: TButton; /停止 cmbbxBaudIn: TComboBox; Label8: TLabel; Label9: TLabel; Label10: TLabel; Label11: TLabel; btRecSave: TButton; /保存 cmbbxTypeIn: TComboBox; cmbbxSerialOut: TComboBox; /串口

3、端号 Label13: TLabel; cmbbxBaudOut: TComboBox; /波特率 rchdtSerialOut: TRichEdit; /输入发送 btSendOut: TButton; dtCode1: TEdit; lbCode1: TLabel; lbCode2: TLabel; dtCode3: TEdit; cmbbxTypeOut: TComboBox; /发送数据的格式 Label16: TLabel; Label51: TLabel; tmrSerialIn: TTimer; MSCommOut: TMSComm; MSCommIn: TMSComm; dtC

4、ode2: TEdit; dtCode4: TEdit; lbCode3: TLabel; lbCode4: TLabel; ImgTrace: TImage; Label17: TLabel; Label18: TLabel; Label19: TLabel; Label20: TLabel; Label21: TLabel; Label22: TLabel; Label23: TLabel; Label24: TLabel; Label25: TLabel; Label26: TLabel; lbShowAd0: TLabel; lbShowAd1: TLabel; lbShowAd4:

5、TLabel; lbShowAd5: TLabel; lbShowAd2: TLabel; lbShowGps5: TLabel; lbShowGps1: TLabel; lbShowAd7: TLabel; lbShowAd6: TLabel; lbShowAd3: TLabel; Label37: TLabel; lbShowGps6: TLabel; lbShowGps4: TLabel; Label53: TLabel; Label54: TLabel; Label55: TLabel; lbShowGps0: TLabel; btSaveTrace: TButton; btLoadT

6、race: TButton; btSaveData: TButton; Label1: TLabel; lbShowModel: TLabel; Label3: TLabel; Label4: TLabel; Label5: TLabel; Label6: TLabel; Label14: TLabel; Label15: TLabel; Label39: TLabel; Label40: TLabel; lbShowPara0: TLabel; lbShowPara1: TLabel; lbShowPara2: TLabel; lbShowPara3: TLabel; lbShowPara4

7、: TLabel; lbShowPara5: TLabel; lbShowPara6: TLabel; lbShowPara7: TLabel; Label49: TLabel; lbShowGps2: TLabel; Label57: TLabel; lbShowGps3: TLabel; Label59: TLabel; cmbbxModel: TComboBox; btSetModel: TButton; cmbbxParaNo: TComboBox; Label38: TLabel; Label60: TLabel; Label61: TLabel; dtParaValue: TEdi

8、t; btADInit: TButton; btSetPara: TButton; Label62: TLabel; rdgrpDataCode: TRadioGroup; dlgSaveData: TSaveDialog; dlgLoadTrace: TOpenDialog; dlgSaveTrace: TSaveDialog; rchdtTmp: TRichEdit; Label2: TLabel; TabSheet1: TTabSheet; chrtAcc: TChart; chrtGyro: TChart; srsGyroY: TFastLineSeries; srsGyroX: TF

9、astLineSeries; srsGyroZ: TFastLineSeries; srsAcc1: TFastLineSeries; srsAcc2: TFastLineSeries; chrtHeight: TChart; srsHeight: TFastLineSeries; Label12: TLabel; btCharClear: TButton; tbshtSignal: TTabSheet; procedure FormCreate(Sender: TObject); procedure btRecStartClick(Sender: TObject); procedure bt

10、RecStopClick(Sender: TObject); procedure btRecSaveClick(Sender: TObject); procedure btSendOutClick(Sender: TObject); procedure tmrSerialInTimer(Sender: TObject); procedure btSetModelClick(Sender: TObject); procedure btSetParaClick(Sender: TObject); procedure FormDestroy(Sender: TObject); procedure b

11、tSaveTraceClick(Sender: TObject); procedure btLoadTraceClick(Sender: TObject); procedure btADInitClick(Sender: TObject); procedure btSaveDataClick(Sender: TObject); procedure btCharClearClick(Sender: TObject); procedure dtCode1Change(Sender: TObject); procedure dtCode2Change(Sender: TObject); proced

12、ure dtCode3Change(Sender: TObject); procedure dtCode4Change(Sender: TObject); private Private declarations public Public declarations InitADDataFlag:Boolean; end; /串口接受线程 TSerialInThread =class(TThread) private SerialInput:Variant; /保存该线程从串口获取得到的数据矩阵不同类型的值赋 Seriallength : integer; /该线程需要处理的数据的个数 Ser

13、ialStr:String; /用于保存处理后数据的字符串变量 protected procedure Execute; override; /需要重载 procedure GetData; /从串口获取数据的过程 procedure TransToStr; /转换为适合显示的字符串的过程 procedure PostData ; /显示在用户界面的过程 end; / 串口发送线程 TSerialOutThread =class(TThread) private DataOrCode:Boolean; /是否要求输出指令，False表明输出数据 SerialOutput:String; /发送

14、数据时的数据矩阵 Seriallength : integer; /发送数据时，数据长度 tmpVar:Variant; /发送指令时的数据矩阵 CheckOk:Boolean; /用户确定的数据或是指令是否有错误 protected procedure Execute; override; /需要重载 procedure GetData; /从用户界面获取需要输出的数据或是指令代码 procedure PackData; /根据协议打包数据 procedure PackCode; /根据协议打包指令 procedure PostData; /发送给串口控件，实现数据的发送 end;var F

15、orm1: TForm1;implementation$R *.dfmconst GpsDataCountMax : integer = 20; /GPS数据包中数据的个数 ParaDataCountMax: integer = 9; /参数数据包中数据的个数 ADDataCountMax:integer =16; /传感器数据包中数据的个数var 实现线程互斥的句柄。 hMutex:THandle =0; /串口接受数据的线程使用的互斥句柄 声明一个全局的互斥量句柄变量 hMutex2:THandle =0; /串口发送数据的线程使用的互斥句柄 用于指令上下传的全局变量 ReceiveCha

16、rFlag:Boolean; /是否以字符接受串口，False表示以数据接受 ParaDataFlag:Boolean; /正在截取参数数据包的标志 GPSDataFlag:Boolean; /正在截取GPS数据包的标志 ADDataFlag:Boolean; /正在截取传感器数据包的标志 ParaNewDataFlag:Boolean; /截取完参数的标志 GPSNewDataFlag:Boolean; /截取完GPS数据包的标志 ADNewDataFlag:Boolean; /截取完传感器数据包的标志 ParaDataCount:Integer; /截取参数数据包的计数器 ADDataCo

17、unt:Integer; /截取传感器数据包的计数器 GpsDataCount:Integer; /截取GPS数据包的计数器 DownStr:String; /用于保存串口下传的所有数据 GpsStr:String; /保存GPS数据包的数据 ADStr:String; /保存传感器数据包的数据 ParaDataArray:array0.8 of Byte; /接受参数数据包的数组 GpsDataArray:array0.19 of Byte; /接受GPS数据包的数组 ADDataArray:array0.15 of Byte; /接受传感器数据包的数组 ADDataDblArray:arr

18、ay0.7 of double; /传感器实际的采样值 ADDataArrayMean:array0.13 of Byte; /保存传感器静态均值的数组。 /不考虑系统电压。 ParaStrArray:array0.3 of String; /显示参数数据的字符串数组 GpsStrArray:array0.6 of String; /显示GPS数据的字符串数组 ADStrArray:array0.7 of String; /显示传感器的字符串数组 用于指令上下传的全局变量 CodeOutStr:array1.4 of String; /当前上传的指令代码 CodeInStr:array0.3

19、of String; /下传返回的指令代码 用于绘图的全局变量 gpsMeta: TMetaFile; /用于保存轨迹图像的对象 posXArray,posYArray: array of double; /保存当前飞行轨迹点的数组 posXArrayLoad,posYArrayLoad: array of double; /保存载入的轨迹点的数组 posLength: Integer; /当前飞行轨迹点的总数 posLengthLoad: Integer; /当前飞行轨迹点的总数 函数hex()是将0f字符转换为015的整数。 function hex(c:String):Integer ;

20、 var x:integer; begin if (c=0) or (c= ) then x:=0 else if c=1 then x:=1 else if c = 2 then x:=2 else if c=3 then x:=3 else if c=4 then x:=4 else if c=5 then x:=5 else if c=6 then x:=6 else if c=7 then x:=7 else if c=8 then x:=8 else if c=9 then x:=9 else if (c=a) or (c=A) then x:=10 else if (c=b) or

21、 (c=B) then x:=11 else if (c=c) or (c=C) then x:=12 else if (c=d) or (c=D) then x:=13 else if (c=e) or (c=E) then x:=14 else if (c=f) or (c=F) then x:=15 else x:=-1; Result:=x; end; function HexToInt(S:String): Integer; var tmpInt1,tmpInt2:Integer ; begin if Length(S)=1 then begin Result:=hex(S1); e

22、nd else if Length(S)=2 then begin tmpInt1:=hex(S1); tmpInt2:=hex(S2); if (tmpInt1=-1) or (tmpInt2=-1) then Result:=-1 else Result:= tmpInt1*16+tmpInt2; end else Result:=-1; end; function GetMaxValue(x,y,x1,y1: Array of Double;len,len1: Integer): double;var i: Integer;begin result := 0; for i:=0 to l

23、en-1 do begin if abs(xi)result then result := abs(xi); if abs(yi) result then result := abs(yi); end; for i:=0 to len1-1 do begin if abs(x1i)result then result := abs(x1i); if abs(y1i) result then result := abs(y1i); end;end;/ 绘制飞行轨迹的函数 红色轨迹是载入的， 蓝色的轨迹是当前轨迹点 1. posXArray，posYArray 是当前轨迹点的坐标， posLeng

24、th是当前轨迹点的个数 2. posXArrayLoad，posYArrayLoad 是载入的轨迹点的坐标， posLengthLoad是载入的轨迹点的个数 procedure DrawAxis;var i,x,y,wid,h: Integer; pstep,ratio,maxV : double; can: TMetaFileCanvas;begin can := TMetaFileCanvas.Create(gpsMeta,0); /建立一个画布对象 gpsMeta.Width := Form1.ImgTrace.Width; /确定画布对应图像的大小 gpsMeta.Height :=

25、Form1.ImgTrace.Height; wid := gpsMeta.Width; h := gpsMeta.Height; 确定直角坐标的最大值，取10,100,200,500,1000,2000,5000,10000,50000,100000 的最小值 缺省状态取 100 maxV := GetMaxValue(posXArray,posYArray,posXArrayLoad,posYArrayLoad,posLength,posLengthLoad); if maxV = 0 then maxV := 100; if maxV = 10 then begin maxV := 10

26、; end else if maxV = 100 then begin maxV := 100; end else if maxV = 200 then maxV := 200 else if maxV= 500 then maxV := 500 else if maxV = 1000 then begin maxV := 1000; end else if maxV= 2000 then maxV := 2000 else if maxV= 5000 then maxV := 5000 else if maxV = 10000 then begin maxV := 10000; end else if maxV= 50000 then maxV := 50000 else if maxV 0 then begin can.Pen.Color := clRed;