unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  ComCtrls, Buttons, StdCtrls, ExtCtrls, AIOUSB;

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    Label9: TLabel;
    Label10: TLabel;
    Label11: TLabel;
    Label12: TLabel;
    Label13: TLabel;
    Label14: TLabel;
    Label15: TLabel;
    Label16: TLabel;
    Label17: TLabel;
    Label18: TLabel;
    Label19: TLabel;
    Label20: TLabel;
    Label21: TLabel;
    counterPanel0: TPanel;
    counterPanel1: TPanel;
    counterPanel2: TPanel;
    counterPanel3: TPanel;
    counterPanel4: TPanel;
    counterPanel5: TPanel;
    counterPanel6: TPanel;
    counterPanel7: TPanel;
    counterPanel8: TPanel;
    counterPanel9: TPanel;
    counterPanel10: TPanel;
    counterPanel11: TPanel;
    counterPanel12: TPanel;
    counterPanel13: TPanel;
    counterPanel14: TPanel;
    readTimer: TTimer;
    GroupBox1: TGroupBox;
    Label6: TLabel;
    FreqOutButtonA: TSpeedButton;
    FreqOutButtonB: TSpeedButton;
    FreqOutButtonC: TSpeedButton;
    FreqOutButtonD: TSpeedButton;
    FreqOutButtonE: TSpeedButton;
    Label22: TLabel;
    FreqOutTrackA: TTrackBar;
    FreqOutTrackB: TTrackBar;
    FreqOutTrackC: TTrackBar;
    FreqOutTrackD: TTrackBar;
    FreqOutTrackE: TTrackBar;
    Button1: TButton;
    Label23: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FreqOutTrackAChange(Sender: TObject);
    procedure FreqOutButtonAClick(Sender: TObject);
    procedure readTimerTimer(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;



var
  Form1: TForm1;

implementation

uses
DetectUnit;

{$R *.DFM}

var

  DeviceIndex : DWORD;
  FreqOutTrack : array [0..4] of TTrackBar;
  FreqOutButton : array [0..4] of TSpeedButton;
  counterPanels : array [0..14] of TPanel;
  DIOData : DWORD;
  DoUpdate : bool;


//---------------------------------------------------------------------------

function  FormatFreq(Freq : double) : AnsiString;
begin
  if (Freq >= 1000000) then FormatFreq :=  Format('%.2f', [Freq / 1000000]) + 'MHz'
  else if (Freq >= 10000) then FormatFreq :=  Format('%.1f', [Freq / 1000]) + 'KHz'
  else if (Freq >= 1000)  then FormatFreq :=  Format('%.2f', [Freq / 1000]) + 'KHz'
  else if (Freq >= 10)    then FormatFreq :=  Format('%.1f', [Freq]) + 'Hz'
  else if (Freq >= 1)     then FormatFreq :=  Format('%.2f', [Freq]) + 'Hz'
  else                    FormatFreq := Format('%f', [Freq]) + 'Hz';
end;


procedure TForm1.FormCreate(Sender: TObject);
var
  DetectForm : TDetectForm;
  OutMask : Byte;
  status : DWORD;
  PID: LongWord;

begin
  DeviceIndex := diOnly;


  Status := QueryDeviceInfo(DeviceIndex, @PID, nil, nil, nil, nil);

  if (Status <> ERROR_SUCCESS) or (PID <> $8020) then begin
    DetectForm := TDetectForm.Create(self);
    if DetectForm.ShowModal = mrOk then begin
      DeviceIndex := DetectForm.DeviceIndex;
      DetectForm.Free();
    end
    else begin
      DetectForm.Free();
      Application.Terminate();
      exit;
    end;
  end;

  DIO_Configure(DeviceIndex, False, @OutMask, @DIOData);




  FreqOutTrack[0] := FreqOutTrackA;
  FreqOutTrack[1] := FreqOutTrackB;
  FreqOutTrack[2] := FreqOutTrackC;
  FreqOutTrack[3] := FreqOutTrackD;
  FreqOutTrack[4] := FreqOutTrackE;
  FreqOutButton[0] := FreqOutButtonA;
  FreqOutButton[1] := FreqOutButtonB;
  FreqOutButton[2] := FreqOutButtonC;
  FreqOutButton[3] := FreqOutButtonD;
  FreqOutButton[4] := FreqOutButtonE;

  counterPanels[0] := counterPanel0;
  counterPanels[1] := counterPanel1;
  counterPanels[2] := counterPanel2;
  counterPanels[3] := counterPanel3;
  counterPanels[4] := counterPanel4;
  counterPanels[5] := counterPanel5;
  counterPanels[6] := counterPanel6;
  counterPanels[7] := counterPanel7;
  counterPanels[8] := counterPanel8;
  counterPanels[9] := counterPanel9;
  counterPanels[10] := counterPanel10;
  counterPanels[11] := counterPanel11;
  counterPanels[12] := counterPanel12;
  counterPanels[13] := counterPanel13;
  counterPanels[14] := counterPanel14;

  DoUpdate := True;
  readTimer.Enabled := true;
end;


//---------------------------------------------------------------------------
procedure TForm1.FreqOutTrackAChange(Sender: TObject);
var
I : integer;
CounterValue : Word;
bar : TTrackBar;

begin

  bar := Sender as TTrackBar;

  I := bar.Tag;
  CounterValue := ($FFFF - FreqOutTrack[I].Position);
  FreqOutButton[I].Caption := 'Output ' + FormatFreq(10000000 / (CounterValue * CounterValue));
  if FreqOutButton[I].Down = true then
  begin
    CTR_8254ModeLoad(DeviceIndex, I, 1, 2, CounterValue);
    CTR_8254ModeLoad(DeviceIndex, I, 2, 3, CounterValue);
  end;

end;

//---------------------------------------------------------------------------
procedure TForm1.FreqOutButtonAClick(Sender: TObject);
var
I : Integer;
counterValue : DWORD;
button : TSpeedButton;

begin

  button := sender as TSpeedButton;

  I := button.Tag;

  if (FreqOutButton[I].Down) then
  begin
    CounterValue := ($FFFF - FreqOutTrack[I].Position);
    CTR_8254ModeLoad(DeviceIndex, I, 1, 2, CounterValue);
    CTR_8254ModeLoad(DeviceIndex, I, 2, 3, CounterValue);
  end
  else
  begin
    CTR_8254Mode(DeviceIndex, I, 1, 2);
    CTR_8254Mode(DeviceIndex, I, 2, 3);
  end;
end;

//---------------------------------------------------------------------------





//---------------------------------------------------------------------------


procedure TForm1.readTimerTimer(Sender: TObject);
var
  Values: array[0..14] of Word;
  Ctr: Integer;

begin
  CTR_8254ReadAll(DeviceIndex, @Values[0]);
  for Ctr := 0 to 14 do
    CounterPanels[Ctr].Caption := IntToHex(Values[Ctr], 4)
  ;
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  i: integer;
begin
  for I := 0 to 4 do begin
    CTR_8254ModeLoad(DeviceIndex, I, 0, 2, 0);
    CTR_8254ModeLoad(DeviceIndex, I, 1, 2, 0);
    CTR_8254ModeLoad(DeviceIndex, I, 2, 3, 0);
  end;
end;

end.