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MAIN.PAS
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MAIN.PAS
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{ ==================================================================
CHART - Digital Chart Recorder Program (c) J. Dempster 1996-2005
===================================================================
13/6/96 V1.2a ... Divide by zero on printing fixed }
{ 18/6/96 V1.3 .... Whole data file can now be printed
R-R interval option added }
{ 1/7/96 V1.3a .... Minor changes ... Main Form now sizes itself when opened }
{ 9/8/96 V1.4 .... Stimulator pulse width can be changed
Trace colours can be changed }
{ 26/9/96 V1.4a ... sampling interval limited to > 10msec
HR and RMS disabled when only one channel }
{ 27/9/96 V1.4b ... Gain marker now read correctly when gain reduced }
{ 2/10/96 V1.4c ... Marker list increased to 40, gain reduced to 30
Trap inserted to prevent execution of Timer routine
until it has completed }
{ 7/10/96 V1.5 ... Digital DC Offset removed, CEC 1902 real offset added }
{ 9/10/96 V1.6 ... Header block increased to 4096 bytes }
{ 18/11/96 V1.7 ... Header block increased 8192 bytes
New file/path names now tested for validity}
{ 24/4/97 V1.7a ... Support for Lab-PC 1200 added }
{ 24/7/97 V1.7b ... Program opens in centre of screen }
{ 19/1/98 V1.8 .... New File now tests for valid path
Program now exits by common CLOSE pathway
Heart rate detection threshold now deals with small numbers
correctly
NIDAQ.DLL now loaded dynamically }
{ 2/98 V1.8a ... DMA support disabled to avoid updating delays seen on
some computers }
{ 17/8/98 V2.0 ... Now compiles using 32 bit compiler }
{ 13/10/98 V2.1 ... Reads gain/filter lists from CED 1902 }
{ 15/10/98 V2.1a ... Format error on whole file printing fixed
Sampling interval limited to max. of 1 sec }
{ 26/7/99 V2.2 .... Stop-watch added }
{ 25/10/99 V2.3 ... Automatic setting of heart beat detection threshold added
Heart rate zero leve
Fetch t0 button added
Traces now limited to valid channel display area
1/11/99 V2.3a ... HR threshold now based on max. difference between
signal and running mean baseline
}
{ 11/11/99 V2.4 ... Now uses same lab. int. routines as WinWCP }
{ 20/9/00 V2.5 .... New file now creates file name automatically }
{ 7/2/01 V2.6 ..... Now uses SESLabIO component
Display width slider added
Much tidying up done }
{ 22/9/02 V2.7 .... Communications with CED 1902 via COM port now works under Windows NT/2000
Exception when no chart.ini exists fixed
Initialisation now chart.ini and stored in default data folder}
{18/11/02 V2.8 .... Compiled under delphi V7}
{7/1/03 V3.0 ...... 16 bit A/D cards now supported
Display routines revised
Slow sampling intervals now work correctly }
// 20.05.03 V4.0 .. Major update
// Now uses TScopedisplay component to display signals
// Full range of TSESLABIO hardware supported
// 28.05.03 V4.1 .. Bugs in chart markers fixed
// 18.08.03 V4.2 .. A/D voltage now set individuallyb for each channel
// 1.10.03 V4.3 ... Problem with setting AC coupling on 29xx s/n 1902s fixed (use1902.pas)
// Data files cannot be saved on floppy, network or CD drives
// 7.10.03 V4.4 ... Problems with setting of channel calibration factors fixed
// 23.10.03 V4.5 .. CED 1902 no longer updated when settings loaded
// 24.10.03 V4.6 .. Users can no longer erase files using File/New
// Open and save folders now stored separately
// 4.11.03 V4.6.1
// 4.09.04 V4.6.3 Save Data File As.. menu item added
// New Data File.. now adds index number to files
// 22.09.04 V4.6.4 Cursor readout now keeps up with data
// 24.09.04 V4.6.5 Calibration bug fixed
// 28.09.04 V4.6.6 Calibration bug really fixed
// Zero level can now be changed while recording
// 29.08.04 V4.6.7 Support for COM3 & COM4 ports added
// Now works with CED 1902 attached to USB COM port
// 01.10.04 V4.6.8 CED 1902 communication should now work after power on/off
// File create error when data folder missing fixed
// 21.07.05 V4.7.0 Support for M Series interface boards added
// Slider bar position now changes when Start Time changed
// Negative values can no longer be entered as Start Time
// 04.10.05 V4.8.0 Zoom In/Out X2 menus added
// Window size double/half buttons added
// Recent files menu added
// Initial data file name now has date in it.
// 14.11.05 V4.8.1 Stimulus pulse generation now works
// 10.08.06 V4.8.2 Now stores root directory correctly when used as storage folder
// CreateNewDataFile can no longer delete files.
// Data file no longer opened automatically when program started
// 18.09.06 V4.8.4 Referenced Single Ended (RSE) analog input option added
// SaveHeader not called when no file open
// 27.09.06 V4.8.5 LoadSettings now opens files read-only (to allow reading from RO folders)
// 15.10.06 V4.8.6 New Data File now automatically changes save directory back to c:\chart data
// if an invalid directory selected. Save File As no longer allows over-writing of
// existing file.
// 16.10.06 V4.8.7 ADCInputMode no longer loaded from settings file
// 30.9.07 V4.8.8 Vertical magnification now easier and buttons added to display
// Display window duration now stored in settings
// 04.10.07 V4.8.9 Secs/mins switch now works correctly during live recording
// 01.09.08 V4.9.0 Updated with new scope component. Now displays better chosen
// vertical axis ticks
// 07.12.11 V5.0
// 20.09.12 V5.0.1 Zero level no longer reverts to zero when Record pressed
// and is stored correctly in INI and .CHT files.
// Laboratory interface settings are stored in chart.INI, and saving of settings
// by SESLABIO component is disabled by SESLABIO.DoNotSaveSettings := True
// 28.09.12 V5.0.2 Display vertical magnification and position now retained when Record start/stopped.
// 18.01.13 V5.0.3 SaveHeader() ADCNumChannels written to header rather than SESLabIO.ADCNumChannels
// to prevent corruption of number of channels in file when file differs from setting
// in laboratory interface
// 23.07.13 V5.0.4 Warning message no longer produced when unsupported A/D input mode changed (NIDAQMXUnit.pas)
// Software timed stimulus output added for USB-6008/8 devices with time resolution of 50ms
// 26.08.13 V5.0.5 New file now requested when Record clicked ONLY when CED 1902 gain changed.
// 18.09.13 V5.0.6 .n.cht sequence number now autmatically added to file name when channel scaling changed.
// Channel scaling can now be changed without user opening a new file.
// DC offset facility on AO1 added
// ADCCalibrationValue now stored in settings file not .CHT file
// Units can now be set in calibration wizard
// Calibration value now retained in calibration wizard
// 23.09.13 V5.0.7 Settings now loaded again after lab. interface type set to ensure
// A/D voltage range set correctly. ADCMaxValue/ADCMinValue set to 15 bit range when record pressed
// CheckNewDataFileRequired now checks sampling interval
// 03.12.13 V5.0.8 Stimulator On and Off voltages can now be set
// 10.12.13 V5.0.9 Data files can now only be saved on system disk.
// 24.06.15 V5.1.0 Ported from Delphi & code.
// 18.12.15 V5.1.1 Input channels can now be remapped
// 02.07.18 V5.1.2 Calibration table resized to display all text
// 03.07.18 V5.1.3 Print & Copy Image: No. of channels in file, names and units now displayed correctly. Set to 10% calibration bars now works
unit Main;
interface
uses
SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
Forms, Dialogs, StdCtrls, ExtCtrls, Spin, Shared, Menus, Grids,
StimSet,About, ClipBrd, Table, Calib,
use1902, ComCtrls, ValEdit, SESLabIO, mmsystem, ValidatedEdit,
ScopeDisplay, math, DateUtils, strutils, windows,shellapi, vcl.htmlhelpviewer ;
const
StimDACChan = 0 ;
DCOffsetDACChan = 1 ;
NumDACChannels = 2 ;
MaxChannels = 8 ;
ChannelLimit = MaxChannels-1 ;
MaxDisplayScans = 2000 ;
ADCBufferSize = 4096*4 ;
DataFileExtension = '.cht' ;
SettingsFileExtension = '.set' ;
BAKFileExtension = '.bak' ;
MaxMarkers = 50 ;
MinDT = 0.001 ;
MaxDT = 10.0 ;
HeaderSize = 8192 ;
//DACdt = 0.002 ;
MinScansPerWriteBuf = 16 ;
NumWriteBufsMax = 32768 div 16 ;
type
// Display cursors record
TCursors = record
Base : Array[0..ChannelLimit] of Integer ;
C0 : Integer ;
C1 : Integer ;
end ;
// Circular write buffer control record
TWriteBufs = record
NumScans : Integer ; // Total number of scans all buffers
NumSamples : Integer ; // Total number of samples
NumBufs : Integer ; // No. of sub-buffers in circular buffer
NumScansPerBuf : Integer ; // No. of scans in sub-buffer
NumSamplesPerBuf : Integer ; // No. of samples on sub-buffer
NumBytesPerBuf : Integer ; // No. of bytes in sub-buffer
ActiveBuf : Integer ; // Index no. of sub-buffer currently filling
WriteBuf : Integer ; // Index no. of next sub-buffer to be written
BufStart : Array[0..NumWriteBufsMax-1] of Integer ; // Sub-buffer starting indexes (in ADC^)
BufEnd : Array[0..NumWriteBufsMax-1] of Integer ; // Sub-buffer end indexes (in ADC^)
NumScansPerBlock : Integer ; // No. of scans in display compression block
NumPointsPerBlock : Integer ; // No. display points per block
BlockCount : Integer ; // Compression block scan counter
DispPointer : Integer ; // Display buffer index
NumBlocksDisplayed : Integer ; // No. of blocks displayed
MaxBlocksDisplayed : Integer ; // Max. no. of blocks in display
OldestScan : Integer ; //
LatestScan : Integer ; // Index of latest available scan (ADC^)
EmptyPointer : Integer ; // Index of empty region (ADC^)
yMin : Array[0..ChannelLimit] of Integer ;
yMax : Array[0..ChannelLimit] of Integer ;
yMinAt : Array[0..ChannelLimit] of Integer ;
yMaxAt : Array[0..ChannelLimit] of Integer ;
end ;
// Stimulator control record
TStimulator = record
Running : Boolean ;
Delay : Single ;
GroupInterval : Single ;
PulseFrequency : Single ;
PulsesPerGroup : LongInt ;
PulseWidth : Single ;
PulseVOn : Single ;
PulseVOff : Single ;
RepeatPeriodmsec : LongInt ;
TimeForNextGroup : LongInt ;
NumDACPoints : LongInt ;
dtDAC : Single ;
end ;
// Printer/metafile properties record
TPageSettings = record
FontName : string ;
FontSize : LongInt ;
LineThickness : LongInt ;
ShowLines : boolean ;
MarkerSize : LongInt ;
ShowMarkers : boolean ;
LeftMargin : single ;
RightMargin : single ;
TopMargin : single ;
BottomMargin : single ;
MetafileWidth : Integer ;
MetafileHeight : Integer ;
WholeFile : Boolean ;
end ;
TRMS = record
InUse : Boolean ;
Buf : array[0..100] of LongInt ;
Pointer : LongInt ;
NumAverage : LongInt ;
Sum : Single ;
Scale : Single ;
FromChannel : LongInt ;
ToChannel : LongInt ;
yMax : Integer ;
yMin : Integer ;
end ;
THR = record
InUse : Boolean ;
BeatCounter : LongInt ;
DeadTime : LongInt ;
LoRateLimit : LongInt ;
Baseline : Integer ;
Threshold : LongInt ;
HeartRate : Integer ;
Scale : Single ;
MaxScale : Single ;
FromChannel : LongInt ;
ToChannel : LongInt ;
yMax : Integer ;
yMin : Integer ;
ECG : SmallInt ;
DisplayHR : Boolean ;
SetThreshold : Boolean ;
MaxLevel : SmallInt ;
ThresholdCounter : Integer ;
PercentageThreshold : single ;
end ;
// Digital low pass filter control record
TDigitalFilter = record
InUse : Boolean ;
FirstSample : Boolean ;
Factor : Single ;
y : Array[0..ChannelLimit] of SmallInt ;
end ;
TMainFrm = class(TForm)
Timer: TTimer;
MainMenu: TMainMenu;
mnFile: TMenuItem;
Exit1: TMenuItem;
N1: TMenuItem;
mnPrintSetup: TMenuItem;
mnPrint: TMenuItem;
mnOpen: TMenuItem;
mnNew: TMenuItem;
mnSetup: TMenuItem;
OpenDialog: TOpenDialog;
SaveDialog: TSaveDialog;
RecordGroup: TGroupBox;
bRecord: TButton;
bStop: TButton;
mnEdit: TMenuItem;
mnCopyData: TMenuItem;
mnHelp: TMenuItem;
About1: TMenuItem;
Contents1: TMenuItem;
GroupBox2: TGroupBox;
meCursor: TMemo;
PrinterSetupDialog: TPrinterSetupDialog;
MarkerGroup: TGroupBox;
edMarker: TEdit;
bMark: TButton;
bShowTable: TButton;
ZoomPopup: TPopupMenu;
mnCalibrate: TMenuItem;
StimGroup: TGroupBox;
bStimOnOff: TButton;
edIdentLine: TEdit;
Label5: TLabel;
mnView: TMenuItem;
mnZoomIn: TMenuItem;
mnZoomOutAll: TMenuItem;
lbTZero: TLabel;
edStimStatus: TEdit;
EdNumMarkers: TEdit;
TimerGrp: TGroupBox;
edTimer: TEdit;
bReset: TButton;
bStartTimer: TButton;
bStopTimer: TButton;
bGetTZero: TButton;
bResetHRMonitor: TButton;
N3: TMenuItem;
mnSetupRec: TMenuItem;
mnSetupCed: TMenuItem;
mnSetupSpec: TMenuItem;
mnStimulator: TMenuItem;
StatusBar: TStatusBar;
rbLiveMode: TRadioButton;
rbReplayMode: TRadioButton;
mnShowGrid: TMenuItem;
GroupBox1: TGroupBox;
rbTUnitsSeconds: TRadioButton;
rbTUnitsMinutes: TRadioButton;
mnCopyImage: TMenuItem;
bAddToTable: TButton;
N2: TMenuItem;
mnEditMarkers: TMenuItem;
N4: TMenuItem;
mnSaveSettings: TMenuItem;
mnLoadSettings: TMenuItem;
mnChan0: TMenuItem;
mnChan1: TMenuItem;
mnChan2: TMenuItem;
mnChan3: TMenuItem;
mnChan4: TMenuItem;
mnChan5: TMenuItem;
mnChan6: TMenuItem;
mnChan7: TMenuItem;
mnZoomIn0: TMenuItem;
mnZoomIn1: TMenuItem;
mnZoomIn2: TMenuItem;
mnZoomIn3: TMenuItem;
mnZoomIn4: TMenuItem;
mnZoomIn5: TMenuItem;
mnZoomIn6: TMenuItem;
mnZoomIn7: TMenuItem;
mnSaveAs: TMenuItem;
mnZoomOut: TMenuItem;
mnZoomOut0: TMenuItem;
mnZoomOut1: TMenuItem;
mnZoomOut2: TMenuItem;
mnZoomOut3: TMenuItem;
mnZoomOut4: TMenuItem;
mnZoomOut5: TMenuItem;
mnZoomOut6: TMenuItem;
mnZoomOut7: TMenuItem;
N5: TMenuItem;
mnRecentFile0: TMenuItem;
mnRecentFile1: TMenuItem;
mnRecentFile2: TMenuItem;
mnRecentFile3: TMenuItem;
TDisplayPanel: TPanel;
edTDisplay: TValidatedEdit;
bTDisplayDouble: TButton;
bTDisplayHalf: TButton;
lbTDisplay: TLabel;
edStartTime: TValidatedEdit;
lbStartTime: TLabel;
sbStartTime: TScrollBar;
scDisplay: TScopeDisplay;
mnLabInterface: TMenuItem;
mnSaveFile: TMenuItem;
SESLabIO: TSESLabIO;
mnSaveToASCIIDataFile: TMenuItem;
DCOffsetGrp: TGroupBox;
sbDCOffset: TScrollBar;
edDCOffset: TValidatedEdit;
procedure bRecordClick(Sender: TObject);
procedure TimerTimer(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure bStopClick(Sender: TObject);
procedure sbStartTimeChange(Sender: TObject);
procedure mnNewClick(Sender: TObject);
procedure mnOpenClick(Sender: TObject);
procedure FormResize(Sender: TObject);
procedure mnPrintClick(Sender: TObject);
procedure Exit1Click(Sender: TObject);
procedure mnPrintSetupClick(Sender: TObject);
procedure About1Click(Sender: TObject);
procedure bMarkClick(Sender: TObject);
procedure bShowTableClick(Sender: TObject);
procedure mnCalibrateClick(Sender: TObject);
procedure bStimOnOffClick(Sender: TObject);
procedure edIdentLineChange(Sender: TObject);
procedure Contents1Click(Sender: TObject);
procedure HowtoUseHelp1Click(Sender: TObject);
procedure SearchforHelpOn1Click(Sender: TObject);
procedure mnZoomInClick(Sender: TObject);
procedure mnZoomOutAllClick(Sender: TObject);
procedure bResetClick(Sender: TObject);
procedure bStartTimerClick(Sender: TObject);
procedure bStopTimerClick(Sender: TObject);
procedure bGetTZeroClick(Sender: TObject);
procedure bResetHRMonitorClick(Sender: TObject);
procedure edTDisplayKeyPress(Sender: TObject; var Key: Char);
procedure FormShow(Sender: TObject);
procedure mnSetupRecClick(Sender: TObject);
procedure mnSetupCedClick(Sender: TObject);
procedure mnSetupSpecClick(Sender: TObject);
procedure mnStimulatorClick(Sender: TObject);
procedure edStartTimeKeyPress(Sender: TObject; var Key: Char);
procedure mnShowGridClick(Sender: TObject);
procedure scDisplayCursorChange(Sender: TObject);
procedure rbTUnitsSecondsClick(Sender: TObject);
procedure rbLiveModeClick(Sender: TObject);
procedure rbReplayModeClick(Sender: TObject);
procedure rbTUnitsMinutesClick(Sender: TObject);
procedure mnCopyDataClick(Sender: TObject);
procedure mnCopyImageClick(Sender: TObject);
procedure bAddToTableClick(Sender: TObject);
procedure edMarkerKeyPress(Sender: TObject; var Key: Char);
procedure mnEditMarkersClick(Sender: TObject);
procedure mnLoadSettingsClick(Sender: TObject);
procedure mnSaveSettingsClick(Sender: TObject);
procedure mnZoomIn0Click(Sender: TObject);
procedure FormKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
procedure mnSaveAsClick(Sender: TObject);
procedure mnZoomOut0Click(Sender: TObject);
procedure mnRecentFile0Click(Sender: TObject);
procedure bTDisplayDoubleClick(Sender: TObject);
procedure bTDisplayHalfClick(Sender: TObject);
procedure mnLabInterfaceClick(Sender: TObject);
procedure mnSaveFileClick(Sender: TObject);
procedure mnSaveToASCIIDataFileClick(Sender: TObject);
procedure sbDCOffsetChange(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure edDCOffsetKeyPress(Sender: TObject; var Key: Char);
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
private
{ Private declarations }
RecordingInProgress : Boolean ; // Recording in progress flag
LiveMode : Boolean ; // Live display mode flag
TimerInProgress :Boolean ; // Timer processing in progress
ADC : PSmallIntArray ; // A/D data buffer pointer (scaled to 16 bit range)
ADCRaw : PSmallIntArray ; // A/D raw )unscaled) data buffer pointer
ADCScaleTo16Bit : Integer ; // Scaled A/D data to 16 bit range
DAC : PSmallIntArray ; // D/A data buffer pointer
DACPointer : Integer ; // D/A update pointer (non-waveform update)
NumDACPoints : Integer ; // No. of points in DAC
DACUpdateInterval : single ; // D/A update interval (s)
DACV : Array[0..NumDACChannels-1] of Single ;
DCOffsetScale : Single ; // DC offset slider -> V scale factor
DisplayBuf : TSmallIntArray ; // Data display buffer pointer
WriteBufs : TWriteBufs ; // Circular A/D data buffer control record
Emptyflag : Integer ; // Empty A/D sample buffer flag
SumProcTime : Integer ;
nProcTime : Integer ;
AbortOperation : Boolean ;
// Stop watch
StopWatchRunning : Boolean ; // Stop watch running flag
ElapsedTime : single ; //
ElapsedTimeStart : single ;
NextTimeDisplay : single ;
DACWaveformSupported : Boolean ; // TRUE = D/A waveform output supported
procedure EnableMenus( MenuState : Boolean ) ;
procedure ClearTempFile ;
function CreateIndexedFileName : String ;
procedure SaveHeader( FHandle : Integer ) ;
procedure GetHeader( FHandle : Integer ) ;
procedure Backup ;
procedure InitialiseHeartRate ;
procedure ComputeHeartRate( var Buf : Array of SmallInt ; ScanStart : Integer ) ;
procedure InitialiseRMS ;
procedure ComputeRMS( var Buf : Array of SmallInt ; ScanStart : Integer ) ;
procedure InitialiseDisplay ;
procedure StartADC ;
procedure DisplayFromFile ;
procedure DisplayLive( Initialise : Boolean ) ;
procedure SetControlsToRecordingMode( Enabled : Boolean ) ;
procedure SetControlsForLiveMode( Enabled : Boolean ) ;
procedure StartStimulator ;
procedure StopStimulator ;
public
{ Public declarations }
ProgName : String ; // Program name
VersionNum : string ; // Program version number
Cursors : TCursors ; // Display cursor record
MarkerList : TStringList ; // Chart markers list
LabInterfaceType : Integer ; // Laboratory interface type
DeviceNum : Integer ; // Laboratory interface device
ADCInputMode : Integer ; // A/D input mode
ADCNumChannels : Integer ;
ADCSamplingInterval : Single ;
ADCMaxValue : Integer ;
ADCMinValue : Integer ;
ADCChannelVoltageRange : Array[0..ChannelLimit] of Single ;
ADCChannelUnits : Array[0..ChannelLimit] of String ;
ADCChannelName : Array[0..ChannelLimit] of String ;
ADCChannelGain : Array[0..ChannelLimit] of Single ;
ADCChannelVoltsPerUnit : Array[0..ChannelLimit] of Single ;
ADCChannelScale : Array[0..ChannelLimit] of Single ;
ADCChannelZero : Array[0..ChannelLimit] of Integer ;
ADCChannelOffset : Array[0..ChannelLimit] of Integer ;
ADCChannelYMin : Array[0..ChannelLimit] of Single ;
ADCChannelYMax : Array[0..ChannelLimit] of Single ;
NewFileNeeded :Boolean ; // TRUE = Calibration changed, new file needed when recording
Stimulator : TStimulator ; // Stimulator control record
RMS : TRMS ;
HR : THR ;
MaxDACValue : Integer ; // Maximum D/A integer value
MinDACValue : Integer ; // Minimum D/A integer value
// Program settings
ChartDirectory : string ; // Default data/settings files directory
SaveDirectory : string ; // Current folder for recording data
// OpenDirectory : string ; // Folder containing last opened file
ProgDirectory : string ; // CHART Program folder
TempDataFileName : string ; // Temporary data file name
IniFileName : string ; // Initialisation file name
INIFileHandle : Integer ; // Initialisation file handle
//LaboratoryInterface : Integer ; // Laboratory interface type number
RecordingDisabled : Boolean ; // Recording disabled flag
RecentFiles : Array[0..3] of string ;
RecentFilesPointer : Integer ;
TZeroScan : Integer ; // Scan # defined as zero time
TScale : single ; // Time readout scaling factor
TUnits : string ; // Time readout units
Plot : TPageSettings ; // Printer/metafile page settings
TimeBarValue : Single ;
ADCCalibrationBar : array[0..ChannelLimit] of Single ;
ADCCalibrationValue : array[0..ChannelLimit] of Single ;
CursorValue : array[0..ChannelLimit] of Single ;
TimeZero : Single ;
//SamplingInterval : Single ;
CursorTime : Single ;
// Digital filter control record
DigitalFilter : TDigitalFilter ;
// Data file header variables
// --------------------------
SaveFileName : string ; // Name of file to save data to at end of experiment
FileSaveRequired : Boolean ; // TRUE = currently open file needs saved
FileHandle : integer ; // Handle to open (-1 = no file)
NumBytesInHeader : LongInt ; // No. of bytes in file header
NumSamplesInFile : LongInt ; // No. of A/D samples in file
IdentLine : string ; // File identification text
RMSInUse : Boolean ;
RMSFromChannel : LongInt ;
RMSToChannel : LongInt ;
RMSNumPoints : LongInt ;
HRInUse : Boolean ;
HRFromChannel : LongInt ;
HRToChannel : LongInt ;
BAKFileName : String ; // Backup file name
BackupEnabled : Boolean ; // Automatic backup enabled flag
BackupInterval : Single ; // Backup interval (s)
NextBackupTime : Single ; // System time for next backup (s)
procedure LoadSettingsFile( const IniFileName : string ;
LoadLabInterfaceSettings : Boolean );
procedure SaveSettingsFile( const IniFileName : string ;
SaveLabInterfaceSettings : Boolean );
procedure SetZoomPopupMenu ;
procedure SaveToDataFile( ToFileName : String ) ;
procedure SaveToASCIIDataFile( ToFileName : String ) ;
procedure LoadFromDataFile( FromFileName : String ) ;
procedure AddToRecentFilesList( FileName : String ) ;
function GetDirectory( FileName : String ) : String ;
procedure SetDCOffset ;
function CheckNewDataFileNeeded : Boolean ;
end;
var
MainFrm : TMainFrm ;
implementation
uses SetupRec, SetupCED, SetupSpec, PrintRec, EditMarkers ,
LabInterfaceSetup;
{$R *.DFM}
procedure TMainFrm.FormShow(Sender: TObject);
{ ------------------------------------
Initialisations when form is created
------------------------------------}
var
ch,i : Integer ;
TempBuf : Array[0..255] of char ;
SysDrive : String ;
ParamFileName,LocalHelpFile : String ;
Buf : PChar ;
begin
Top := 20 ;
Left := 20 ;
Width := Screen.Width - Left - 20 ;
Height := Screen.Height - Top - 50 ;
VersionNum := 'V5.1.3' ;
ProgName := 'Chart ' + VersionNum ;
Caption := ProgName ;
// Initialise with recording enabled
RecordingDisabled := False ;
FileSaveRequired := False ;
// Create buffers
MarkerList := TStringList.Create ;
edNumMarkers.text := format('%d',[MaxMarkers-MarkerList.Count]);
// Find/create save directory "<sysdrive>\Chart Data"
GetWindowsDirectory( TempBuf, High(TempBuf) ) ;
SYSDrive := ExtractFileDrive(String(TempBuf)) ;
ChartDirectory := SYSDrive + '\Chart Data' ;
if not DirectoryExists(ChartDirectory) then begin
if not CreateDir(ChartDirectory) then
RecordingDisabled := True ;
StatusBar.SimpleText := 'WARNING! Unable to create'
+ ChartDirectory
+ ' Recording disabled!' ;
end ;
// Temporary data file used to store live
Buf := AllocMem( 512 ) ;
GetTempFileName( PChar(ChartDirectory),PChar('CHA'),0,Buf ) ;
TempDataFileName := String(Buf) ;
FreeMem(Buf) ;
// Get directory which contains Chart program
ProgDirectory := ExtractFilePath(ParamStr(0)) ;
// Find help file (copy to \Chart Data if required)
// Note. Help file copied to local disk to avoid block on running .CHM files from network drives)
Application.HelpFile := ProgDirectory + 'chart.chm' ;
LocalHelpFile := ChartDirectory + '\chart.chm' ;
// if not FileExists(LocalHelpFile) then begin
CopyFile( PCHar(Application.HelpFile),PCHar(LocalHelpFile), false ) ;
// end ;
if FileExists(LocalHelpFile) then Application.HelpFile := LocalHelpFile ;
// Program initialisation file Chart.ini
// is stored in <sysdrive>\Chart Data
IniFileName := ChartDirectory + '\Chart.ini' ;
if DirectoryExists(ChartDirectory) then begin
SaveDirectory := ChartDirectory ;
end ;
LabInterfaceType := NoInterface16 ;
DeviceNum := 1 ;
ADCInputMode := imDifferential ;
SaveFileName := '' ;
FileHandle := -1 ;
NumBytesInHeader := HeaderSize ;
NumSamplesInFile := 0 ;
IdentLine := ' Put Name/Group/Experiment info. here ' ;
edTDisplay.Value := 100. ;
// Set low pass digital filter = 1.0 (disabled)
DigitalFilter.Factor := 1. ;
Stimulator.PulseFrequency := 10. ;
Stimulator.GroupInterval := 1. ;
Stimulator.PulsesPerGroup := 1 ;
Stimulator.PulseWidth := 0.002 ;
Stimulator.PulseVOn := 5.0 ;
Stimulator.PulseVOff := 0.0 ;
Stimulator.Running := False ;
ADCMaxValue := 32767 ;
ADCMinValue := -32768 ;
for ch := 0 to ChannelLimit do begin
ADCChannelVoltageRange[ch] := 10.0 ;
ADCChannelUnits[ch] := 'V';
ADCChannelName[ch] := format('Ch.%d',[ch]);
ADCChannelGain[ch] := 1.0 ;
ADCChannelVoltsPerUnit[ch] := 1.0 ;
ADCChannelScale[ch] := 1.0 ;
ADCChannelOffset[ch] := ch ;
ADCChannelZero[ch] := 0 ;
ADCChannelYMax[ch] := ADCMaxValue ;
ADCChannelYMin[ch] := ADCMinValue ;
end ;
{ Initial values for channel scaling factors }
TUnits := 's' ;
TScale := 1.0 ;
edStartTime.Scale := TSCale ;
edStartTime.Units := TUnits ;
//edStartTime.LoLimit := 0.0 ;
edTDisplay.Value := 100.0 ;
edTDisplay.Scale := TSCale ;
edTDisplay.Units := TUnits ;
if TUnits = 'm' then rbTUnitsMinutes.Checked := True
else rbTUnitsMinutes.Checked := False ;
rbTUnitsSeconds.Checked := not rbTUnitsMinutes.Checked ;
edStimStatus.text := ' OFF ' ;
for i := 0 to High(DACV) do DACV[i] := 0.0 ;
DACV[StimDACChan] := Stimulator.PulseVOff ;
{ Clear A/D voltage/gain settings table }
// Default RMS computed channel settings
RMS.InUse := False ;
RMS.FromChannel := 0 ;
RMS.ToChannel := 0 ;
RMS.NumAverage := 10 ;
// Default heart rate computed channel settings
HR.InUse := False ;
bResetHRMonitor.Enabled := False ;
HR.FromChannel := 0 ;
HR.ToChannel := 0 ;
HR.MaxScale := 200. ;
HR.PercentageThreshold := 50.0 ;
HR.DisplayHR := True ;
// CED 1902 default settings
CED1902.Input := 3 ;
CED1902.Gain := 1 ;
CED1902.GainValue := 1. ;
CED1902.InUse := False ;
CED1902.ComPort := 1 ;
CED1902.LPFilter := 0 ;
CED1902.HPFilter := 0 ;
CED1902.NotchFilter := 0 ;
CED1902.ACCoupled := 0 ;
// Printer page settings
Plot.FontName := 'Arial' ;
Plot.LeftMargin := 25.0 ; // mm
Plot.RightMargin := 80.0 ;
Plot.TopMargin := 25.0 ;
Plot.BottomMargin := 150.0 ;
Plot.LineThickness := 2 ;
Plot.FontSize := 10 ;
Plot.MetafileWidth := 600 ;
Plot.MetafileHeight := 400 ;
Plot.WholeFile := False ;
// Automatic data file backup
BackupEnabled := False ; // Automatic backup disabled
BackupInterval := 60.0 ; // Backup interval (s)
BAKFileName := '' ;
// Allocated A/D buffer
GetMem( ADC, ADCBufferSize*NumWriteBufsMax*MaxChannels ) ;
// Clear recent files list
for i := 0 to High(RecentFiles) do RecentFiles[i] := '' ;
// Determine whether a version of Chart is already running
// by trying to open C:\Chart Data\chart.ini file
// If another version is running, start chart with recording disabled
INIFileHandle := -1 ;
if FileExists(IniFileName) then begin
INIFileHandle := FileOpen( IniFileName, fmOpenWrite ) ;
if INIFileHandle < 0 then RecordingDisabled := True
else begin
// Close INI file to allow LoadSettings to open it
FileClose(INIFileHandle ) ;
// Load settings from ini file
// Note name of last open file returned in FileName
LoadSettingsFile( IniFileName, True ) ;
// Re-open file to prevent other instances of Chart accessing it
INIFileHandle := FileOpen( IniFileName, fmOpenWrite ) ;
end ;
end
else if DirectoryExists(ChartDirectory) then begin
// Open file to prevent other instances of Chart accessing it
SaveSettingsFile( IniFileName, True ) ;
INIFileHandle := FileOpen( IniFileName, fmOpenWrite ) ;
end ;
if not RecordingDisabled then begin
if SESLabIO.LabInterfaceType <> LabInterfaceType then SESLabIO.LabInterfaceType := LabInterfaceType ;
if SESLABIO.DeviceNumber <> DeviceNum then SESLABIO.DeviceNumber := DeviceNum ;
if SESLABIO.ADCInputMode <> ADCInputMode then SESLABIO.ADCInputMode := ADCInputMode ;
if (not SESLabIO.LabInterfaceAvailable) or (SESLabIO.LabInterfaceType = NoInterface12) or (SESLabIO.LabInterfaceType = NoInterface16) then begin
SESLabIO.LabInterfaceType := NIDAQMX ;
SESLABIO.DeviceNumber := 1 ;
SESLABIO.ADCInputMode := imDifferential ;
end ;
if not SESLabIO.LabInterfaceAvailable then begin
SESLabIO.LabInterfaceType := NationalInstruments ;
SESLABIO.DeviceNumber := 1 ;
SESLABIO.ADCInputMode := imDifferential ;
end ;
if not SESLabIO.LabInterfaceAvailable then begin
RecordingDisabled := True ;
StatusBar.SimpleText := 'WARNING! Laboratory interface hardware not available. Recording Disabled!' ;
end ;
// Read settings again to ensure A/D voltage range settings are accepted
if INIFileHandle >= 0 then begin
FileClose(INIFileHandle ) ;
LoadSettingsFile( IniFileName, True ) ;
INIFileHandle := FileOpen( IniFileName, fmOpenWrite ) ;
end ;
end
else begin
SESLABIO.LabInterfaceType := NoInterface16 ;
end ;
LabInterfaceType := SESLabIO.LabInterfaceType ;
DeviceNum := SESLABIO.DeviceNumber ;
ADCInputMode := SESLABIO.ADCInputMode ;
SESLabIO.DisableDMA_LabPC ;
SESLabIO.DoNotSaveSettings := True ; // Do not save settings in XML file
SESLabIO.GetADCBuffer( ADCRaw ) ;
SESLabIO.GetDACBuffer( DAC ) ;
EmptyFlag := SESLabIO.ADCEmptyFlag ;
if SESLabIO.ADCInputMode <> MainFrm.ADCInputMode then SESLabIO.ADCInputMode := MainFrm.ADCInputMode ;
// Fast DAC waveform generation not available for USB-6008 or USB-6009
if ANSIContainsText(SESLabIO.LabInterfaceModel,'6008') or
ANSIContainsText(SESLabIO.LabInterfaceModel,'6009') then begin
DACWaveformSupported := False ;
DACUpdateInterval := Timer.Interval*1E-3 ;
sbDCOffset.Max := 0 ;
end
else begin
DACWaveformSupported := True ;
DACUpdateInterval := 0.002 ;
sbDCOffset.Max := 32767 ;
end ;
DCOffsetScale := SESLabIO.DACVoltageRange[0]/Max(sbDCOffset.Max,-sbDCOffset.Min) ;
sbDCOffset.Position := Round(edDCOffset.Value/DCOffsetScale) ;
// Update DACs
if not RecordingDisabled then begin
DACV[StimDACChan] := Stimulator.PulseVOff ;
DACV[DCOffsetDACChan] := -(sbDCOffset.Position*DCOffsetScale) ;
SESLABIO.WriteDACS( DACV, 2 ) ;
end ;
// Disable options not available when recording disabled
bRecord.Enabled := not RecordingDisabled ;
bStop.Enabled := not RecordingDisabled ;
mnNew.Enabled := not RecordingDisabled ;
mnCalibrate.Enabled := not RecordingDisabled ;
// Open a data file if one has been supplied in parameter string }
ParamFileName := '' ;
for i := 1 to ParamCount do begin
if i > 1 then ParamFileName := ParamFileName + ' ' ;
ParamFileName := ParamFileName + ParamStr(i) ;
end ;
if ANSIContainsText( ExtractFileExt(ParamFileName),'.cht') then begin
// Load data file (if name available in parameter string)
LoadFromDataFile( ParamFileName ) ;
end
else begin
// Otherwise create new data file
SaveFileName := CreateIndexedFileName ;
ClearTempFile ;
end ;
Caption := 'File: ' + SaveFileName ;
{ Arrange various component groups on main form }
Resize ;
Timer.enabled := True ;
TimerInProgress := False ;
// Initialise stop watch
ElapsedTime := GetTickCount*0.001 ;
ElapsedTimeStart := ElapsedTime ;
NextTimeDisplay := 0.0 ;
StopWatchRunning := False ;
SetControlsToRecordingMode( False ) ;
LiveMode := False ;
SetControlsForLiveMode( LiveMode ) ;
RecordingInProgress := False ;
// Initialise display channel settings
InitialiseDisplay ;
// Display signals
edStartTime.Value := 0.0 ;
DisplayFromFile ;
StatusBar.SimpleText := format('Loaded: %.4g %s (%d Kb)',
[(NumSamplesInFile div scDisplay.NumChannels)*
ADCSamplingInterval*TScale,
TUnits,
NumSamplesInFile div 512]) ;
mnRecentFile0.Caption := RecentFiles[0] ;
mnRecentFile1.Caption := RecentFiles[1] ;
mnRecentFile2.Caption := RecentFiles[2] ;
mnRecentFile3.Caption := RecentFiles[3] ;
mnZoomOutAll.Click ;
end ;
procedure TMainFrm.InitialiseDisplay ;
{ ---------------------------
Initialise display settings
--------------------------- }
var
ch : Integer ;
begin
if FileHandle < 0 then Exit ;
{ Set up the number of channels/points in the 'scope display }
scDisplay.NumChannels := ADCNumChannels ;
scDisplay.MaxADCValue := ADCMaxValue ;
scDisplay.MinADCValue := ADCMinValue ;
for ch := 0 to scDisplay.NumChannels-1 do begin
scDisplay.ChanOffsets[ch] := ADCChannelOffset[ch] ;
scDisplay.ChanUnits[ch] := ADCChannelUnits[ch] ;
scDisplay.ChanName[ch] := ADCChannelName[ch] ;
scDisplay.ChanScale[ch] := ADCChannelScale[ch] ;
scDisplay.ChanZero[ch] := ADCChannelZero[ch] ;
scDisplay.yMin[ch] := ADCChannelYMin[ch] ;
scDisplay.yMax[ch] := ADCChannelYMax[ch] ;
scDisplay.ChanVisible[ch] := True ;
end ;
// Enable/disable display calibration grid
scDisplay.DisplayGrid := mnShowGrid.Checked ;
scDisplay.MaxPoints := MaxDisplayScans ;
//scDisplay.xMin := 0 ;
//scDisplay.xMax := scDisplay.MaxPoints - 1 ;
scDisplay.NumPoints := 0 ;
{ Create a set of zero level cursors }
scDisplay.ClearHorizontalCursors ;
for ch := 0 to scDisplay.NumChannels-1 do begin
Cursors.Base[ch] := scDisplay.AddHorizontalCursor(
ch,
clRed,
True,
'z' ) ;
scDisplay.HorizontalCursors[ch] := scDisplay.ChanZero[ch] ;
end ;
// Create and initialise vertical cursors (not in live mode)
scDisplay.ClearVerticalCursors ;
if not LiveMode then begin
Cursors.C0 := scDisplay.AddVerticalCursor(AllChannels,clGreen,'') ;
Cursors.C1 := scDisplay.AddVerticalCursor(AllChannels,clGreen,'') ;
scDisplay.VerticalCursors[Cursors.C0] := 0 ;
scDisplay.VerticalCursors[Cursors.C1] := scDisplay.MaxPoints div 2 ;
end ;
sbStartTime.Min := 0 ;
sbStartTime.Max := Max(NumSamplesInFile div scDisplay.NumChannels,1) ;
//edTDisplay.HiLimit := Max(NumSamplesInFile div NumChannels,1000)*dt ;
end ;
procedure TMainFrm.bRecordClick(Sender: TObject);
{ ---------------
Start recording
--------------- }
var
ch : Integer ;
begin
if ExtractFileDrive(ChartDirectory) <> ExtractFileDrive(SaveFileName) then begin