ABF Files from Clampex 10.2 and Igor

#pragma rtGlobals=1     // Use modern global access method.
Menu "Macros" 
    Submenu "ABF Loaders" 
        "Load Clampex Data - Direct ABF", LoadClampex()
        "Load ClampFit Data - Modified ABF", LoadClampFit()
    End
End
 
 
// ABF Loaders
Function LoadClampex()
//integer files: (output from Clampex >v10.0.2)
GBLoadWave/O/Q/B/V/N=wave/T={16,2}/Y={0, 1/32.768}/S=6144/W=2
//byte order = low first
//bytes header = 6144
//input = 16bit int
//output = single float
//scale = 1/32.768
End Function
 
Function LoadClampFit()
//float files: (after clampfit >v10 modify)
GBLoadWave/O/Q/B/V/N=wave/T={2,2}/Y={0, 1}/S=(32*112)/W=2
//header = 3584
//byte order = low
//input = single float
//output = single float
//scale = 1
End Function
 
Function LoadSectionABF(samplerateKhz,startseconds,endseconds)
Variable sampleratekHz,startseconds,endseconds
SampleRateKHz = (SampleRateKHz *1000)
Variable startsecondsinms = 6144+(samplerateKHz*startseconds)
Variable endsecondsinms = 6144+(samplerateKHz*endseconds)
GBLoadWave/O/Q/B/V/N=wave/T={16,2}/Y={0, 1/32.768}/S=(startsecondsinms)/W=2/U=(endsecondsinms)
Make/O/N=(numpnts(wave0)) timescale
timescale = (startsecondsinms+(p/(samplerateKHz)))
Rename wave0, Current
Rename wave1, Potential
Display Current vs timescale
End Function

GBLoadWave/O/Q/B/V/N=HEADERFILE/T={32+64,32+64}/Y={0, 1}/S=(0)/W=1 
 
number_of_episodes = HEADERFILE0[3]
number_of_channels = HEADERFILE0[25]
DataStart = (HEADERFILE0[59])*512 
 
 
 
Here's the description of the abf file header, from ProtocolStructs.hpp
 
<pre><code class="language-igor">
struct ABF_FileInfo
{
   UINT  uFileSignature;
   UINT  uFileVersionNumber;
 
   // After this point there is no need to be the same as the ABF 1 equivalent.
   UINT  uFileInfoSize;
 
   UINT  uActualEpisodes;
   UINT  uFileStartDate;
   UINT  uFileStartTimeMS;
   UINT  uStopwatchTime;
   short nFileType;
   short nDataFormat;
   short nSimultaneousScan;
   short nCRCEnable;
   UINT  uFileCRC;
   GUID  FileGUID;
   UINT  uCreatorVersion;
   UINT  uCreatorNameIndex;
   UINT  uModifierVersion;
   UINT  uModifierNameIndex;
   UINT  uProtocolPathIndex;   
 
   // New sections in ABF 2 - protocol stuff ...
   ABF_Section ProtocolSection;           // the protocol
   ABF_Section ADCSection;                // one for each ADC channel
   ABF_Section DACSection;                // one for each DAC channel
   ABF_Section EpochSection;              // one for each epoch
   ABF_Section ADCPerDACSection;          // one for each ADC for each DAC
   ABF_Section EpochPerDACSection;        // one for each epoch for each DAC
   ABF_Section UserListSection;           // one for each user list
   ABF_Section StatsRegionSection;        // one for each stats region
   ABF_Section MathSection;
   ABF_Section StringsSection;
 
   // ABF 1 sections ...
   ABF_Section DataSection;            // Data
   ABF_Section TagSection;             // Tags
   ABF_Section ScopeSection;           // Scope config
   ABF_Section DeltaSection;           // Deltas
   ABF_Section VoiceTagSection;        // Voice Tags
   ABF_Section SynchArraySection;      // Synch Array
   ABF_Section AnnotationSection;      // Annotations
   ABF_Section StatsSection;           // Stats config
 
etc...
 
where an ABS_section is defined as:
<pre><code class="language-igor">
struct ABF_Section
{
   UINT     uBlockIndex;            // ABF block number of the first entry
   UINT     uBytes;                 // size in bytes of of each entry
   LONGLONG llNumEntries;           // number of entries in this section
 
   ABF_Section();
   long GetNumEntries();
   void Set( const UINT p_uBlockIndex, const UINT p_uBytes, const LONGLONG p_llNumEntries );
 
};
/<pre><code class="language-igor">