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' Excel Macro for the PicoLog 1000 series
' Pico Technology 2009

Declare Function pl1000OpenUnit Lib "pl1000.dll" (ByRef handle As Integer) As Long
Declare Function pl1000CloseUnit Lib "pl1000.dll" (ByVal handle As Integer) As Long
Declare Function pl1000GetUnitInfo Lib "pl1000.dll" (ByVal handle As Integer, ByVal S As String, ByVal lth As Integer, ByRef requiredSize As Integer, ByVal info As Integer) As Integer
Declare Function pl1000SetTrigger Lib "pl1000.dll" (ByVal handle As Integer, ByVal enabled As Integer, ByVal enable_auto As Integer, ByVal auto_ms As Integer, ByVal channel As Integer, ByVal dir As Integer, ByVal threshold As Integer, ByVal hysterisis As Integer, ByVal delay As Single) As Integer
Declare Function pl1000SetInterval Lib "pl1000.dll" (ByVal handle As Integer, ByRef us_for_block As Long, ByVal ideal_no_of_samples As Long, channels As Integer, ByVal No_of_channels As Integer) As Long
Declare Function pl1000GetValues Lib "pl1000.dll" (ByVal handle As Integer, ByRef values As Integer, ByRef no_of_values As Long, ByRef overflow As Integer, ByRef triggerIndex As Long) As Long
Declare Function pl1000Run Lib "pl1000.dll" (ByVal handle As Integer, ByVal no_of_values As Long, ByVal method As Integer) As Integer
Declare Function pl1000Ready Lib "pl1000.dll" (ByVal handle As Integer, ByRef ready As Integer) As Long
Declare Function pl1000MaxValue Lib "pl1000.dll" (ByVal handle As Integer, ByRef maxValue As Integer) As Long

Dim status As Long
Dim handle As Integer
Dim values(200) As Integer
Dim channels(22) As Integer
Dim nValues As Long
Dim ok As Integer
Dim ready As Integer
Dim requiredSize As Integer
Dim S As String * 255
Public port As Integer
Public product As Integer
Dim maxValue As Integer

Function adc_to_mv(value As Integer) As Integer
  adc_to_mv = value / maxValue * 2500
End Function

Sub GetPl1000()

' Open device
   status = pl1000OpenUnit(handle)
   opened = handle <> 0
    
If opened Then

  'Get the maximum ADC value for this variant
  status = pl1000MaxValue(handle, maxValue)

' Get the unit information
  Cells(9, "p").value = "Unit opened"
  SLegnth = pl1000GetUnitInfo(handle, S, 255, requiredSize, 3)
  Cells(10, "P").value = S
  SLegnth = pl1000GetUnitInfo(handle, S, 255, requiredSize, 4)
  Cells(11, "P").value = S
  SLegnth = pl1000GetUnitInfo(handle, S, 255, requiredSize, 1)
  Cells(12, "P").value = S
  
  ' No Trigger
  Call pl1000SetTrigger(handle, False, 0, 0, 0, 0, 0, 0, 0)

  ' Say that we want to take [W3] readings in [W4] s
  ' from channels 1 and 2
    
    'Set number of samples to read
    Dim samplenum As Integer
    samplenum = Worksheets("Sheet1").Range("W3").value 'Reads number of samples from W3

    nValues = samplenum
    channels(0) = 1
    channels(1) = 2
    channels(2) = 3
    channels(3) = 4
    channels(4) = 5
    channels(5) = 6
    channels(6) = 7
    channels(7) = 8
    channels(8) = 9
    
    
    'Set test length
    Dim sampleInterval As Long
    Dim microsecs_for_block As Long
    
    Dim testlength As Integer
    testlength = Worksheets("Sheet1").Range("$w$4").value
    microsecs_for_block = testlength * 1000000
    status = pl1000SetInterval(handle, microsecs_for_block, nValues, channels(0), 2)''
        
    status = pl1000Run(handle, nValues, 0)
    
    ready = 0
    Do While ready = 0
        status = pl1000Ready(handle, ready)
    Loop

  ' Get a block of 100 readings...
  ' we can call this routine repeatedly
  ' to get more blocks with the same settings
  Dim triggerIndex As Long
  Dim overflow As Integer
  status = pl1000GetValues(handle, values(0), nValues, overflow, triggerIndex)
  
  ' Copy the data into the spreadsheet
  For i = 0 To nValues - 1
     Cells(i + 4, "A").value = adc_to_mv(values(2 * i))
     Cells(i + 4, "B").value = adc_to_mv(values(2 * i + 1)) '''
     Cells(i + 4, "C").value = adc_to_mv(values(2 * i + 2))
     Cells(i + 4, "D").value = adc_to_mv(values(2 * i + 3))
     Cells(i + 4, "E").value = adc_to_mv(values(2 * i + 4))
  Next i

  ' Close the unit when finished to drop the driver
  Call pl1000CloseUnit(handle)
  
Else
   MsgBox "Unable to open device", vbCritical
End If
  
End Sub