VB.NET을 이용한 계측기 프로그래밍

Dim conn As New IO.Ports.SerialPort("COM4", 115200)
conn.Open()

conn.WriteLine("*IDN?")
Dim response As String = conn.ReadLine()
Console.WriteLine(response)

Dim client As New Net.Sockets.TcpClient("192.168.0.86", 50505)
Dim stream As Net.Sockets.NetworkStream = client.GetStream()
Dim writer As New IO.StreamWriter(stream)
Dim reader As New IO.StreamReader(stream)
writer.AutoFlush = True

writer.WriteLine("*IDN?")
Dim response As String = reader.ReadLine()
Console.WriteLine(response)

Imports Ivi.Visa

Dim rm As IResourceManager = GlobalResourceManager.Instance
Dim session As IMessageBasedSession = CType(rm.Open("GPIB0::12::INSTR"), IMessageBasedSession)

' Subsequent sending and receiving of commands over IEEE-488 GPIB connection:
session.FormattedIO.WriteLine("*IDN?")
Dim response As String = session.FormattedIO.ReadLine()
Console.WriteLine(response)

Imports System.Net.Sockets
Imports System.IO
Imports System.Threading

Module Program
    Sub Main()
        ' Create a TCP/IP client and connect to the instrument
        Dim client As New TcpClient("192.168.0.86", 50505)
        Dim stream As NetworkStream = client.GetStream()
        Dim writer As New StreamWriter(stream)
        Dim reader As New StreamReader(stream)
        writer.AutoFlush = True

        ' Send SCPI command requesting the product to identify itself
        writer.WriteLine("*IDN?")
        ' Receive the product's response and display it in the console
        Dim response As String = reader.ReadLine()
        Console.WriteLine(response)

        ' Configure the MagnaDC for local control
        writer.WriteLine("CONF:SOUR 0")
        ' Set the DC output current to 0 A before enabling DC output
        writer.WriteLine("CURR 0")
        ' Enable the MagnaDC power supply output
        writer.WriteLine("OUTP:START")
        ' Set the DC output current to 5 A
        writer.WriteLine("CURR 5")

        ' Wait 20 seconds
        Thread.Sleep(20000)

        ' Disable the DC output
        writer.WriteLine("OUTP:STOP")

        ' Close the communication channel to the product
        writer.Close()
        reader.Close()
        client.Close()
    End Sub
End Module

Imports System.IO.Ports
Imports System.Threading

Module Program
    Sub Main()
        ' Create a serial connection object with default baud rate for MagnaLOADs
        Dim conn As New SerialPort("COM4", 115200)
        conn.Open()

        ' Send SCPI command requesting the product to identify itself
        conn.WriteLine("*IDN?")
        ' Receive the product's response and display it in the console
        Dim response As String = conn.ReadLine()
        Console.WriteLine(response)

        ' Create an array of current set points
        Dim currSetPoints() As Integer = {50, 100, 150, 250}

        ' Configure the MagnaDC power supply for local control
        conn.WriteLine("CONF:SOUR 0")
        ' Enable the MagnaDC power supply output
        conn.WriteLine("OUTP:START")

        ' Loop through each current set point
        For Each currSetpoint In currSetPoints
            Console.WriteLine($"Setting Current to {currSetpoint} A")
            conn.WriteLine($"CURR {currSetpoint}")
            Thread.Sleep(20000) ' Wait 20 seconds
        Next

        ' Disable the MagnaDC power supply output
        conn.WriteLine("OUTP:STOP")
        ' Close the communication channel to the product
        conn.Close()
    End Sub
End Module

Imports System.IO.Ports
Imports System.Threading
Imports System.IO
Imports System.Windows.Forms.DataVisualization.Charting

Public Class Form1
    Private conn As SerialPort
    Private outputSamples As New List(Of OutputSample)()

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        ' Initialize the serial connection with the default baud rate for xGen products
        conn = New SerialPort("COM8", 115200)
        conn.Open()

        ' Configure the MagnaDC for local control
        conn.WriteLine("CONF:SOUR 0")
        ' Enable the MagnaDC power supply output
        conn.WriteLine("OUTP:START")

        ' Read the CSV file containing current set points and durations
        Dim inputSamples As List(Of InputSample) = ReadCsvFile("example_profile.csv")

        ' Record the start time
        Dim testStartTime As DateTime = DateTime.Now

        ' Loop through each input sample
        For Each sample In inputSamples
            ' Set the current set point
            conn.WriteLine($"CURR {sample.CurrentSetPoint}")
            ' Calculate the stop time
            Dim stopTime As DateTime = DateTime.Now.AddSeconds(sample.Duration)

            ' Collect measurements until the stop time
            While DateTime.Now < stopTime
                ' Request measurements from the device
                conn.WriteLine("MEAS:ALL?")
                ' Read the response
                Dim response As String = conn.ReadLine()
                Dim measurements() As String = response.Split(","c)

                ' Parse and store the measurements
                If measurements.Length >= 3 Then
                    Dim curr As Double = Double.Parse(measurements(0))
                    Dim volt As Double = Double.Parse(measurements(1))
                    Dim timeElapsed As Double = (DateTime.Now - testStartTime).TotalSeconds
                    outputSamples.Add(New OutputSample With {
                        .Current = curr,
                        .Voltage = volt,
                        .Time = timeElapsed
                    })
                End If
                Thread.Sleep(500) ' Wait for 0.5 seconds
            End While
        Next

        ' Disable the MagnaDC power supply output
        conn.WriteLine("OUTP:STOP")
        ' Close the communication channel to the product
        conn.Close()

        ' Plot the data
        PlotData()
    End Sub

    Private Function ReadCsvFile(filePath As String) As List(Of InputSample)
        Dim samples As New List(Of InputSample)()
        Using reader As New StreamReader(filePath)
            ' Skip the header line
            reader.ReadLine()
            While Not reader.EndOfStream
                Dim line As String = reader.ReadLine()
                Dim values() As String = line.Split(","c)
                If values.Length >= 2 Then
                    samples.Add(New InputSample With {
                        .CurrentSetPoint = Double.Parse(values(0)),
                        .Duration = Double.Parse(values(1))
                    })
                End If
            End While
        End Using
        Return samples
    End Function

    Private Sub PlotData()
        ' Configure the chart control
        Chart1.Series.Clear()
        Chart1.ChartAreas.Clear()
        Chart1.ChartAreas.Add(New ChartArea("MainArea"))

        ' Create series for current and voltage
        Dim currentSeries As New Series("Current")
        currentSeries.ChartType = SeriesChartType.Line
        currentSeries.XValueType = ChartValueType.Double
        currentSeries.YValueType = ChartValueType.Double

        Dim voltageSeries As New Series("Voltage")
        voltageSeries.ChartType = SeriesChartType.Line
        voltageSeries.XValueType = ChartValueType.Double
        voltageSeries.YValueType = ChartValueType.Double

        ' Add data points to the series
        For Each sample In outputSamples
            currentSeries.Points.AddXY(sample.Time, sample.Current)
            voltageSeries.Points.AddXY(sample.Time, sample.Voltage)
        Next

        ' Add series to the chart
        Chart1.Series.Add(currentSeries)
        Chart1.Series.Add(voltageSeries)

        ' Set chart titles and labels
        Chart1.ChartAreas("MainArea").AxisX.Title = "Time (s)"
        Chart1.ChartAreas("MainArea").AxisY.Title = "Current (A)"
        Chart1.ChartAreas("MainArea").AxisY2.Title = "Voltage (V)"
        Chart1.ChartAreas("MainArea").AxisY2.Enabled = AxisEnabled.True

        ' Associate voltage series with secondary Y-axis
        voltageSeries.YAxisType = AxisType.Secondary
    End Sub

    ' Classes to hold input and output samples
    Private Class InputSample
        Public Property CurrentSetPoint As Double
        Public Property Duration As Double
    End Class

    Private Class OutputSample
        Public Property Current As Double
        Public Property Voltage As Double
        Public Property Time As Double
    End Class
End Class

CurrentSetPoint,Duration
50,10
100,15
150,20
200,25