Imports System.IO.Ports

Public Class SharedFunction
#Region "串口操作"
    '打开串口
    ''' <summary>
    ''' 打开串口
    ''' </summary>
    ''' <param name="m_Serial">串口</param>
    ''' <param name="portName">串口号</param>
    ''' <param name="baudRate">波特率</param>
    ''' <returns></returns>
    Public Shared Function OpenSerial(m_Serial As SerialPort, portName As String, baudRate As Integer) As Boolean
        If IsNothing(m_Serial) OrElse m_Serial.IsOpen Then Return False
        Try
            m_Serial.PortName = portName
            m_Serial.BaudRate = baudRate
            m_Serial.Parity = Parity.Even
            m_Serial.Open()
            Return True
        Catch ex As Exception
            Return False
        End Try

    End Function



    '设置串口波特率 
    ''' <summary>
    ''' 设置串口波特率
    ''' </summary>
    ''' <param name="m_Serial"> 串口 </param>
    ''' <param name="baudRate">波特率</param>
    ''' <returns></returns>
    Public Shared Function SetSerialBaudRate(m_Serial As SerialPort, baudRate As Integer) As Boolean
        If IsNothing(m_Serial) OrElse Not m_Serial.IsOpen Then Return False
        m_Serial.BaudRate = baudRate
        Return True
    End Function



    ''' <summary>
    ''' 关闭串口
    ''' </summary>
    ''' <param name="m_Serial">串口</param>
    ''' <param name="isread">串口关闭标志</param>
    ''' <param name="isListen">串口等待关闭标志</param>
    Public Shared Sub CloseSerial(m_Serial As SerialPort, ByRef isread As Boolean, ByRef isListen As Boolean)
        If IsNothing(m_Serial) OrElse Not m_Serial.IsOpen Then Return
        isread = True
        While isListen
            Application.DoEvents()
            Threading.Thread.Sleep(10)
        End While

        Threading.Thread.Sleep(10)
        m_Serial.Close()
        isread = False
    End Sub


#End Region


#Region "数据转换"
    Public Shared Function ByteToHexString(databuff() As Byte) As String
        Dim strData As String = String.Empty
        For i = 0 To databuff.Length - 1
            strData &= $" {Hex(databuff(i)).PadLeft(2, "0"c)}"
        Next
        Return strData
    End Function
    Public Shared Function StringToHexString(hexstr As String) As String
        '判断字符串是否为空或  者为空字符串
        If String.IsNullOrEmpty(hexstr) Then Return Nothing
        '替换字符中的分隔符号
        hexstr = hexstr.Trim().Replace(" ", "").Replace("-", "").Replace(",", "").Replace(":", "").Replace(";", "").Replace(".", "")
        '判断字符串的长度是否为偶数
        If hexstr.Length Mod 2 <> 0 Then
            '不为偶数往最后一个字节前面补0
            hexstr = hexstr.Insert(hexstr.Length - 1, "0")
        End If
        '以2为步长，将字符串转换为字节数组 不足2位前面补0
        Dim databuff() As Byte = Enumerable.Range(0, hexstr.Length).Where(Function(x) x Mod 2 = 0).Select(Function(x) Convert.ToByte(hexstr.Substring(x, 2), 16)).ToArray()
        Return ByteToHexString(databuff)
    End Function
    Public Shared Function HexStringToByte(hexstr As String) As Byte()
        '判断字符串是否为空或  者为空字符串
        If String.IsNullOrEmpty(hexstr) Then Return Nothing
        '替换字符中的分隔符号
        hexstr = hexstr.Trim().Replace(" ", "").Replace("-", "").Replace(",", "").Replace(":", "").Replace(";", "").Replace(".", "")
        '判断字符串的长度是否为偶数
        If hexstr.Length Mod 2 <> 0 Then
            '不为偶数往最后一个字节前面补0
            hexstr = hexstr.Insert(hexstr.Length - 1, "0")
        End If
        '以2为步长，将字符串转换为字节数组 不足2位前面补0
        Return Enumerable.Range(0, hexstr.Length).Where(Function(x) x Mod 2 = 0).Select(Function(x) Convert.ToByte(hexstr.Substring(x, 2), 16)).ToArray()

    End Function

    ''' <summary>
    ''' Int转2个字节Byte
    ''' 高字节在前,低字节在后
    ''' </summary>
    ''' <param name="i"></param>
    ''' <returns></returns>
    Public Shared Function IntToByteHB(ByVal i As Integer) As Byte()
        Dim btemp() As Byte = {0, 0}
        Dim b() As Byte = BitConverter.GetBytes(i)
        btemp(0) = b(0)
        btemp(1) = b(1)
        Return btemp
    End Function

    ''' <summary>
    ''' Int转2个字节Byte
    ''' 高字节在前,低字节在后
    ''' </summary>
    ''' <param name="i"></param>
    ''' <returns></returns>
    Public Shared Function IntToByteLB(ByVal i As Integer) As Byte()
        Dim btemp() As Byte = {0, 0}
        Dim b() As Byte = BitConverter.GetBytes(i)
        btemp(0) = b(1)
        btemp(1) = b(0)
        Return btemp
    End Function

#End Region
#Region "数据校验"
    '计算数据和 校验
    Public Shared Function GetCheckSum(ByVal data As Byte()) As Byte

        Dim sum As Integer = 0
        For i As Integer = 0 To data.Length - 1
            sum += data(i)
        Next
        Return sum

    End Function
    Public Shared Function GetCheckSumMod(ByVal data As Byte()) As Byte

        Dim sum As Integer = 0
        For i As Integer = 0 To data.Length - 2
            sum += data(i)
        Next
        sum = sum And &HFF
        Return sum

    End Function

    Public Shared Function GetCheckSumMod2(ByVal data As Byte()) As Byte

        Dim sum As Integer = 0
        For i As Integer = 0 To data.Length - 1
            sum += data(i)
        Next
        sum = sum And &HFF
        Return sum

    End Function

    ''' <summary>
    ''' 和校验取余数
    ''' 求Byte数组的和校验取余数
    ''' </summary>
    ''' <param name="dataPacket">Byte数组</param>
    ''' <returns></returns>
    Public Function GetSumCheckMod(dataPacket As Byte()) As Byte
        Dim sum As Integer
        For idx = 0 To dataPacket.Length - 1
            sum += dataPacket(idx)
            sum = sum And &HFF
        Next
        Dim sumMod As Byte = &HFF - sum
        Return sumMod
    End Function
#End Region

#Region "跨线程调用UI"
    Delegate Sub delSetFromUI(control As Control, mText As String, textcolor As Color, cbolor As Color)
    Public Shared Sub SetFromUI(ByVal control As Control, mText As String, textcolor As Color, cbolor As Color)
        If IsNothing（control) Then Return
        If control.InvokeRequired Then
            control.Invoke(New delSetFromUI(AddressOf SetFromUI), control, mText, textcolor, cbolor)
        Else
            control.Text = mText
            control.ForeColor = textcolor
            control.BackColor = cbolor
        End If

    End Sub
#End Region



End Class