初始化
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267
RS485Loader/BlvBus.vb
Normal file
267
RS485Loader/BlvBus.vb
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Public Class BlvBus
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Private RichTextBox1 As RichTextBox
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Private g_DevType As DEV_TYPE = DEV_TYPE.NANO_485
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Sub New(ByRef RichTextBox As RichTextBox)
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RichTextBox1 = RichTextBox
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End Sub
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Public Enum FMT
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ADD_FM
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SEND_TYPE
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DEV_TYPE
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ADD_TO
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LEN
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CHECK
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CMD
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PARAM
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End Enum
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Public Enum CMD
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LOADER_CMD_SEARCH = &HC0
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LOADER_CMD_JUMP_TO_BOOT = &HC1
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End Enum
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Public Enum DEV_TYPE
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NANO_485
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PB_485
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BLV_C1
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End Enum
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Const LOADER_CMD_OFFSET = &H10
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Const LOADER_PKT_LEN = 512
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Private COLOR_ERROR As Color = Color.Red
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Private COLOR_NORMAL As Color = Color.Blue
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Private COLOR_MESSAGE As Color = Color.Black
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Private g_SendBuffer(LOADER_PKT_LEN - 1) As Byte
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Private g_RecvBuffer(LOADER_PKT_LEN - 1) As Byte
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Private g_RecvLen As UInt16 = 0
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Private g_SendSn As Byte = 1
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Private g_RichTextBoxLastTick As UInt32
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Public Function SearchDeviceCmd(ByVal devType As Byte, ByVal port As System.IO.Ports.SerialPort, ByVal address As Byte, ByRef devId As String, ByRef bootFlag As String, ByRef devModel As String, ByVal groupFlag As Boolean, ByVal val As DEV_TYPE, Optional ByVal maxRetry As Integer = 3, Optional ByVal timeout As Integer = 100) As Boolean
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g_DevType = val
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Array.Clear(g_SendBuffer, 0, g_SendBuffer.Length)
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Array.Clear(g_RecvBuffer, 0, g_RecvBuffer.Length)
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FillSendBuf(devType, g_SendBuffer, CMD.LOADER_CMD_SEARCH, 0, address, groupFlag)
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If WriteToDevice(devType, port, g_SendBuffer, g_SendBuffer(FMT.LEN), g_RecvBuffer, g_RecvLen, groupFlag, maxRetry, timeout) Then
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devId = g_RecvBuffer(FMT.PARAM).ToString("X02") & " " & g_RecvBuffer(FMT.PARAM + 1).ToString("X02") & " " & g_RecvBuffer(FMT.PARAM + 2).ToString("X02") & " " & g_RecvBuffer(FMT.PARAM + 3).ToString("X02")
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bootFlag = "APP"
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devModel = System.Text.Encoding.ASCII.GetString(g_RecvBuffer, FMT.PARAM + 4, g_RecvLen - FMT.PARAM - 4)
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Return True
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End If
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Return False
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End Function
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Public Function JumpBootCmd(ByVal devType As Byte, ByVal port As System.IO.Ports.SerialPort, ByVal address As Byte, ByVal groupFlag As Boolean, ByVal val As DEV_TYPE, ByVal maxRetry As Integer, ByVal timeout As Integer) As Boolean
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g_DevType = val
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Array.Clear(g_SendBuffer, 0, g_SendBuffer.Length)
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Array.Clear(g_RecvBuffer, 0, g_RecvBuffer.Length)
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FillSendBuf(devType, g_SendBuffer, CMD.LOADER_CMD_JUMP_TO_BOOT, 0, address, groupFlag)
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Return WriteToDevice(devType, port, g_SendBuffer, g_SendBuffer(FMT.LEN), g_RecvBuffer, g_RecvLen, groupFlag, maxRetry, timeout)
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End Function
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'Public Sub GroupJumpBootCmd(ByVal port As System.IO.Ports.SerialPort, ByVal groupFlag As Boolean， ByVal val As DEV_TYPE, Optional ByVal maxRetry As Integer = 3, Optional ByVal timeout As Integer = 100)
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' Dim address As Byte
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' g_DevType = val
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' Array.Clear(g_SendBuffer, 0, g_SendBuffer.Length)
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' Array.Clear(g_RecvBuffer, 0, g_RecvBuffer.Length)
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' FillSendBuf(g_SendBuffer, CMD.LOADER_CMD_JUMP_TO_BOOT, 0, address, groupFlag)
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' WriteToDevice(port, g_SendBuffer, g_SendBuffer(FMT.LEN), g_RecvBuffer, g_RecvLen, groupFlag, maxRetry, timeout)
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'End Sub
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Private Function WriteToDevice(ByVal devType As Byte, ByVal port As System.IO.Ports.SerialPort, ByVal sendBuf() As Byte, ByVal sendLen As UInt16, ByRef recvBuf() As Byte, ByRef recvLen As UInt16, ByVal groupFlag As Boolean, Optional ByVal maxRetry As Integer = 3, Optional ByVal timeout As Integer = 100) As Boolean
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Dim retryCount As Byte = 0
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Dim result As Boolean = False
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Dim retFlag As Boolean = False
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Dim timeTick As UInt32
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Dim rLen As Integer = 0
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Dim readIndex As UInt16 = 0
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Do
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RichTextBox_Show("TX", sendBuf, sendLen, COLOR_MESSAGE)
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retFlag = UartSendBuf(port, sendBuf, sendLen) '发送数据
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WaitSendComp(port) '等待发送出去
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If g_DevType = DEV_TYPE.PB_485 Then
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Delay(0.8 * sendLen)
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End If
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If retFlag Then
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If groupFlag = False Then '对于 groupFlag = false 应该要做延时，不能一直不停的发
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retFlag = False
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timeTick = My.Computer.Clock.TickCount
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Do
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Try
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rLen = port.BytesToRead
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Catch ex As Exception
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rLen = 0
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End Try
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If rLen > 0 Then '等待接收数据
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timeTick = My.Computer.Clock.TickCount
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port.Read(recvBuf, readIndex, rLen)
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readIndex += rLen
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If readIndex > FMT.LEN AndAlso readIndex >= recvBuf(FMT.LEN) Then
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retFlag = True
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Exit Do
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End If
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End If
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Loop Until (My.Computer.Clock.TickCount - timeTick) > timeout
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If retFlag Then
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RichTextBox_Show("RX", recvBuf, readIndex, COLOR_MESSAGE)
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If recvBuf(FMT.ADD_FM) = sendBuf(FMT.ADD_TO) AndAlso
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recvBuf(FMT.ADD_TO) = sendBuf(FMT.ADD_FM) AndAlso
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recvBuf(FMT.DEV_TYPE) = devType AndAlso
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recvBuf(FMT.LEN) = readIndex AndAlso
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CalcCheckSum(recvBuf, readIndex) = 0 AndAlso
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recvBuf(FMT.CMD) = sendBuf(FMT.CMD) + LOADER_CMD_OFFSET Then
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recvLen = readIndex
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result = True
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End If
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Else
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If readIndex > 0 Then
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RichTextBox_Show("RX", recvBuf, readIndex, COLOR_ERROR)
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Else
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RichTextBox_Show("没有接收到数据", COLOR_ERROR)
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End If
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End If
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Else
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Delay(20)
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End If
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End If
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'Application.DoEvents()
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If result = True Then Exit Do
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retryCount += 1
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Loop Until retryCount >= maxRetry
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Return result
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End Function
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Private Sub FillSendBuf(ByVal devType As Byte, ByRef sendBuf() As Byte, cmd As Byte, paramLen As UInt16, ByVal address As Byte, ByVal groupFlag As Boolean)
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sendBuf(FMT.ADD_FM) = &H0
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sendBuf(FMT.SEND_TYPE) = g_SendSn And &HF
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sendBuf(FMT.DEV_TYPE) = devType
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If groupFlag Then
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sendBuf(FMT.SEND_TYPE) = sendBuf(FMT.SEND_TYPE) Or &H80
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sendBuf(FMT.ADD_TO) = &H0 '针对所有
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Else
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sendBuf(FMT.ADD_TO) = address
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End If
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sendBuf(FMT.LEN) = FMT.PARAM + paramLen
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sendBuf(FMT.CHECK) = 0
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sendBuf(FMT.CMD) = cmd
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sendBuf(FMT.CHECK) = CalcCheckSum(sendBuf, sendBuf(FMT.LEN))
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g_SendSn = g_SendSn + 1
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If g_SendSn > &HF Then
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g_SendSn = 0
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End If
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End Sub
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Private Sub WaitSendComp(ByVal port As System.IO.Ports.SerialPort)
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Do
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Delay(1)
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Loop Until port.BytesToWrite = 0
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End Sub
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Private Function UartSendBuf(ByVal port As System.IO.Ports.SerialPort, ByVal buf() As Byte, ByVal len As UInt16) As Boolean
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Try
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port.DiscardOutBuffer()
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port.DiscardInBuffer()
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Catch ex As Exception
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Return False
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End Try
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Try
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port.Write(buf, 0, len)
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Catch ex As Exception
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Return False
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End Try
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Return True
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End Function
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Private Sub Delay(ByVal time As Integer)
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Dim timeEnd As Integer = My.Computer.Clock.TickCount + time
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Do
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Application.DoEvents()
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Loop Until My.Computer.Clock.TickCount > timeEnd
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End Sub
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Private Function CalcCheckSum(ByVal buf() As Byte, ByVal len As UInt16) As Byte
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Dim sum As Int16 = 0
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Dim i As UInt16 = 0
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Dim retByte As Byte
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For i = 0 To len - 1
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sum += buf(i)
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sum = sum And &HFF
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Next
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retByte = (Not sum) And &HFF
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Return retByte
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End Function
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Private Sub RichTextBox_AddTick()
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Dim str As String = ""
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str = "["
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str += My.Computer.Clock.TickCount.ToString.PadLeft(10, " ")
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str += "] ["
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str += (My.Computer.Clock.TickCount - g_RichTextBoxLastTick).ToString.PadLeft(5, " ")
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str += "]"
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RichTextBox1.AppendText(str)
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g_RichTextBoxLastTick = My.Computer.Clock.TickCount
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End Sub
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Private Sub RichTextBox_Show(ByVal str As String, ByVal cor As Color)
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Dim tempSelStart As Integer
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Dim tempSelLenght As Integer
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RichTextBox_AddTick()
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tempSelStart = RichTextBox1.TextLength
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RichTextBox1.AppendText(str)
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tempSelLenght = RichTextBox1.TextLength - tempSelStart
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RichTextBox1.Select(tempSelStart, tempSelLenght) '选中文本
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RichTextBox1.SelectionColor = cor '当前选中的文本显示颜色
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RichTextBox1.AppendText(vbNewLine)
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RichTextBox1.ScrollToCaret() '将内容滚动的作用
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End Sub
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Private Sub RichTextBox_Show(ByVal str1 As String, ByVal buf() As Byte, ByVal len As UInt16, ByVal cor As Color)
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Dim tempSelStart As Integer
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Dim tempSelLenght As Integer
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Dim i As UInt16
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Dim str As String = ""
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RichTextBox_AddTick()
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tempSelStart = RichTextBox1.TextLength
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RichTextBox1.AppendText(str1)
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RichTextBox1.AppendText("--")
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For i = 0 To len - 1
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str += Hex(buf(i)).PadLeft(2, "0")
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str += " "
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Next
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RichTextBox1.AppendText(str)
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tempSelLenght = RichTextBox1.TextLength - tempSelStart
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RichTextBox1.Select(tempSelStart, tempSelLenght) '选中文本
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RichTextBox1.SelectionColor = cor '当前选中的文本显示颜色
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RichTextBox1.AppendText(vbNewLine)
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RichTextBox1.ScrollToCaret() '将内容滚动的作用
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End Sub
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End Class
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