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Private Sub MSComm1_OnComm() '接收数据
Dim strBuff As String
Select Case MSComm1.CommEvent
Case 2
MSComm1.InputLen = 0
strBuff = MSComm1.Input
BytReceived() = strBuff
jieshou
lenInput = Len(strData)
Text2 = lenInput \ 2
'数据处理代码
End Select
End Sub
Public Function jieshou() '接收数据处理为16进制
Dim i As Integer
For i = 0 To UBound(BytReceived)
If Len(Hex(BytReceived(i))) = 1 Then
strData = strData & "0" & Hex(BytReceived(i))
Else
strData = strData & Hex(BytReceived(i))
End If
Next
txtReceive = strData
End Function
Private Sub cmdSendHex_Click() '16进制发送
Dim sj() As Byte
Dim sj_Txt As String
Dim i As Integer
sj_Txt = TxtSend
If Len(TxtSend) Mod 2 = 0 And Len(TxtSend) <> 0 Then '检验16进制字符串长
ReDim sj(Len(sj_Txt) / 2 - 1)
For i = 0 To Len(sj_Txt) - 1 Step 2
sj(i / 2) = Val("&H" & Mid(sj_Txt, i + 1, 2))
Next
If MSComm1.PortOpen = True Then
MSComm1.Output = sj
Else
MSComm1.PortOpen = True
Shape1.FillColor = vbGreen
MSComm1.Output = sj
End If
Else
MsgBox ("格式不对!")
End If
End Sub
'字符串表示的十六进制数据转化为相应的字节串,返回转化后的字节数
Private Sub Form_Load()
MSComm1.InputMode = comInputModeBinary '采用二进制传输
MSComm1.InBufferCount = 0 '清空接受缓冲区
MSComm1.OutBufferCount = 0 '清空传输缓冲区
MSComm1.RThreshold = 1 '产生MSComm事件
MSComm1.InBufferSize = 1024
TxtSend = ""
TxtSend = "" '800A00113135323634389794"
txtReceive = ""
Text2 = ""
End Sub