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Question
fail to communicate with modem
I have a iTegNo GSM modem connected to my USB port
When i try to talk to it using AT command with MSCOMM, it does not seem to reply with the message I want
the COM port number is 3
The code:
Private Sub Form_Load()
'The Com port for GSM modem is 3
Dim test As String
Dim dummy As String
MSComm1.InputLen = 0
' Flush the input buffer.
'MSComm1.InputLen = 5
MSComm1.RThreshold = 5
MSComm1.CommPort = 3
MSComm1.InBufferCount = 0
MSComm1.PortOpen = True
MSComm1.Output = "AT"
' Wait for "OK" to come back from the modem.
Do
dummy = DoEvents()
' If there is data in the buffer, then read it.
If MSComm1.InBufferCount Then
MsgBox MSComm1.InBufferCount
MsgBox StrConv(MSComm1.Input, vbUnicode)
Exit Do
' Check for "OK".
End If
Loop
MSComm1.InBufferCount = 0
MSComm1.Output = "AT + CMGF = 1" & vbCrLf
MsgBox MSComm1.Input
End Sub
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by: BigRatPosted on 2004-02-05 at 09:01:32ID: 10282086
You normally have to Open it. Where do you do this?