See my other message I just sent you in the other thread. Do you have a USB device which accepts data (commands) and responds with data you can use for testing?
>>Ed's Faq does it for you:
>>
>>LOCAL oComm, i, cOldErrorHandler
>>DECLARE aComPorts[16]
>>aComPorts = .T.
>>cOldErrorHandler = ON('ERROR')
>>FOR i = 1 TO 16
>> oComm = CREATEOBJ('MsCOMMLib.Mscomm')
>> oComm.CommPort = i
>> ON ERROR aComPorts[i] = .F.
>> oComm.PortOpen = .T.
>> oComm.PortOpen = .F.
>> oComm = NULL
>> ON ERROR &cOldErrorHandler
>>ENDFOR
>>For i = 1 TO 16
>> IF aComPorts[i]
>> ? [Comm Port ] + ALLTRIM(STR(i)) + [ is valid]
>> ENDIF
>>ENDFOR
>>>>
>>>>Up to 16,
>>>>
>>>>FAQ #7943
>>>>
>
>Thanks Tracy but what about USB ports?
>
>Colin
>>>>>Hi all,
>>>>>
>>>>>is there a vfp command that can give me the number of serial ports installed ?
>>>>>
>>>>>Best Regards,
>>>>>Hans
>>>
>>>Jim
>>>
>>>Is there a VFP command which can tell me what those ports are?
>>>
>>>Thanks
>>>
>>>Colin
.·*´¨)
.·`TCH
(..·*
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