Diego: I have the same problem. �Did you solve it?�How?
Thanks
Federico
El mi�rcoles, 18 de enero de 2012 08:43:44 UTC-2, blisca escribi�:
> After hours of failed attempts i ask your help once more
>
>
>
> I'm writin a simple GUI interface ,working under Windows XP, to communicate
>
> with some existing boards mounting FTDI FT232RQ.
>
>
>
> At first i used the Virtual COM VCP drivers 2.08.14 ,everything worked
>
> fine,but now i need to use the FTD2XX.dll functions.
>
>
>
> Many function were working OK,as
>
> FT_ListDevices,FT_Open,FT_SetBaudRate,FT_SetDataCharacteristics.
>
>
>
> I have problems with FT_Write returning FT_INVALID_HANDLE,i call it just
>
> after verified that FT_Open returns FT_OK.
>
>
>
> Can you explain the reason of such an error?Does it depend from previous
>
> installations of VCP drivers?
>
>
>
> Many thanks
>
> Diego
Reply by blisca●January 18, 20122012-01-18
After hours of failed attempts i ask your help once more
I'm writin a simple GUI interface ,working under Windows XP, to communicate
with some existing boards mounting FTDI FT232RQ.
At first i used the Virtual COM VCP drivers 2.08.14 ,everything worked
fine,but now i need to use the FTD2XX.dll functions.
Many function were working OK,as
FT_ListDevices,FT_Open,FT_SetBaudRate,FT_SetDataCharacteristics.
I have problems with FT_Write returning FT_INVALID_HANDLE,i call it just
after verified that FT_Open returns FT_OK.
Can you explain the reason of such an error?Does it depend from previous
installations of VCP drivers?
Many thanks
Diego