libftdi Archives

Subject: Re: fdti_usb_open() (device not found)

From: Devon Lind <devon@xxxxxxxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Tue, 29 May 2012 13:07:09 -0700
On Fri, May 25, 2012 at 2:56 AM, Xiaofan Chen <xiaofanc@xxxxxxxxx> wrote:
> Did you install the libusb-win32 filter driver? I assume you
> want to use the libftdi-0.20 (and not libftdi-1.0).
>
> You can use either libusb-win32 device driver (replace
> the original FTDI driver) or filter driver (keep the exising
> FTDI driver).

Yes I am using the libftdi-0.20.  Installing the filter driver seemed
to do the trick for a few minutes.
But now, in the device manager (Windows 7), it won't even recognize
the device as a COM port.
I plug in the USB and it pops up in "Other Devices" as an "Unknown
Device" and then disappears after
a few seconds.

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