On Wed, Apr 27, 2011 at 6:44 PM, Uwe Bonnes
<bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> The Ft Devices have (ample) FIFOs. If the data sent to the device fits in
> the fifo and you or your system doesn't flush those FIFOS, data sent to the
> FT Device while connected to the system but not served by libftdi will still
> be there.
Right, and that works fine when e.g. my program sleeps between reads.
> At least on linux however, often the FTDI_SIO driver is loaded when the
> device is plugged, and FTDI_SIO probably will pull data from the device.
Yeah, I suspect something like this is happening. I'm on OS X, but I
definitely see that my software's first read after launching starts
somewhere in the middle of the count, even though a logic analyzer
shows that the count really started at zero. This isn't a real
problem, just making sure I understand how it works correctly.
--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
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