Re: [Ftdi-usb-sio-devel] cannot open port after improper closing

[Paul T. <pth...@gm...>]

How do you reset it?

2009/2/13 David Decotigny <dav...@ll...>:
>
> Hello,
>
> Something similar sometimes happens to us. My understanding is that the
> ftdi output buffer (slave device's side) is full and keeps on being
> filled by the HCI or linux usb layers (?), but the slave device doesn't
> eat that data. On our design, resetting the slave device does the trick
> (it will eat some data at startup, so generally we have to reset it
> several times so that it drains completely the linux/hci buffered data
> via the ftdi).
>
> I don't know if there is any means to cleanly drain all the buffers
> (provided my understanding was right) in software. Any hint would be
> welcome.
>
> I might be wrong in my explanation. Please don't hesitate to correct me.
> Hope this helps anyway,
>