libftdi Archives

Subject: Re: Status of async mode

From: Thomas Jarosch <thomas.jarosch@xxxxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Cc: Daryl Lee <daryl@xxxxxxxxxxxx>
Date: Mon, 27 Jul 2009 11:27:57 +0200
Hello Daryl,

On Saturday, 11. July 2009 01:35:28 Daryl Lee wrote:
> I am trying to use libftdi in async mode, and have a question about the
> status of it, before I spend too much time wandering through the weeds.
>
> Questions:
> 1.  Is it well-tested?
> 2.  Is it known to work when the device is opened with
> ftdi_usb_open_desc?
>
> Reason for asking:
> I'm getting a crash in ftdi_async_complete any time I call it, directly
> or indirectly, as in ftdi_usb_close().  The value of ftdi->usb_dev->fd
> looks really odd.  I expected something file-descriptor-ish, as a small
> integer. I have a very large integer (134607408).  Right now, I'm looking
> for the place where that value gets set, but I thought I'd take a moment
> to ask for other eyes.  The crash occurs on the call to FD_SET from
> inside
> _usb_async_cleanup, and the documentation on FD_SET makes it look like it
> wants a normal file descriptor.

I guess we (=Intra2net AG) are the only ones using this mode.
So I'd rather call it expermiental-but-works-for-us :-)
No crash known to me so far. Did you find anything out?

Thomas


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