Date: Mon, 4 Oct 2010 13:08:28 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Cc: ed@freebsd.org, Ruslan Bukin <br@bsdpad.com> Subject: Re: /dev/ttyU0 - block at open Message-ID: <201010041308.28424.hselasky@c2i.net> In-Reply-To: <20101004100641.GA3403@bsdjail.com> References: <20101004100641.GA3403@bsdjail.com>
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Hi,
This is not directly related to USB, but rather TTY.
Ed, any clues?
--HPS
On Monday 04 October 2010 12:06:41 Ruslan Bukin wrote:
> Hi!
>
> I am using u3g driver for Gobi 2000 QDL device.
> The open ("/dev/ttyU0", O_RDWR) does not return anything,
> But it returns immediately with only O_NONBLOCK or O_NDELAY flags.
>
> is it normal behavior or not?
>
> The device is answering for commands normally in non-block state,
> but only returns error when I try to write firmware to it.
>
> I think may be the problem is in block/non-block modes.
>
> Thanks
>
> -Ruslan
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