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Date:      Wed, 6 Jul 2011 08:59:58 +0200
From:      Hans Petter Selasky <hselasky@c2i.net>
To:        Renato Tambellini <rtsanch@gmail.com>
Cc:        freebsd-gnats-submit@freebsd.org, freebsd-usb@freebsd.org
Subject:   Re: usb/158650: uplcom USB To COM Device doesn't transmit data, only receive
Message-ID:  <201107060859.58243.hselasky@c2i.net>
In-Reply-To: <CAKDHCroR5MuKEGXqWQ8t_-JLsgKAui09eT5W1Nw7-z4X92_XGQ@mail.gmail.com>
References:  <201107050037.p650bnQK060628@red.freebsd.org> <201107050906.17339.hselasky@c2i.net> <CAKDHCroR5MuKEGXqWQ8t_-JLsgKAui09eT5W1Nw7-z4X92_XGQ@mail.gmail.com>

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On Tuesday 05 July 2011 17:31:36 Renato Tambellini wrote:
> Hi Hans,
> 
> I'm trying to transmit data to an serial console on another machine
> and nothing happens
> when I send data, the same occur when I use fldigi to control my
> amateur radio transceiver and use a serial mouse attached to the USB
> to COM serial port.
> 
> In my old machine that was a FreeBSD 6, the device worked normally via
> ucom driver. After sent this PR, I update my kernel to the latest
> source with csup and the problem has worsened. Now when the program
> wait a response of the radio, the device is disconnected by kernel.
> 
> Lots of messages generated by kernel:
> 
> uplcom0: at uhub3, port 2, addr 5 (disconnected)
> uplcom0: <Prolific Technology Inc. USB 2.0 To COM Device, class 0/0,
> rev 1.10/3.00, addr 5> on usbus1
> 
> This usbdump.txt was recorded when I use fldigi to get the radio
> transceiver frequency.

Hi,

It looks like your application is only opening and closing the comport.

Try also to enable ucom debugging:

sysctl hw.usb.ucom.debug=15

--HPS



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