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.


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

Try also to enable ucom debugging:

sysctl hw.usb.ucom.debug=15

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