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From: Hans Petter Selasky <hselasky@c2i.net>
To: perryh@pluto.rain.com
Date: Thu, 10 Jan 2008 16:38:19 +0100
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Cc: freebsd-usb@freebsd.org
Subject: Re: ZyXEL Omni 56K Plus USB/serial modem
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On Thursday 10 January 2008, perryh@pluto.rain.com wrote:
> > To me it looks like they are using some kind of propritary
> > protocol. You could try and see if any of the endpoints,
> > which appear like /dev/ugen0.x files respond with "OK" when
> > you send "AT\r\n" to the endpoint ...
>
> How would I go about doing that?  tip(1), or something else?
> (In case it is not obvious, I am not all that familiar with
> the USB support in FreeBSD.)

Hi,

I think the best will be to write a small C-program:

Here is the basic:

    if (argc < 2) {
        err(1, "Usage: ./a.out /dev/ugen0.1");
    }

    f = open(argv[1], O_RDWR);
    if (f < 0) {
        err(1, "Cannot open '%s'", argv[1]);
    }

    /* allow short transfers */
    error = 1;
    error = ioctl(f, USB_SET_SHORT_XFER, &error);
    if (error < 0) {
        err(1, "Cannot set short XFER\n");
    }

    error = 1000;
    error = ioctl(f, USB_SET_TIMEOUT, &error);
    if (error < 0) {
        err(1, "Cannot set timeout");
    }

    error = write(f,"AT\r\n", sizeof("AT\r\n")-1);

while (1) {
    error = read(f,buf,1);
    printf("%c", buf[0]);
}

You have to modify the above before it compiles.

--HPS