From owner-freebsd-usb@FreeBSD.ORG  Fri Feb 12 08:49:44 2010
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From: Hans Petter Selasky <hselasky@c2i.net>
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Date: Fri, 12 Feb 2010 09:48:14 +0100
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Subject: Re: Huawei E1752 under FreeBSD
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On Wednesday 10 February 2010 10:50:08 Milan Obuch wrote:
> Hi,
> 
> I got this 3G modem, it is not recognised under FreeBSD (tested with fresh
> 9-CURRENT).
> 
> I found no relevant information googling for "huawei e1752 freebsd",
> but "huawei e1752 linux" got me
> 
> http://www.blogcatalog.com/blog/iwrite-2/dbbfb38ae5ef9ccef8540aad7f9edbd6
> 
> and there is part about usb modeswitch, part of config reproduced here:
> 
> # Huawei E1752
> #
> # Contributor:
> 
> DefaultVendor=  0x12d1
> DefaultProduct= 0x1446
> 
> TargetVendor=   0x12d1
> TargetProdct=   0x1001
> 
> MessageEndpoint=        0x01
> 
> MessageContent=
>  "55534243000000000000000000000011060000000000000000000000000000"
> 
> It looks like this is the message necessary for switching this device into
> modem mode, but I have no idea how to issue such comm and. Also, for my use
>  I need to get this working under 8.0-RELEASE/STABLE.
> 

The last 16-hex bytes of the message is a SCSI command. Please make a new one 
in:

usb/usb_msctest.c

Then test and make a patch for usb/usbdevs and usb/serial/u3g.c .

--HPS