Liquivision DC support?

[Jef Driesen]

On 2013-02-18 15:43, Lutz Vieweg wrote:
> a friend of mine happenes to use a Liquivision X1 computer.
>
> I understand libdivecomputer does not yet support that model,
> but wanted to ask whether there are any known attempts underway
> to change that?
>
> Or would it be realistic to assume that borrowing that computer
> for just a few days trying to sniff its protocol would deliver
> enough information to support it?

I looked briefly at the Liquivision Xen/Xeo last year. But I didn't get 
very far due to a lack of time.

One of the problems with these devices is that capturing the 
communication is a bit more challenging. The Liquivision application 
uses the FTDI D2XX driver and library to talk to the device. This means 
there is no virtual COM port and thus capturing the serial communication 
isn't possible as far as I know. The alternative is to capture the usb 
communication. But because usb is a lot more verbose then plain serial 
communication, the result is much more difficult to interpret. I also 
don't know any relative easy to use applications to capture usb 
communication (like a portmon equivalent for usb).

Jef