[Noisebridge-discuss] linux-y question. Also info on Android Tablets hooking up to FTDI devices.

[David Rorex]

You might also investigate existing serial ports on the device, I have no
experience with the galaxy tab, but a quick google came up with this page
saying there's already a serial port, and you just need some tricky
soldering skills to access it:
http://forum.xda-developers.com/showthread.php?t=1010314

This way you wouldn't need to worry about any extra drivers, according to
the post it shows up as /dev/ttySAC2

On Sat, Aug 27, 2011 at 3:38 PM, Taylor Alexander <tlalexander at gmail.com>wrote:

> Hey,
> Yeah I've used Bluetooth before but this will be all integrated into a
> special case on the tablet (the FTDI is actually for hooking up an Xbee
> module, as all we're trying to do is use the tablet to talk to some remote
> Xbee sensors).
>
> We will use Bluetooth if we have to, but apparently the tablet supports
> FTDI devices somewhat readily (with the instructions given on that site),
> I'm just missing... something. So I'd like to get that working if possible.
>
> Additionally, this is a custom product that will be sold with the tablet,
> so other device support isn't a concern.
>
> Really it's just that hosting is the right solution, and I had a tutorial,
> so not doing it would be annoying.
> On Aug 27, 2011 3:30 PM, "Jake" <jake at spaz.org> wrote:
> > Is there a particular reason why it has to be wired to an FTDI device? I
> > assume you're looking for serial communications, and apparently it's a
> lot
> > easier to deal with bluetooth serial interfaces from android than trying
> > to recognize a hardware USB serial port plugged into the phone.
> >
> > bluetooth serial modules are only $5 !!!! Robby has been using one in his
>
> > phone-controlled RC car, and i'm using one on a radiation detector. You
> > just solder up a couple resistors and an LED to it, and give it 3.3
> volts.
> >
> > Another nice thing is that you can do this even with phones that are not
> > rooted or jailbroken, and have no actual USB host capabilities, like the
> > G1 (which are available very cheaply these days)
> >
> > -jake
> >
> > Taylor said:
> >
> > I saw the other thread about serial ports and linux and realized I should
> > ask my question here too (I am under the impression this is an
> appropriate
> > use of the mailing list?)
> >
> > I have been messing with getting my Samsung Galaxy Tab 10.1 Android
> > Honeycomb tablet to talk to FTDI devices. It is apparently capable but
> > requires compiling and loading some kernel modules.
> >
> > I followed a tutorial on building the kernel modules, got them loaded up,
> > and lsmod shows the module is running, but I still get "unknown USB
> > device"
> > when I plug it in, I don't get a ttyUSB0 device, and dmesg shows the
> > correct
> > VID and PID but claims it is not supported.
> >
> > The tutorial I followed is above my comments here:
> > http://android.serverbox.ch/?p=285&cpage=1#comment-468
> >
> > And I started a thread on XDA but haven't gotten any responses yet.
> >
> > Since we all might be interested in Android devices hosting FTDI devices,
> > and clearly someone here knows about linux and serial a bit, I thought
> I'd
> > ask here as well.
> >
> > Really my biggest questions are:
> > Would the module even load if I compiled it incorrectly?
> > And if it would not load unless it was correct, and I did compile and
> load
> > it correctly, then what else could be wrong?
> >
> > Thanks.
> > -Taylor
> >
>
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