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

[Taylor Alexander]

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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