atben and Arduino in Beijing

julien forgeat julienforgeat at
Wed Aug 17 22:09:23 EDT 2011

On Wed, Aug 17, 2011 at 4:25 PM, Werner Almesberger
<werner at> wrote:
> julien forgeat wrote:
>> (1) can it be connected to a Arduino microSD shield?
> The Arduino only provides part of the signals of the uSD interface.
> That's enough for regular uSD cards (they can operate in a single-bit
> mode), but atben needs all the signals. So this wouldn't work.
> You would also need to write a driver. atben is just the transceiver
> chip, without a microcontroller. XBee has its own microcontroller
> that implements the networking protocol.

I did not know the xbee had its own micro-controller implementing the
protocol, could the protocol be implemented on a ATMEL168 that we
typically have on an Arduino board? That should be fun to do while
probably too hard for me but the goal to have free wireless
communication for the Arduino is really very appealing

>> (3) how about the micro sd port on a N900, do you guys think it could
>> be connected there too?
> Hmm, I don't the N900, but from a look at the schematics, it seems
> you have all the signals you need. Maybe you can even turn the uSD
> slot power on and off (VMMC1), which would allow you to reset the
> atben. (You need this for a few things, but for regular operation,
> you're probably fine without reset.)
> You'd still need to adapt the driver, though. Since the N900 runs
> Linux, this task would be much easier than on the Arduino, since
> you could reuse the existing work for the Ben.

That's good to know, I am more interested in having it working on the
Arduino board but it would be cool to have on the phone too :-)

Thanks for your reply, that's a lot of useful info for me :-)

> - Werner
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