Re: [Gumstix-users] RoboStix communication to Gumstix and Ditto

[Dave H. <dhy...@gm...>]

Hi Roy,

On 7/9/05, Roy O'Neill <roy...@tu...> wrote:
> Ok I am still learning about communication with gumstix and the robostix.
> Basically I will have to code a program on the RoboStix to accept command=
s
> from my GumStix, and then make a program on my GumStix to send commands t=
o
> my RoboStix to process information or have it retrieve information. So my
> GumStix is the Higher thinker, and the RoboStix is my lower thinker.=20
>  =20
> I have already started to build a robot using that combination with the
> Gumstix and Mavric Microcontroller. I was hoping by the purchase of the
> gumstix to have a more intergrated setup, but it seams the machanics are =
the
> same. What advantage do I have with the GumStix RoboStix combo?=20

One advantage of the Robostix is that it has the 60 pin hirose
connector on it, which connects several of the ports together between
the gumstix and the Robostix. The other thing that the Robostix has on
it is all of the appropriate voltage level conversion stuff. The
gumstix is a 3.3v device and the Robostix/Maveric boards are 5v. So
you need to convert any signals that you connect between them from one
voltage level to the other. The Robostix takes care of this.

> What is the recommended communication between the GumStix and RoboStix? I=
2C,
> Serial?=20

It depends on what you want to use it for. There's also SPI available.
I'm planning on using i2c.

> When I first purchased the RoboStix I was under the impression that thier
> already a built in connector to connect the RoboStix to the GumStix as th=
ey
> both have the 60-pin Hirose connector. Does that ability actually exsist?

Yep. That's how they're designed to work together.

--=20
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/