Re: Verdex / RoboStix : JamVM PWM

> Hi Michael,
>
> On Mon, May 12, 2008 at 7:14 AM, Michael Caughey <michael@...>
> wrote:
>> Ok I've taken about 6m onths off from this project, but I'm back at it
>> again.  When I left off I was stuck at how to get my application running
>> on
>> a Verdex under JamVM to communicate ot a Servo.  I have a robostix which
>> I
>> plan to use to communicate to a number of servos.  When I last emailled
>> this
>> group about this problem someone suggested I use i2c-io.  how ever this
>> looks to be a command line application, which means that the
>> communication
>> from a Java aplication would be slow.  So controlling servos at a high
>> rate
>> would be cumbersome  The servos will be controlling a UAV Throtle,
>> Airelons
>> left and right, rudder, elevator, camera pan and tilt.  The pan an tilt
>> might only see a few instructions a second but the others would see
>> between
>> 1 and 50 a second.  At the very least each would be seeing a couple per
>> second.
>>
>> 1) So my first question has anyone come up with a better solution in the
>> past 6 months?
>
> You could also use serial.
>
>> Next if the anwser is no then how about this:
>>
>> 2) I have not yet flashed the robostix with the i2c-io.hex.  I'm
>> assumming
>> this application listens to the i2c interface for a set of commands and a
>> seperate i2c-io application runs on the verdex, which when executed
>> passes
>> some message over i2c interface to the robostix that then executes the
>> command on the robostix.  Ff this is the case then could I use java to
>> communicate over th i2c interface directly.
>
> You should be able to talk over i2c using java. I'm not a java person,
> so I have no idea if java supports this directly or if it requires
> writing some custom code to allow this to happen.
>
>> 3) If so how easy is that?
>
> Not sure.
>
>> 4) Are there any examples of how to do this?
>>
>> 5) Is the command set for the i2c-io that runs on the robostix itself
>> defined anywhere?
>
> The robostix/Shared/i2c-io.h file describes the commands and data
> which are passed over the i2c bus. Personally, I just created i2c-io
> as an example of how you might use i2c and it was never really
> intended to be used as a final application. I was expecting people
> would create their own commands which they would send over i2c.
>
> --
> Dave Hylands
> Vancouver, BC, Canada
> http://www.DaveHylands.com/
>
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