Re: Verdex / RoboStix : JamVM PWM

>I guess i'm trying to keep from writing c code here.  So it sounds like i
> need to use the i2c app as a demo application and extend it to do what i
> need.  I have found some reference to the ability to communicate i2c.
> Serial would be nice, but I have a GPS, IMU and Video cam on my serial
> ports.
>
> aye, yah yah, so i have to write c ocde. Any suggestions of a good free c
> IDE?
>
>
> ----- Original Message -----
> From: "Dave Hylands" <dhylands@...>
> To: "General mailing list for gumstix users."
> <gumstix-users@...>
> Sent: Monday, May 12, 2008 10:26 AM
> Subject: Re: [Gumstix-users] 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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