On 10/13/2011 04:35 AM, Jan Stevens wrote:
Hello,

I'm working on a project were I have to combine the Arduino with the Irobot and with Player/Stage. The idea is to create a uniform programming language for different kinds of robots. I've seen Arduino's get connected to an Irobot Create and also player/stage works wonderfully with the Irobot, the problem is the following.

The purpose is to compile the custom player code for the Arduino so the Arduino can send the right commands to the irobot. Meaning that I will need to alter the player/stage code so my program can run on the Arduino and all the necessarily translation is done.

So basicly I have a textbook player code, I will need the translations of the different proxy's and command's so the Arduino can translate the player code into opcodes for the irobot. I know that alot of people send there own opcodes in the arduino programming language but the point of this project is to have one program that can run on multiple robots (and then see witch robot handels the commands better).

My question is, what files are used and is it possible?

Thanks,

Regards

~Jan Stevens


It sounds like you want to write an arduino program that will respond to commands and data requests from a remote computer (over te USB/Serial), and that you want Player to be sending the commands.  If that's wrong, please clarify so that we can give you better suggestions.

To do something like the above, first you'll have to define a command structure and a set of commands that the Arduino understands (stuff like "get sensor", "set motor speed", etc.)  Then you'll need to program a Player driver that is able to send those commands and retreive that data based on the messages it gets over the interfaces it provides.  For example, if your driver gets a position2d velocity command, it will convert that to something the Arduino understands, and send it along.

Writing your own Player drivers is pretty simple, there is more information on the wiki[1] (Make sure to also read the articles in "Further Reading".)  Since Player already knows how to command the create, I don't know that it's necessary to include an Arduino in the loop to begin with.  And since it's fairly easy to add drivers to Player for other robot types, it seems like adding an Arduino is just an extra level of complexity, especially since Player already abstracts all of its devices to a uniform set of interfaces, making client programs largely hardware-agnostic.

Rich

[1] http://playerstage.sourceforge.net/wiki/Writing_a_Player_driver