java-player-users

[Java-player-users] MComInterface

[Joseph B. <blu...@ai...>]

I have been experimenting with the MComm interface and I have not had 
much luck. The java doc says " This interface returns no data and 
accepts no commands." The documentation also says that the Pop method is 
defined however it doesn't seem to be written as part of the 
MComInterface.java. What can be done with the current communication 
interface? Has anyone had any success using the interface? I appreciate 
any advice you can lend.

Joseph Blumenthal

Re: [Java-player-users] MComInterface

[Radu B. R. <ve...@in...>]

Hello Joseph,

I haven't tested it yet. I will look at it and write some examples sometime
next week. I'm kind of busy right now with some final university projects,
but that will end soon :)

What are you trying to use it for?

On Fri, May 13, 2005 at 02:28:44PM -0400, Joseph Blumenthal wrote:
> I have been experimenting with the MComm interface and I have not had 
> much luck. The java doc says " This interface returns no data and 
> accepts no commands." The documentation also says that the Pop method is 
> defined however it doesn't seem to be written as part of the 
> MComInterface.java. What can be done with the current communication 
> interface? Has anyone had any success using the interface? I appreciate 
> any advice you can lend.
> 
> Joseph Blumenthal

Yours sincerely,
Radu Bogdan Rusu
--
| Radu Bogdan 'veedee' Rusu | http://www.rbrusu.com
| PhD student/teaching assistant
| Robotics Research Group, Technical University of Cluj-Napoca[.ro]

Re: [Java-player-users] MComInterface

[Joseph B. <blu...@ai...>]

Radu Bogdan Rusu wrote:

>Hello Joseph,
>
>I haven't tested it yet. I will look at it and write some examples sometime
>next week. I'm kind of busy right now with some final university projects,
>but that will end soon :)
>
>What are you trying to use it for?
>
>On Fri, May 13, 2005 at 02:28:44PM -0400, Joseph Blumenthal wrote:
>  
>
>>I have been experimenting with the MComm interface and I have not had 
>>much luck. The java doc says " This interface returns no data and 
>>accepts no commands." The documentation also says that the Pop method is 
>>defined however it doesn't seem to be written as part of the 
>>MComInterface.java. What can be done with the current communication 
>>interface? Has anyone had any success using the interface? I appreciate 
>>any advice you can lend.
>>
>>Joseph Blumenthal
>>    
>>
>
>Yours sincerely,
>Radu Bogdan Rusu
>--
>| Radu Bogdan 'veedee' Rusu | http://www.rbrusu.com
>| PhD student/teaching assistant
>| Robotics Research Group, Technical University of Cluj-Napoca[.ro]
>
>
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I am trying to use the MComInterface for a LIFOCOM device to broadcast 
position between simulated Pioneer 3AT's  for some simple multi-agent EC 
learning experiments. I appreciate any help you can provide with your 
busy schedule.

Joseph Blumenthal

Re: [Java-player-users] MComInterface

[Radu B. R. <ve...@in...>]

On Mon, May 16, 2005 at 03:30:45PM -0400, Joseph Blumenthal wrote:
> I am trying to use the MComInterface for a LIFOCOM device to broadcast 
> position between simulated Pioneer 3AT's  for some simple multi-agent EC 
> learning experiments. I appreciate any help you can provide with your 
> busy schedule.
> 
> Joseph Blumenthal

Okay, let's see what we got. I just commited the changes to MComInterface to
the SF CVS repository.

Basically, I added the following methods:
- Push() -> PLAYER_MCOM_PUSH_REQ
- Pop() -> PLAYER_MCOM_POP_REQ
- Read() -> PLAYER_MCOM_READ_REQ
- Clear() -> PLAYER_MCOM_CLEAR_REQ
- setCapacity() -> PLAYER_MCOM_SET_CAPACITY_REQ

While looking at test_mcom.cc, it seems that a proper test should look like:
- first subscribe to the interface using requestInterfaceMCom()
- use Push() to send some data (eg. Push (1, "test", data), where data is a
char array and "test" is the channel name)
- use Read() or Pop() (they look the same to me) to read data from a channel
(eg. Pop (1, "test"))
- check if the data has been read using isDataReady() and if true, use the
get* methods to get the desired data (getRData(), getDataType(), etc)

Unfortunately, I don't have any access to a Lifecom device, so I can't test
this properly.

If you have any troubles retreiving the code from CVS (use
http://sourceforge.net/cvs/?group_id=135304, Anonymous CVS Access section
for details) please let me know, and I'll build 1.6.3.2 and upload it
tomorrow.

Yours sincerely,
Radu Bogdan Rusu
--
| Radu Bogdan 'veedee' Rusu | http://www.rbrusu.com
| PhD student/teaching assistant
| Robotics Research Group, Technical University of Cluj-Napoca[.ro]