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 Robotics / RCX / legOS / 1397
1396  |  1398
Subject: 
Re: Blockin LNP calls
Newsgroups: 
lugnet.robotics.rcx.legos
Date: 
Sun, 27 Aug 2000 19:55:59 GMT
Viewed: 
3335 times
  
> My code (removing some CORBA detail) looks like this:
> I have a class "nanOrbDemo_i" which has the following
> constructor:
> 
> inline nanOrbDemo_i(){
> 
>                 if ( lnp_init(0,0,0,0,0) ){
>                         cout << "LNP Init() Failed" <<endl;
>                 }
>                 else cout << "LNP Initialised" << endl;
>         };
> 
> Then in a particular method of this class, for debugging pusposes,
> I have added the following simple code:
> 
> //DEBUGGING ....
> 
>         char* testbuffer;
>         unsigned char testlen;
>         unsigned char testport;
>         unsigned char testhost;
>         unsigned char testaddress;
> 
>         testbuffer = "GIOP";
>         testlen = 4;
>         testport = 1;
>         testhost = 0;
>         testaddress = (testhost << 4 | testport);
> 
>         cout << "DEBUG: step 1 reached" << endl;
> 
>         result = lnp_addressing_write(testbuffer, testlen ,testaddress, 8);
> 
>         cout << "DEBUG: step 2 reached" << endl;
> 
>                 switch (result){
> 
>                         case TX_SUCCESS:
>                                 cout << "Transmitted" << endl;
>                         case TX_FAILURE:
>                                 cout << "Collision" << endl;
>                         default:
>                                 cout << "Error" <<endl;
>                 }
> 
>         cout << "DEBUG: step 3 reached" << endl;
> //END DEBUGGING
>         cout << "\nExiting method " << endl;
> 
> 
> 
> My code never reaches "debugging step 2". When I compile and run this, the
> data is successfully recieved by the RCX, but the lnp_addressing_write(..)
> call never returns .....
> 
> Does anyone have any ideas, please? It's driving me mad,

From the statement "data is received by the RCX" I assume you have this
problem on the host system. What OS are you using? Also, how does your
lnp_logical_write() routine look like?


Eddie C. Dost
ecd@skynet.be



Message has 1 Reply:
  Re: Blockin LNP calls
 
(...) Yes, the problem is on the host PC (running Red Hat 6.2). What I cant figure out is how identical code works fine if I instantiate the wrapper class in a simple demo app, but once I try calling it form within my CORBA server, it blocks on (...) (26 years ago, 28-Aug-00, to lugnet.robotics.rcx.legos)

Message is in Reply To:
  Re: Blockin LNP calls
 
HELP! I'll ellaborate a little on the details of my previous posting: My code (removing some CORBA detail) looks like this: I have a class "nanOrbDemo_i" which has the following constructor: inline nanOrbDemo_i(){ if ( lnp_init(0,0,0,0,0) ){ cout << (...) (26 years ago, 27-Aug-00, to lugnet.robotics.rcx.legos)

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