RE: problem regarding writing the value into a text file using open modelica

[Roshna]

Hi Adrian,

In this file I tried to write one read and write function using
externalfunctions. I put one value(say 50)in READ1.txt and my aim is to read
that value by the externalfunction and to write the same value in another
text file OUTFILE.txt. I am getting one value, but it is -1.923905.What is
happening here?
If I want to feed model input data externally, how to set/control the time?


-----Original Message-----
From: owner-openmodelicainter...@ida.liu.se
[mailto:owner-openmodelicainter...@ida.liu.se] On Behalf Of Adrian Pop
Sent: Saturday, October 10, 2009 8:26 PM
To: openmodelicainterest@ida.liu.se
Cc: nilanc...@cdactvm.in
Subject: Re: problem regarding writing the value into a text file using open
modelica


Hi Roshna,

You need to open the file in append
mode and don't rewind the file.
See the attached .zip.

ad...@kafka ~/dev/OpenModelicaMathCore/build/bin/Roshna
$ ../omc external.mos
1.000000
1.000000
1.000000
true
0
0
0
record SimulationResult
     resultFile = "ExternalLibraries_res.plt"
end SimulationResult;
0

Cheers,
Adrian Pop/

Roshna wrote:
>  
> 
>  
> 
>  
> 
> Hai all,
> 
>  
> 
> I want to write the value of one variable into a external text file 
> using external function interface while running the .mo file. So I 
> tried to modify the example program, which is given in users guide to 
> get the value printed.(please see the attachment).I am not getting any 
> errors, but the value is not getting printed even a single time. I did 
> the following way.
> 
>  
> 
> loadFile("C:/OpenModelica1.5.0/tmp/ExternalLibraries.mo")
> 
> true
> 
> *>>* system("gcc -c -o libExternalFunc1_ext.o ExternalFunc1.c");
> 
> *>>* system("gcc -c -o libExternalFunc2.a ExternalFunc2.c");
> 
> *>>* simulate(ExternalLibraries)
> 
> record SimulationResult
> 
> resultFile = "ExternalLibraries_res.plt"
> 
> end SimulationResult;
> 
> *>>* plot({x,y})
> 
> true
> 
>  
> 
>  
> 
> Can anybody help me?
> 
> Thanks n Regards,
> 
>  
> 
> Roshna C P
> 
> Control & Instrumentation Group,
> 
> Centre for Development of Advanced Computing,
> 
> Trivandrum, India.
> 
>  
> 
>  
> 
>  
> 


--
_____________________________________________________________________
Adrian Pop                      | PhD
Open Source Modelica Consortium | Technical Coordinator Department of
Computer Science  | http://www.ida.liu.se/~adrpo
Linköping University            | phone:+46 76 2343499/+46 13 285781
S-581 83 Linköping, Sweden      | fax:  +46 13 142231
OSMC & LiU/IDA/PELAB            | office: 3B:478
                


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50

ExternalFunc1.c
Description: Binary data

ExternalFunc1_ext.h
Description: Binary data

ExternalFunc2.c
Description: Binary data

ExternalFunc2.h
Description: Binary data

ExternalLibraries.mo
Description: Binary data

ExternalLibraries.mos
Description: Binary data

-1.923905