CODEWITHSUNDEEP
c++communicationpublish-subscribedata-distribution-serviceopensplice
user8400716
user8400716

Reputation:

DDS C++ - Data Distribution Service

I began to work with C# and I'm trying to test the code that follows for an dds app. I took it from: http://www.laas.fr/files/SLides-A_Corsaro.pdf

using System;
/**********************************************************
 * Definition for the TempSensorType
 **********************************************************/
enum TemperatureScale{
    CELSIUS,
    KELVIN,
    FAHRENHEIT
};
struct TempSensorType{
    short id;
    float temp;
    float hum;
    TemperatureScale scale;
};
#pragma keylist TempSensor id

/**********************************************************
 * Main
 **********************************************************/
static public void Main(string[] args){

    dds::Topic<TempSensorType> tsTopic(TempSensorTopic);
    dds::DataWriter<TempSensorType> dw(tsTopic);
    dds::DataReader<TempSensorType> dr(tsTopic);
    dds::SampleInfoSeq info;

    TempSensorSeq data;
    TempSensorType ts;
    ts = new TempSensorType { 1, 25.0F, 65.0F, CELSIUS };
    dw.write(ts);
    ts = new TempSensorType { 2, 26.0F, 70.0F, CELSIUS };
    dw.write(ts);
    ts = new TempSensorType { 3, 27.0F, 75.0F, CELSIUS };
    dw.write(ts);
    sleep(10);
    while (true){
        dr.read(data, info);
        for (int i = 0; i < data.length(); ++i)
            std::cout << data[i] << std::endl;
        sleep(1);
    }
    Console.WriteLine("Bonjour");
}

I start to understand the purpose of each piece of code. But I'm having doubts about the 4 first lines in the main, thoses that start with "dds::" and I think they are wrong - I'm getting "Identifier expected". If you could help it would be gratefull.

Upvotes: 0

Views: 2418

Answers (1)

Jepessen
Jepessen

Reputation: 12415

In my opinion it's not valid DDS code. It seems that you're missing the IDL definition (that should explain the #pragma) and the code.

You must at first create topics in a .idl file, then build id in order to create classes that you use in your program, and then use program libraries, and everything is missing.

Start to download a DDS implementation, like OpenDDS or Fast-RTPS. In addition to this you can check the OpenDDS section in this site from a working OpenDDS example from scratch.

Upvotes: 1

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