Write EthernetHeaderEx to blf files.

[Deepen M]

        I want to write Ethernet data to Blf file in Linux. Below logic i used to write in Window.
        But when i am trying to write it in Linux, i cant find Message ID. Can you please help me with a sample code ?


        BLF_VBLEthernetFrameEx_t ethernetEx;
        EthernetHeaderEx header;
        header.messageID = messageID;
        header.size = uint32_t(size);
        header.reverseBytes();

        ethernetEx.mHeader.mObjectTimeStamp = time_ns;
        ethernetEx.mChannel = channel;
        //ethernetEx.mFrameLength = 74 + uint16_t(size);  //20 bytes more data size
        ethernetEx.mFrameLength = 54 + uint16_t(size);    //Mu
//        std::cout << messageID << ethernetEx.mFrameLength << endl;        //SIL
//        system("pause");   //SIL
        ethernetEx.mFrameData = new BYTE[ethernetEx.mFrameLength];
        memcpy(ethernetEx.mFrameData, &header.Mac_ADAS, 54);
        memcpy(ethernetEx.mFrameData + 54, data, size);
        ethernetEx.mHeader.mBase.mObjectSize = offsetof(VBLEthernetFrameEx, mFrameData) + ethernetEx.mFrameLength;

        bool ok = BLWriteObject(hFile, &ethernetEx.mHeader.mBase);
        delete[] ethernetEx.mFrameData;
        return ok;

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[Deepen M]

I am using the following piece of code but i am getting data size and data as null.

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if (!hFile.is_open()) {
       std::cout << "Unable to open file" << std::endl;
       return 0;
   }

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auto* ethernet = new EthernetFrameEx;
ethernet->channel = channel;
ethernet->objectTimeStamp = time_ns;
ethernet->clientIndex = messageID; // Could not find any message ID related variable.
ethernet->frameLength = uint16_t(size);
ethernet->flags = 1; // I have tried with 1 also, but same result
ethernet->frameData.reserve(size);
memcpy(&(ethernet->frameData[0]), var, size);

hFile.write(ethernet);

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[Tobias Lorenz]

Sorry for the delayed answer. I think the way you use memcpy is not the recommended way for copying data to a vector. Can you try the following instead:

memcpy(ethernet->frameData.data(), var, size);

Maybe this solves the issue already.