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QTAndroid protobuf with QT creator

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #2

    Hi and welcome to devnet,

    What exact error are you getting ?

    Did you try to build your project for your desktop machine ?

    Can you provide a minimal example project that people can attempt to build ?

    Interested in AI ? www.idiap.ch
    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

    A 1 Reply Last reply
    0
    • SGaistS SGaist

      Hi and welcome to devnet,

      What exact error are you getting ?

      Did you try to build your project for your desktop machine ?

      Can you provide a minimal example project that people can attempt to build ?

      A Offline
      A Offline
      AMOL
      wrote on last edited by AMOL
      #3

      @sgaist hi and thank you for your response ,
      Actully I am trying to build my project for android phones (QTAndroid),
      My main Question is how to compile my .proto file for QTAndroid which gives .pb.cc and .pb.h in return
      I followed this link :
      https://github.com/protocolbuffers/protobuf/issues/5279

      after creating source tree I run below command to generate pb.cc and pb.h :
      ./protoc --cpp_out=./ myfile.proto

      but protoc file is not generating pb.cc and pb.h file.
      '

      My proto file code is given below:

      syntax = "proto2";

      package DOP;

      // Defines request that a tag/anchor may receive via UART or BT SPP
      enum ReqType {
      DFUMODE = 0; // Device must switch to DFU mode and reset
      SETUWBCFG = 1; // Set UWB network configuration parameters
      GETUWBCFG = 2; // Get current UWB network configuration parameters
      }

      // Defines types of responses to a request message
      enum RespType {
      ACK = 0; // ACK the successfull execution of a request
      NACK = 1; // Request was not executed
      RESPUWBCFG = 2; // Current UWB configuraion data
      }

      message Request {
      required uint32 req_type = 1; // Must be one of ReqType
      required uint32 req_ID = 2; // A number that would help the requesting side to indentify the reply later
      }

      message Response {
      required uint32 resp_type = 1; // Must be one of RespType
      required uint32 req_ID = 2; // The ID of the request to which we are replying

      // TODO: Add field for response parameters (like UWB configuration)

      }

      message Cycle {

      message Imu {
        required uint32 x = 1;	   
        required uint32 y = 2;
        required uint32 z = 3;
      }
      
      message Tag {
        required uint32 tagid     = 1;   // ID of the Tag which replied to the corresponding Anchor (current Tag). Number must be unique inside the network - 65536 max number of tags.
        required uint32 tof1      = 2;   // Time-of-flight from the corresponding Anchor to the current Tag, calculated during tsync1 and tsync2 slots accordingly. In in uS.
        required uint32 tof2      = 3;	 
      
        optional uint32 vbat      = 4;   // Battery voltage, 6bit, 25mV resolution, range between 2.650 V 4.250 V
        optional uint32 rssi      = 5;   // P46: DW1000 User Manual 2.03. Practical range -99...-67 dBm per  0.5dBm  
        optional uint32 sensor    = 6;   // Data from internal sensors, For pressure sensor - Range 0 to 1.28bar steps 0.02bar
        optional Imu 	  acc_data  = 7;   // Linear x,y, z acceleration from the Tag IMU 
        optional Imu	  gyro_data = 8;   // x,y, z data from the Tag IMU
        optional Imu 	  mag_data  = 9;   // 
        	
      }
      
      // Data collected by an Anchor
      message Anchor {
        required uint32 anchorid  = 1;   // ID of the Anchor which polled the Tag whos data are included in this message (current Anchor).
        required Tag tag_data     = 2;
      }
      
      required uint32 cycleid   = 1;   // ID of the current offload cycle. Wraps up to 0 when reaching the maximum.
      repeated Anchor anc_data  = 2;
      

      }

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #4

        One thing you can to is install the protobuf compiler package from your distribution and use that one. It will generate the files that you can then use for your project.

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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        • A Offline
          A Offline
          AMOL
          wrote on last edited by
          #5

          I used protobuf but it is for Windows or Linux not for Android I want to cross compile it with Android then I can us it

          Pablo J. RoginaP 2 Replies Last reply
          0
          • A AMOL

            I used protobuf but it is for Windows or Linux not for Android I want to cross compile it with Android then I can us it

            Pablo J. RoginaP Offline
            Pablo J. RoginaP Offline
            Pablo J. Rogina
            wrote on last edited by
            #6

            @amol said in QTAndroid protobuf with QT creator:

            I want to cross compile it with Android then I can us it

            From the issue you pointed before, have you check this comment? It says it succeeded, and it describes all the tool versions for its environment (Clang, NDK, Qt, etc.)

            Upvote the answer(s) that helped you solve the issue
            Use "Topic Tools" button to mark your post as Solved
            Add screenshots via postimage.org
            Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

            A 1 Reply Last reply
            0
            • Pablo J. RoginaP Pablo J. Rogina

              @amol said in QTAndroid protobuf with QT creator:

              I want to cross compile it with Android then I can us it

              From the issue you pointed before, have you check this comment? It says it succeeded, and it describes all the tool versions for its environment (Clang, NDK, Qt, etc.)

              A Offline
              A Offline
              AMOL
              wrote on last edited by
              #7

              @pablo-j-rogina yes I used it but it's for clang I want for armabi-7

              Pablo J. RoginaP 1 Reply Last reply
              0
              • A AMOL

                @pablo-j-rogina yes I used it but it's for clang I want for armabi-7

                Pablo J. RoginaP Offline
                Pablo J. RoginaP Offline
                Pablo J. Rogina
                wrote on last edited by
                #8

                @amol said in QTAndroid protobuf with QT creator:

                it's for clang I want for armabi-7

                It looks you're mixing things up.

                Clang is a compiler (tool) while armabi-7 is a processor architecture (platform)
                A compiler creates an executable program for a particular platform.

                As you can see from that comment, Clang should allow you to build the required protobuf file(s) for your platform

                Upvote the answer(s) that helped you solve the issue
                Use "Topic Tools" button to mark your post as Solved
                Add screenshots via postimage.org
                Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

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                • A Offline
                  A Offline
                  AMOL
                  wrote on last edited by AMOL
                  #9

                  Ohh, then after building this I get protoc file from which I can make pb.cc and pb.h file but that protoc file gives error as excutable format error

                  If you have any steps for how to make protoc for Android then please provide.

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #10

                    protoc just generate files in the programming language you choose. There's nothing special here, as I already suggested, install the protoc compiler from your distribution and generate the file with it.

                    Interested in AI ? www.idiap.ch
                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                    • A Offline
                      A Offline
                      AMOL
                      wrote on last edited by AMOL
                      #11

                      Ok but issue then issue is after creating my pb.cc and pb.h file and added to qt creator is gives error as undefined reference to Google protobuf
                      Then can anyone provide steps for adding protobuf .so files and pb.cc pb.h files to qt creator and then run on Android

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                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #12

                        Did you add the

                        LIBS += 
                        

                        statement in your .pro file to link to the library ?

                        Interested in AI ? www.idiap.ch
                        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                        • A Offline
                          A Offline
                          AMOL
                          wrote on last edited by
                          #13

                          @sgaist said in QTAndroid protobuf with QT creator:

                          LIBS +=

                          My proto file look like this:

                          #-------------------------------------------------

                          Project created by QtCreator 2016-03-22T07:38:29

                          #-------------------------------------------------

                          QT += core gui bluetooth
                          CONFIG += c++11

                          greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

                          TARGET = BLETester
                          TEMPLATE = app

                          SOURCES += main.cpp
                          acp.pb.cc
                          dfuservice.cpp
                          mainwindow.cpp
                          bleinterface.cpp
                          utils.cpp

                          HEADERS += mainwindow.h
                          acp.pb.h
                          bleinterface.h
                          dfuservice.h
                          lib-qt-qml-tricks/src/qqmlhelpers.h
                          lib-qt-qml-tricks/src/qqmlhelpers.h
                          utils.h

                          FORMS += mainwindow.ui

                          win32:INCLUDEPATH += "$$PWD\google"

                          RESOURCES +=
                          resources.qrc

                          android{
                          INCLUDEPATH += F:\QT_android\compile\protobuf-3.9.1\src
                          LIBS += -L"F:\QT_android\compile\protobuf-3.9.1\src\protobuff_android"
                          -lprotobuf
                          -lprotobuf-lite
                          -lprotoc
                          }

                          Turn off ALL warning for the project

                          win32:CONFIG += warn_off

                          contains(ANDROID_TARGET_ARCH,armeabi-v7a) {
                          ANDROID_EXTRA_LIBS =
                          $$PWD/../protobuf_android/libprotobuf.so
                          $$PWD/../protobuf_android/libprotobuf-lite.so
                          $$PWD/../protobuf_android/libprotoc.so
                          }

                          DISTFILES +=
                          acp.proto

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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #14

                            Are you sure you have built protobuf for the correct architecture ? 32 vs 64 bit for example ?

                            Interested in AI ? www.idiap.ch
                            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                            • A Offline
                              A Offline
                              AMOL
                              wrote on last edited by
                              #15

                              @sgaist said in QTAndroid protobuf with QT creator:

                              distribution

                              @sgaist said in QTAndroid protobuf with QT creator:

                              protoc just generate files in the programming language you choose. There's nothing special here, as I already suggested, install the protoc compiler from your distribution and generate the file with it.

                              yes
                              as you said, i have installed protobuf compiler on Linux 64 bit and from that only I am generating pb.cc and pb.h files

                              Is that correct?

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                              • A Offline
                                A Offline
                                AMOL
                                wrote on last edited by
                                #16

                                @SGaist any comment on this???

                                1 Reply Last reply
                                0
                                • A Offline
                                  A Offline
                                  AMOL
                                  wrote on last edited by AMOL
                                  #17

                                  After compiling from protobuf-cpp-3.9.1 and adding pb.cc and pb.h to project I get this error
                                  0_1567683866738_a8f75ad0-3bfc-4f60-bcb5-f433b61fe52f-image.png

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                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #18

                                    Start by just building the protobuf related files so you ensure that you have that stuff working correctly. I would even start first by building for your desktop OS. That way you ensure that this part is working correctly before going forward with Android.

                                    Interested in AI ? www.idiap.ch
                                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                    • A Offline
                                      A Offline
                                      AMOL
                                      wrote on last edited by
                                      #19

                                      Yes, This application is hybrid application (ios,android and windows)
                                      for windows desktop application protobuf is working correctly without error,
                                      but when I change my kit to android then it gives above error

                                      1 Reply Last reply
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                                      • A AMOL

                                        I used protobuf but it is for Windows or Linux not for Android I want to cross compile it with Android then I can us it

                                        Pablo J. RoginaP Offline
                                        Pablo J. RoginaP Offline
                                        Pablo J. Rogina
                                        wrote on last edited by
                                        #20

                                        @amol said in QTAndroid protobuf with QT creator:

                                        I used protobuf but it is for Windows or Linux

                                        Ok, so you're somehow experienced with that technology.

                                        For me that I'm not, could you please explain how to use protobuf in a general way, and I guess that in the process you might figure out what you're doing differently or not yet doing for Android?

                                        In addition, when working with a 3rd party library or files that you want to use in a Qt application for Android the basic requirement is that the library is compiled for any of the Android platforms (usually arm6, arm7 and lately arm8) and that process is usually carried on separately from Qt Creator via the NDK (talking about a C++ library or files). Once you have the (shared) objects created with the NDK you place them in a proper location within the Qt project folder structure and then Qt Creator is finally able to create the Android app and deploy to the device configured in your kit.

                                        So talking about protobuf it couldn't be that different. You need to create with NDK whatever components are required (either a .so or files .cc and .h) and then add such files to your Qt project

                                        Upvote the answer(s) that helped you solve the issue
                                        Use "Topic Tools" button to mark your post as Solved
                                        Add screenshots via postimage.org
                                        Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

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