Snap7 Undefined Reference to TS7Client::TS7Client()

SGaist

Hi,

As @aha_1980 suggested: are you linking against the library providing that class ?

ZekDe

Also I am using Mıngw32 also this is the project source webside .you can download and see ,little mb.

https://sourceforge.net/projects/snap7/files/1.4.2/

ZekDe

This is my .pro file

QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = untitled1
TEMPLATE = app

DEFINES += QT_DEPRECATED_WARNINGS

SOURCES +=
main.cpp
mainwindow.cpp
snap7.cpp

HEADERS +=
mainwindow.h \

FORMS +=
mainwindow.ui

win32: LIBS += -L$$PWD/./ -lsnap7

INCLUDEPATH += $$PWD/.
DEPENDPATH += $$PWD/.

ZekDe

into .h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
//#include "snap7.h"
class TS7Client;

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);

    void CliCompletion(void *usrPtr, int opCode, int opResult);
    void SysSleep(uint32_t Delay_ms);
    bool Check(int Result, const char * function);
    void MultiRead();
    void ListBlocks();
    void OrderCode();
    void CpuInfo();
    void CpInfo();
    void UnitStatus();
    void UploadDB0();
    void AsCBUploadDB0();
    void AsEWUploadDB0();
    void AsPOUploadDB0();
    void ReadSzl_0011_0000();
    bool CliConnect();
    void CliDisconnect();
    void PerformTests();
    void Summary();
    //void hexdump(void *mem, unsigned int len);

    ~MainWindow();

private:
    Ui::MainWindow *ui;

         TS7Client *Client;

         uint8_t Buffer[65536]; // 64 K buffer
         int SampleDBNum = 1000;

         char *Address = (char*)"192.168.0.1" ;     // PLC IP Address
         int Rack=0,Slot=1; // Default Rack and Slot

         int ok = 0; // Number of test pass
         int ko = 0; // Number of test failure

         bool JobDone=false;
         int JobResult=0;
};

#endif // MAINWINDOW_H

into .cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <stdio.h>
#include <stdlib.h>
#include "QThread"
#include "QString"
#include "snap7.h"

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent),ui(new Ui::MainWindow)
{
    ui->setupUi(this);

 TS7Client *abc = new TS7Client();


if (CliConnect())
   {
       PerformTests();
       CliDisconnect();
   }

   delete Client;
   Summary();
}

void MainWindow::CliCompletion(void *usrPtr, int opCode, int opResult)
{
    JobResult=opResult;
    JobDone = true;
}

/**********************************************************************************************/
// SysSleep (copied from snap_sysutils.cpp) multiplatform millisec sleep
//------------------------------------------------------------------------------
void MainWindow::SysSleep(longword Delay_ms)
{
    QThread::msleep(Delay_ms);
}

bool MainWindow::Check(int Result, const char *function)
{
    ui->textEdit->append("\n");
        ui->textEdit->append("+-----------------------------------------------------\n");
        ui->textEdit->append(function);
        ui->textEdit->append("+-----------------------------------------------------\n");
        if (Result==0) {
            ui->textEdit->append("| Result         : OK\n");
            ui->textEdit->append("| Execution time : " + QString::number(Client->ExecTime()));
            ui->textEdit->append("+-----------------------------------------------------\n");
            ok++;
        }
        else {
            ui->textEdit->append("| ERROR !!! \n");
            if (Result<0)
                ui->textEdit->append("| Library Error (-1)\n");
            else
            ui->textEdit->append(tr("| %1").arg(CliErrorText(Result).c_str()));
            ui->textEdit->append("+-----------------------------------------------------\n");
            ko++;
        }
        return Result==0;
}

void MainWindow::MultiRead()
{
    // Multiread buffers
        byte MB[16]; // 16 Merker bytes
        byte EB[16]; // 16 Digital Input bytes
        byte AB[16]; // 16 Digital Output bytes
        word TM[8];  // 8 timers
        word CT[8];  // 8 counters

        // Prepare struct
        TS7DataItem Items[5];

        // NOTE : *AMOUNT IS NOT SIZE* , it's the number of items
        // Merkers
        Items[0].Area     =S7AreaMK;
        Items[0].WordLen  =S7WLByte;
        Items[0].DBNumber =0;        // Don't need DB
        Items[0].Start    =0;        // Starting from 0
        Items[0].Amount   =16;       // 16 Items (bytes)
        Items[0].pdata    =&MB;
        // Digital Input bytes
        Items[1].Area     =S7AreaPE;
        Items[1].WordLen  =S7WLByte;
        Items[1].DBNumber =0;        // Don't need DB
        Items[1].Start    =0;        // Starting from 0
        Items[1].Amount   =16;       // 16 Items (bytes)
        Items[1].pdata    =&EB;
        // Digital Output bytes
        Items[2].Area     =S7AreaPA;
        Items[2].WordLen  =S7WLByte;
        Items[2].DBNumber =0;        // Don't need DB
        Items[2].Start    =0;        // Starting from 0
        Items[2].Amount   =16;       // 16 Items (bytes)
        Items[2].pdata    =&AB;
        // Timers
        Items[3].Area     =S7AreaTM;
        Items[3].WordLen  =S7WLTimer;
        Items[3].DBNumber =0;        // Don't need DB
        Items[3].Start    =0;        // Starting from 0
        Items[3].Amount   =8;        // 8 Timers
        Items[3].pdata    =&TM;
        // Counters
        Items[4].Area     =S7AreaCT;
        Items[4].WordLen  =S7WLCounter;
        Items[4].DBNumber =0;        // Don't need DB
        Items[4].Start    =0;        // Starting from 0
        Items[4].Amount   =8;        // 8 Counters
        Items[4].pdata    =&CT;

        int res=Client->ReadMultiVars(&Items[0],5);

        if (Check(res,"Multiread Vars"))
        {
           // Result of Client->ReadMultivars is the "global result" of
           // the function, it's OK if something was exchanged.

           // But we need to check single Var results.
           // Let shall suppose that we ask for 5 vars, 4 of them are ok but
           // the 5th is inexistent, we will have 4 results ok and 1 not ok.

           ui->textEdit->append("Dump MB0..MB15 - Var Result : " + QString::number(Items[0].Result));
//           if (Items[0].Result==0)
//               hexdump(&MB,16);
           ui->textEdit->append("Dump EB0..EB15 - Var Result : " + QString::number(Items[1].Result));
//           if (Items[1].Result==0)
//               hexdump(&EB,16);
           ui->textEdit->append("Dump AB0..AB15 - Var Result : " + QString::number(Items[2].Result));
//           if (Items[2].Result==0)
//               hexdump(&AB,16);
           ui->textEdit->append("Dump T0..T7 - Var Result : " + QString::number(Items[3].Result));
           /*if (Items[3].Result==0)
               hexdump(&TM,16); */        // 8 Timers -> 16 bytes
           ui->textEdit->append("Dump Z0..Z7 - Var Result : " + QString::number(Items[4].Result));
//           if (Items[4].Result==0)
//               hexdump(&CT,16);         // 8 Counters -> 16 bytes
        }
}

void MainWindow::ListBlocks()
{
    TS7BlocksList List;
        int res=Client->ListBlocks(&List);
        if (Check(res,"List Blocks in AG"))
        {
            ui->textEdit->append("  OBCount  : "+ QString::number(List.OBCount));
            ui->textEdit->append("  FBCount  : "+ QString::number(List.FBCount));
            ui->textEdit->append("  FCCount  : "+ QString::number(List.FCCount));
            ui->textEdit->append("  SFBCount : "+ QString::number(List.SFBCount));
            ui->textEdit->append("  SFCCount : "+ QString::number(List.SFCCount));
            ui->textEdit->append("  DBCount  : "+ QString::number(List.DBCount));
            ui->textEdit->append("  SDBCount : "+ QString::number(List.SDBCount));
        }
}

void MainWindow::OrderCode()
{
    TS7OrderCode Info;
         int res=Client->GetOrderCode(&Info);
         if (Check(res,"Catalog"))
         {

              ui->textEdit->append(tr("Order Code : %1").arg(Info.Code));
              ui->textEdit->append(tr("Version : %1.%2.%3")
               .arg(QString::number(Info.V1)).arg(QString::number(Info.V2)).QString::number(Info.V3));
         }
}

void MainWindow::CpuInfo()
{
        TS7CpuInfo Info;
         int res=Client->GetCpuInfo(&Info);
         if (Check(res,"Unit Info"))
         {
               ui->textEdit->append(tr("  Module Type Name : %1").arg(Info.ModuleTypeName));
               ui->textEdit->append(tr("  Serial Number    : %1").arg(Info.SerialNumber));
               ui->textEdit->append(tr("  AS Name          : %1").arg(Info.ASName));
               ui->textEdit->append(tr("  Module Name      : %1").arg(Info.ModuleName));
         }
}

void MainWindow::CpInfo()
{
    TS7CpInfo Info;
         int res=Client->GetCpInfo(&Info);
         if (Check(res,"Communication processor Info"))
         {
              ui->textEdit->append("  Max PDU Length   : " + QString::number(Info.MaxPduLengt) + " bytes");
              ui->textEdit->append("  Max Connections  : " + QString::number(Info.MaxConnections));
              ui->textEdit->append("  Max MPI Rate     : " + QString::number(Info.MaxMpiRate) + " bps");
              ui->textEdit->append("  Max Bus Rate     : " + QString::number(Info.MaxBusRate) + " bps");
         };
}
//------------------------------------------------------------------------------
// PLC Status
//------------------------------------------------------------------------------
void MainWindow::UnitStatus()
{
    int res=0;
         int Status=Client->PlcStatus();
         if (Check(res,"CPU Status"))
         {
              switch (Status)
              {
                  case S7CpuStatusRun : printf("  RUN\n"); break;
                  case S7CpuStatusStop: printf("  STOP\n"); break;
                  default             : printf("  UNKNOWN\n"); break;
              }
         }
}

//------------------------------------------------------------------------------
// Upload DB0 (surely exists in AG)
//------------------------------------------------------------------------------

void MainWindow::UploadDB0()
{
         int Size = sizeof(Buffer); // Size is IN/OUT par
                                    // In input it tells the client the size available
                                    // In output it tells us how many bytes were uploaded.
         int res=Client->Upload(Block_SDB, 0, &Buffer, &Size);
         if (Check(res,"Block Upload (SDB 0)"))
         {
              ui->textEdit_2->append(tr("Dump (%1 bytes)").arg(Size));
              //hexdump(&Buffer,Size);
         }
}
//------------------------------------------------------------------------------
// Async Upload DB0 (using callback as completion trigger)
//------------------------------------------------------------------------------
void MainWindow::AsCBUploadDB0()
{
    int Size = sizeof(Buffer); // Size is IN/OUT par
                                    // In input it tells the client the size available
                                    // In output it tells us how many bytes were uploaded.
         JobDone=false;
         int res=Client->AsUpload(Block_SDB, 0, &Buffer, &Size);

         if (res==0)
         {
             while (!JobDone)
             {
                 SysSleep(100);
             }
             res=JobResult;
         }

         if (Check(res,"Async (callback) Block Upload (SDB 0)"))
         {
               ui->textEdit_2->append(tr("Dump (%1 bytes) : ").arg(QString::number(Size)));
             // hexdump(&Buffer,Size);
         }
}

void MainWindow::AsEWUploadDB0()
{
    int Size = sizeof(Buffer); // Size is IN/OUT par
                                    // In input it tells the client the size available
                                    // In output it tells us how many bytes were uploaded.
         JobDone=false;
         int res=Client->AsUpload(Block_SDB, 0, &Buffer, &Size);

         if (res==0)
         {
             res=Client->WaitAsCompletion(3000);
         }

         if (Check(res,"Async (Wait event) Block Upload (SDB 0)"))
         {
               ui->textEdit_2->append(tr("Dump (%1 bytes) : ").arg(QString::number(Size)));
             // hexdump(&Buffer,Size);
         }
}
//------------------------------------------------------------------------------
// Async Upload DB0 (using polling as completion trigger)
//------------------------------------------------------------------------------
void MainWindow::AsPOUploadDB0()
{
    int Size = sizeof(Buffer); // Size is IN/OUT par
                                    // In input it tells the client the size available
                                    // In output it tells us how many bytes were uploaded.
         JobDone=false;
         int res=Client->AsUpload(Block_SDB, 0, &Buffer, &Size);

         if (res==0)
         {
             while (!Client->CheckAsCompletion(&res))
             {
                 SysSleep(100);
             };
         }

         if (Check(res,"Async (polling) Block Upload (SDB 0)"))
         {
               ui->textEdit_2->append(tr("Dump (%1 bytes) : ").arg(Size));
             // hexdump(&Buffer,Size);
         }
}
//------------------------------------------------------------------------------
// Read a sample SZL Block
//------------------------------------------------------------------------------
void MainWindow::ReadSzl_0011_0000()
{
         PS7SZL SZL = PS7SZL(&Buffer);  // use our buffer casted as TS7SZL
         int Size = sizeof(Buffer);
         // Block ID 0x0011 IDX 0x0000 normally exists in every CPU
         int res=Client->ReadSZL(0x0011, 0x0000, SZL, &Size);
         if (Check(res,"Read SZL - ID : 0x0011, IDX 0x0000"))
         {
            ui->textEdit_2->append(tr("  LENTHDR : %1").arg(SZL->Header.LENTHDR));
            ui->textEdit_2->append(tr("  N_DR    : %1").arg(SZL->Header.N_DR));
            ui->textEdit_2->append(tr("Dump (%1 bytes) ").arg(Size));
            //hexdump(&Buffer,Size);
         }
}
//------------------------------------------------------------------------------
// Unit Connection
//------------------------------------------------------------------------------
bool MainWindow::CliConnect()
{
    int res = Client->ConnectTo(Address,Rack,Slot);
        if (Check(res,"UNIT Connection")) {
              ui->textEdit_2->append(tr("  Connected to   : %1 (Rack= %2, Slot= %3)").arg(Address).arg(Rack).arg(Slot));
              ui->textEdit_2->append(tr("  PDU Requested  : %1 bytes").arg(Client->PDURequested()));
              ui->textEdit_2->append(tr("  PDU Negotiated : %1 bytes").arg(Client->PDULength()));
        };
        return res==0;
}
//------------------------------------------------------------------------------
// Unit Disconnection
//------------------------------------------------------------------------------
void MainWindow::CliDisconnect()
{
    Client->Disconnect();
}
//------------------------------------------------------------------------------
// Perform readonly tests, no cpu status modification
//------------------------------------------------------------------------------
void MainWindow::PerformTests()
{
         OrderCode();
         CpuInfo();
         CpInfo();
         UnitStatus();
         ReadSzl_0011_0000();
         UploadDB0();
         AsCBUploadDB0();
         AsEWUploadDB0();
         AsPOUploadDB0();
         MultiRead();
}
//------------------------------------------------------------------------------
// Tests Summary
//------------------------------------------------------------------------------
void MainWindow::Summary()
{
    ui->textEdit_2->append("+-----------------------------------------------------\n");
    ui->textEdit_2->append("| Test Summary ");
    ui->textEdit_2->append("+-----------------------------------------------------\n");
    ui->textEdit_2->append(tr("| Performed : %1").arg(ok+ko));
    ui->textEdit_2->append(tr("| Passed    : %1").arg(ok));
    ui->textEdit_2->append(tr("| Failed    : %1").arg(ko));
}

/**********************************************************************************************/
#ifndef HEXDUMP_COLS
#define HEXDUMP_COLS 16
#endif
//void MainWindow::hexdump(void *mem, unsigned int len)
//{
//        unsigned int i, j;

//        for(i = 0; i < len + ((len % HEXDUMP_COLS) ? (HEXDUMP_COLS - len % HEXDUMP_COLS) : 0); i++)
//        {
//                /* print offset */
//                if(i % HEXDUMP_COLS == 0)
//                {
//                        u(ui->textEdit,"0x%04x: ", i);
//                        ui->textEdit_2->setText();
//                }

//                /* print hex data */
//                if(i < len)
//                {
//                        printf("%02x ", 0xFF & ((char*)mem)[i]);
//                }
//                else /* end of block, just aligning for ASCII dump */
//                {
//                        printf("   ");
//                }

//                /* print ASCII dump */
//                if(i % HEXDUMP_COLS == (HEXDUMP_COLS - 1))
//                {
//                        for(j = i - (HEXDUMP_COLS - 1); j <= i; j++)
//                        {
//                                if(j >= len) /* end of block, not really printing */
//                                {
//                                        putchar(' ');
//                                }
//                                else if(isprint((((char*)mem)[j] & 0x7F))) /* printable char */
//                                {
//                                        putchar(0xFF & ((char*)mem)[j]);
//                                }
//                                else /* other char */
//                                {
//                                        putchar('.');
//                                }
//                        }
//                        putchar('\n');
//                }
//        }
//}

MainWindow::~MainWindow()
{
    delete ui;
}

SGaist

Which option are you currently using ?

Embedding the library or linking to it ?

If the later, did you compile it with the same compiler used for Qt ?

ZekDe

I didnt understan excatly what you mean.I wanna use link the .lib so that I will use just 3 files .h,.cpp,.lib but I suppose I have to use .dll as well in same file with .lib adding exectuble folder(I doesnt work,like you see Qt create a debug file and .exe after the compile )

ZekDe

Okay okay, when I create the this object in mainwindow.h ,this is being creating but I couldn't reach it from in mainwinbdow.cpp

into mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include "snap7.h"


namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);

    void CliCompletion(void *usrPtr, int opCode, int opResult);
    void SysSleep(uint32_t Delay_ms);
    bool Check(int Result, const char * function);
    void MultiRead();
    void ListBlocks();
    void OrderCode();
    void CpuInfo();
    void CpInfo();
    void UnitStatus();
    void UploadDB0();
    void AsCBUploadDB0();
    void AsEWUploadDB0();
    void AsPOUploadDB0();
    void ReadSzl_0011_0000();
    bool CliConnect();
    void CliDisconnect();
    void PerformTests();
    void Summary();
    //void hexdump(void *mem, unsigned int len);

    ~MainWindow();

private:
    Ui::MainWindow *ui;

         TS7Client *Client = new TS7Client();

         uint8_t Buffer[65536]; // 64 K buffer
         int SampleDBNum = 1000;

         char *Address = (char*)"192.168.0.1" ;     // PLC IP Address
         int Rack=0,Slot=1; // Default Rack and Slot

         int ok = 0; // Number of test pass
         int ko = 0; // Number of test failure

         bool JobDone=false;
         int JobResult=0;
};

#endif // MAINWINDOW_H

into .cpp```
0_1516196444568_efe5b0dc-d8d7-481d-a4c8-9b9eb9a7aad1-image.png //your code here

ZekDe

I am missing something ,I couldnt get to used C++ yet

ZekDe

![alt text]( 0_1516196914626_2e46ef7a-b7c6-47f9-aebd-137eced44bbc-image.png image url)

0_1516196938513_0c459213-da27-4662-ad9b-38e038f66077-image.png

ZekDe

When I add the source files ,it worked properly.Also this lines is being added,I dont know why

win32:LIBS += C:\Qt\Tools\mingw530_32\i686-w64-mingw32\lib\libws2_32.a
win32:LIBS += C:\Qt\Tools\mingw530_32\i686-w64-mingw32\lib\libwinmm.a

mrjj

@ZekDe
its runtime libs from the compiler.

ZekDe

well, how can I reliase it if I use any libs

mrjj

@ZekDe
In what way realize ?
It surely uses its runtime files.

ZekDe

when I create a new project there are no these lines.A guy give me a sample project and these lines were in it.
If he dont give me a project .How will I add these line?

ZekDe

Hmm I have looked in Makefile and I encounter this line,
LIBS = -L"$(MINGW)/lib" -static-libgcc --no-export-all-symbols --add-stdcall-alias $(MINGW)/lib/libws2_32.a $(MINGW)/lib/libwinmm.a $(MINGW)/lib/gcc/mingw32/$(MINREL)/libstdc++.a
INCS = -I"$(MINGW)/include" -I"../../../src/sys" -I"../../../src/core" -I"../../../src/lib"

Previously I realised , there is no files in mingw32 5.3.0 but libstdc++ is available
Also existing a this writing in webside, "Libstdc++ are statically linked, so you don’t need to distribute them with your software" I suppose it means that.
I do not have enough knowledge.

mrjj

Hi
Statically linked means it is put inside and hence requires no DLL to
be included with the app.