Unresolved external symbol related to QSerialPort

russjohn834

Hi all,

I have a class file , tetra_grip_api. I included this file with my project and I'm getting lots of linker tool error unresolved external symbol related to QSerialPort objects (build error screenshot attached)

tetra_grip_api.cpp file is this:

#include "tetra_grip_api.h"
#include "tetra_grip_reporter.h"
#include <QDebug>
#include <stdio.h>
#include <stdlib.h>
#include <QtSerialPort/QSerialPort>
#include <QtSerialPort/QSerialPortInfo>


#define _CRT_SECURE_NO_DEPRECATE

using namespace::std;

tetra_grip_api::tetra_grip_api(QObject *parent) : QObject(parent)
{


}

void tetra_grip_api::openSerialPort()//Vendor Identifier: 403 , Product Identifier: 6015
{
    serial = new QSerialPort();

    QList <QSerialPortInfo>stim;
    QSerialPortInfo info;
    foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts())
    {
       if(info.description() == "USB Serial Port" && info.manufacturer() == "FTDI" && QString::number(info.vendorIdentifier(), 16)== "403" && QString::number(info.productIdentifier(), 16)== "6015")
        {
           comPortName = info.portName();
        }
    }
    serial->setPortName(comPortName);
    serial->setBaudRate(1000000); 
    serial->setDataBits(QSerialPort::Data8);
    serial->setParity(QSerialPort::NoParity);
    serial->setStopBits(QSerialPort::OneStop);
    serial->setFlowControl(QSerialPort::HardwareControl); 
    if(serial->open(QIODevice::ReadWrite))
    {
        qDebug()<<"Open port OK";
    }
    else
    {
        qDebug()<<"Failed to open port. Error code: "<< serial->error() << serial->errorString();
    }


}

void tetra_grip_api::readData()
{


//   const QByteArray data = api.serial->readAll();


//    STIM_GUI_PROTOCOL_Process_Received_Bytes((uint8_t*)data.data(), (size_t)data.length());

}


void tetra_grip_api::closeSerialPort()
{
    if (serial->isOpen())
        serial->close();

}

void tetra_grip_reporter(STIM_GUI_TOPIC_T topic, uint8_t reg, uint32_t value)
{
    //emit api.tetraGripEvent(topic, reg, value);
}

and tetra_grip_api.h

#ifndef TETRA_GRIP_API_H
#define TETRA_GRIP_API_H

#include <QObject>
#include "Stim_includes/stim_gui_protocol.h"
#include "Stim_includes/stim_gui_protocol_decode.h"
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <string>
#include <QtSerialPort/QSerialPort>
#include <QtSerialPort/QSerialPortInfo>
#include <QLabel>
#include <QMessageBox>
#include <QTimer>

#define _CRT_SECURE_NO_DEPRECATE

class tetra_grip_api : public QObject
{
    Q_OBJECT

public:
    explicit tetra_grip_api(QObject *parent = nullptr);

     QSerialPort *serial = nullptr;


signals:


     void tetraGripEvent(STIM_GUI_TOPIC_T topic, uint8_t reg, uint32_t value);


public slots:

     void openSerialPort();
     void closeSerialPort();
     void readData();


private:

        QString comPortName;

};

//extern tetra_grip_api api;

#endif // TETRA_GRIP_API_H

I include this in my other project class files..
Can you able to spot anything bad from this information!?

mranger90

Show your .pro file please.

russjohn834

@mranger90. Thanks a lot. I just realized I didnt include serialport in my pro file. Now it is building ok :)

Solved Unresolved external symbol related to QSerialPort