Having SIGSEGV when setting serial port name
Solved
Qt Creator and other tools
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First of all, sorry if my English is not very comprehensive, it's a little bit rusty, and if I made some error while describing my problem, it's my first post here.
I'm having trouble when I try to execute the following method:
serialPort->setPortName(port);The debugger returns a SIGSEGV error, and when I enter the function that contains the error I get the following error line:
0x64781f02 <+0x0004> 8b 59 04 mov 0x4(%ecx),%ebxHeader file:
#ifndef SERIAL_H #define SERIAL_H #include <QtCore> #include <QString> #include <QSerialPort> class Serial : public QObject { Q_OBJECT public: Serial(); QMutex mutex; bool isConnected(); bool serialConnect(); bool setup(); bool send(QString); bool connected; QString receive(); void closeConnection(); signals: void serialReceived(QString); private slots: void onSerialReceived(); }; #endif // SERIAL_HSource file:
static QSerialPort *serialPort; Serial::Serial() { connected = false; } bool Serial::serialConnect() { foreach (const QSerialPortInfo &devinfo, QSerialPortInfo::availablePorts()) { QSerialPort devSerial; devSerial.setPort(devinfo); if(devSerial.open(QIODevice::ReadWrite)) { if(devinfo.description() == "Arduino Uno" && devinfo.manufacturer() == "Arduino LLC (www.arduino.cc)") { QString port = devinfo.portName(); qDebug() << "Serial found: " << port; serialPort->setPortName(port); //This is where I get the error devSerial.close(); if(setup()) { qDebug() << "Setup completed."; connected = true; connect(serialPort, SIGNAL(readyRead()), this, SLOT(onSerialReceived())); return true; }else { qDebug() << "Setup failed."; return false; } } } } } bool Serial::setup() { try { serialPort->setBaudRate(QSerialPort::Baud115200); serialPort->setDataBits(QSerialPort::Data8); serialPort->setParity(QSerialPort::NoParity); serialPort->setStopBits(QSerialPort::OneStop); serialPort->setFlowControl(QSerialPort::NoFlowControl); if(!serialPort->open(QIODevice::ReadWrite)){ qDebug() << "Can't open serialport"; return false; } return true; } catch (QException e) { return false; } }QSerialPort source (if needed):
/ Function: QSerialPort::QSerialPort(QObject*) 0x64781eee <+0x0038> c7 43 08 00 00 00 00 movl $0x0,0x8(%ebx) 0x64781ef5 <+0x003f> 83 c4 14 add $0x14,%esp 0x64781ef8 <+0x0042> 5b pop %ebx 0x64781ef9 <+0x0043> 5e pop %esi 0x64781efa <+0x0044> c2 04 00 ret $0x4 Function: _ZN11QSerialPortC2EP7QObject 0x64781efd <+0x0047> 90 nop Function: QSerialPort::setPortName(QString const&) 0x64781efe 53 push %ebx 0x64781eff <+0x0001> 83 ec 28 sub $0x28,%esp 0x64781f02 <+0x0004> 8b 59 04 mov 0x4(%ecx),%ebx //Error presents in this line 0x64781f05 <+0x0007> 8d 44 24 1c lea 0x1c(%esp),%eax 0x64781f09 <+0x000b> 8b 54 24 30 mov 0x30(%esp),%edx 0x64781f0d <+0x000f> 89 54 24 04 mov %edx,0x4(%esp) 0x64781f11 <+0x0013> 89 04 24 mov %eax,(%esp) 0x64781f14 <+0x0016> e8 57 53 00 00 call 0x64787270 <QSerialPortInfoPrivate::portNameToSystemLocation(QString const&)> 0x64781f19 <+0x001b> 8b 83 9c 00 00 00 mov 0x9c(%ebx),%eax 0x64781f1f <+0x0021> 8b 54 24 1c mov 0x1c(%esp),%edx 0x64781f23 <+0x0025> 89 93 9c 00 00 00 mov %edx,0x9c(%ebx) 0x64781f29 <+0x002b> 89 44 24 1c mov %eax,0x1c(%esp) 0x64781f2d <+0x002f> 89 c2 mov %eax,%edx 0x64781f2f <+0x0031> 8b 00 mov (%eax),%eax 0x64781f31 <+0x0033> 85 c0 test %eax,%eax 0x64781f33 <+0x0035> 74 16 je 0x64781f4b <QSerialPort::setPortName(QString const&)+77> 0x64781f35 <+0x0037> 83 f8 ff cmp $0xffffffff,%eax 0x64781f38 <+0x003a> 74 18 je 0x64781f52 <QSerialPort::setPortName(QString const&)+84> 0x64781f3a <+0x003c> b8 ff ff ff ff mov $0xffffffff,%eax 0x64781f3f <+0x0041> f0 0f c1 02 lock xadd %eax,(%edx) 0x64781f43 <+0x0045> 83 f8 01 cmp $0x1,%eax 0x64781f46 <+0x0048> 0f 95 c0 setne %al 0x64781f49 <+0x004b> eb 0c jmp 0x64781f57 <QSerialPort::setPortName(QString const&)+89> 0x64781f4b <+0x004d> b8 00 00 00 00 mov $0x0,%eax 0x64781f50 <+0x0052> eb 05 jmp 0x64781f57 <QSerialPort::setPortName(QString const&)+89> 0x64781f52 <+0x0054> b8 01 00 00 00 mov $0x1,%eax 0x64781f57 <+0x0059> 84 c0 test %al,%al 0x64781f59 <+0x005b> 75 1d jne 0x64781f78 <QSerialPort::setPortName(QString const&)+122> 0x64781f5b <+0x005d> c7 44 24 08 04 00 00 00 movl $0x4,0x8(%esp) 0x64781f63 <+0x0065> c7 44 24 04 02 00 00 00 movl $0x2,0x4(%esp)If somebody can give me a help on this I would appreciate, thanks in advance.
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