how to create App for communicate with device through USB serial communication

[kuzulis]

@vicksoccer , are you sure that you have a right permissions to open the ttyACM device? You can search required info in google. What is an error code?

[vicksoccer]

@kuzulis
getting segmentation fault error in first line of qserialport code..

usb->setPortName(port);
usb->setBaudRate(QSerialPort::Baud9600);
usb->setDataBits(QSerialPort::Data8);
usb->setParity(QSerialPort::EvenParity);
usb->setStopBits(QSerialPort::OneStop);
usb->setFlowControl(QSerialPort::NoFlowControl);
if (usb->open(QIODevice::ReadWrite)) {
qDebug() << "Port open success!!";
} else {
qDebug() << "Port open failed!!";
}
nothing is happened with qserialport only port detection is succeed. I Dont know why, search on google also..

[vicksoccer]

Thanks all for your kind support!!!
Problem solved.. Its done with qserialport itself,
Now my device port is opened need to work on send commands..

[mrjj]

@vicksoccer

Hi
If possible, could you tell how you made the
segmentation fault error go away?
What was the issue and fix.

[vicksoccer]

@mrjj
I think fault is due to initialization of port is not proper.
this work for me for setting available device port and open it.

QSerialPort usb = new QSerialPort(port);
usb->setBaudRate(QSerialPort::Baud9600);
usb->setDataBits(QSerialPort::Data8);
usb->setParity(QSerialPort::EvenParity);
usb->setStopBits(QSerialPort::OneStop);
usb->setFlowControl(QSerialPort::NoFlowControl);
if (usb->open(QIODevice::ReadWrite)) {
qDebug() << "Port open success!!";
} else {
qDebug() << "Port open failed!! + usb->errorString()";
}

[mrjj]

Hi
So you added the line
QSerialPort *usb = new QSerialPort(port);

and it then worked or something else ?

[vicksoccer]

@mrjj
Yes I have added this line only and its worked for me..

[jsulm]

@vicksoccer Keep in mind that if you defined this "usb" variable somewhere else you're creating a new one with same name now.
If you already have one then do it like this:

usb = new QSerialPort(port);

[vicksoccer]

@jsulm
Yes,Sure :)
Thanks

[sammy_49ers]

I thought we are talking about HID devices ?

Whatever, if you need driver support for USB HID devices take look at www.hidxplat.com.

Thanks sammy