Problem with running timer in another thread

[JonB]

@Damian7546
Then by choosing to use threads where they are probably not needed you (or the original author) have ended up with a problem using threads, possibly because the original code was not well written for threads. Which tells you a lot... ! Just saying.

[Pl45m4]

@Damian7546 said in Problem with running timer in another thread:

But as part of learning (main goal of the project) programming and uing threads I would like to use threads this time to serial communication, and run example considered in this topic.

Then you can look, for example, at Qt's Blocking Serial Port Examples:

(Sender)

• https://doc.qt.io/qt-6/qtserialport-blockingsender-example.html

(Receiver)

• https://doc.qt.io/qt-6/qtserialport-blockingreceiver-example.html

Or you use some non-Qt implementation of serial port communication, such as serial_port from Boost.ASIO library.
(makes little sense, since you are already using Qt which provides all that stuff... but for learning purposes it's fine to look at different techniques)

• https://www.boost.org/doc/libs/1_84_0/doc/html/boost_asio/overview/serial_ports.html

[Christian Ehrlicher]

@Damian7546 said in Problem with running timer in another thread:

But as part of learning (main goal of the project) programming and uing threads I would like to use threads this time to serial

Then look at the Qt documentation for Qt threads and it's examples instead some obscure git projects.

[Damian7546]

Problem with QObject::startTimer: Timers cannot be started from another thread Solved!

I changed:

-All entries of the connect function, from:

connect(this, &CctalkLinkController::openPortInWorker, serial_worker_.data(), &SerialWorker::openPort, Qt::QueuedConnection);

to:

connect(this, &CctalkLinkController::openPortInWorker, serial_worker_, &SerialWorker::openPort, Qt::QueuedConnection);

Because I don't have any idea what is data() ?

And like suggested @J.Hilk in CctalkLinkController I changed:

CctalkLinkController::CctalkLinkController()
{
    serial_worker_ = new SerialWorker();

to

CctalkLinkController::CctalkLinkController(QObject *parent) : QObject(parent), serial_worker_{new SerialWorker(this)}
{