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Oh, and if you don't want to use ReportProgress() but update some control from within DoWork(), you cannot do so directly. Remember to set your BackgroundWorker to ReportsProgress = true. bytesWritten is not emitted and the data is not read back. to the normal read and write calls to get information from the touchscreen. port.write returns 4, meaning 4 bytes are send to the serial port, but that is not actually done. You can start it by calling ReportProgress() and support an object that can contain anything. This port uses a software SPI for communication to the TFT, whic uses the. Just as RunWorkerCompleted, it will run in main thread. And it does so automatically after your DoWork method has returned.įurthermore, you can attach a method to your BackgroundWorker's ReportProgress event. The QIODevice interface has the default char for sending which may be compiler dependent.
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To review, open the file in an editor that reveals hidden Unicode characters. Start it by calling RunWorkerAsync() on your BackgroundWorker object.Īdditionally, you can attach a method to your BackgroundWorker's RunWorkerCompleted event. serialreadwritelines.py This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Here you can find a post serie about using serial port communications with C/C++ and C, for Windows, Linux and microcontrollers. This method is the one running in a separate thread. This post is part of the Practical C++ programming tutorial for Bioloid. If not all the data is read at once, the remaining data will be available for later as new incoming data is appended to the QSerialPorts internal read buffer. Alternatively the readLine () and readAll () convenience methods can also be invoked.
Qt serial port read and write how to#
MSDN gives an example on how to use it.Ģ. Once you know that the ports are ready to read or write, you can use the read() or write() methods.
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It's a very convenient way of using a separate thread. I may very well be wrong, but your code looks a lot more like C++ than C#.Īs for your question, WindowsForms provides a class BackgroundWorker in the System.ComponentModel namespace.