QDebug() << "New data available: " << serial. QDebug() << "error: " << serial.errorString() If(!serial.waitForReadyRead(-1)) //block until new data arrives Shows how to get information about serial devices in a system. If(!tFlowControl(QSerialPort::HardwareControl)) Running the Examples Command Line Enumerator Example. Your code can be rewritten like this: #include This is how you should do most stuff in Qt, In order to be able to act upon multiple events that may arrive at any time. Use the readyRead() signal to get notified when new data is available in the device instead of looping forever. You need to call readAll only when you know that new data has arrived. Currently, You are just calling readAll in an endless loop (this makes the thread, spend all its time in this loop, unable to receive the new data that may have arrived.) Instead, it returns currently available data (data that can be read from the device without waiting). This means that readAll() does not wait for data to arrive. Most IO functions in Qt are asynchronous. this is called when a serial communication error occurs Sending a data to Arduino through serial port using Qt. This package constains the serial port submodulex27 s examples. Qtx27 s primary feature is its rich set of widgets that provide standard GUI functionality. Here is my final code QSerialPort serial Qt is a cross-platform C application framework. Thanks to mike i can finaly read this usb device !!! If no why there is no data display via the qDebug().Did i miss something in the setting of the QSerialPort ?.If(!tBaudRate(QSerialPort::Baud1200, QSerialPort::Input)) Now i want to read the data via a Qt5.3 program QSerialPort serial sudo stty -F /dev/ttyUSB0 1200 sane parenb evenp cs7 -crtsctsĪnd the data are like this TGPHI_s -0,24 =.I am trying to read the data sent by a device plug via usb.
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