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Diffstat (limited to 'examples/serialport/doc/terminal.qdoc')
| -rw-r--r-- | examples/serialport/doc/terminal.qdoc | 47 |
1 files changed, 32 insertions, 15 deletions
diff --git a/examples/serialport/doc/terminal.qdoc b/examples/serialport/doc/terminal.qdoc index c693954a..5707a248 100644 --- a/examples/serialport/doc/terminal.qdoc +++ b/examples/serialport/doc/terminal.qdoc @@ -1,11 +1,13 @@ // Copyright (C) 2011 - 2012 Denis Shienkov <denis.shienkov@gmail.com> -// Copyright (C) 2016 The Qt Company Ltd. +// Copyright (C) 2023 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only /*! \example terminal - \title Terminal Example + \title Serial Terminal \ingroup qtserialport-examples + \meta category Connectivity + \brief Shows how to use various features of QSerialPort. \e Terminal shows how to create a terminal for a simple serial interface by @@ -63,12 +65,16 @@ happens automatically according to the parent and child mechanism in Qt: \snippet terminal/mainwindow.cpp 0 - \dots \snippet terminal/mainwindow.cpp 1 + \dots - The only QSerialPort signal invoked in this example is - \l{QIODevice::}{readyRead()}, which shows that new data has been - received and hence available: + This example demonstrates the following \l QSerialPort signals: + \list + \li \l {QIODevice::}{readyRead()} - shows that new data has been + received and hence available + \li \l {QIODevice::}{bytesWritten()} - used to check that all data was + written successfully + \endlist \dots \snippet terminal/mainwindow.cpp 2 @@ -79,7 +85,8 @@ \snippet terminal/mainwindow.cpp 4 - In this slot, the settings are read from \c{SettingsDialog} and an attempt is made to open and initialize the serial + In this slot, the settings are read from \c{SettingsDialog} and an attempt + is made to open and initialize the serial port accordingly. If successful, the status bar displays a message that the opening was successful with the given configuration; otherwise, a messagebox is displayed with the appropriate error code and message. If the serial port @@ -93,12 +100,30 @@ In this case, handled by the closure of the serial port. + Clicking on the \b{Configure} button invokes the \c{show()} slot which + belongs to the \c{SettingsDialog} widget. + + This method (\c{terminal/settingsdialog.cpp}) displays the \c{SettingsDialog}, + in which the user can choose the desired serial port, see the information + about the selected port, and set the desired parameters of the given serial + port. + + \section2 Writing Data + Typing characters in the console invokes the \c writeData() slot: \snippet terminal/mainwindow.cpp 6 This slot sends the characters typed in the given Console widget to the serial port - see \c terminal/console.cpp. + It also starts a timer to track if the write actually succeeded or not. + We use the \l {QIODevice::}{bytesWritten()} signal to make sure that all + bytes are actually written. It is connected to the + \c {MainWindow::handleBytesWritten()} slot: + + \snippet terminal/mainwindow.cpp 9 + + \section2 Reading Data When the serial port receives new data, the signal \l{QIODevice::}{readyRead()} is emitted, and that signal is @@ -109,14 +134,6 @@ This slot reads the data from the serial port and displays that in the Console widget. - Clicking on the \b{Configure} button invokes the \c{show()} slot which - belongs to the \c{SettingsDialog} widget. - - This method (\c{terminal/settingsdialog.cpp}) displays the \c{SettingsDialog}, - in which the user can choose the desired serial port, see the information - about the selected port, and set the desired parameters of the given serial - port. - \sa {Blocking Receiver Example} \include examples-run.qdocinc |