Qt Serial Bus

The Qt Serial Bus API provides classes and functions to access the various industrial serial buses and protocols, such as CAN, ModBus, and others.

Getting Started

To include the definitions of the module's classes and functions, use the following directive:

#include <QtSerialBus>

To link against the module, add this line to your qmake .pro file:

QT += serialbus

Supported Buses and Protocols

API Reference

These are links to the API reference materials.

Logging Categories

The QtSerialBus module exports the following logging categories:

Logging CategoryDescription
qt.canbusEnables standard logging inside the Qt CAN Bus classes
qt.canbus.pluginsEnables low level logging inside the Qt CAN Bus plugin classes. To set logging for a specific plugin, use "qt.canbus.plugins.pluginname". e.g. "qt.canbus.plugins.socketcan". "qt.canbus.plugins*" affects all plugins.
qt.modbusEnables standard logging inside the Qt Modbus classes
qt.modbus.lowlevelEnables low level logging including individual packet content inside the Qt Modbus classes

Logging categories can be used to enable additional warning and debug output for QtSerialBus. More detailed information about logging can be found in QLoggingCategory.

A quick way to enable all Qt Modbus logging is to add the following line to the main() function:

QLoggingCategory::setFilterRules(QStringLiteral("qt.modbus* = true"));


© 2024 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.