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 use the module with CMake, use the find_package() command to locate the needed module components in the Qt6 package:

find_package(Qt6 COMPONENTS SerialBus REQUIRED)
target_link_libraries(mytarget PRIVATE Qt6::SerialBus)

To use the module for building with qmake, add the module as a value of the QT variable in the project's .pro file:

QT += serialbus

Supported Buses and Protocols

• Qt CAN Bus
• Qt Modbus

API Reference

These are links to the API reference materials.

• C++ Classes

Logging Categories

The QtSerialBus module exports the following logging categories:

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"));

Examples

• CAN Bus Example
• Modbus Client example
• Modbus Server example
• Modbus Custom command example

Module Evolution

Changes to Qt SerialBus lists important changes in the module API and functionality that were done for the Qt 6 series of Qt.