QM™ (QP™ Modeler) is a freeware graphical modeling tool for designing and implementing real-time embedded software based on the lightweight QP™ active object frameworks and hierarchical state machines (UML statecharts). QM™ is available for Windows 64-bit, Linux 64-bit, and OS X.
The main goals of the QM™ modeling tool are:
The main design objectives for QM™ are simplicity and minimizing the need to "fight the tool". QM™ achieves this in several ways described below.
Compared to most other "high ceremony" modeling tools on the market today, QM™ is much simpler, code-centric, and relatively low-level. This characterization is not pejorative. It simply means that QM™ maps the design unambiguously and directly to C or C++ code, without intermediate layers of "Platform-Independent Models" (PIMs), "Platform-Specific Models" (PSMs), complex "Model-Transformations", or "Action Languages". All actions executed by state machines are entered into the model directly in C or C++.
As most other tools capable of code generation, the models you create with QM™ are based on an event-driven framework. This is because such a framework provides well-defined "framework extension points" designed for customizing the framework into applications, which in turn provide well-defined rules for generating code.
However, much of the simplicity of QM™ derives from the fact that it comes with the built-in family of QP™ frameworks (QP/C, QP/C++, and QP-nano), as opposed to supporting an open-ended number of yet-to-be-defined frameworks and programming languages.
Another simplifying aspect is that QM™ is a strictly forward-engineering tool without attempts to support round-trip-engineering.
QM™ is a unique modeling tool on the market that allows you to capture the physical design of your code as an integral part of the model, whereas "physical design" is the partitioning of the code into directories and files, such as header files (
.h) and implementation files (
.cpp files). This unique approach gives you the ultimate flexibly in the source code structure and mitigates the needs to make manual changes to the generated code in order to combine it with hand-written code or existing 3rd-party code. Also, QM™ provides mechanisms to quickly go back and forth between the model and the generated code so that any changes can be conveniently applied directly to the model rather than the code.
The QM™ graphical modeling tool is freeware. It is free to download and free to use for any purpose, including commercial projects, but is not open source. During the installation you will need to accept a basic End-User License Agreement (EULA), which legally protects Quantum Leaps from any warranty claims, prohibits removing any copyright notices from QM, selling it, and creating similar competitive products.
The code generated by QM™ is licensed under the same terms as the underlying QP™ framework, for which the code has been generated. For more information, please refer online to QP licensing and to the section Generating Comments in this document.
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