Due to prevalent blocking, RTOS-based designs are generally difficult to reconcile with the Open-Closed Principle. In contrast, event-driven approach is naturally “Open for Extension and Closed for Modifications”.
The QSPY host application can now generate sequence diagrams. This new feature replaces the previous support for MscGen and is no longer reliant on any
New QP-bundle 6.9.2 is now available for download: Released software versions: QP/C 6.9.2: See QP/C revision history for version 6.9.2 QP/C++ 6.9.2: See QP/C++ revision
A new Python version of the popular QCalc tool has been released in QTools 6.9.2. The new QCalc is a console application, unlike its predecessor,
Key Concept: Software tracing is a method for obtaining diagnostic information about the embedded software in a live environment without the need to stop the
Key Concept: Model-Based Design (MBD) is a software development process in which the primary focus and products are software models rather than directly code. MBD
Key Concept: The behavior of each Active Object in the QP™ real-time embedded frameworks is specified by means of a hierarchical state machine (UML statechart),
Key Concept: A Real-Time Embedded Framework (RTEF) is an implementation of the Active Object design pattern specifically designed for real-time embedded systems. RTEF provides the
Key Concept: Active Objects combine event-driven programming with multithreading. They naturally implement and automatically enforce the best practices of concurrent programming. Best Practices Active Object
Key Concept: Embedded systems need a program structure that can respond to a multitude of possible event sequences, any of which can arrive at unpredictable
Key Concept: A sequential program explicitly waits in-line, for the expected events in various places in the execution path. This explicit waiting for events is
Key Concept: The main common characteristic of Real-Time Embedded (RTE) systems is that they constantly interact with the external world. Such systems, termed reactive, do
We are excited to announce the launch of our updated website at www.state-machine.com. The new site has a fresh new look and is based on
The Quantum Leaps’ QP™ real-time embedded frameworks (RTEFs) and the QM™ modeling tool complement the Arduino platform and provide everything you need to program Arduino
If you’d like to understand how Object-Oriented Programming (OOP) really works under the hood, here is a free video course for you: OOP Part-1: Encapsulation
If you’d like to understand how a Real-Time Operating System (RTOS) really works, here is a free video course for you: RTOS Part-1: Threads as
In this installment of my “Embedded Toolbox” series, I would like to share with you the free source code cleanup utility called QClean for cleaning
Like any craftsman, I have accumulated quite a few tools during my embedded software development career. Some of them proved to me more useful than
An RTOS (Real-Time Operating System) is the most universally accepted way of designing and implementing embedded software. It is the most sought after component of
This Application Note describes how to use the QP™/C and QP™/C++ real-time embedded frameworks (RTEFs) version 5.x.x or higher with the POSIX standard-compliant operating system,
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