QP framework with Mitch English

The episode features a discussion with Mitch English, a product development team lead at Inertia, about using the QP (Quantum Platform) framework for embedded systems development. Mitch and Jeff recently collaborated on a medical device project where they successfully implemented QP. The framework, created by Miro Samek, implements the actor model with active objects running in their own threads and communicating via messages. This approach helps avoid common concurrency issues found in traditional RTOS implementations.The discussion covers how QP's hierarchical state machine framework makes it easier to manage complex state transitions and system behaviors. They share their experience using QP on a blood analyzer project, discussing how they structured the code with different layers of abstraction and maintained multiple test builds throughout development. The team found that QP's architecture helped make the system's complexity more manageable and testable.A key learning they shared was about event communication - while they initially used direct posting between active objects, they later realized that using the publish-subscribe pattern more extensively would have made testing easier and the system more flexible. They recommend starting with QP's simple examples and gradually building up complexity rather than trying to implement complex examples right away.Key Timestamps:00:00:00 - Introduction and background00:03:00 - Overview of QP framework and actor model00:06:30 - Discussion of hierarchical state machines00:19:30 - Project architecture and implementation approach00:27:00 - Testing strategies and development process00:30:00 - Team structure and collaboration00:35:00 - Hardware/software integration00:39:00 - Advice for getting started with QP00:41:50 - About Inertia and contact informationLinks:Miro Samek's QP framework: https://www.state-machine.com/products/qpMiro's book on QP framework: https://www.state-machine.com/psicc2QP GitHub repository with example code: https://github.com/QuantumLeaps/qpc-examplesInertia website: http://www.inertiapd.com/Mitch English LinkedIn: https://www.linkedin.com/in/mitchellenglish/ You can find Jeff at https://jeffgable.com.You can find Luca at https://luca.engineer.Want to join the agile Embedded Slack? Click hereAre you looking for embedded-focused trainings? Head to https://agileembedded.academy/Ryan Torvik and Luca have started the Embedded AI podcast, check it out at https://embeddedaipodcast.com/