Modern Embedded Systems Programming Course - #43 Active Objects in Real-Time Part-1: Run-to-Completion and RMS/RMA

This lesson goes back to event-driven programming and Active Objects in particular. You've been using event-driven Active Objects since lesson #34, but perhaps it's not quite clear to you what advantages they provide in real-time programming. So, this lesson ties together the concepts of event-driven programming, active objects, state machines, and real-time operating system (RTOS). Contents with Timestamps: ------------------------- 1:04 Real-time behavior of traditional blocking threads 2:55 Logic analyzer view of the traditional threads 3:06 Inexpensive logic analyzer hardware, software, and resources 3:37 Rate Monotonic Scheduling (RMS) of traditional threads 4:21 Can Active Objects be hard real-time? 4:34 Converting traditional threads to Active Objects 7:57 Allocating active object instances and event-queues 8:27 No need for private stacks in the QXK kernel 8:25 Basic threads and extended threads in QXK 9:30 Starting Active Objects (basic threads) under QXK 10:25 Declaring event signals for Active Objects 10:52 Declaring global pointers to Active Objects 11:20 Posting immutable events to Active Objets 11:46 Running the Active Object code with logic analyzer 12:00 Comparison between Active Objets and traditional threads 12:37 Run-to-Completion != Monopolizing the CPU 13:03 Summary ------- Resources: Companion web page for this video course: https://www.state-machine.com/quickstart GitHub repository for projects for this video course: https://github.com/QuantumLeaps/modern-embedded-programming-course Transcript of this lesson: https://www.state-machine.com/course/lesson43.txt Inexpensive Logic Analyzer: HiLetgo USB Logic Analyzer on Amazon.com: https://www.amazon.com/dp/B077LSG5P2/ref=cm_sw_em_r_mt_dp_F5205AMDJ4C1SA1N2CS6 sigrok/PulseView software: https://sigrok.org https://github.com/sigrokproject/pulseview HiLetGo Digital Logic Analyzer and PulseView video: https://youtu.be/Gx0Qo5n-x_4 SparkFun Tutorial: "Using the USB Logic Analyzer with sigrok PulseView": https://learn.sparkfun.com/tutorials/using-the-usb-logic-analyzer-with-sigrok-pulseview Music credits: The background music comes from: https://www.bensound.com/royalty-free-music/track/straight