--- title: "Channel Trailer" url: https://daily.dev/posts/channel-trailer-clhypearh source_url: https://www.youtube.com/watch?v=EegFVATVvJU type: video:youtube source: "Quantum Leaps" published: 2026-05-31T07:45:36.121Z updated: 2026-06-04T02:16:33.166Z tags: ["embedded", "rtos"] reading_time: 4 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Channel Trailer **[Quantum Leaps](https://daily.dev/sources/quantum-leaps)** · 4 min read · 0 upvotes · 0 comments ## Summary A hands-on walkthrough of how CPU context switching works on ARM Cortex-M microcontrollers, using a TI LaunchPad board as the example platform. By manually manipulating the interrupt stack frame's PC entry during a SysTick handler breakpoint, the demonstration shows how returning from an interrupt to a different address enables switching between two independent background loops (main_blinky1 and main_blinky2) that each blink a different LED. The exercise builds intuition for multitasking on a single CPU and introduces the concept of an RTOS kernel as the software that automates this context-switching process. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Context Switches](https://daily.dev/posts/context-switches-3g5ft7ffm) · matklad · 1 upvotes · 0 comments --- Tags: [#embedded](https://daily.dev/tags/embedded), [#rtos](https://daily.dev/tags/rtos) [View this post on daily.dev](https://daily.dev/posts/channel-trailer-clhypearh)