🛡️ Portable Embedded Rust with task-watchdog 🐺: One Codebase for pico, stm32 & esp32 | rocking rust

Learn how to build robust embedded applications using Rust, Embassy, and my new task-watchdog crate - a flexible watchdog management library that multiplexes task watchdogs into a single hardware watchdog timer!

In this two-for-one video, I demonstrate how to write truly portable embedded code that works across multiple microcontroller platforms (Raspberry Pi Pico/Pico 2, STM32, and ESP32) using the same codebase, while showcasing my new task-watchdog crate for managing system reliability.

This video covers:

- 🛡️ Understanding watchdogs and why they're critical for embedded system reliability
- 🔀 How task-watchdog multiplexes multiple task watchdogs into a single hardware watchdog
- 💻 Writing portable Rust code that works across Pico, Pico 2, STM32, and ESP32
- ⚡ Using Embassy for async Rust on embedded systems
- 🧠 Building a complete multi-task application with proper watchdog integration
- 🔌 Dynamic task management with runtime registration/deregistration
- 🚫 Demonstrating fault recovery with intentional task failures

I start with a basic example showing the core API, then expand to a more comprehensive example that supports all target platforms in a single file, demonstrating the true portability of both task-watchdog and Embassy-based embedded Rust.

Whether you're building mission-critical embedded systems or just want to make your projects more robust, this video will show you how to implement proper watchdog management across multiple platforms with a single, clean codebase.

Timestamps:
00:00 Introduction
00:20 Why watchdogs matter
01:53 The task-watchdog approach
03:50 Basic example walkthrough
07:09 Multi-platform demonstration
09:49 Portable code walkthrough
14:43 Wrap-up and learnings

I didn't cover the full task-watchdog API in the video, so check out the crate documentation below if you're interested. In particular there's also a task_deregister() call, which allows tasks to block without the watchdog being triggered.

Links:

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