RP2040 Boot Loader is a Worm
Hunter Adams has developed a secondary bootloader for the RP2040 microcontroller, leveraging an IR link for easy updating of a large cluster of co-located RP2040-based controllers. With potential applications ranging from swarm robotics to virtual cattle fencing, this innovative bootloader provides a convenient solution for managing firmware updates in distributed systems. While demonstrated using a pair of IR transmitters/receivers in the project videos, Hunter intentionally designed the bootloader to be adaptable to various communication mediums, including infrared, radio, audio, or wired connections.
In addition to creating the bootloader, Hunter meticulously documented the entire boot process of the RP2040 chip. This comprehensive resource offers valuable insights into how the RP2040 chip behaves during power cycling and resets, making it an invaluable reference for developers. The bootloader code is readily available on Hunter’s GitHub repository, providing an accessible platform for further exploration and customization. Whether seeking to implement firmware updates in a distributed system or simply aiming to deepen understanding of the RP2040’s boot process, this project serves as an excellent resource for developers and enthusiasts alike.
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