Get Started with Embedded Swift on ARM and RISC-V Microcontrollers

Swift is a scalable language, great for writing desktop and mobile apps, server backends, and system software. And as you may have seen, thanks to a new, experimental compilation mode, you can use Swift to target embedded environments like ARM and RISC-V microcontrollers as well, popular for building professional and hobbyist electronics projects such as IoT devices.

→ swift.org/blog/embedded-swift-examples/

Apple has introduced a repository, swift-embedded-examples, showcasing Embedded Swift, a new experimental compilation mode for Swift targeting constrained microcontrollers like ARM and RISC-V, suitable for IoT and electronics projects.

This mode disables features like runtime reflection and ABI stability to produce small, standalone firmware binaries while retaining Swift’s idiomatic syntax. The repository includes examples for STM32, Raspberry Pi Pico, nRF52840, and ESP32C6, demonstrating standalone Swift code and SDK bridging with various build systems.

The community is encouraged to contribute more examples, and developers can try them using the latest nightly toolchain, with feedback welcomed on Swift Forums to shape Embedded Swift’s future.