Arm‬⁩ officially has a modern LLVM toolchain for 32bit microcontrollers @arm

For many years, the GNU Arm Embedded Toolchain has provided an open-source toolchain targeting embedded systems. The LLVM Embedded Toolchain for Arm is a new open-source project with the goal of providing an LLVM based equivalent to the GNU Embedded toolchain with a modern code base. The toolchain follows the ABI for the Arm Architecture and attempts to provide typical features needed for embedded and real-time operating systems.

We would like the LLVM Embedded Toolchain to lower the bar to entry of using LLVM compiler infrastructure in embedded systems. Initially targeting arm M profile systems with a special focus on v8.1-M. The presentation contains a description of:

  • Why do we need an LLVM Embedded Toolchain for Arm?
  • The challenges of targeting embedded systems with LLVM components and how the LLVM Embedded Toolchain addresses them.
  • A comparison between the LLVM Embedded Toolchain for Arm and the GNU Arm Embedded Toolchain.
  • Future plans.

Supported architectures

  • Armv6-M
  • Armv7-M
  • Armv7E-M
  • Armv8-M Mainline
  • Armv8.1-M Mainline
  • AArch64 armv8.0 (experimental)

The project is hosted on GitHub with build scripts under a permissive Apache License.

See the video below and more on the GitHub repo.


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 30,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — The Defense Production Act and the global supply chain

Wearables — The eyes have it!

Electronics — Counting Pin Numbers

Python for Microcontrollers — Python on Microcontrollers Newsletter: Events, Projects, and much more! #Python #Adafruit #CircuitPython @micropython @ThePSF

Adafruit IoT Monthly — No-Code IoT with WipperSnapper, Beaming Internet across the Congo, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 10/15/2021 Featuring Kitty’s Flowers – Pair of Bluetooth Wearable Brooches – Art by Physicist (Video)

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.