Here are the articles, videos, and tools that we’ve been excited about this May.

What have you been reading? Share in the comments or on the Interrupt Slack.

Articles & Learning

• JTAG Hacking with a Raspberry Pi - Introducing the PiFex
  A nice overview of a Raspberry Pi-based hacking tool and how it can be used with JTAG interfaces. — Eric

• Updating U-Boot with an A/B Strategy – Burkhard Stubert
  Cool article about A/B updates! — Pat

• The TTY demystified
  Overview of the TTY system in Linux. The first step in understanding how your keys reach your terminal. — Eric

• newlib and FreeRTOS
  Deep dive into dynamic memory allocation when using FreeRTOS and Newlib. — Noah

• Ninja Calc
  Really cool series of purpose-built calculators in hardware design to help with things like NTC thermistors, LED current limiting, and trace currents. — Eric

• John Graham-Cumming’s blog: Controlling the Taylor Swift Eras Tour wristbands with Flipper Zero
  Not a technically deep article, but a fun hack using Flipper on LED concert wristbands (including a short video explaining them) — Heiko

• CADmium: A Local-First CAD Program Built for the Browser
  Finally, CAD in your browser! — Eric

• DIY 256-Core RISC-V super computer - YouTube
  This YouTuber took 256 RISC-V microcontrollers and wired them into a mini-supercomputer. It’s completely impractical but a very cool project. — François

• Evolution of the ELF object file format | MaskRay
  A historical look at the ELF format. — Eric

• Surprise! ESP32-S3 has (a few) SIMD instructions
  High-level description of the SIMD extensions on the ESP32-S3 chip. This only surfaced last year and is a pretty nice feature of these chips! — Noah

• ESP32-S3 SIMD Minimal Example
  A simple demo to complement the instructions above. — Noah

• Low-Power Optimization Techniques for ARM Cortex-M Microcontrollers | MCU on Eclipse
  Article from MCUOnEclipse about Cortex-M Power optimizations. (My pick)

Projects & Tools

• Hirrolot/datatype99: Algebraic data types for C99
  Safe, intuitive algebraic data types with exhaustive pattern matching & compile-time introspection facilities. No external tools required, pure C99. — François

• ricardoquesada/bluepad32: Bluetooth gamepad, mouse and keyboard support for ESP32 and PicoW
  Project providing client support for Bluetooth gamepads on several host platforms. — Noah

• haydenridd/stm32-zig-porting-guide: Compiling an STM32CubeMX with Zig’s compiler instead of arm-none-eabi-gcc.
  Compiling an STM32CubeMX with Zig’s compiler instead of arm-none-eabi-gcc. — Matheus Catarino França

News & Announcements

• GCC 14 Release Series — Changes, New Features, and Fixes - GNU Project
  GCC 14.1 released 🎉!

• Solar Storms Break Millions of Smart Devices | Memfault
  A data analysis on how the May 2024 solar storm impacted Memfault customers’ smart devices. — François

Upcoming Events

• June 24-28 | Launch Week - Memfault
  We are introducing Product Analytics for embedded devices. Join us for our Launch Week!