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

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

Articles & Learning

• How to use Matter to Build a Connected Smart Home Device - YouTube
  From our friends at Ovyl, a video tutorial on setting up an example Matter network using a Thread Border Router (with ESP32 + EFR32MG24) and a few nRF52840 dev kits. — Eric

• Why Do Electronic Components Have Such Odd Values? – Digilent Blog
  Explains how various tolerances make resistors have odd values but still provide coverage at cost. — Victor

• TPM GPIO fail: How bad OEM firmware ruins TPM security
  A case where repurposing a pin as a GPIO is used to exploit an Intel TPM. — Eric

• Detecting a PS2 Emulator: When 1*X does not equal X
  A straightforward method for detecting PS2 emulators using an odd floating point error. — Pat

• Inline Assembly Dangers
  “Senior engineer: still searching for the missing newline.” It’s one of the many stories developers can share about tools invoking other tools as part of the their setup. — Heiko

• Exploring TrustZone-M on the nRF9160 - Lena’s Fieldnotes
  Exploring a basic TrustZone-M application on the nRF9160. — Noah

• I really like the RP2040 | Dan Groshev
  Nice brief highlighting some of the unique features of the RP2040. — Eric

• Inside the tiny chip that powers Montreal subway tickets
  Reverse engineering a disposable chip the size of a grain of salt that’s embedded in Montreal’s subway tickets. — Victor

• shraiwi/blog/simd-fast-esp32s3.md
  Vectorized computer vision algos on an ESP32. — François

• GCC’s new fortification level: The gains and costs | Red Hat Developer
  Discover the gains and costs of GCC’s enhanced runtime buffer overflow protection. — François

• How to Get Root Access to Your Sleep Number Bed - Dillan Mills
  Uncovering a “convenient” backdoor that Sleep Number can use to SSH back into the hub—and your internal home network as a result. — François

• ANCS and HID: Controlling Your iPhone From Zephyr - Mohammed Billoo
  Easy tutorial on how to get ANCS and HID set up with an nRF52, Zephyr, and your iPhone. (My pick)

Projects & Tools

• dojoe/Twonkie: A USB-PD sniffer/injector/sink based on Google’s Twinkie, re-designed to be manufactured by mere mortals.
  Project description says it best: “Twonkie is a USB-PD sniffer/injector/sink based on a Google project called Twinkie, re-engineered to be made in one-off quantities by mere mortals” — Eric

• cnlohr/mini-rv32ima: A tiny C header-only risc-v emulator.
  Really readable and tiny risc-v emulator. (Sorry, no Mac instructions!) — Noah

• UW PLSE | Herbie, the Numerical Compiler
  University of Washington’s Herbie tool can improve your floating point usage both for accuracy and speed. — Eric

• haydenridd/gcc-arm-to-zig: Utilities for porting Cortex-M projects from arm-none-eabi-gcc compiler to Zig.
  Utilities for porting Cortex-M projects from arm-none-eabi-gcc compiler to Zig. — Matheus Catarino França

News & Announcements

• Memfault unveils Product Analytics, a platform to provide insights - IOT Insider
  Recently Memfault unveiled Product Analytics, a new feature set aimed at delivering comprehensive insights into the performance and usage of IoT devices.

• IoT startups to keep an eye on - IOT Insider
  IoT Insider included Memfault in its pick of five startups to keep an eye out for as they blaze their own trail and create impactful technology.

• 5 ways IoT consumer devices are disappointing users | Electronics360
  As IoT consumer devices become omnipresent in everyday life, vendors are having to deal with the increased quality issues of these devices, according to a new survey from Memfault.

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