421: Paint the Iceberg Yellow
Embedded21 Jul 2022

421: Paint the Iceberg Yellow

Chris Hobbs talks with Elecia about safety critical systems. Safety-critical systems keep humans alive. Writing software for these embedded systems carries a heavy responsibility. Engineers need to understand how to make code fail safely and how to reduce risks through good design and careful development.

The book discussed was Embedded Software Development for Safety-Critical Systems by Chris Hobbs.

This discussion was originally for Classpert (where Elecia is teaching her Making Embedded Systems course) and the video is on Classpert's YouTube if you want to see faces.

There were many terms with letters and numbers, here is a guide:

  • IEC 61508: Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems; relates to industrial systems and forms the foundation for many other standards

  • ISO 26262: Road vehicles - Functional Safety; extends and specializes IEC 61508 for systems within cards

  • IEC 62304 specifies life cycle requirements for the development of medical software and software within medical devices. It has been adopted as national standards and therefore can be used as a benchmark to comply with regulatory requirements.

  • MISRA C: a set of software development guidelines for the C programming language

  • DO178-C and DO178-B: Software Considerations in Airborne Systems and Equipment Certification are the primary documents by which the certification authorities such as FAA, EASA and Transport Canada approve all commercial software-based aerospace systems

  • ISO/IEC 29119: Software and systems engineering -- Software testing

  • ISO 14971:2019 Medical devices — Application of risk management to medical devices

  • IEC 62304:2006 Medical device software — Software life cycle processes

Transcript

Episoder(567)

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Natalie Friedman joins us to discuss when, where, how, and why robots should wear clothing. Natalie is a PhD candidate at Cornell Tech. Natalie's website is natalie-friedman.com and you can find her ...

20 Jul 202355min

454: Printf Hello

454: Printf Hello

Uri Shaked surprises us with a chat about silicon design when we were expecting to talk about a web-based board simulator. If you want to try your hand at silicon design, check out Tiny Tapeout, a wa...

6 Jul 20231h 15min

453: Too Dumb to Quit

453: Too Dumb to Quit

Nathan Jones has been talking about building command line interfaces, good design practices in C, creating MCU boards, wielding the PIC of destiny, and going beyond Arduino. As we are too lazy to atte...

22 Jun 20231h 8min

452: Numbers on Computers Are Weird

452: Numbers on Computers Are Weird

Julia Evans spoke with us about how computers compute. We discussed number representation including floating point as well as Julia's extensive collection of 'zines and comics. Julia's zines about deb...

15 Jun 20231h 11min

451: From Concept to Launch

451: From Concept to Launch

Phillip Johnston of Embedded Artistry, Tyler Hoffman of Memfault, and Elecia White discuss the software tasks that tend to fall through the cracks after the device has all its features but before it i...

8 Jun 20231h 2min

450: Swimming Through Nutritious Slurry

450: Swimming Through Nutritious Slurry

Kari Love joined us to talk about soft robotics, robots in religion, and squishiness. Kari co-authored Soft Robotics: A DIY Introduction to Squishy, Stretchy, and Flexible Robots. Her website is kari...

25 Mai 20231h 6min

449: Soldering the Ukulele

449: Soldering the Ukulele

Chris and Elecia talk about internetting your thing, motivating yourself with cheese, a pile of scrabble letters, an electric ouija board, and a supervillain origin story. Elecia will be on a Memfault...

11 Mai 20231h 1min

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