Continuous delivery of embedded systems embedded meetup
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The document discusses continuous delivery in embedded systems, led by Mike Long, focusing on key practices, challenges, and techniques. It emphasizes the importance of traceability, reproducibility, and effective testing strategies in the software development lifecycle. Additionally, it documents the ideal embedded process and highlights the value of continuous integration and delivery for enhancing product quality and speed to market.
Continuous delivery of embedded systems embedded meetup
- 1. @meekrosoft Continuous Delivery of Embedded Systems Mike Long @meekrosoft
- 3. Who is Mike Long? ● Doer: Embedded software, CoDe & DevOps ● Trainer: git, jenkins, docker, TDD ● Speaker: coming to a conference near you! ● Manager: Co-owner Praqma, CEO Praqma Norway
- 4. @meekrosoft Agenda: - What is Continuous Delivery? - What are the challenges in Embedded? - What techniques can we take advantage of? - How can we test embedded software? - Who has done this already?
- 6. @meekrosoft Professional software development 1. Take a copy of the codebase for existing product 2. Carefully document its current algorithms 3. Add changes surrounded by ifdefs 4. Test for months 5. Commit the code as a new project that will “hopefully” get merged to the in the future 6. Compile on my laptop 7. Ship!
- 8. @meekrosoft Agile Manifesto ● Four doctrines, twelve Principles # 1 # 7
- 10. @meekrosoft The ideal Embedded process 1. Fetch the latest source (which is up to date with release) 2. Branch, implement feature, test 3. Push 4. CI 5. CD 6. Canary deployment 7. Real-time production feedback
- 15. @meekrosoft Fire and forget codebases?
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- 20. @meekrosoft The red thread of traceability We want to know: what it is compatible with, what it depends on, where it was built, what its test results were, its source version, and the task that spawned the change
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- 31. @meekrosoft http://blog.codinghorror.com/the-f5-key-is-not-a-build-process/ If your "build process" is the F5 key, you have a problem…..Get your build process out of the IDE and into a build script.
- 32. @meekrosoft What’s missing? Traceability: Can I find out exactly the environment for this build? Reproducibility: Can I build something from last year with the same results?
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- 37. @meekrosoft Configuration as code Linux slaveLinux slaveLinux slaveLinux slaves Dockerfile Vagrant file Windows slaves Puppet file Windows slavesWindows slaves Jenkins Jobs JobDSL
- 38. @meekrosoft Build in a box Jenkins Master Artifactory Docker container Linux slaveLinux slaveLinux slaveLinux slaveLinux slaveLinux slave Windows slave Vagrant VM Windows slaveWindows slaveWindows slaveWindows slave Puppet Master
- 40. @meekrosoft Airbus engineers employed the latest and greatest formal methods, and provided model checking and formal proofs of all of their avionics code. Meanwhile, according to the story, Boeing performed extensive design review and testing, and made all their software engineers fly on the first test flights. The general upshot of the story was that most of us (it seemed) felt more comfortable flying on Boeing aircraft. (It would be interesting to see if that would still be the majority opinion in the software engineering community.) https://www.cerias.purdue.edu/site/blog/post/short_random_thought_on_testing/#When:16:40:35Z Eugene H. Spafford, Professor & Executive Director, Purdue University
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- 43. @meekrosoft System Tests - Control power - Program devices - Control Actuators - Sense results ✓
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- 47. @meekrosoft Test everywhere Test on your host for: ● Feedback speed, debugging But also test on target because: ● Compilers/hardware are different ● Endiness/overflow/underflow behave differently ● Ship them if you can!
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- 50. www.xethru.com ASIC Quality – Continuous Delivery
- 52. @meekrosoft // #ifdef MY_PROD_V1 Avoid using the preprocessor for variants ● It makes builds slow ● Lowers cohesion ● Also hinders understandability
- 53. @meekrosoft Only build your binaries once Efficiency - time to feedback Safety - ship what you test
- 54. @meekrosoft Amplify feedback loops TDD Red Refactor Green Learn Measure Build Produ ct Data Ideas Continuous Integration Continuous Delivery BDD Automated Deployment Customer Feedback
- 55. @meekrosoft Dev Env is competitive advantage Attrition vs. Late follower vs. Unhappy customers vs. Recruitment First to market Raving fandom
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- 59. @meekrosoft The researchers praised Tesla for the way the vehicle handled the bogus commands and how the car maker responded to their findings.
- 60. @meekrosoft In late July, Fiat Chrysler issued a recall for more than 1.4 million vehicles after hackers Charlie Miller and Chris Valasek showed how to use bugs in the onboard software of the Jeep Cherokee to shut it down remotely.
- 61. @meekrosoft Agenda: - What is Continuous Delivery? ✓ - What are the challenges in Embedded? ✓ - What techniques can we take advantage of? ✓ - How can we test embedded software? ✓ - Who has done this already? ✓