Costly mistakes IoT developers make and how to avoid them

Transcription

1 Costly mistakes IoT developers make and how to avoid them Tino Pyssysalo, Senior Manager The Qt Company Embedded Conference Finland

2 The Qt Company Solutions for Embedded SW >300 Professionals in ten countries >5000 Customers >1M Developers >70 Industries 22 years company history First public version of Qt released by Trolltech (Norway) Trolltech IPO to Oslo exchange Trolltech acquired by Nokia Digia acquired All rights to Qt from Nokia Digia acquired Qt Commercial licensing business from Nokia Qt Group Plc demerger from Digia, listed independently in NASDAQ Helsinki The Qt Company becomes its own entity, a subsidiary of Digia >30 Cross-platform SW libraries for desktop, mobile, and embedded UI + engine

3 Mistakes Increase Time to Market and Total Cost of Ownership Test & validation Maintenance Development TTM Last 10% of features take 80% of the dev time TCO The later a mistake is found, the more costly it is to fix it Concept Design Prototype The Qt Company findings about common mistakes in customer projects over the years 3 13 April 2018 Embedded Conference Finland

4 Insufficient IoT Technology Evaluation Evaluation based on incomplete requirements Memory footprint compared, but run-time memory consumption ignored Chosen technologies are challenging to mix SW requires accelerated graphics Lack of community Missing support Dependency on one partner Choosing OSS solutions without understanding the obligations IPR and patent protection OSS license incompatibilities Static builds Immature or fast evolving technology Technology life-time Fixing problems affect TTM and TCO Technology evaluation based on a defined and known requirements 4 13 April 2018 Embedded Conference Finland

5 Too Optimistic Rightsizing Lower BOM => bigger margin SW designed independently of a chosen HW HW often chosen before SW exists HW requirements based on assumptions: IoT SW is simple, small flash memory sufficient Upgrading HW increases BOM costs Larger flash or RAM i.mx7 => i.mx6 SW developed in the host and validated in target HW late in the dev project Sales volume BOM Unit price Early prototyping and early fails even in the emulator with adjustable parameters 5 13 April 2018 Embedded Conference Finland

6 Lack of Maintenance Plan After deployment, critical bugs may need to be fixed Secure updates Wired vs. OTA solution Firmware and application level updates On-the-fly updates Maintenance requires a clear plan sell and forget won t work 6 13 April 2018 Embedded Conference Finland

7 Underestimating Development Effort to Multiple Targets Several code bases Several development teams Larger tooling investments Multiplied expertise needed Multiplied effort to manage device BSPs and toolchains Increased maintenance costs Scalability Low-end and high-end devices Memory footprint Run-time memory usage Multiple screens with different sizes, resolutions, pixel densities Cross-platform tools and libraries Know the real HW requirements early in the project On-target debugging Scalable technology 7 13 April 2018 Embedded Conference Finland

8 IoT Gateways Hick-ups in UI Design Lack of workflow and tools between UI designers and developers Incomprehensible UI requirements Long feedback cycles in both directions UI design ignores SW and HW capabilities UI prototyping is time-consuming Prototypes cannot be used in the real product WYSIWYG editor UI Specification Implementation & validation Graphics Design Prototyping Target validation User experience ignored Design looks beautiful, but UI transitions do not work Too late UI validation in the target HW 8 13 April 2018 Embedded Conference Finland

9 Qt Platform for IoT Devices Embedded solutions Software Stack MQTT, KNX Embedded tooling Device emulator IoT Sensor Tag demo Qt Quick 2D Renderer OTA solution Build your own stack Utils, Wifi, etc. Boot to Qt stack On-device debugging Qt Toolkit Qt Add-ons (charts, data visualization, sensors) Home Automation demo Qt Libraries Development tools Embedded Platforms elinux QNX Integrity VxWorks 9 Embedded Conference Finland

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