回顧歷史版本

Since 1.0

26 new major features

9 new reference MCUs

1 new reference target OS

1 new compiler support

1 new host platform

163 bug fixes

Qt for MCUs 2.2LTS長周期支持

? Qt for MCUs 2.2 is the first LTS release

? QML APIs aligned and compatible with Qt 6.2 LTS

? 1 patch release every 6-8 weeks for 18 months, starting August 2022

支持的MCU平臺

Qt for MCUs 2.2LTS新技術

文字處理

Qt for MCUs處理文字

-支持Glyph位圖字體

? 編譯時TTF自動轉換為位圖

? 極低的CPU占用

-支持Monotype Spark?字體引擎

? 專門為MCU環境設計

? 低CPU和內存占用

? 高性能矢量字體運行時繪制引擎

? 提供字體編輯工具

Monotype Spark Font Engine (TP)

國際化語言顯示文本

文本溢出處理

? What is it and why is it important?

Display dynamic text and translations that are too long to fit in limited screen space. Must-have for dynamic UIs.

? What’s new?

QML property: Text.elide

Enum values: Text.ElideNone (default), Text.ElideLeft, Text.ElideMiddle, Text.ElideRight

? What should I know?

-Behavior aligned with Qt

-Text width (or right and left anchors) must be set

-Works with multiline text if Text has an explicit height

? Learn more

https://doc-snapshots.qt.io/qtformcus-dev/qml-qtquick-text.html#elide-prop

文本自動變形

? What is it and why is it important?

Automatically wrap text when it’s wider than the available space. Must-have for dynamic UIs and multi-language applications.

? What’s new?

QML property: Text.wrapMode

Enum values: Text.NoWrap(default), Text.WordWrap, Text.WrapAnywhere, Text.Wrap

? What should I know?

-Behavior aligned with Qt

-Text width (or right and left anchors) must be set.

-Not available for StaticText

? Learn more

https://doc-snapshots.qt.io/qtformcus-dev/qml-qtquick-text.html#wrapMode-prop

圖片優化及資源管理

Qt for MCUs處理圖片

-未壓縮的RGB格式速度很快，但閃存成本非常高。

-PNG格式高壓縮率閃存占用空間低，但需要更多的RAM來保存解壓縮的數據。

-RLE壓縮，輕量級，低閃存和低RAM，并且提供足夠快的解壓縮時間。

RLE壓縮

OPTIMAL USE OF HARDWARE：Improved management of graphical resources

? Why is this valuable?

Achieve UX goals while keeping hardware costs to a minimum

? What’s new?

-New CMake APIs for graphical resource configuration

-Fine-grained placement of individual resources

? Why is it important?

Reaching the desired frame rate and fitting the GUI in memory often requires an optimized placement of resources

? Learn more

https://doc-snapshots.qt.io/qtformcus-dev/qtul-resources.html#resource-placement-in-memory

OTA GUI UPDATES：Replaceable resources in deployed applications

? Why is this valuable?

-Cheaper device firmware update process for specific use cases

-Full software recertification is not needed

? What are the use cases?

-GUI style update

-Device (re-)branding

-Downloadable GUI skins

? What’s new?

-Image resources can be replaced without re-flashing the complete application

-CMake build target to compile resource binaries

? Learn more

https://doc-snapshots.qt.io/qtformcus-dev/qtul-resources.html#ota-resources-update

新的錯誤處理機制

錯誤處理

? What is it and why is it important?

APIs to be notified of errors in GUI code and react appropriately. Enables robust and traceable applications.

? What are the use cases?

Some examples:

-detailed logging for debugging or device diagnostic

-restart the device on memory allocation failure in QUL

? What’s new?

C++ API: Qul::setErrorHandler(), QUL_ASSERT()

Enum: QulError

? What should I know?

-The default error handler prints an error message in the console.

-Custom handlers can be implemented for custom logging or mitigation actions.

? Learn more

https://doc-snapshots.qt.io/qtformcus-dev/qtul-error-handling.html

代碼生成工具qmlprojectexporter

技術預覽: qmlprojectexporter

? What is it and why is it important?

New ways to generate C++ code from a QML project, enabling new and better workflows. Possibility to build QUL applications in any IDE or build system.

? What’s new?

New project file format: .qmlproject

New command-line tools: qmlprojectexporter, platform exporter

? What should I know?

-Optional feature, users can still use the old way of building QUL applications for compatibility reasons

-Available as Tech Preview, APIs can change in v2.3

? Learn more

https://doc-snapshots.qt.io/qtformcus-dev/qtul-qmlproject-qmlprojectexporter.html

https://doc-snapshots.qt.io/qtformcus-dev/qtul-qmlproject-qmlprojectexportercmd-qmlprojectfile.html

https://doc-snapshots.qt.io/qtformcus-dev/qtul-platform-exporter.html

構建APP靜態庫

Static Library Build

Example:https://doc-snapshots.qt.io/qtformcus/quickultralite-static-library-example.html

性能優化指南

Performance and footprint guide

-Achieving good performance with a low memory footprint is challenging

-New documentation with guidelines, tips, and tricks to help get the best results faster

-Instructions on how to collect performance data from the device

? Learn more

https://doc.qt.io/QtForMCUs-2.2/qtul-performance-guide.html

https://doc.qt.io/QtForMCUs-2.2/qtul-performance-logging.html

生態合作

Qt for MCUs on 杰發 ac8015：透明alpha圖片顯示

Qt完成芯馳最新車規級芯片適配，助力車載HMI創新加速

Qt for MCUs on SemiDrive – E3

Qt for MCUs on 樂鑫 Espressif ESp32-S3-BOX

Qt for MCUs on OneOS 國產思澈芯片

中國移動OneOS是為物聯網行業打造的可裁剪、跨平臺、低功耗、輕量級實時操作系統。中移物聯與Qt共同推出了Qt for MCUs-OneOS，通過OneOS的芯片適配能力，針對硬件底層進行GUI適配，可廣泛應用于表計、穿戴、家居、工業控制等行業。

“Qt for MCUs-OneOS擁有極致性能，讓我們可以快速開發、上線新應用，大大提升了生產效率。中國移動作為一家全球領先的通信運營商，擁有大量中小型企業客戶，”OneOS產品總監孫靖評價，“我們與Qt合作，一方面提升了OneOS的GUI組件平臺能力，同時也讓更多企業用戶獲得了Qt的商業軟件價值，希望未來有更多的用戶能和我們一起來共建國產物聯網操作系統的生態圈。”

Qt for MCUs助力延鋒偉世通打造單芯片車載儀表平臺

HMI及圖形渲染專家來自汽車儀表解決方案的知名供應商延鋒偉世通，團隊專注于圖形渲染、車載儀表以及智能座艙項目的研發工作。

隨著車載儀表的顯示日益復雜，越來越多的OEM或車企更愿意使用單芯片平臺來實現全液晶儀表盤的功能。在評估了市面上多個主流的GUI框架后，延鋒偉世通最終選定Qt for MCUs來開發這個基于低成本芯片的車載儀表HMI平臺：

- Qt for MCUs有非常強大的開發團隊；

- Qt for MCUs支持跨平臺方案，在開發過程中無需考慮平臺遷移的問題，極大節約了開發成本。

Qt for MCUs on AUTOSAR CLASSIC

關于Qt

Qt是一套業界領先的產品開發框架，可供前端設計師和開發人員適用于各種設備和操作系統的先進的UI/UX。

Qt被廣泛應用于70多個行業，并在全球范圍內建立了完善的生態系統——每年下載量達數百萬次。

Qt擁有強大的合作伙伴生態——全球有超過100家軟件服務公司和SoC方案供應商具備Qt開發能力。

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深圳市優飛迪科技有限公司成立于2010年，是一家專注于產品開發平臺解決方案與物聯網技術開發的國家級高新技術企業。

十多年來，優飛迪科技在數字孿生、工業軟件尤其仿真技術、物聯網技術開發等領域積累了豐富的經驗，并在這些領域擁有數十項獨立自主的知識產權。同時，優飛迪科技也與國際和國內的主要頭部工業軟件廠商建立了戰略合作關系，能夠為客戶提供完整的產品開發平臺解決方案。

優飛迪科技技術團隊實力雄厚，主要成員均來自于國內外頂尖學府、并在相關領域有豐富的工作經驗，能為客戶提供“全心U+端到端服務”。