Qt for Device Creation Speeding up ROI & Time-To-Market with Qt

Qt for Device Creation Speeding up ROI & Time-to-Market with Qt

Andy Nichols Software Engineer, Qt R&D, Oslo Overview

• Problems facing Device Creators • How Qt for Device Creation addresses those Problems • Boot to Qt pre-built reference stack • Demonstrations

• Finding an Software Development Kit • Interfacing with Hardware • Finding Middleware to accelerate development • Tooling that enables rapid iterative development

• System Images • Software that runs on the hardware • Toolchain • Compilers • Tools • Sysroot • Development files for system image

• Yocto • Buildroot • Ubuntu/Debian • Board Support Packages (BSP) • Linux kernel (patches) • Graphics Drivers • Radio hardware firmware • Wi-Fi • Bluetooth • NFC • GSM

• AOSP (Android Open Source Project) • Linux/Android Kernel • Standardized platform • Graphics • Multimedia • Pre-Built Images • Google’s Android SDK + NDK

• Pre-built images from hardware vendors. • Microsoft provides SDK and Tooling (Visual Studio)

• Need to go through the RTOS provider to get the image and SDK

• Camera and Sensors • GPU Application • OpenGL • OpenCL/CUDA • Radio (Wi-Fi, Bluetooth, NFC) Qt Libraries • Serial, CAN, i2c • Audio Platform Native Interfaces • Display Windows Linux Android QNX VxWorks Embedded

• User Interface Primitives • Buttons, Checkboxes, Radio Buttons • Views • Easily converting designer’s vision into a User Interface • Look and Feel • Internationalization Support • Input methods (Virtual Keyboards, remote controls) • Integrated Web Browser • Multimedia playback

Essentials

Widgets Qt Quick WebEngine Add-ons + WebView C++ QML Charts Native LAF Controls GUI HTML 5 Layouts Layouts Hybrid UIs SVG Data Visualization Styles Styles OpenGL OpenGL Canvas 3D Virtual Keyboard

Core Multimedia Network Serial Port Bluetooth

Processes Audio HTTP Positioning Concurrency Threads Video FTP IPC Radio TCP/UDP Printing Scripting non-GUI Containers Camera SSL I/O NFC Platform Extras Strings Sql Qt Test Etc. XML Sensors SQL and Oracle databases Image formats In-App Purchasing

• IDE (Integrated Development Environment) • Ease of deployment to devices • Remote debugging and profiling • Simulation/Emulation of devices

Qt Quick

Declarative UI Design

Modern User Interfaces, written with QML. Ideal for rapid Designer UI prototyping.

Imperative Logic

Power of Cross-Platform Native Qt/C++

Developer Core Network Sql

Processes, Threads, HTTP SQL IPC, Containers, FTP

& NFC XML

I/O, Strings, SSL Oracle

Bluetooth Serial Port Serial Etc. Databases Positioning

+ Direct Hardware Access

• Lightweight Linux Stack • Without X11 (targets fbdev) • Minimum dependencies to enable most Qt features • Images and Full Development Environment available for reference hardware • Build Scripts to further customize the image and SDK for your needs

• Toolchain • Sysroot • Yocto/Buildroot • Existing image • Host machine vs Target Image

• -prefix /usr/local • Intended insall directory on device • -extprefix $SYSROOT/usr/local • Location installed on host machine by “make install” • -host prefix ~/Qt-build/ • Location to install host tools (qmake, moc, uic…) • -sysroot $SYSROOT • -device rasp-pi • Name of the devices mkspec you are targeting • -device-option CROSS_COMPILE=${location_of_toolchain}