Qt for Device Creation

Transcription

1 Qt for Device Creation Speeding up ROI & Time-to-Market with Qt Andy Nichols Software Engineer, Qt R&D, Oslo

2 Overview Problems facing Device Creators How Qt for Device Creation addresses those Problems Boot to Qt pre-built reference stack Demonstrations 2

3 Problems facing Device Creators (Software) Finding an Software Development Kit Interfacing with Hardware Finding Middleware to accelerate development Tooling that enables rapid iterative development 3

4 Software Development Kits for Device Creation System Images Software that runs on the hardware Toolchain Compilers Tools Sysroot Development files for system image 4

5 Operating System SDK: Linux Yocto Buildroot Ubuntu/Debian Board Support Packages (BSP) Linux kernel (patches) Graphics Drivers Radio hardware firmware Wi-Fi Bluetooth NFC GSM 5

6 Operating System SDK: Android AOSP (Android Open Source Project) Linux/Android Kernel Standardized platform Graphics Multimedia Pre-Built Images Google s Android SDK + NDK 6

7 Operating System SDK: Windows Embedded Pre-built images from hardware vendors. Microsoft provides SDK and Tooling (Visual Studio) 7

8 Operating System SDK: RTOS(s) QNX, VxWorks Need to go through the RTOS provider to get the image and SDK 8

9 Interfacing with Device Hardware Camera and Sensors GPU OpenGL OpenCL/CUDA Radio (Wi-Fi, Bluetooth, NFC) Serial, CAN, i 2 c Audio Display Application Qt Libraries Platform Native Interfaces Linux Android Windows Embedded QNX VxWorks 9

10 Accelerating Development with Qt Middleware 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 10

11 Qt Developer Offering, Cross-Platform APIs Essentials GUI Widgets C++ Native LAF Layouts Styles OpenGL Qt Quick QML Controls Layouts Styles OpenGL WebEngine + WebView HTML 5 Hybrid UIs Charts SVG Canvas 3D Add-ons Data Visualization Virtual Keyboard Core Multimedia Network Serial Port Bluetooth non-gui Processes Threads IPC Containers I/O Strings Etc. Audio Video Radio Camera Sql SQL and Oracle databases HTTP FTP TCP/UDP SSL Qt Test Positioning Printing NFC XML Image formats Concurrency Scripting Platform Extras Sensors In-App Purchasing 11

12 Tooling for Rapid Iterative Development IDE (Integrated Development Environment) Ease of deployment to devices Remote debugging and profiling Simulation/Emulation of devices 12

13 Qt Creator

14 XML Bluetooth Positioning NFC Serial Port Rapid Workflow with Qt Quick Qt Quick Declarative UI Design Designer Modern User Interfaces, written with QML. Ideal for rapid UI prototyping. Imperative Logic Power of Cross-Platform Native Qt/C++ Developer Core Network Sql Processes, Threads, IPC, Containers, I/O, Strings, Etc. HTTP FTP SSL SQL & Oracle Databases + Direct Hardware Access 14

15 Boot to Qt: Pre-built Reference Stack 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 15

16 Immediate Prototyping with a Reference Stack: Boot to Qt

17 Demo Time!

18 Embedded Linux: Building your own Qt Toolchain Sysroot Yocto/Buildroot Existing image Host machine vs Target Image 18

19 Qt Configure Arguments for Cross-Compilation -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} 19

20 Demo: Adding new Device Kit to Qt Creator

21 Thank You!