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of this approach depends mostly on the CPU Prior to today's release, Qt versions already existed
interrupt structure and context-switch hardware support. for Windows desktops ("Qt/Windows"), OS X
This approach is sufficient for a large range of real-time ("Qt/Mac"), Java ("QT/Jambi"), desktop Linux ("Qt/X11")
requirements. Even without the real-time extensions, Linux and embedded Linux ("Qtopia"). Trolltech says
does pretty well at keeping up with multiple streams of QT/WinCE is a near-complete port of its API and
events. For example, a Linux PC system on a low end developer tools to Microsoft's device-oriented Windows
Pentium is able to keep multiple 10BaseT interfaces CE operating system.
executing effectively, while simultaneously running More specifically, Qt/WinCE runs on Windows CE
character-level serial ports at a full 56KBPS without losing 5.0 and 6.0 and Windows Mobile 5.0 and 6.0. The only
any data. modules not included in the ported API are QtOpenGL
Some real-time hardware and software Linux APIs to and Qt3Support, according to the company. Trolltech also
consider are RTLinux, RTAI, EL and Linux-SRT. RTLinux notes that developers wishing to access Windows
is a hard real-time Linux API originally developed at the Mobile-specific APIs, such as those for the PIM (personal
New Mexico Institute of Technology. RTAI (DIAPM) is information management) suite or telephony, must access
a spin-off of the RTLinux real-time API that was these operating system features directly, bypassing Qt.
developed by programmers at the Department of
Aerospace Engineering, Polytechnic Politecnico di Milano
(DIAPM). EL/IX is a proposed POSIX-based hard
real-time Linux API being promoted by Red Hat. And
Linux-SRT is a soft real-time alternative to real-time APIs,
which provides performance-enhancing capabilities to
any Linux program without requiring that the program be
modified or recompiled.
Qt is an application development framework aimed at various applications
enabling developers to compile binaries for Windows,
USB Device and USB Host stacks are provided with
Mac and Linux OSes from a single code base. Qt's API standard driver classes
(application programming interface) comprises some 400
ULINKpro enables on-the-fly analysis of running
C++ class libraries, Trolltech says. applications and records every executed Cortex-M
Trolltech claims its Qt API and development tools are instruction
"consistent across all supported platforms, enabling
Complete Code Coverage information about your
developers to learn one API and perform truly platform- program's execution
independent application development and deployment."
Execution Profiler and Performance Analyzer enable
It allows development teams to create native applications program optimization
for all major operating systems, from any of the supported
Numerous example projects help you quickly become
platforms, the company adds. familiar with MDK-ARM's powerful, built-in features.
The MDK-ARM is a complete software development
environment for Cortex™-M, Cortex-R4, ARM7™ and
ARM9™ processor-based devices. MDK-ARM is
specifically designed for microcontroller applications, it is
easy to learn and use, yet powerful enough for the most
demanding embedded applications.
Complete support for Cortex-M, Cortex-R4, ARM7
and ARM9 devices
Industry-leading ARM C/C++ Compilation Toolchain
µVision4 IDE, debugger and simulation environment
Keil RTX deterministic, small footprint real-time
operating system (with source code)
TCP Networking Suite offers multiple protocols and
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