The current level of market adoption along with the current organization of the open source community allows for a high level of confidence regarding the longevity of the technology.
The most challenging part relates to the application migration, but for which there are possible solutions as detailed later on in this article. However, in these cases, there is a very high probability of complete redevelopment of the application due to limited compatibilities between the application framework. NET applications on non-Microsoft environments. Mono is the open source version targeting primarily Linux based environments while Xamarin is a commercial solution focused on Android or even iOS.
This framework allows cross-platform compatibility and is a good way to minimize the migration effort as most of the pre-existing.
However, it might not be a good fit when there are performances challenges, since it obviously introduces an additional intermediate layer that will impact the overall system performance Qt This application framework has significant market traction for embedded applications and is probably one of the best solutions on the market for cross-platform interoperability. However, its compatibility with multiple OS architectures such as Linux, Android, QNX, Windows and Windows CE allows having an iterative approach with some potential parallelization of the efforts: As a first step the existing.
Net application can be migrated to Qt to execute on the existing Windows CE based device, which allows validating the solution and removing all risk before moving forward with the complete OS migration. Thanks to its cross-platform interoperability, the same Qt application running on the Windows CE-based device would run with the new OS. This solution is also a good possibility when considering migrating first the device to Windows Embedded Compact 7, and later on to another OS, as the Qt-based application will be compatible with all the different OS technologies.
Original Article Published in Sept Updated on March 12th, An Embedded Software migration project? Read more. In the now defunct slotted address scheme, the currently running process is mapped into slot zero.
This was done by fixing up all pointers to reference memory in the range of zero to 32MB. By calling a function like MapPtrProcess, the currently running process can take a pointer from another process and access that memory directly in the process slot in the range 32MBMB for slot 1, 64MBMB for slot 2, and so forth. With the implementation of a private process address space, no application process can look into the address space of any other application process.
Instead, you will need to use the standard Win32 shared memory APIs to enable two processes to read and write to the same memory. One reason that this new architecture is likely to have the biggest impact on device drivers is that existing Windows CE device drivers often use functions like MapPtrProcess to read or write directly in an application's address space.
This is accomplished by linking to the appropriate set of kernel libraries k. In some cases, it might be necessary for a device driver to run in user mode instead of in kernel mode. For example, there might be a driver for which you don't want to grant full kernel mode privileges.
Such a driver can be run in CE 6. Now let's take a look at some of new features that are available with CE 6. Some are developer tool enhancements, while others are new features that you can include in custom embedded devices that you create. Many stories told by science fiction authors describe machines that behave like humans. And yet, stories are seldom written to extol the glory of machines that mimic other machines.
Isn't there something miraculous about a desktop system being able to simulate the behavior of a mobile phone? Such impersonation is actually nothing new. In fact, it is almost as old as computers themselves.
Today, of course, there's the Microsoft Virtual PC, where emulation becomes virtualization. Windows CE has seen three generations of emulators. It was a good first start, but left much to be desired. The second generation emerged as a custom embedded platform using hardware virtualization, running the same low-level instructions as a real device.
It was a very capable emulator, but had a drawback for developers who were focused on deploying to non-x86 processors since it was built using the I86 instruction set. A third-generation emulator, which ships with CE 6. This emulator ships with the CE 6. While the x86 instruction set dominates on the desktop, it has not made the same inroads in the embedded world.
The benefit of emulation at the machine instruction set level is binary compatibility. Instead of building the x86 executable files for the emulator and a second set of ARM executables for actual devices, you can create a single set of binaries and run them both. In addition to being more convenient, it also enables a higher degree of testing confidence because you test everywhere with the same executables without worrying about errors in your setup scripts, or compiler or linker bugs.
To enable machine-to-machine communication, CE 6. Another key component provided with CE 6. This component provides the low-level interface for connecting an application layer to the mobile phone hardware. Previously, to build a mobile phone on Windows CE, you had to develop your own interface layer. This is not an easy thing to do, but something that a few stalwart pioneers have done.
Among the other supporting elements in CE 6. You should note that the browsers provided with CE 6. To enable the creation of such wireless data terminals, there is rich support for SMS messaging. This is important because the mobile phone network uses SMS to send notifications for services like voice mail, fax, and e-mail. And so CE 6. Before computers became mobile, there was little interest in figuring out the computer's location. Once delivered to its air-conditioned vault, a mainframe computer never needed to figure out where it was.
With today's pocket-size systems and onboard automobile computers, the subject of location is suddenly much more interesting. A major theme of the past few years has been finding ways to improve security of all computer systems. And the CE 6. Before discussing improvements that have been made with CE 6.
The centerpiece of Windows CE security is provided by the ability for a Windows CE-powered device to maintain tight control over which applications and DLLs are allowed to load and run. A common method for identifying authorized modules is through the use of digital certificates.
Device security can be set up in a variety of different configurations. For example, in one configuration any unknown modules-those without valid certificates-can be denied any system access.
Alternatively, this mechanism can be turned off so that all modules have complete access to all system services. Another core security feature is the Cryptographic API, which allows applications to encrypt and decrypt blocks of data using a variety of encryption algorithms. And to enable secure connections with server systems, Windows CE provides support for a variety of authentication mechanisms, including the Windows NT LAN Manager protocol and the more robust Kerberos authentication protocol.
So what are the new security features with CE 6. Our focus is on being able to run on any of the available Unix and Linux flavours. This does not mean that we support all Linux flavours out of the box, but in case we find a substantial business case we will do exactly this. This includes FreeBSD. It covers over 24 major releases, with many confusing interchangeable or interlocking brand-names, including all of the following and more :.
The CE line has remained a bedrock product for Microsoft. Nevertheless, CE lives on in many industries, and probably will continue to for at least a decade in mission-critical embedded systems running legacy code. For now, the soul of Windows CE will continue to chug along in the background, doing its embedded thing on devices around the world.
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