WindowsEmbeddedCompact7官方文档资源-CSDN文库

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Windows Embedded Compact 7，简称WEC7，是微软公司推出的一款面向嵌入式设备的操作系统，主要用于智能设备、工业控制、车载娱乐系统等。这款操作系统是Windows CE的后续版本，提供了一个灵活且可定制的平台，使开发者能够构建功能丰富的、高性能的嵌入式解决方案。在"Windows Embedded Compact7官方文档"中，你可以找到一系列详细的技术资料和指导，帮助开发者深入了解和利用该平台。这些文档可能涵盖以下几个核心知识点： 1. **系统架构**：WEC7基于微内核设计，其架构包括操作系统内核、设备驱动模型、文件系统、网络堆栈、多媒体支持等。了解这一部分可以帮助开发者理解系统运行的基础和组件间的关系。 2. **开发环境设置**：文档会详细阐述如何设置Visual Studio集成开发环境（IDE），包括安装必要的工具包、SDK和更新，以及配置项目设置。 3. **应用程序开发**：WEC7支持C++、.NET Compact Framework等多种编程语言。开发者可以学习如何创建、调试和优化在嵌入式设备上运行的应用程序。 4. **设备驱动开发**：对于硬件集成至关重要，WEC7提供了Device Driver Model (DDM) 和Kernel-Mode Driver Framework (KMDF)，帮助开发者为特定硬件编写驱动程序。 5. **系统定制**：WEC7的一大特色是其可定制性，文档将解释如何通过Platform Builder工具选择和裁剪组件，以满足不同设备的需求。 6. **移植指南**：针对已有应用程序或服务的迁移，官方文档会有详细的移植策略和步骤，包括代码调整、API兼容性检查等。 7. **性能优化**：为了在有限资源的嵌入式设备上获得最佳性能，文档可能会介绍内存管理、线程调度、电源管理等方面的优化技巧。 8. **安全性**：WEC7提供了安全特性，如用户权限管理、加密技术等，文档会讲解如何实施和配置这些安全机制。 9. **网络与通信**：WEC7支持多种网络协议，如TCP/IP、蓝牙、Wi-Fi等，开发者可以学习如何实现设备间的通信和联网功能。 10. **调试与测试**：为了确保软件质量，文档会提供各种调试工具和测试方法，帮助开发者查找和修复问题。 11. **系统部署**：文档还会涵盖如何创建映像文件、烧录到目标设备以及进行现场部署的过程。通过深入研究这些官方文档，开发者不仅能掌握WEC7的基本操作，还能提升在嵌入式系统领域的专业技能，为开发高质量、高效能的嵌入式应用打下坚实基础。

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Windows_Embedded_Compact7.rar （34个子文件）

Windows Embedded Compact 7

28.Window Compositor Graphics Performance Tuning Guide.pdf 133KB

18.Inside MTP Responder.pdf 153KB

22.Planning Your Device Driver.pdf 369KB

Silverlight for Windows 24.Embedded Graphics and Rendering Pipeline.pdf 159KB

Deploying Applications on a Windows Embedded Compact OS with Security Loader.pdf 87KB

20.MTP Responder Deployment Guide.pdf 494KB

1.A Sample Application Tutorial Using Windows Embedded Silverlight Tools.pdf 290KB

27.Window Compositor Developer's Guide.pdf 124KB

23.Silverlight for Windows Embedded Developer's Guide.pdf 469KB

9.Embedding Fonts in Silverlight for Windows Embedded.pdf 126KB

31Windows Embedded Compact 7 Multimedia Features.pdf 151KB

30.Windows_Embedded_Compact_7_Extensible_Platform_to_Power_Dynamic_User_Experiences.pdf 534KB

15.Implementing Your Device Driver.pdf 256KB

6.Building_Connected_Devices_in_Windows_Embedded_Compact_7.pdf 354KB

11.Extending Windows Embedded Compact 7 Media Library with a Media Parser Plug-In.pdf 195KB

5.Build Porting Guide for Windows Embedded Compact 7.pdf 141KB

4.BSP Porting Guide for Windows Embedded Compact 7.pdf 162KB

8.Developing an Operating System Design.pdf 83KB

32.Windows Embedded Compact 7 Symmetric Multiprocessing Guide.pdf 123KB

10.Expression Blend and Silverlight for Windows Embedded.pdf 127KB

16.Improving Performance in Rich User Interfaces for Embedded Systems.pdf 252KB

14.Handling Events in Silverlight for Windows Embedded.pdf 376KB

3.Bluetooth Architecture Overview.pdf 158KB

13.High_Confidence_Computing_With_The_New_Windows_Embedded_Compact_7.pdf 710KB

33.Windows Embedded CTK User Guide.pdf 311KB

17.Windows Embedded Compact 7 Improving Your Build Process.pdf 168KB

26.What's New in Platform Builder.pdf 104KB

21.Performance Tuning Guide for Silverlight for Windows Embedded.pdf 141KB

12.Getting Started with Virtual CEPC.pdf 302KB

25.The Basics of Bringing up a Hardware Platform.pdf 403KB

7.Deploying Applications on a Windows Embedded Compact OS with Security Loader.pdf 87KB

19.Windows Embedded Compact 7 Integrated Development Environment Build Process.pdf 133KB

29.Windows Embedded Compact 7 Build Process.pdf 221KB

2.Add an Existing Window Control to a Silverlight for Windows Embedded Application.pdf 97KB

High Confidence Computing with the New Windows

Embedded Compact 7

Windows Embedded Technical Article

October 2010

Applies to: Windows Embedded Compact 7

Summary: Windows® Embedded Compact 7 raises embedded development to a new level of high confidence

computing. Supports for symmetric multiprocessing and higher RAM limits enable the operating system to

take full advantage of higher performing systems now in the embedded arena. New tools now enable

developers to quickly debug any issues that occur during development. The new features and tool in Compact

7 provide a new level of confidence and reliability.

Introduction

Building a reliable computer system is always important, but for embedded systems it is essential. Windows®

Embedded Compact 7 provides a highly reliable foundation for today’s modern embedded systems. Compact

7 is the latest version of Windows® Embedded CE, complete with an updated kernel, a new network stack,

updated tools, and a variety of other new features.

Compact 7 builds on years of involvement in the embedded marketplace for Microsoft. Its purpose-built

embedded operating system is designed for high reliability, high confidence computing. Along with the

updated operating system, the Platform Builder for Windows Embedded Compact 7 tool set has also been

improved to provide top notch support for development, debugging, and support.

The Improved Kernel

The improvements in Compact 7 start with an upgraded kernel. Compact 7 is the first version of the classic

Windows Embedded CE product line to support symmetric multiprocessing (SMP). This allows the kernel to

simultaneously use multiple CPU cores by spreading different threads across the various cores of the CPU.

To demonstrate the new multi-core abilities of the operating system, a CPU load application was developed

that is similar to what is available on the desktop versions of Windows®. The following figure shows the

System Monitor usage of the application on a computer running Compact 7 while Windows® Internet

Explorer® Embedded loads a web page. Notice how the kernel takes advantage of each core on this multi-

core system.

High Confidence Computing with the New Windows Embedded Compact 7

Figure 1

Aside from performance, the primary benefit of SMP is to prevent a single, runaway thread from severely

affecting the global performance of the system. In the past, if a single thread did not block the system, even

one running at normal application priority, it would noticeably affect the user interface (UI) and the

performance of many other background threads.

In an SMP system, the runaway thread would consume the capacity of one of the cores, but the other cores in

the CPU would remain available to the operating system for other applications. The following code sample

provides a trivial example of such a nightmare scenario for an embedded system, in which an application runs

a thread at a very high priority, but does not block the system.

// LockupApp.cpp : Defines the entry point for the application.

#include "stdafx.h"

#include <windows.h>

#include <commctrl.h>

int _tmain(int argc, _TCHAR* argv[])

{

// Set thread priority to highest

CeSetThreadPriority (GetCurrentThread(), 0);

// Infinite loop

while (TRUE);

return 0;

}

High Confidence Computing with the New Windows Embedded Compact 7

On a system with a single core, the above code would seriously degrade performance. In the following figure,

the CPU System Monitor application displays the CPU usage of the Lockup application in this scenario. Notice

how the load graph for CPU 1 is at 100 percent utilization. However, the other cores are still available. In this

case, Internet Explorer runs as it downloads and displays a web page. Of course, the system is completely

responsive to the UI and the other applications in the system, even though the lockup application is running.

Figure 2

From a programming perspective, the addition of multi-core support does not affect single threaded

applications. If interested, an application can query how many cores are available on a system using the

function CeGetTotalProcessors.

While there is no need to worry about single threaded applications, multi-core systems can introduce

consequences to multithreaded applications. Multithreaded applications not tested on multi-core systems may

experience timing issues when their threads are truly executing simultaneously on separate cores instead of

sharing a single core. To avoid these issues, if an application is compiled as an earlier version of the operating

system, all the threads of the application will be assigned to the same core.

Applications compiled specifically for Windows Embedded Compact 7 are assumed to be tested for multi-core

systems, and the application threads may be distributed across all the cores. If there is a need to manage

specific thread assignments, the threads can be assigned to a core using the application programming

interface (API) CeSetThreadAffinity. All the threads of a process can be restricted to a specific core using the

function CeSetProcessAffinity.

Of course, there are the corresponding functions to query affinity, CeGetThreadAffinity and

CeGetProcessAffinity. In addition, a new idle time function GetIdleTimeEx has been added that allows

applications to query the idle time on a per-core basis.

In addition to managing processes and threads, the embedded engineer can manage the cores on the CPU. All

but the primary core of the CPU can be powered down and then powered up as needed. The appropriately

named APIs to manage the cores are CePowerOffProcessor and CePowerOnProcessor.

High Confidence Computing with the New Windows Embedded Compact 7

The addition of SMP support really improves the reliability of embedded systems. There is nothing like having

a few extra CPU cores available to handle heavy load situations, as well as errant threads to calm the worried

engineer. Simply put, multiple cores remove one of the primary causes of performance degradation on

embedded systems.

Memory Manager Updates

SMP is not the only area of improvement in the kernel. RAM capacity is improved as well. The previous

generations of Windows Embedded CE had a hard, architectural limit of 512 MB of physical RAM that the

system could manage. Some systems used more, but the operating system had no knowledge of the additional

RAM. These systems used the extra RAM as a simple input/output (I/O) buffer. The 512 MB limit came from the

hardware architectures of the MIPS and SuperH-3 (SH3) processors that were the only CPU architectures

Microsoft® Windows® CE 1.0 supported.

For a while, the RAM limit was not a big deal because Microsoft Windows® CE 5.0 provided only 32 MB of

virtual space for each application. However, after Windows® Embedded CE 6.0 ripped away this virtual space

limit by providing up to 2 GB of virtual space per application, the capabilities and footprint of some embedded

applications increased to the point that some high end systems needed more than 512 MB of RAM.

Windows Embedded Compact 7 raises the supported RAM limit to 3 GB of physical RAM. Now, Compact 7

supports enough RAM to run hundreds of applications using as much RAM as they might need. The following

figure shows a screen capture of the System Control Panel applet displaying a Compact 7 operating system

running in a Windows Virtual PC with 2 GB of available RAM.

High Confidence Computing with the New Windows Embedded Compact 7

Figure 3

Those who are familiar with the internal workings of the operating system might wonder if supporting the

additional RAM might break backward compatibility with older drivers.

Fortunately, the implementation of the new RAM support is optional. For systems that do not need more than

512 MB of RAM, the current design of using an OEMAddressTable to map the RAM into the system still works.

So in this case, there is no need to change the Board Support Package (BSP).

For systems that need the additional RAM, the BSP needs to be configured to pass a special flag in the

OEMAddressTable, and to provide two additional configuration tables: the OEMRAMTable to point to the

additional RAM, and the OEMDeviceTable to map in any uncached hardware registers. In addition, using

VirtualCopy to dynamically map in hardware still works in Windows Embedded Compact 7. The mappings can

be designed to reduce or eliminate changes to the mapped virtual addresses of the hardware.

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