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<!-- Copyright (C) 2003 Red Hat, Inc. --><!-- This material may be distributed only subject to the terms --><!-- and conditions set forth in the Open Publication License, v1.0 --><!-- or later (the latest version is presently available at --><!-- http://www.opencontent.org/openpub/). --><!-- Distribution of the work or derivative of the work in any --><!-- standard (paper) book form is prohibited unless prior --><!-- permission is obtained from the copyright holder. --><HTML><HEAD><TITLE>Key Features</TITLE><meta name="MSSmartTagsPreventParsing" content="TRUE"><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="eCos User Guide"HREF="ecos-user-guide.html"><LINKREL="UP"TITLE="Introduction"HREF="user-guide-introduction.html"><LINKREL="PREVIOUS"TITLE="Introduction"HREF="user-guide-introduction.html"><LINKREL="NEXT"TITLE="eCos Overview"HREF="ecos-overview.html"></HEAD><BODYCLASS="CHAPTER"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLESUMMARY="Header navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">eCos User Guide</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="user-guide-introduction.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom"></TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="ecos-overview.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="CHAPTER"><H1><ANAME="ECOS-KEY-FEATURES">Chapter 1. Key Features</H1><P></P><UL><LI><P><SPANCLASS="PRODUCTNAME">eCos</SPAN> is distributed under the GPLlicense with an exception which permits proprietary application codeto be linked with <SPANCLASS="PRODUCTNAME">eCos</SPAN> without itself beingforced to be released under the GPL. It is also royalty and buyoutfree.</P></LI><LI><P>As an Open Source project, <SPANCLASS="PRODUCTNAME">eCos</SPAN> isunder constant improvement, with an active developer community, basedaround the <SPANCLASS="PRODUCTNAME">eCos</SPAN> web site at <AHREF="http://sources.redhat.com/ecos/"TARGET="_top">http://sources.redhat.com/ecos/</A>.</P></LI><LI><P>Powerful GUI-based configuration system allowing both large andfine grained configuration of <SPANCLASS="PRODUCTNAME">eCos</SPAN>. Thisallows the functionality of <SPANCLASS="PRODUCTNAME">eCos</SPAN> to becustomized to the exact requirements of the application.</P></LI><LI><P>Full-featured, flexible, configurable, real time embeddedkernel. The kernel provides thread scheduling, synchronization,timer, and communication primitives. It handles hardware resourcessuch as interrupts, exceptions, memory and caches.</P></LI><LI><P>The Hardware Abstraction Layer (HAL) hides the specific featuresof each supported CPU and platform, so that the kernel and otherrun-time components can be implemented in a portable fashion.</P></LI><LI><P>Support for µITRON and POSIX Application ProgrammerInterfaces (APIs). It also includes a fully featured, thread-safe ISOstandard C library and math library.</P></LI><LI><P>Support for a wide variety of devices including many serialdevices, ethernet controllers and FLASH memories. There is alsosupport for PCMCIA, USB and PCI interconnects.</P></LI><LI><P>A fully featured TCP/IP stack implementing IP, IPv6, ICMP, UDPand TCP over ethernet. Support for SNMP, HTTP, TFTP and FTP are alsopresent.</P></LI><LI><P>The RedBoot ROM monitor is an application that uses the<SPANCLASS="PRODUCTNAME">eCos</SPAN> HAL for portability. It providesserial and ethernet based booting and debug services duringdevelopment.</P></LI><LI><P>Many components include test programs that validate thecomponents behaviour. These can be used both to check that hardware isfunctioning correctly, and as examples of<SPANCLASS="PRODUCTNAME">eCos</SPAN> usage.</P></LI><LI><P><SPANCLASS="PRODUCTNAME">eCos</SPAN> documentation included this UserGuide, the Reference Manual and the Components Writer's Guide. Theseare being continually updated as the system develops.</P></LI></UL></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLESUMMARY="Footer navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="user-guide-introduction.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ecos-user-guide.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="ecos-overview.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Introduction</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="user-guide-introduction.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><SPANCLASS="PRODUCTNAME">eCos</SPAN> Overview</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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