posix-device-and-class-specific-functions.html
来自「有关ecos2。0介绍了实时嵌入式的结构以及线程调度的实现和内存的管理等」· HTML 代码 · 共 253 行
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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>Device and Class Specific Functions [POSIX Section 7]</TITLE><meta name="MSSmartTagsPreventParsing" content="TRUE"><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="eCos Reference Manual"HREF="ecos-ref.html"><LINKREL="UP"TITLE="POSIX Standard Support"HREF="posix-standard-support.html"><LINKREL="PREVIOUS"TITLE="Input and Output [POSIX Section 6]"HREF="posix-input-and-output.html"><LINKREL="NEXT"TITLE="C Language Services [POSIX Section 8]"HREF="posix-c-language-services.html"></HEAD><BODYCLASS="SECT1"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 Reference Manual</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="posix-input-and-output.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Chapter 31. POSIX Standard Support</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="posix-c-language-services.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="POSIX-DEVICE-AND-CLASS-SPECIFIC-FUNCTIONS">Device and Class Specific Functions [POSIX Section 7]</H1><DIVCLASS="SECT2"><H2CLASS="SECT2"><ANAME="AEN13079">Functions Implemented</H2><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN">speed_t cfgetospeed( const struct termios *termios_p ); int cfsetospeed( struct termios *termios_p, speed_t speed ); speed_t cfgetispeed( const struct termios *termios_p ); int cfsetispeed( struct termios *termios_p, speed_t speed ); int tcgetattr( int fd, struct termios *termios_p ); int tcsetattr( int fd, int optional_actions, const struct termios *termios_p ); int tcsendbreak( int fd, int duration ); int tcdrain( int fd );int tcflush( int fd, int queue_selector ); int tcsendbreak( int fd, int action );</PRE></TD></TR></TABLE></DIV><DIVCLASS="SECT2"><H2CLASS="SECT2"><ANAME="AEN13082">Functions Omitted</H2><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN">pid_t tcgetpgrp( int fd ); int tcsetpgrp( int fd, pid_t pgrp );</PRE></TD></TR></TABLE></DIV><DIVCLASS="SECT2"><H2CLASS="SECT2"><ANAME="AEN13085">Notes</H2><P></P><UL><LI><P> Only the functionality relevant to basic serial device control is implemented. Only very limited support for canonical input is provided, and then only via the “tty” devices, not the “serial” devices. None of the functionality relevant to job control, controlling terminals and sessions is implemented. </P></LI><LI><P> Only <SPANCLASS="emphasis"><ICLASS="EMPHASIS">MIN</I></SPAN> = 0 and <SPANCLASS="emphasis"><ICLASS="EMPHASIS">TIME</I></SPAN> = 0 functionality is provided. </P></LI><LI><P> Hardware flow control is supported if the underlying device driver and serial port support it. </P></LI><LI><P> Support for break, framing and parity errors depends on the functionality of the hardware and device driver. </P></LI></UL></DIV></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="posix-input-and-output.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ecos-ref.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="posix-c-language-services.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Input and Output [POSIX Section 6]</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="posix-standard-support.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">C Language Services [POSIX Section 8]</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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