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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 >baudrate</TITLE ><meta name="MSSmartTagsPreventParsing" content="TRUE"> <META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="eCos Reference Manual" HREF="ecos-ref.html"><LINK REL="UP" TITLE="Common Commands" HREF="common-commands.html"><LINK REL="PREVIOUS" TITLE="alias" HREF="alias-command.html"><LINK REL="NEXT" TITLE="cache" HREF="cache-command.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >eCos Reference Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="alias-command.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="cache-command.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="BAUDRATE-COMMAND">baudrate</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN2995" ></A ><H2 >Name</H2 >baudrate -- Set the baud rate for the system serial console</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN2998"><H2 >Synopsis</H2 ><P ><B CLASS="COMMAND" >baudrate</B > [-b<TT CLASS="REPLACEABLE" ><I > rate</I ></TT >]</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3003" ></A ><H2 >Arguments</H2 ><DIV CLASS="INFORMALTABLE" ><A NAME="AEN3005"><P ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><THEAD ><TR ><TH WIDTH="25%" ALIGN="LEFT" VALIGN="TOP" >Name</TH ><TH WIDTH="25%" ALIGN="LEFT" VALIGN="TOP" >Type</TH ><TH WIDTH="25%" ALIGN="LEFT" VALIGN="TOP" >Description</TH ><TH WIDTH="25%" ALIGN="LEFT" VALIGN="TOP" >Default</TH ></TR ></THEAD ><TBODY ><TR ><TD WIDTH="25%" ALIGN="LEFT" VALIGN="TOP" >-b <TT CLASS="REPLACEABLE" ><I >rate</I ></TT ></TD ><TD WIDTH="25%" ALIGN="LEFT" VALIGN="TOP" >Number</TD ><TD WIDTH="25%" ALIGN="LEFT" VALIGN="TOP" >The baud rate to use for the serial console.</TD ><TD WIDTH="25%" ALIGN="LEFT" VALIGN="TOP" ><SPAN CLASS="emphasis" ><I CLASS="EMPHASIS" >none</I ></SPAN ></TD ></TR ></TBODY ></TABLE ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3025" ></A ><H2 >Description</H2 ><P >The <B CLASS="COMMAND" >baudrate</B > command sets the baud rate for the system serial console. </P ><P >If no value is provided, then the current value of the console baud rate is displayed. </P ><P >If the system supports non-volatile configuration data via the <B CLASS="COMMAND" >fconfig</B > command (see <A HREF="persistent-state-flash.html" >the Section called <I >Persistent State Flash-based Configuration and Control</I > in Chapter 2</A >), then the value will be saved and used when the system is reset. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3033" ></A ><H2 >Examples</H2 ><P >Show the current baud rate. <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" > RedBoot> <TT CLASS="USERINPUT" ><B >baudrate</B ></TT > Baud rate = 38400</PRE ></TD ></TR ></TABLE > </P ><P >Change the console baud rate. In order to make this operation safer, there will be a slight pause after the first message to give you time to change to the new baud rate. If it doesn't work, or a less than affirmative answer is given to the "continue" prompt, then the baud rate will revert to the current value. Only after the baud rate has been firmly established will <SPAN CLASS="emphasis" ><I CLASS="EMPHASIS" >RedBoot</I ></SPAN > give you an opportunity to save the value in persistent storage. <TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" > RedBoot> <TT CLASS="USERINPUT" ><B >baudrate -b 57600</B ></TT > Baud rate will be changed to 57600 - update your settings <SPAN CLASS="emphasis" ><I CLASS="EMPHASIS" >Device baud rate changed at this point</I ></SPAN > Baud rate changed to 57600 - continue (y/n)? y Update RedBoot non-volatile configuration - continue (y/n)? n</PRE ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="alias-command.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ecos-ref.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="cache-command.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >alias</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="common-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >cache</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
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