intel pxa27x平台中的uart接口驱动 （摘录曾慧鹏） - 丁雷专栏 - csdnblog.htm

来自「arm体系结构和编程,一份很好的ARM汇编编程资料」· HTM 代码 · 共 1,294 行 · 第 1/5 页

                    control, 
                    eventTarget,
                    null, 
                    null, 
                    imageUrlDuringCallBack, 
                    textDuringCallBack, 
                    postCallBackFunction, 
                    preProcessOut
                );
		    },
		    null,
		    includeControlValuesWithCallBack,
		    updatePageAfterCallBack
	    );
    }
}

function AnthemListControl_OnClick(
    e,
	causesValidation,
	validationGroup,
	textDuringCallBack,
	enabledDuringCallBack,
	preCallBackFunction,
	postCallBackFunction,
	callBackCancelledFunction,
	includeControlValuesWithCallBack,
	updatePageAfterCallBack
) {
	var target = e.target || e.srcElement;
	if (target.nodeName.toUpperCase() == "LABEL" && target.htmlFor != '')
	    return;
	var eventTarget = target.id.split("_").join("$");
	Anthem_FireCallBackEvent(
	    target, 
	    e,
	    eventTarget, 
	    '', 
	    causesValidation, 
	    validationGroup, 
	    '',
	    textDuringCallBack, 
	    enabledDuringCallBack, 
	    preCallBackFunction, 
	    postCallBackFunction, 
	    callBackCancelledFunction, 
	    true, 
	    true
	);
}

function GetLabelText(id) {
    var labels = document.getElementsByTagName('label');
    for (var i = 0; i < labels.length; i++) {
        if (labels[i].htmlFor == id) {
            return labels[i].innerHTML;
        }
    }
    return null;
}

function SetLabelText(id, text) {
    var labels = document.getElementsByTagName('label');
    for (var i = 0; i < labels.length; i++) {
        if (labels[i].htmlFor == id) {
            labels[i].innerHTML = text;
            return;
        }
    }
}

//]]>
</SCRIPT>

<SCRIPT 
src="C:\Documents and Settings\Administrator\My Documents\嵌入式技术\Intel PXA27x平台中的UART接口驱动 （摘录曾慧鹏） - 丁雷专栏 - CSDNBlog.files\WebResource(1).axd" 
type=text/javascript></SCRIPT>

<SCRIPT type=text/javascript>
<!--
function WebForm_OnSubmit() {
if (typeof(ValidatorOnSubmit) == "function" && ValidatorOnSubmit() == false) return false;
return true;
}
// -->
</SCRIPT>
 
<DIV id=top>
<DIV>
<TABLE>
  <TBODY>
  <TR>
    <TD class=HeaderTitles>
      <H1><A class=headermaintitle id=Header1_HeaderTitle 
      href="http://blog.csdn.net/suck666/">丁雷专栏</A></H1>
      <P id=tagline>追求梦想</P></TD></TR></TBODY></TABLE></DIV>
<DIV class=HeaderBar>
<TABLE class=HeaderBar id=HeaderBar>
  <TBODY>
  <TR>
    <TD class=HeaderBarTab noWrap>&nbsp; <A href="http://www.csdn.net/" 
      target=_blank>CSDN</A>&nbsp;|&nbsp; <A href="http://community.csdn.net/" 
      target=_blank>社区</A>&nbsp;|&nbsp; <A href="http://dev.csdn.net/" 
      target=_blank>技术中心</A>&nbsp;|&nbsp; <A id=Header1_MyLinks1_HomeLink 
      title=到聚合站点 href="http://blog.csdn.net/" 
      target=_blank>BLOG首页</A>&nbsp;|&nbsp; <A id=Header1_MyLinks1_PersonalHome 
      title="访问 丁雷专栏" href="http://blog.csdn.net/suck666/" 
      target=_blank>我的首页</A>&nbsp;|&nbsp; <A id=Header1_MyLinks1_PersonalResume 
      href="http://job.csdn.net/resumes/suck666.aspx">个人档案</A>&nbsp;|&nbsp; <A 
      id=Header1_MyLinks1_ContactLink accessKey=9 
      href="http://blog.csdn.net/suck666/contact.aspx">联系作者</A>&nbsp;|&nbsp; <A 
      id=Header1_MyLinks1_Syndication 
      href="http://blog.csdn.net/suck666/Rss.aspx">聚合</A> <A class=XMLLink 
      id=Header1_MyLinks1_XMLLink 
      href="http://blog.csdn.net/suck666/Rss.aspx"><IMG 
      src="Intel PXA27x平台中的UART接口驱动 （摘录曾慧鹏） - 丁雷专栏 - CSDNBlog.files/xml.gif" 
      border=0></A>&nbsp;|&nbsp; <A id=Header1_MyLinks1_HyperLink1 
      href="http://search.csdn.net/search_blog.asp" 
      target=_blank>搜索</A>&nbsp;|&nbsp; <A id=Header1_MyLinks1_Admin 
      href="http://writeblog.csdn.net/">登录</A> <IMG id=Header1_BlueTab 
      src="Intel PXA27x平台中的UART接口驱动 （摘录曾慧鹏） - 丁雷专栏 - CSDNBlog.files/BlueTabRight.jpg" 
      align=absMiddle border=0> </TD>
    <TD class=HeaderBarTabBack noWrap width="100%">
      <DIV class=BlogStatsBar>
      <TABLE class=BlogStatsBar>
        <TBODY>
        <TR>
          <TD width="100%"></TD>
          <TD class=BlogStatsBar noWrap>&nbsp; 0篇原创: 0篇翻译: 0篇转载: 0次点击: 
            0个评论<SPAN style="DISPLAY: none">: 0个Trackbacks</SPAN> 
      </TD></TR></TBODY></TABLE></DIV></TD></TR></TBODY></TABLE></DIV></DIV>
<DIV id=leftmenu>
<H3 class=listtitle>文章</H3>
<UL class=list>
  <LI class=listitem><A 
  href="http://blog.csdn.net/suck666/category/264412.aspx">wince</A><A 
  href="http://blog.csdn.net/suck666/category/264412.aspx/rss">(RSS)</A>
  <LI class=listitem><A 
  href="http://blog.csdn.net/suck666/category/265842.aspx">生活</A><A 
  href="http://blog.csdn.net/suck666/category/265842.aspx/rss">(RSS)</A></LI></UL>
<H3 class=listtitle>收藏</H3>
<UL class=list></UL>
<H3 class=listtitle>相册</H3><!--category title-->
<UL class=list></UL>
<H3 class=listtitle>wince</H3>
<UL class=list></UL>
<H3 class=listtitle>存档</H3>
<UL class=list>
  <LI><A 
  href="http://blog.csdn.net/suck666/archive/2006/12.aspx">2006年12月(4)</A></LI></UL><SPAN 
id=Anthem_RecentComments_ltlComments__><SPAN 
id=RecentComments_ltlComments></SPAN></SPAN><BR><BR></DIV>
<DIV id=main>
<DIV class=Tag>
<SCRIPT language=javascript 
src="Intel PXA27x平台中的UART接口驱动 （摘录曾慧鹏） - 丁雷专栏 - CSDNBlog.files/urltag.aspx"></SCRIPT>

<DIV style="CLEAR: both"></DIV></DIV>
<SCRIPT>function StorePage(){d=document;t=d.selection?(d.selection.type!='None'?d.selection.createRange().text:''):(d.getSelection?d.getSelection():'');void(keyit=window.open('http://www.365key.com/storeit.aspx?t='+escape(d.title)+'&u='+escape(d.location.href)+'&c='+escape(t),'keyit','scrollbars=no,width=475,height=575,left=75,top=20,status=no,resizable=yes'));keyit.focus();}</SCRIPT>

<DIV class=post>
<DIV class=postTitle><A 
href="http://blog.csdn.net/suck666/archive/2006/12/21/"><IMG height=13 
src="Intel PXA27x平台中的UART接口驱动 （摘录曾慧鹏） - 丁雷专栏 - CSDNBlog.files/authorship.gif" 
width=15 border=0>&nbsp;Intel PXA27x平台中的UART接口驱动 （摘录曾慧鹏）</A> </DIV>
<DIV class=postText>&nbsp;
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"><FONT 
size=3>一、铺垫</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><FONT 
size=3><SPAN lang=EN-US><FONT face="Times New Roman">UART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">是一种非常古老但是却一直保存在现有计算机系统中的接口，它可以把处理器对数据的并行处理转换成为串行的数据加以传输，这种接口非常简单但是依然特别常用，目前的嵌入式微处理器都</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">Build-In</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">了这种接口。</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><FONT 
size=3><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">本人有幸在项目中接触了</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">PXA270</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">处理器，针对其中的</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">UART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">做过一些研究，想通过本文和大家分享。</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><FONT 
size=3><SPAN lang=EN-US><FONT face="Times New Roman">PXA270</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">中有三个</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">UART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">接口，分别叫</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">FFUART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">、</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">BTUART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">和</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">STUART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">，可以同时进行三个串口通讯。</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><FONT 
size=3><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT 
size=3><V:SHAPETYPE id=_x0000_t75 coordsize="21600,21600" o:spt="75" 
o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" 
stroked="f"><V:STROKE joinstyle="miter"></V:STROKE><V:FORMULAS><V:F 
eqn="if lineDrawn pixelLineWidth 0"></V:F><V:F eqn="sum @0 1 0"></V:F><V:F 
eqn="sum 0 0 @1"></V:F><V:F eqn="prod @2 1 2"></V:F><V:F 
eqn="prod @3 21600 pixelWidth"></V:F><V:F 
eqn="prod @3 21600 pixelHeight"></V:F><V:F eqn="sum @0 0 1"></V:F><V:F 
eqn="prod @6 1 2"></V:F><V:F eqn="prod @7 21600 pixelWidth"></V:F><V:F 
eqn="sum @8 21600 0"></V:F><V:F eqn="prod @7 21600 pixelHeight"></V:F><V:F 
eqn="sum @10 21600 0"></V:F></V:FORMULAS><V:PATH o:extrusionok="f" 
gradientshapeok="t" o:connecttype="rect"></V:PATH><O:LOCK aspectratio="t" 
v:ext="edit"></O:LOCK></V:SHAPETYPE><V:SHAPE id=_x0000_s1027 
style="WIDTH: 376.15pt; HEIGHT: 236.65pt; mso-position-horizontal: absolute; mso-position-horizontal-relative: char; mso-position-vertical: absolute; mso-position-vertical-relative: line" 
type="#_x0000_t75" fillcolor="#cc0"><V:IMAGEDATA 
src="file:///C:\DOCUME~1\FRED~1.ZEN\LOCALS~1\Temp\msohtml1\10\clip_image001.png" 
o:title=""></V:IMAGEDATA><W:WRAP 
type="none"></W:WRAP><W:ANCHORLOCK></W:ANCHORLOCK></V:SHAPE></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" 
align=center><FONT size=3><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"><IMG 
alt="" 
src="Intel PXA27x平台中的UART接口驱动 （摘录曾慧鹏） - 丁雷专栏 - CSDNBlog.files/Snap0.jpg"></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" 
align=center><FONT size=3><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"></SPAN></FONT>&nbsp;</P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" 
align=center><FONT size=3><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">图</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">1 FFUART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">的外部接口</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><FONT 
size=3><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">其中</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">FFUART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">是一个接口最齐全的实现了所有的</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">UART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">特性的接口，另外两个接口都是</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">FFUART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">的精简版，意思就是对一些不需要的信号线进行了删减。图</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">是</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">FFUART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">（</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">FullFunction</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">）的外部接口图，拥有</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">8</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">根符合</SPAN><ST1:CHMETCNV 
tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="16550" 
unitname="a" w:st="on"><SPAN lang=EN-US><FONT 
face="Times New Roman">16550A</FONT></SPAN></ST1:CHMETCNV><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">标准的信号线（地线除外）。</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">FFUART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">可以用来处理任何和</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">UART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">兼容的通信；接下来是</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">BTUART</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">（</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">BlueTooth</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">），从它的名字可以知道它是推荐给</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">BT(</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">蓝牙</SPAN><SPAN 
lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">使用的接口，它拥有常用的四根信号线</SPAN><SPAN