📄 通过串口接受短消息.html
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<p class=MsoNormal style='line-height:150%;word-break:break-all'><span
lang=EN-US style='font-size:9.0pt;line-height:150%;color:blue'>[</span><span
style='font-size:9.0pt;line-height:150%;color:blue'>图文<span lang=EN-US>]</span></span><span
style='font-size:9.0pt;line-height:150%'>通过串口收发短消息<span lang=EN-US>(</span>上<span
lang=EN-US>)<o:p></o:p></span></span></p>
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style='font-size:9.0pt;line-height:150%;color:green'>荐</span><span
lang=EN-US style='font-size:9.0pt;line-height:150%'> </span><span
style='font-size:9.0pt;line-height:150%;color:#009900'>★★★★</span><span
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<p class=MsoNormal style='line-height:150%;word-break:break-all'><span
style='font-size:9.0pt;line-height:150%'>【字体：<span lang=EN-US><a
href="javascript:fontZoomA();"><span lang=EN-US><span lang=EN-US>小</span></span></a>
<a href="javascript:fontZoomB();"><span lang=EN-US><span lang=EN-US>大</span></span></a></span>】<span
lang=EN-US><o:p></o:p></span></span></p>
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<p class=MsoNormal align=center style='text-align:center;line-height:150%;
word-break:break-all'><span style='font-size:9.0pt;line-height:150%'>通过串口收发短消息<span
lang=EN-US>(</span>上<span lang=EN-US>)<o:p></o:p></span></span></p>
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<p class=MsoNormal align=center style='text-align:center;line-height:150%;
word-break:break-all'><span style='font-size:9.0pt;line-height:150%'>作者：佚名<span
lang=EN-US> </span>文章来源：<span lang=EN-US><a
href="http://blogs.ustcers.com/devzhao/articles/1426.aspx"><span lang=EN-US><span
lang=EN-US>阿冰</span></span></a> </span>点击数：<span
lang=EN-US><script language="JavaScript" src="/Article/GetHits.asp?ArticleID=81">
</script> </span>更新时间：<span lang=EN-US>2004-11-24<o:p></o:p></span></span></p>
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<p style='line-height:150%;word-break:break-all'><span
id="ArticleContent1_ArticleContent1_lblContent"><strong><span lang=EN-US
style='font-size:18.0pt;line-height:150%;font-family:宋体;mso-bidi-font-family:
宋体'>Q</span></strong><span lang=EN-US style='font-size:9.0pt;line-height:
150%'> </span><span style='font-size:9.0pt;line-height:150%'>用串口连接<span
lang=EN-US>GSM</span>手机发送和接收短消息，在应用程序中如何编程实现？ <span lang=EN-US><o:p></o:p></span></span></p>
<p style='line-height:150%;word-break:break-all'><strong><span lang=EN-US
style='font-size:18.0pt;line-height:150%;font-family:宋体;mso-bidi-font-family:
宋体'>Q</span></strong><span lang=EN-US style='font-size:9.0pt;line-height:
150%'> </span><span style='font-size:9.0pt;line-height:150%'>我们打算开发一个基于<span
lang=EN-US>GSM</span>短消息方式的<span lang=EN-US>GPS</span>系统，如何利用<span
lang=EN-US>SMS</span>进行数据通信？<span lang=EN-US><o:p></o:p></span></span></p>
<p style='line-height:150%;word-break:break-all'><strong><span lang=EN-US
style='font-size:18.0pt;line-height:150%;font-family:宋体;mso-bidi-font-family:
宋体'>A</span></strong><span lang=EN-US style='font-size:9.0pt;line-height:
150%'> </span><span style='font-size:9.0pt;line-height:150%'>首先，我们要对由<span
lang=EN-US>ESTI</span>制订的<span lang=EN-US>SMS</span>规范有所了解。与我们讨论的短消息收发有关的规范主要包括<span
lang=EN-US>GSM 03.38</span>、<span lang=EN-US>GSM 03.40</span>和<span
lang=EN-US>GSM 07.05</span>。前二者着重描述<span lang=EN-US>SMS</span>的技术实现<span
lang=EN-US>(</span>含编码方式<span lang=EN-US>)</span>，后者则规定了<span lang=EN-US>SMS</span>的<span
lang=EN-US>DTE-DCE</span>接口标准<span lang=EN-US>(AT</span>命令集<span lang=EN-US>)</span>。<span
lang=EN-US><br>
</span>一共有三种方式来发送和接收<span lang=EN-US>SMS</span>信息：<span lang=EN-US>Block
Mode, Text Mode</span>和<span lang=EN-US>PDU Mode</span>。<span lang=EN-US>Block
Mode</span>已是昔日黄花，目前很少用了。<span lang=EN-US>Text Mode</span>是纯文本方式，可使用不同的字符集，从技术上说也可用于发送中文短消息，但国内手机基本上不支持，主要用于欧美地区。<span
lang=EN-US>PDU Mode</span>被所有手机支持，可以使用任何字符集，这也是手机默认的编码方式。<span lang=EN-US>Text
Mode</span>比较简单，而且不适合做自定义数据传输，我们就不讨论了。下面介绍的内容，是在<span lang=EN-US>PDU Mode</span>下发送和接收短消息的实现方法。<span
lang=EN-US><br>
PDU</span>串表面上是一串<span lang=EN-US>ASCII</span>码，由‘<span lang=EN-US>0</span>’<span
lang=EN-US>-</span>‘<span lang=EN-US>9</span>’、 ‘<span lang=EN-US>A</span>’<span
lang=EN-US>-</span>‘<span lang=EN-US>F</span>’这些数字和字母组成。它们是<span lang=EN-US>8</span>位字节的十六进制数，或者<span
lang=EN-US>BCD</span>码十进制数。<span lang=EN-US>PDU</span>串不仅包含可显示的消息本身，还包含很多其它信息，如<span
lang=EN-US>SMS</span>服务中心号码、目标号码、回复号码、编码方式和服务时间等。发送和接收的<span lang=EN-US>PDU</span>串，结构是不完全相同的。我们先用两个实际的例子说明<span
lang=EN-US>PDU</span>串的结构和编排方式。<span lang=EN-US><o:p></o:p></span></span></p>
<p style='line-height:150%;word-break:break-all'><span style='font-size:9.0pt;
line-height:150%'>例<span lang=EN-US>1 </span>发送：<span lang=EN-US>SMSC</span>号码是<span
lang=EN-US>+8613800250500</span>，对方号码是<span lang=EN-US>13851872468</span>，消息内容是“<span
lang=EN-US>Hello!</span>”。从手机发出的<span lang=EN-US>PDU</span>串可以是<span
lang=EN-US><br>
08 91 68 31 08 20 05 05 F0 11 00 0D 91 68 31 58 81 27 64 F8 00 00 00 06 C8 32
9B FD 0E 01<br>
</span>对照规范，具体分析：<span lang=EN-US><o:p></o:p></span></span></p>
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