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 <title><![CDATA[求助：2440对SD卡的裸机操作]]></title>
 <link><![CDATA[http://121.40.142.80/read.php?tid=5809]]></link>
 <description><![CDATA[Latest 20 replies of 求助：2440对SD卡的裸机操作]]></description>
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 <description><![CDATA[应该是写错了]]></description>
 <link><![CDATA[http://121.40.142.80/read.php?tid=5809#26452]]></link>
 <author><![CDATA[libailiang]]></author>
 <category><![CDATA[裸机程序和微型OS]]></category>
 <pubdate><![CDATA[Mon, 26 Apr 2010 01:11:29 +0000]]></pubdate>
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 <title><![CDATA[Re:求助：2440对SD卡的初始化]]></title>
 <description><![CDATA[请教：2440test自带的sdi.c中，#define INICLK=300000&nbsp;&nbsp;&nbsp;&nbsp;SD_card_init(void)函数中：&nbsp;&nbsp;rSDIPRE=PCLK/(INICLK)-1
此时初始化后的频率=(PCLK/(rSDIPRE+1))=300KHz， 为什么它的注释是400KHz呢？]]></description>
 <link><![CDATA[http://121.40.142.80/read.php?tid=5809#26387]]></link>
 <author><![CDATA[云鹤九霄]]></author>
 <category><![CDATA[裸机程序和微型OS]]></category>
 <pubdate><![CDATA[Sun, 25 Apr 2010 08:54:35 +0000]]></pubdate>
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 <description><![CDATA[要对SD卡操作还需要仔细阅读FAT32/16文件]]></description>
 <link><![CDATA[http://121.40.142.80/read.php?tid=5809#25976]]></link>
 <author><![CDATA[libailiang]]></author>
 <category><![CDATA[裸机程序和微型OS]]></category>
 <pubdate><![CDATA[Thu, 22 Apr 2010 02:04:57 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢版主，正在参考，昨晚对照实验手册上超级终端的输出显示，阅读了sdi.c，颇有收获，正在研究自己程序的开发！]]></description>
 <link><![CDATA[http://121.40.142.80/read.php?tid=5809#25971]]></link>
 <author><![CDATA[云鹤九霄]]></author>
 <category><![CDATA[裸机程序和微型OS]]></category>
 <pubdate><![CDATA[Thu, 22 Apr 2010 01:51:39 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[可以参考2440test, src\sdi.c中的实现]]></description>
 <link><![CDATA[http://121.40.142.80/read.php?tid=5809#25865]]></link>
 <author><![CDATA[kasim]]></author>
 <category><![CDATA[裸机程序和微型OS]]></category>
 <pubdate><![CDATA[Wed, 21 Apr 2010 08:47:56 +0000]]></pubdate>
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