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 <title><![CDATA[tiny6410 u boot点灯不亮 向大家请教]]></title>
 <link><![CDATA[http://www.aiothome.net/read.php?tid=21845]]></link>
 <description><![CDATA[Latest 20 replies of tiny6410 u boot点灯不亮 向大家请教]]></description>
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 <description><![CDATA[如果你的板子是tiny6410的话，应该是gpk 4-7吧~ 控制寄存器&nbsp;&nbsp;应该是&nbsp;&nbsp;0x7f008800, CON0 不是 CON1，改下试试&nbsp;&nbsp;如果还不行的话 把上下拉的值赋为0.]]></description>
 <link><![CDATA[http://www.aiothome.net/read.php?tid=21845#189343]]></link>
 <author><![CDATA[kikilizhm]]></author>
 <category><![CDATA[U-boot技术交流区]]></category>
 <pubdate><![CDATA[Thu, 02 Aug 2012 14:30:29 +0000]]></pubdate>
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 <description><![CDATA[LDR r0 , =0x7F008804&nbsp;&nbsp; 
LDR r1 , =0x11111111
STR r1 , [r0]&nbsp;&nbsp; 
LDR r0, =0x7F00880C
LDR r1 , =0xffffffff
STR r1 , [ r0 ]
LDR r2 , =0x7F008808&nbsp;&nbsp; 
mov r1 , #0x0
STR r1, [r2]&nbsp;&nbsp; 
mov r1 , #0x0
STR r1 , [r2 ]&nbsp;&nbsp; 
loopwhile:&nbsp;&nbsp;
bl loopwhile
改成这样 ..]]></description>
 <link><![CDATA[http://www.aiothome.net/read.php?tid=21845#189186]]></link>
 <author><![CDATA[charles3349]]></author>
 <category><![CDATA[U-boot技术交流区]]></category>
 <pubdate><![CDATA[Thu, 02 Aug 2012 02:28:34 +0000]]></pubdate>
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 <description><![CDATA[简单看了下，你怎么用r14 r15 作为通用寄存器使用了&nbsp;&nbsp;，r13是堆栈指针(SP)，用于堆栈的。,r14是连接寄存器(LR)，用于存储调用子程序前的pc，用于子程序返回，r15是程序计数器(PC),用于指示程序运行到哪个地址的。&nbsp;&nbsp;把r14 15 改为 r0 r1 就好了&nbsp;&nbsp;~&nbsp;&nbsp;看看介绍arm的文章仔细看看这块 ..]]></description>
 <link><![CDATA[http://www.aiothome.net/read.php?tid=21845#189129]]></link>
 <author><![CDATA[kikilizhm]]></author>
 <category><![CDATA[U-boot技术交流区]]></category>
 <pubdate><![CDATA[Wed, 01 Aug 2012 16:34:26 +0000]]></pubdate>
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