mega8学习笔记（10_3_1）-------cocoguojia 原创--单片机实验室－－－－－嘉哥.htm

AVR学习心得体会

                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">24C</SPAN></st1:chmetcnv><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">02</SPAN><SPAN 
                        lang=EN-US 
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                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
                        </FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">在</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">Mega8</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">学习笔记（</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">10.2</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">）里我会用像</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">51</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">单片机那样写</SPAN><FONT 
                        face="Times New Roman"><st1:chmetcnv w:st="on" 
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                        Negative="False" NumberType="1" TCSC="0"><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">24C</SPAN></st1:chmetcnv><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">02</SPAN></FONT><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">的方法来写</SPAN><FONT 
                        face="Times New Roman"><SPAN lang=EN-US 
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                        w:st="on" UnitName="C" SourceValue="2" HasSpace="False" 
                        Negative="False" NumberType="1" 
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                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><o:p></o:p></SPAN></FONT></P>
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                        align=left><SPAN lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
                        </FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">在</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">Mega8</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">学习笔记（</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">10.3</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">）里我会用</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">avr</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">单片机独特的方式写</SPAN><FONT 
                        face="Times New Roman"><st1:chmetcnv w:st="on" 
                        UnitName="C" SourceValue="24" HasSpace="False" 
                        Negative="False" NumberType="1" TCSC="0"><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">24C</SPAN></st1:chmetcnv><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">02</SPAN><SPAN 
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                        align=left><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">以上三种方法均是</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">IO</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">口模拟</SPAN><FONT 
                        face="Times New Roman"><SPAN lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">I<st1:chmetcnv 
                        w:st="on" UnitName="C" SourceValue="2" HasSpace="False" 
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                        lang=EN-US><o:p><FONT 
                        face="Times New Roman">&nbsp;</FONT></o:p></SPAN></P>
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                        style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
                        align=left><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">以下就是用</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">avr</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">单片机独特的方式写</SPAN><FONT 
                        face="Times New Roman"><st1:chmetcnv w:st="on" 
                        UnitName="C" SourceValue="24" HasSpace="False" 
                        Negative="False" NumberType="1" TCSC="0"><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">24C</SPAN></st1:chmetcnv><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">02</SPAN></FONT><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">，就是用</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">IO</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">口方向的改变来是</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">IO</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">口的电平产生相应的变化，</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">scl</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">和</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">sda</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">两线上要有</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">4k7</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">到</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">10k</FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">的上拉电阻，在程序中有两处</SPAN><SPAN 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman"> <SPAN 
                        lang=EN-US>//***********</SPAN></FONT></SPAN><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">注意</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">************<o:p></o:p></FONT></SPAN></P>
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                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">第一处：要注意优先级</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><o:p></o:p></SPAN></P>
                        <P class=MsoNormal 
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                        align=left><SPAN 
                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">第二处：要注意位移的次数，不要多移哦</SPAN><SPAN 
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                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><o:p></o:p></SPAN></P>
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                        style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">现象和（</SPAN><SPAN 
                        lang=EN-US 
                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">10.1</FONT></SPAN><SPAN 
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                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman"></FONT></SPAN></P>
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                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><o:p><FONT 
                        face="Times New Roman">&nbsp;</FONT></o:p></SPAN></P>
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                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">＃i nclude &lt;mega8.h&gt;<SPAN 
                        style="mso-spacerun: yes">&nbsp;&nbsp; 
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                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">＃i nclude 
                        &lt;delay.h&gt;<o:p></o:p></FONT></SPAN></P>
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                        face="Times New Roman">&nbsp;</FONT></o:p></SPAN></P>
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                        style="FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><FONT 
                        face="Times New Roman">#define u8 unsigned char 
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