?? 自制easy 51pro串行編程器.htm
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<p class=MsoNormal style='margin-left:92.2pt;text-indent:33.8pt;mso-char-indent-count:
1.3'><span style='font-size:26.0pt;font-family:宋體;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>自制</span><span lang=EN-US
style='font-size:26.0pt'>Easy 51Pro</span><span style='font-size:26.0pt;
font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>串行編程器</span><span lang=EN-US style='font-size:26.0pt'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span style='font-family:宋體;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>這次編程器程序采用了</span><span
class=SpellE><span lang=EN-US>Keil</span></span><span lang=EN-US> C</span><span
style='font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>進行編寫（臨時學的），代碼更容易看懂，也更容易修改。硬件上，電路圖還是采用了原來那種直觀的畫法。編程器的</span><span
lang=EN-US>12v/5v/0v</span><span style='font-family:宋體;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>切換控制電路代替了原來的</span><span
lang=EN-US>12v/5v</span><span style='font-family:宋體;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>切換控制電路，這樣就可以支持</span><span lang=EN-US>AT89C2051</span><span
style='font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>系列了。原來電路用了<span class=GramE>兩個晶振</span>，這次省去了一個。</span></p>
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<p class=MsoNormal style='text-indent:21.0pt'><span style='font-family:宋體;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>根據這個電路程序就是這樣寫了：</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US>void
SetVpp5V()//</span><span style='font-family:宋體;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>設置</span><span class=SpellE><span
lang=EN-US>Vpp</span></span><span style='font-family:宋體;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>為</span><span
lang=EN-US>5v</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US>{</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><span
style='mso-tab-count:1'> </span>P3_4=0;</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><span
style='mso-tab-count:1'> </span>P3_3=0;</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US>}</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US>void
SetVpp0V()//</span><span style='font-family:宋體;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>設置</span><span class=SpellE><span
lang=EN-US>Vpp</span></span><span style='font-family:宋體;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>為</span><span
lang=EN-US>0v</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US>{</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><span
style='mso-tab-count:1'> </span>P3_3=0;</span></p>
<p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><span
style='mso-tab-count:1'> </span>P3_4=1;</span></p>
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