📄 [原创]轻松搞定液晶lcd1602--天空遨游.htm
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<TD id=content9 vAlign=center><STRONG
style="FONT-SIZE: 14px">[原创]轻松搞定液晶LCD1602</STRONG></TD></TR>
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<DIV align=right><SPAN class=textbox-label>[
2007-5-4 17:25:00 | By: <SPAN
class=style3>micheal0715</SPAN>
]</SPAN></DIV></TD></TR></TBODY></TABLE>
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<TD><SPAN class=oblog_text><SPAN
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<P align=left><SPAN
style="FONT-SIZE: 12pt">首先你要了解LCD1602的工作时序,只有真正了解了,你才可以应用自如</SPAN></P><SPAN
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<DIV>部分引脚功能：</DIV>
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<DIV><SPAN style="COLOR: #0000cd"><SPAN
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style="FONT-SIZE: 18pt; COLOR: #0000cd; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
style="FONT-SIZE: 18pt; COLOR: #0000cd; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"></SPAN></SPAN></SPAN><SPAN
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style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"></DIV></SPAN></SPAN><SPAN
lang=EN-US
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
lang=EN-US><o:p><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
lang=EN-US></SPAN></SPAN></DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
lang=EN-US><IMG
onmousewheel="return bbimg(this)"
style="CURSOR: pointer"
onclick=javascript:window.open(this.src);
src="[原创]轻松搞定液晶LCD1602--天空遨游.files/70635.42468725.jpg"
onload=rsimg(this,300)></SPAN></SPAN></DIV><SPAN
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lang=EN-US>
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<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"></SPAN> </DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"></SPAN> </DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt">信号真值表:<SPAN
lang=EN-US><o:p></o:p></SPAN></SPAN></DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><IMG
onmousewheel="return bbimg(this)"
style="CURSOR: pointer"
onclick=javascript:window.open(this.src);
src="[原创]轻松搞定液晶LCD1602--天空遨游.files/70790.06318308.jpg"
onload=rsimg(this,300)></DIV>
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<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt">由此可得：</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt">一、写指令函数</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt">void
write_com(unsigned char com)</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt">{</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"> R/W=0;
//0：写</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"> RS=0;
//0：指令</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"> E=1;
//<SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt">下降沿
<SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt">写数据</SPAN></SPAN></DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"> LCD_DATA_PIN=com;</SPAN></SPAN></DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"> E=0;</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt">}</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt">二、写数据函数</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt">void
write_data(unsigned char data)</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt">{</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"> R/W=0;
//0：写</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"> RS=1;
//1：函数</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"> E=1;
//<SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt">下降沿
<SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt">写数据</SPAN></SPAN></DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"> LCD_DATA_PIN=data;</SPAN></SPAN></DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"> E=0;</DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt">}</DIV>
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<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 14pt"><SPAN
style="FONT-SIZE: 14pt">指</SPAN>令集</SPAN></DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 14pt"><IMG
onmousewheel="return bbimg(this)"
style="CURSOR: pointer"
onclick=javascript:window.open(this.src);
src="[原创]轻松搞定液晶LCD1602--天空遨游.files/70903.88515513.jpg"
onload=rsimg(this,300)></SPAN></DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 14pt"></SPAN> </DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 14pt"><IMG
onmousewheel="return bbimg(this)"
style="CURSOR: pointer"
onclick=javascript:window.open(this.src);
src="[原创]轻松搞定液晶LCD1602--天空遨游.files/70950.92285157.jpg"
onload=rsimg(this,300)></SPAN></DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 14pt"></SPAN> </DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 14pt"><IMG
onmousewheel="return bbimg(this)"
style="CURSOR: pointer"
onclick=javascript:window.open(this.src);
src="[原创]轻松搞定液晶LCD1602--天空遨游.files/70930.25548692.jpg"
onload=rsimg(this,300)></SPAN></DIV>
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<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt">由上面那些资料我们就可以写出驱动LCD1602的程序，下面我一一讲解：</DIV>
<DIV class=MsoNormal style="MARGIN-LEFT: 18pt"
align=left><SPAN
style="FONT-SIZE: 12pt; COLOR: #000000; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
style="FONT-SIZE: 12pt; COLOR: #000000"><SPAN
style="FONT-SIZE: 12pt; COLOR: #000000; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt">由LCD1602</SPAN>指令集的<SPAN
style="COLOR: #000000">功能设置我们可知它有两种驱动模式8位数据接口驱动和四位数据接口。</SPAN></SPAN></SPAN></DIV>
<DIV class=MsoNormal
style="MARGIN-LEFT: 18pt"><SPAN
style="FONT-SIZE: 12pt; COLOR: #000000; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
style="FONT-SIZE: 12pt; COLOR: #000000"><SPAN
style="COLOR: #000000">由于AVR单片机IO口有限我就讲四位数据接口驱动模式，由于我们很少读LCD1602里面的数据所以我们可以<SPAN
style="COLOR: #ff0000">把</SPAN><SPAN lang=EN-US
style="FONT-SIZE: 12pt; COLOR: #ff4500; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt"><SPAN
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