📄 单片机应用ps-2键盘的实例.htm
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<DIV class=title1
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<DIV align=center>作 者： 明浩 出 处： 磁动力工作室 <A
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href="mailto:pnzwzw@cdle.net">mailto:pnzwzw@cdle.net</A>(ID196)</DIV></TD></TR>
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<TD class=l12r><BR><A
href="http://www.cdle.net/wzadmin/download.asp?autoid=199"
target=_blank>SMC1602A液晶显示屏资料</A> <A
href="http://www.cdle.net/alldata/data/04030701_SMC1602A.pdf"
target=_blank><IMG height=41 alt=点击下载PDF文件
src="单片机应用PS-2键盘的实例.files/pdf.gif" width=30
border=0></A><BR><BR>ps2key.c<BR>/*============================================================<BR>使用1602液晶显示和PS/2键盘的示例
明浩
2004/2<BR>-------------------------------------------------<BR>http://www.cdle.net
http://bbs.cdle.net<BR>==============================================================
<P>SMC1602A(16*2)模拟口线接线方式<BR>连接线图:
<BR>---------------------------------------------------<BR>|LCM-----51
| LCM-----51 | LCM------51
|<BR>--------------------------------------------------|<BR>|DB0-----P1.0
| DB4-----P1.4 | RW-------P2.0 |<BR>|DB1-----P1.1
| DB5-----P1.5 | RS-------P2.1 |<BR>|DB2-----P1.2
| DB6-----P1.6 | E--------P2.2 |<BR>|DB3-----P1.3
| DB7-----P1.7 |
VLCD接1K电阻到GND|<BR>---------------------------------------------------</P>
<P>Keyboard接线<BR>PS/2--------51<BR>1
DATA------P3.4<BR>3 GND<BR>4 VCC<BR>5
CLK-------P3.3 接在51的外部中断，触发方式为低电平</P>
<P>本程序源码只供学习参考，不得应用于商业用途，如有需要请联系作者。</P>
<P>[注:AT89x51使用12M或11.0592M晶振,实测使用11.0592M]<BR>[Keil
uV2 7.01编译运行通过 程序中没有做键盘数据的奇偶校验]</P>
<P>=============================================================*/<BR>#include
<at89x51.h><BR>#include "scancodes.h"</P>
<P>#define LCM_RW P2_0 //定义LCD引脚<BR>#define LCM_RS
P2_1<BR>#define LCM_E P2_2<BR>#define LCM_Data
P1</P>
<P>#define Key_Data P3_4 //定义Keyboard引脚<BR>#define
Key_CLK P3_3</P>
<P>#define Busy 0x80 //用于检测LCM状态字中的Busy标识</P>
<P>void LCMInit(void);<BR>void
DisplayOneChar(unsigned char X, unsigned char Y,
unsigned char DData);<BR>void
DisplayListChar(unsigned char X, unsigned char Y,
unsigned char code *DData);<BR>void
Delay5Ms(void);<BR>void Delay400Ms(void);<BR>void
Decode(unsigned char ScanCode);<BR>void
WriteDataLCM(unsigned char WDLCM);<BR>void
WriteCommandLCM(unsigned char WCLCM,BuysC);</P>
<P>unsigned char ReadDataLCM(void);<BR>unsigned
char ReadStatusLCM(void);<BR>unsigned char code
cdle_net[] = {"-www.cdle.net--"};<BR>unsigned char
code email[] = {"pnzwzw@cdle.net"};<BR>unsigned
char code Cls[] = {" "};<BR>static unsigned char
IntNum = 0; //中断次数计数<BR>static unsigned char KeyV;
//键值<BR>static unsigned char DisNum = 0;
//显示用指针<BR>static unsigned char Key_UP=0, Shift =
0;//Key_UP是键松开标识，Shift是Shift键按下标识<BR>static
unsigned char BF = 0; //标识是否有字符被收到</P>
<P>void main(void)<BR>{<BR>unsigned char
TempCyc;</P>
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