📄 tlc2543驱动程序(dhd0)_『与心相约』.htm
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<DIV class=tit>TLC2543驱动程序(dhd0)</DIV>
<DIV class=date>2007年06月20日 星期三 10:03</DIV>
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<P align=center><STRONG>TLC2543驱动程序(dhd0)</STRONG></P></TD></TR>
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<BLOCKQUOTE><BR>/**************************************<BR>
TLC2543驱动程序<BR>*************************************/<BR><BR>#include
<reg51.h><BR>#include
<intrins.h><BR><BR>/**************************************<BR>
2543控制引脚宏定义<BR>*************************************/<BR>#define
CLOCK p17 /*2543时钟*/<BR>#define D_IN p16 /*2543输入*/<BR>#define
D_OUT p14 /*2543输出*/<BR>#define _CS p15 /*2543片选*/<BR><BR>#define
uint unsigned int<BR>#define uchar unsigned
char<BR><BR>/**************************************<BR>
名称：delay<BR> 功能：延时模块<BR>
输入参数：n要延时的周期数<BR>
输出参数：无<BR>*************************************/<BR>void
delay(uchar n)<BR>{<BR>uchar
i;<BR>for(i=0;i<n;i++)<BR>{<BR>
_nop_();<BR>}<BR>}<BR><BR>/**************************************<BR>
名称：read2543<BR> 功能：TLC2543驱动模块<BR>
输入参数：port通道号<BR>
输出参数：ad转换值<BR>*************************************/<BR>uint
read2543(uchar port)<BR>{<BR>uint
ad=0,i;<BR>CLOCK=0;<BR>_CS=0;<BR>port<<=4;<BR>for(i=0;i<12;i++)<BR>{<BR>
if(D_OUT) ad|=0x01;<BR>
D_IN=(bit)(port&0x80);<BR>
CLOCK=1;<BR> delay(3);<BR>
CLOCK=0;<BR> delay(3);<BR>
port<<=1;<BR>
ad<<=1;<BR>}<BR>_CS=1;<BR>ad>>=1;<BR>return(ad);<BR>}<BR><BR>/**************************************<BR>
名称：main<BR> 功能：主函数<BR>
输入参数：无<BR>
输出参数：无<BR>*************************************/<BR>void
main()<BR>{uint ad;<BR>while(1)<BR>{<BR>
ad=read2543(0);<BR>}<BR>}
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