📄 利用pc的rs232口控制led灯.mht
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href=3D"http://www.edn21.cn/bbs/viewpro.php?uid=3D1"=20
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border=3D0></A> </DIV></DIV></TD></TR>
<TR>
<TD class=3Dline style=3D"PADDING-TOP: 10px" vAlign=3Dtop =
height=3D"100%">
<DIV style=3D"FLOAT: right" align=3Dright><A =
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class=3Dbold>=C0=FB=D3=C3PC=B5=C4RS232=BF=DA=BF=D8=D6=C6LED=B5=C6</SPAN><=
BR><BR>
<DIV class=3Dt_msgfont id=3Dmessage4135>
<P align=3Dleft>=CA=B5=D1=E9=C4=BF=B1=EA</P>
<BLOCKQUOTE>
<P=20
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align=3Dleft>=CD=A8=B9=FD=B1=BE=CA=B5=D1=E9=D1=A7=CF=B0PC=BB=FA=B4=AE=BF=DA=
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<P align=3Dleft>=CA=B5=CE=EF=CD=BC</P>
<P align=3Dcenter><IMG onmousewheel=3D"return =
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{window.open('http://www.ouravr.com/attachment/app_using_pc_rs232_to_ctro=
nl_avr_led_pic_0.jpg');}"=20
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<P align=3Dleft>=CA=B5=D1=E9=B5=E7=C2=B7</P>
<P align=3Dcenter><A=20
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href=3D"http://www.ouravr.com/attachment/app_using_pc_rs232_to_ctronl_avr=
_led_sch.pdf"=20
target=3D_blank><IMG onmousewheel=3D"return imgzoom(this);"=20
onmouseover=3D"if(this.width>screen.width*0.7) =
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this.style.cursor=3D'hand'; this.alt=3D'Click here to open new =
window\nCTRL+Mouse wheel to zoom in/out';}"=20
onclick=3D"if(!this.resized) {return true;} else =
{window.open('http://www.ouravr.com/attachment/app_using_pc_rs232_to_ctro=
nl_avr_led_sch_small.jpg');}"=20
alt=3D""=20
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src=3D"http://www.ouravr.com/attachment/app_using_pc_rs232_to_ctronl_avr_=
led_sch_small.jpg"=20
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<BLOCKQUOTE>
<P=20
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align=3Dleft>PC=BB=FA=B4=AE=BF=DA=B4=F3=BC=D2=B6=BC=B2=BB=BB=E1=C4=B0=C9=FA=
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=E9=B2=C9=D3=C3NIH232CP=D0=BE=C6=AC=C0=B4=CD=EA=B3=C9=B4=AE=BF=DA=BD=D3=BF=
=DA=B5=E7=C2=B7=A3=ACNIH232=BA=CDMAX232=BF=C9=D2=D4=D6=B1=BD=D3=BB=A5=BB=BB=
=A1=A3</P>
<P=20
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<P align=3Dcenter><IMG onmousewheel=3D"return =
imgzoom(this);"=20
onmouseover=3D"if(this.width>screen.width*0.7) =
{this.resized=3Dtrue; this.width=3Dscreen.width*0.7; =
this.style.cursor=3D'hand'; this.alt=3D'Click here to open new =
window\nCTRL+Mouse wheel to zoom in/out';}"=20
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nl_avr_led_RS232.jpg');}"=20
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<BLOCKQUOTE>
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<BLOCKQUOTE>
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<P =
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<BLOCKQUOTE>
<P align=3Dleft>void UART_init(void)<BR>{<BR>UCSRB =3D =
BIT(RXCIE)|=20
BIT(RXEN) |BIT(TXEN); =
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//=C9=E8=D6=C3=B4=AE=BF=DA=B2=A8=CC=D8=C2=CA=CE=AA9600 =
<BR>UCSRC =3D BIT(URSEL)|BIT(UCSZ1)|BIT(UCSZ0);=20
=
//=D6=A1=BD=E1=B9=B9=CE=AA8=CE=BB=CA=FD=BE=DD=A3=AB1=CE=BBstop=CE=BB<BR>}=
</P></BLOCKQUOTE>
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=A3=B2=D9=D7=F7=B7=BD=B7=A8=C8=E7=CF=C2=A3=BA</P>
<BLOCKQUOTE>
<P =
align=3Dleft>1.=D4=DAICC=D6=D0=D0=C2=BD=A8=D2=BB=B8=F6=CE=C4=BC=FE=A3=BB<=
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<P align=3Dcenter><IMG height=3D488 alt=3D""=20
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src=3D"http://www.ouravr.com/attachment/app_using_pc_rs232_to_ctronl_avr_=
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width=3D520 border=3D0></P>
<BLOCKQUOTE>
<BLOCKQUOTE>
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=A1=A2=B2=A8=CC=D8=C2=CA9600=A1=A2=CA=FD=BE=DD=CE=BB8=CE=BB=A1=A2=BD=D3=CA=
=D5=CD=EA=B3=C9=D6=D0=B6=CF=A1=A3</P></BLOCKQUOTE></BLOCKQUOTE>
<P align=3Dcenter><IMG onmousewheel=3D"return =
imgzoom(this);"=20
onmouseover=3D"if(this.width>screen.width*0.7) =
{this.resized=3Dtrue; this.width=3Dscreen.width*0.7; =
this.style.cursor=3D'hand'; this.alt=3D'Click here to open new =
window\nCTRL+Mouse wheel to zoom in/out';}"=20
onclick=3D"if(!this.resized) {return true;} else =
{window.open('http://www.ouravr.com/attachment/app_using_pc_rs232_to_ctro=
nl_avr_led_pic_2.jpg');}"=20
alt=3D""=20
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src=3D"http://www.ouravr.com/attachment/app_using_pc_rs232_to_ctronl_avr_=
led_pic_2.jpg"=20
onload=3D"if(this.width>screen.width*0.7) =
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border=3D0></P>
<BLOCKQUOTE>
<BLOCKQUOTE>
<P =
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=BA</P>
<BLOCKQUOTE>
<P align=3Dleft>//UART0 initialize<BR>// desired baud =
rate:=20
9600<BR>// actual: baud rate:9615 (0.2%)<BR>// char =
size: 8=20
bit<BR>// parity: Disabled<BR>void=20
uart0_init(void)<BR>{<BR>UCSRB =3D 0x00; //disable =
while setting=20
baud rate<BR>UCSRA =3D 0x00;<BR>UCSRC =3D BIT(URSEL) | =
0x06;<BR>UBRRL =3D 0x33; //set baud rate lo<BR>UBRRH =
=3D 0x00;=20
//set baud rate hi<BR>UCSRB =3D=20
0x98;<BR>}</P></BLOCKQUOTE></BLOCKQUOTE>
<P=20
=
align=3Dleft>=B4=F3=BC=D2=BF=B4=BF=B4=CA=B9=D3=C3ICC=D7=D4=B6=AF=C9=FA=B3=
=C9=B5=C4=B4=FA=C2=EB=BA=CD=CE=D2=C3=C7=D7=D4=BC=BA=B1=E0=D0=B4=B5=C4=B4=FA=
=C2=EB=D6=D0UCSRC=A1=A2UBRR=A1=A2UCSRB=CA=C7=B2=BB=CA=C7=D2=BB=D1=F9=B5=C4=
=C4=D8=A3=BF<BR></P></BLOCKQUOTE>
<P =
align=3Dleft>=CD=A8=D1=B6=D0=AD=D2=E9=BC=B0=C3=FC=C1=EE(2004-10-29)</P>
<BLOCKQUOTE><BR>
<P=20
=
align=3Dleft>=CE=AA=C1=CB=B1=A3=D6=A4=B5=A5=C6=AC=BB=FA=BA=CDPC=BB=FA=B5=C4=
=D5=FD=B3=A3=BF=C9=BF=BF=B5=C4=CD=A8=D1=B6=A3=AC=B1=DC=C3=E2=CF=B5=CD=B3=B3=
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