📄 cs5460a芯片读取数据时经常出现读回0的状况,请教各位了_ (ourdev_cn 我们的电子开发社区).mht
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vAlign=3Dtop align=3Dleft width=3D"19%" bgColor=3D#e8e8e8 =
rowSpan=3D2>=A1=BE9=C2=A5=A1=BF <FONT=20
color=3D#000000>liangxliao </FONT><BR>=BB=FD=B7=D6=A3=BA<FONT=20
color=3D#000000>124</FONT><BR>=C5=C9=B1=F0=A3=BA<FONT =
color=3D#000000></FONT><BR>=B5=C8=BC=B6=A3=BA<FONT=20
color=3D#000000>------</FONT><BR>=C0=B4=D7=D4=A3=BA<FONT =
color=3D#000000></FONT><BR></TD>
<TD class=3Df03=20
style=3D"BORDER-RIGHT: #bbbbbb 0.5pt solid; BORDER-TOP: medium none; =
BORDER-LEFT: medium none; BORDER-BOTTOM: medium none"=20
vAlign=3Dtop width=3D"81%" bgColor=3D#e8e8e8><FONT=20
=
color=3D#000000>=C6=DA=B4=FD=D7=C5=B8=DF=CA=D6=B5=C4=BD=E2=B4=F0!!.......=
~^~</FONT> </TD></TR>
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vAlign=3Dbottom =
bgColor=3D#e8e8e8>__________________________<BR>=BF=D8=D6=C6=C0=E0=B2=FA=C6=
=B7=20
<BR>=CC=D4=B1=A6=B5=EA=A3=BAhttp://shop34384755.taobao.com =
<BR>=C5=A9=BC=D2=CC=EC=CC=EC=B5=D8=A3=AC=CF=D6=D3=D0=B4=F3=C1=BF=B7=E4=C3=
=DB=B3=F6=CA=DB,=D3=D0=D2=E2=D5=DF=C7=EB=D3=EB=CE=D2=C1=AA=CF=B5!=20
<BR>=C1=AA=CF=B5QQ:307502762 <BR></TD></TR>
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width=3D7>2007-11-29,09:34:45 </TD>
<TD class=3Df03=20
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BORDER-LEFT: medium none; BORDER-BOTTOM: #bbbbbb 0.5pt solid"=20
vAlign=3Dtop width=3D"81%" bgColor=3D#e8e8e8 ?>
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<TD align=3Dleft><IMG height=3D1=20
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href=3D"http://www.ouravr.com/bbs/user_information.jsp?user_name=3Dliangx=
liao"=20
target=3D_blank>=D7=CA=C1=CF</A> <IMG height=3D1=20
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0.5pt solid; BORDER-LEFT: #bbbbbb 0.5pt solid; BORDER-BOTTOM: #ffffff =
0.5pt solid"=20
vAlign=3Dtop align=3Dleft width=3D"19%" bgColor=3D#d1d9e2 =
rowSpan=3D2>=A1=BE10=C2=A5=A1=BF <FONT=20
color=3D#000000>zhangsai =
=D5=C5=C8=FC</FONT><BR>=BB=FD=B7=D6=A3=BA<FONT=20
color=3D#000000>124</FONT><BR>=C5=C9=B1=F0=A3=BA<FONT =
color=3D#000000></FONT><BR>=B5=C8=BC=B6=A3=BA<FONT=20
color=3D#000000>------</FONT><BR>=C0=B4=D7=D4=A3=BA<FONT =
color=3D#000000>=BA=D3=B1=B1 =B1=A3=B6=A8</FONT><BR></TD>
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vAlign=3Dtop width=3D"81%" bgColor=3D#d1d9e2><FONT=20
color=3D#000000>unsigned char receive_5460a(void) =20
<BR> { =20
<BR> unsigned char i,result=3D0; =20
<BR> SDI=3D1; =20
<BR> for(i=3D0;i<8;i++) =20
<BR> { =20
=
<BR> //if(i=3D=3D7)SDI=3D0; //=B4=
=CB=B4=A6=D3=D0=C3=BB=D3=D0=A3=AC=BA=C3=CF=F1=D5=E2=D0=A9=B5=D8=B7=BD=B6=BC=
=D2=AA=D3=D0=A3=AC=BC=B4=B6=C1=B5=C4=CD=AC=CA=B1 =D2=AA=B7=A2=CB=CD0=
xfe=20
<BR> //SCLK=3D0; =20
<BR> result<<=3D1; =20
<BR> SCLK=3D1; =20
<BR> if(SDO) =20
=
<BR> result|=3D1;&nb=
sp;=20
<BR> SCLK=3D0; =20
<BR> } =20
<BR> //SDI=3D1; =20
<BR> return(result); =
<BR> } </FONT>=20
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vAlign=3Dbottom bgColor=3D#d1d9e2>=A1=A1 </TD></TR>
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width=3D7>2007-11-29,13:23:00 </TD>
<TD class=3Df03=20
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BORDER-LEFT: medium none; BORDER-BOTTOM: #bbbbbb 0.5pt solid"=20
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href=3D"http://www.ouravr.com/bbs/user_information.jsp?user_name=3Dzhangs=
ai"=20
target=3D_blank>=D7=CA=C1=CF</A> <IMG height=3D1=20
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class=3Dtt4 =
href=3D"mailto:zhangsaidazhong@163.com">=D3=CA=BC=FE</A> <IMG height=3D1 =
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</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
<TABLE style=3D"TABLE-LAYOUT: fixed; WORD-BREAK: break-all" =
cellSpacing=3D0=20
cellPadding=3D6 width=3D"100%" border=3D0>
<TBODY>
<TR>
<TD class=3Df03=20
style=3D"BORDER-RIGHT: #bbbbbb 0.5pt solid; BORDER-TOP: medium none; =
BORDER-LEFT: #bbbbbb 0.5pt solid; BORDER-BOTTOM: #bbbbbb 0.5pt solid"=20
vAlign=3Dtop align=3Dleft width=3D"19%" bgColor=3D#e8e8e8 =
rowSpan=3D2>=A1=BE11=C2=A5=A1=BF <FONT=20
color=3D#000000>zhangsai =
=D5=C5=C8=FC</FONT><BR>=BB=FD=B7=D6=A3=BA<FONT=20
color=3D#000000>124</FONT><BR>=C5=C9=B1=F0=A3=BA<FONT =
color=3D#000000></FONT><BR>=B5=C8=BC=B6=A3=BA<FONT=20
color=3D#000000>------</FONT><BR>=C0=B4=D7=D4=A3=BA<FONT =
color=3D#000000>=BA=D3=B1=B1 =B1=A3=B6=A8</FONT><BR></TD>
<TD class=3Df03=20
style=3D"BORDER-RIGHT: #bbbbbb 0.5pt solid; BORDER-TOP: medium none; =
BORDER-LEFT: medium none; BORDER-BOTTOM: medium none"=20
vAlign=3Dtop width=3D"81%" bgColor=3D#e8e8e8><FONT=20
=
color=3D#000000>signed long cs5460a_read_3byte(uchar read_=
comm_byte)=20
<BR>{ =
<BR> uchar i,j;=20
=
<BR> uchar input_data=
[4]=3D{0xfe,0xfe,0xfe,0xfe};=20
<BR> union UL_temp return_data;=20
<BR> return_data.L_tmp=3D0;=20
<BR> DDRA&=3D~(_BV(CS5460A_SDO));=20
<BR> PORTA|=3D_BV(CS5460A_SDO);=20
=
<BR> cs5460a_init();=20
=
<BR> &nb=
sp; &nbs=
p;asm("nop");=20
=
<BR> &nb=
sp; asm("nop");=20
=
<BR> &nb=
sp; asm("nop");=20
=
<BR> &nb=
sp; asm("nop");=20
<BR> EN_CS5460A_CS; =
=
<BR> cs5460a_write_byte(re=
ad_comm_byte);=20
=
<BR> for (i=3D3;i>=
0;i--)=20
<BR> {=20
=
<BR> &nb=
sp; for(j=3D0;j<8;j++)=20
=
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