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<DIV>@timur</DIV>
<DIV> </DIV>
<DIV>hi,</DIV>
<DIV> </DIV>
<DIV>Audio card (wm8776) cannot work in full duplex, CPU is FSL
P1022.</DIV>
<DIV>The PCB design about audio card reference FSL P1022 development board, and
palying or recording is OK separately.</DIV>
<DIV> </DIV>
<DIV>My question is whether P1022 audio driver cannot support full duplex?</DIV>
<DIV> </DIV>
<DIV>The following is my test method.</DIV>
<DIV>test script:</DIV>
<DIV>
<P class=MsoNormal><I><SPAN
style="FONT-FAMILY: 'Verdana','sans-serif'; COLOR: black; FONT-SIZE: 10pt">#!/bin/sh</SPAN></I></P>
<P class=MsoNormal><I><SPAN
style="FONT-FAMILY: 'Verdana','sans-serif'; COLOR: black; FONT-SIZE: 10pt"><SPAN
style="FONT-FAMILY: 'Verdana','sans-serif'; COLOR: black; FONT-SIZE: 10pt">echo
"start plarying" </SPAN> <BR>aplay /nor-disk/audiosrv/Success.wav
& <BR>sleep 1</SPAN></I></P>
<P class=MsoNormal><I><SPAN
style="FONT-FAMILY: 'Verdana','sans-serif'; COLOR: black; FONT-SIZE: 10pt">echo
"start recording" <BR>arecord -d 5 -t wav -D "plug:SLAVE='hw:0,1'" -r 19886
test.wav</SPAN></I><SPAN
style="FONT-FAMILY: 'Verdana','sans-serif'; COLOR: black; FONT-SIZE: 10pt"><?xml:namespace
prefix = o ns = "urn:schemas-microsoft-com:office:office"
/><o:p></o:p></SPAN></P></DIV>
<DIV> </DIV>
<DIV>when start "record", "aplay" just suspend, and I cannot listen voice. when
record is over, I found aplay still suspend.</DIV>
<DIV>according to "ps -aux":</DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Verdana','sans-serif'; COLOR: black; FONT-SIZE: 10pt">root
1499 0.2 0.1 4012 1500 pts/0 <B>S</B> 08:25 0:00 <B>aplay
/nor-disk/audiosrv/Success.wav</B><o:p></o:p></SPAN></P></DIV>
<DIV> </DIV>
<DIV>But, I run this script in a PC linux, I can listen the voice, the
audio card can record my voice simultaneous.</DIV>
<DIV> </DIV>
<DIV>Looking forward your response!</DIV>
<DIV> </DIV>
<DIV>Thanks! </DIV>
<DIV> </DIV>
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<DIV><SPAN>
<DIV><SPAN
style="FONT-FAMILY: ËÎÌå; COLOR: #000000; FONT-SIZE: 10.5pt">B.R.</SPAN></DIV>
<DIV><SPAN
style="FONT-FAMILY: ËÎÌå; COLOR: #000000; FONT-SIZE: 10.5pt">YXS</SPAN></DIV></SPAN></DIV></BODY></HTML>