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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Ursprüngliche Nachricht-----<BR><B>Von:</B> Tom Nyström
[mailto:en-nut-discussion-admin@egnite.de]<B>Im Auftrag von </B>Tom
Nyström<BR><B>Gesendet:</B> Dienstag, 15. April 2003 16:06<BR><B>An:</B>
en-nut-discussion@egnite.de<BR><B>Betreff:</B> SV: [En-Nut-Discussion] Problem
with Port E Pin 5 and Ethernet<BR><BR></FONT></DIV>
<DIV><FONT size=2>Hi! Thanks for your answer.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>But when we use Timer 3 for generating PWM on Port E Pin 5
it is set to Out,</FONT></DIV>
<DIV><FONT size=2>and it works. It is only when the timer is not used that the
problem occurs.<SPAN class=093161614-15042003><FONT face=Arial
color=#0000ff> </FONT></SPAN></FONT></DIV>
<DIV><FONT size=2>What happens to the Ethernet interrupt when PE5 of the
processor sends out a PWM?</FONT></DIV>
<DIV><SPAN class=093161614-15042003><FONT size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=093161614-15042003><FONT size=2>generating PWM can also
generate input-interrupts (see datasheet of mega128, section "external
interrupts"), maybe the driver handles the additional interrupts, but it would
be a very performance-consuming situation.</FONT></SPAN></DIV>
<DIV><FONT size=2><SPAN class=093161614-15042003><FONT face=Arial
color=#0000ff> </FONT></SPAN></FONT></DIV>
<DIV><FONT size=2><SPAN class=093161614-15042003> </SPAN>And why choose a
timer output pin as Ethernet interrupt? It apparently</FONT></DIV>
<DIV><FONT size=2>forces you to use the pin for Output C of Timer 3 or not at
all.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2>/Tom</FONT> </DIV>
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