AW: [En-Nut-Discussion] Problem with Port E Pin 5 and Ethernet

[Robert Hildebrand]

  -----Ursprüngliche Nachricht-----
  Von: Tom Nyström [mailto:en-nut-discussion-admin at egnite.de]Im Auftrag von
Tom Nyström
  Gesendet: Dienstag, 15. April 2003 16:06
  An: en-nut-discussion at egnite.de
  Betreff: SV: [En-Nut-Discussion] Problem with Port E Pin 5 and Ethernet


  Hi! Thanks for your answer.

  But when we use Timer 3 for generating PWM on Port E Pin 5 it is set to
Out,
  and it works. It is only when the timer is not used that the problem
occurs.
  What happens to the Ethernet interrupt when PE5 of the processor sends out
a PWM?

  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.

   And why choose a timer output pin as Ethernet interrupt? It apparently
  forces you to use the pin for Output C of Timer 3 or not at all.

  /Tom

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