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Lpc2000

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Message

Using multiple capture pins

2004-05-06 by bobbruce000

On the LPC2114, multiple pins can be assigned to a single
capture port.  For instance, capture channel 0 of timer0
can be triggered by P0.2, P0.22 or P0.30.

According to the manual, these triggers should work in
parallel, so a capture interrupt will be triggered from
any of them.  But I can't get that to work.  I only
get interrupts from the lowest enabled trigger.  So
if I enable P0.30 as a capture trigger it works fine.
But when I enable P0.2, then I no longer get interrupts
when there is a trigger on P0.30.

Has anyone else seen similar behavior?

    -bob

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