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Unread 14-02-2006, 12:28
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Chris_Elston Chris_Elston is offline
Controls Engineer
AKA: chakorules
FRC #1501 (Team THRUST)
Team Role: Engineer
 
Join Date: Feb 2004
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Location: Huntington, Indiana
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Interrupt Maximum before the RED light DEATH?

I've been hunting around for a maximum of interrrupt 1-6 on the 2006 controller and 2005 if they are different. Best I've found is Kevin's documents that say "thousand of clicks per second" on a 40 MHZ PIC chip.

Is there a spec somewhere? Or does that really depend on how much code you have?

We are using the gear teeth sensors which say they have a maximum of 6KHZ of bandwidth, but wanted to make sure we wouldn't kill our CPU if we try and spin the gears up pretty fast. I think we are running around 1176 pulses per second, and the interrupt seems to be behaving. It would be nice to know what are "true" max is before we bury the CPU.




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