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Unread 15-02-2006, 17:08
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Matt Krass Matt Krass is offline
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FRC #0263 (Sachem Aftershock)
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Re: RC randomly resets or goes into program mode

Quote:
Originally Posted by Tom Bottiglieri
As the topic says, our RC randomly resets or goes into program mode. I was able to isolate the problem to a group of printf()'s executing every program loop, but it seems to be happening again even with those gone.

We are running Timer 2 to run the ADC (only channel is a 50Hz sampling gyro), Timer 3 for an ultrasonic range finder, and 3 hardware interrupts (2 128ppr encoders and the range finder)

Any ideas? It may be our code is taking too long to execute, but I was under the impression the master processor would totally shut down the system if this happened. And even if that happened, what would cause program mode to trigger?
Check for dust particles near the RESET/PROG contacts.

Also, try reflashing the Master Code, something may have gotten corrupted. Were you operating in a very low power condition? Sometimes that can make memory in Atmel AVRs corrupt, PICs may have the same affliction. I'd say a Master Code redownload, followed by (not before!) a user code redownload will most likely fix your problem, but I'm not an IFI techy.
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Matt Krass
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I'm a FIRST relic of sorts, I remember when we used PBASIC and we got CH Flightsticks in the KoP. In my day we didn't have motorized carts, we pushed our robots uphill, both ways! (Houston 2003!)