06-03-2006, 16:24
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Electrical Engineer / Computer Geek
AKA: Eldarion Telcontar
no team (Teamless Orphan)
Team Role: Alumni
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Join Date: Nov 2005
Rookie Year: 2005
Location: Númenor
Posts: 558
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Re: The 8.2 (or 8.3) Battery Voltage Bug
Quote:
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Originally Posted by yoyodyne
Kevin, we are using v2.40 17 November 2004. I didn't think we were allowed to use any newer versions. Saturday morning I was showing Dave Lavery the problem at the VCU regional and he went over and talked to the "IFI guy" who said that it was not possible for the user processor code to corrupt the battery voltage reading or the RC to OI comms. And that makes sense to me unless memory is shared between the processors or the MP passes the rxdata structure transparently or something like that. Is there any documentation on the interaction between the user processor and the master processor? The only thing I know is the tx and rxdata structures and the format of the dashboard data which provides clues as to what the OTA format between them is. Our one and only 2006 controller is locked in a crate awaiting the Atlanta regional so I can't do any testing but I do have code that parses through the dashboard output and generates an output file I can suck into excel for analysis. I would be interested in what actually comes out of the dashboard port when this is happening to see if data is skewed by a byte or two. I know when we have this problem, control input that should effect PWM5 turns actually gets coupled to PWM1 or 2 (they used to drive the same motor pair) I can give more details if anyone is interested.
Greg
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That makes sense, however why didn't we see this last year if the only change was the user processor? 
Has anyone tried a master update in case some of the RCs have a corrupted master firmware?
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