Quote:
Originally Posted by Mike Betts
Joe and Terry,
If you have not done so already, please get this info to IFI as soon as possible.
Regards,
Mike
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I did speak with Tom Watson yesterday. He said I was the first to report it since the new linker script and library files were released. Hopefully Terry has talked to them by now as well.
I did more testing today. I was able to reproduce it with all 2007 components.
We're using a modified version of Kevin's ADC code at 3200hz. We're using his camera code, but without a camera physically installed. The problem will occur consistently if we're using printf to print 20 or so characters per slow loop. I didn't see it when we were not outputting any data.
Last week, I verified that that we could output 40 characters without causing us to slow down the slow loop. However, something may have changed since then, so I need to reverify this.
I suspect that something in our modified ADC code is stomping on something it shouldn't, and that it isn't a widespread issue.
I do have a test setup that I can reproduce the issue on, so I will continue trying to isolate the problem, and hopefully it is just our code.
I still wonder in the back of my mind whether protecting gpr15 doesn't fix the root cause, but only the most common symptom.