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sylvandb / gruvin9x

Automatically exported from code.google.com/p/gruvin9x
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WDT problem in ATmega2561/0 versions #28

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?
1.Turn unit on. Watch the display.

There seems to be a problem on the AT'2561/0 system where the watchdog timer 
triggers once after power-on. The splash screen appears (and can be clearer by 
pressing a button) and then a reset occurs and the splash screen re-appears.

If the splash screen is disabled, the reset still occurs.

That this happen only once is very odd, since the WDT should be re-initialised 
at each reset.

Further more -- when a WDT reset occurs, there should be no splash screen at 
all - regardless of the setting. The system should get back into full operation 
ASAP. The longer it takes, the longer a model could be flying with zero 
control. NOT good.

Original issue reported on code.google.com by gru...@gmail.com on 2 Jul 2011 at 1:01

GoogleCodeExporter commented 8 years ago 
This turned out to be my Atmel AVRISP MkII programmer doing a reset half a 
second after it detects the presence of the 9X. It does not happen at all when 
the programmer is not connected. Shiucks.

Original comment by gru...@gmail.com on 2 Jul 2011 at 1:33