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Topic: Dealing with standby (Read 353 times) previous topic - next topic

breadman

I want an Uno to keep running no matter what a Mac does, and occasionally connect to it.

I've read that this causes a reset, which can be prevented by removing something that I couldn't find a picture of.

But what about the computer going to sleep? There should still be power, so will the sketch continue?

PaulS

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I want an Uno to keep running no matter what a Mac does, and occasionally connect to it.

I've read that this causes a reset, which can be prevented by removing something that I couldn't find a picture of.

http://arduino.cc/playground/Main/DisablingAutoResetOnSerialConnection

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But what about the computer going to sleep? There should still be power, so will the sketch continue?

Time to do some testing, I think. Load the blink sketch, and see what happens when the Mac snoozes.

breadman

Thanks! The capacitor does prevent reset and the LED kept blinking on a sleeping computer.

I looked at the code for the 16U2 (it's rather short so I probably missed some files) but couldn't find any handling of USB power events.

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