Author Topic: AVR pin states  (Read 1223 times)

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Offline Razor ConceptsTopic starter

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AVR pin states
« on: December 24, 2009, 04:37:17 PM »
Say a pin is currently an output pin and high. If I change it to input, will it have the pull up resistor enabled or not?

If a pin is input, and I change it to output, will it be high or low? Does it depend on if the pull up is enabled?

Offline airman00

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Re: AVR pin states
« Reply #1 on: December 24, 2009, 06:45:54 PM »
When AVR is in input its in high impedance mode. You can enable the internal pullups on pins by setting the pullup registers .
Changing it to output with pullups enabled who bring it high, changing it without anything would put it in floating.
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