Logic levels

[jml]

What are the voltage ranges for "low" "undefined" and "high" for the input pins on the DuetWifi?

[dc42]

From the atsam4e datasheet:

0 to 0.99V will register as low
2.31V to 3.3V will register as high
Between 1.0V and 2.30V it could register as either

[jml]

Ah thanks, I looked in the datasheet and couldn't find it for a long time. After you tell me, now I can see it in there Thanks!