Question about I2C Pins on Daughter Board
I have the standard expansion dock for the Omega 2: https://docs.onion.io/omega2-docs/expansion-dock.html
I am trying to build a mos-fet bi-directional logic level shifter as seen on page 10 of this document: https://cdn-shop.adafruit.com/datasheets/an97055.pdf
My question is about the 3.3v side of the schematic. I have been unable to find any documentation on whether the Omega2 or the Expansion Dock includes pull up resisters for the I2C lines.
Do I need to add these resisters, are they already built into the Omega2/Expansion Dock, or is there some other reason I don't need them? All of the documentation I've read on using I2C with the Omega2 has suggested that the I2C lines should be plug'n'play, but I don't want to risk my Omega2 on an assumption.
I'm trying to use the Omega2 as a jumping off point for better understanding how to get chips to communicate and do things, so any information on how this works (besides standard I2C communication standards) and how the Omega2 differs from the norm would be greatly appreciated.
@ziger-zigs Each I2C line (SDA, SCL) of Omega2(+) has a 4.7 kOhm pull up resistor - there are on the PCB under the shielding.