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You can do pretty much anything out there when I2C and/or SPI are involved. One interesting thing I had to do as part of a test system was talk to some smart batteries through the SMBus (which is a specialized form of I2C). Almost all rechargeable battery packs (like in your laptop) use it. You can get information like how much charge is left, how long the charge will last, output current, output voltage, etc.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions Unofficial Forum Rules and Guidelines "Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God" - 2 Corinthians 3:5