I'm trying to use the MCP23017 I2C port extender which has 3 addressing pins to be externally biased to set the I2C device address.
How should I connect the 3 addressing pins to select the I2C address that I want? I was not able to identify a table mapping the biasing to the I2C address in its datasheet.
Also, should I be biasing by connecting some address pins to GND, some to 5V of my Raspberry? Diagram below show show I am currently wiring up three MCP23017 to a single Raspberry 3. Does the wiring look ok?