i2c question for using the same address for 2 io expanders to do the same thing

Projects General Guidance
2

yoodles:
hi all

wondering if its ok to set 2 i2c IC's (same type) to the same address if they need to preform the same function.

idea being (this is for a multi room audio switcher) that the same status updates can be displayed in a remote area as well as on the front panel without having to write a 2nd round of code just for the front panel.
if this is possible for outputs (leds etc) would it also be possible to have the function inputs (buttons) also or would this error out as it will be receiving the same info from 2 sources ?

Thanks
Jesse

Each 'device' attached to a I2C bus must have it's own unique address, so what you asking to do is not possible and could only lead to problems. However many I2C device ICs have the ability to respond to different address by hardwiring a pin to positive voltage or to ground to modify it's default address. So if you could identify the specific IC(s) you are considering we could check if they can be set up for alternate I2C addresses.

Lefty