I need to connect two Si114x light sensors to one I2C bus. I don't have them physically yet. Every sensor has the same I2C address, so connecting them with the default settings would mean a conflict. However, the datasheet (http://www.silabs.com/Support%20Documents/TechnicalDocs/Si114x.pdf) mentions a
BUSADDR command which modifies the address, and the default value of the modified register is
0x5A which is given as a slave address, that's a bit weird).
My question is: does the sensor keep the address in a non-volatile memory? The datasheet doesn't say it explicitly. Can I just connect one sensor first as the only sensor to the bus, reprogram its address and then add the second sensor? Is it some kind of pattern in I2C devices? If not, the address modification command wouldn't make sense to me.