In SX Microcontrollers, SX/B Compiler and SX-Key Tool, peterverkaik wrote:

I used $18 for the master and start with $20 for the slaves, as these low addresses
are not used by popular i2c devices.

Another way to use dynamic addressing, without using a tokenbus, is to make use
of a broadcast address that all slaves listen to. Via this broadcast address all
slaves receive a private I2C address. All non-assigned slaves then pull SCL low [b]for a random time[/b].
The slave that holds SCL low for the longest time, then accepts the private address
and does not pull SCL low on the next broadcast.

regards peter

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