W1: Addressing


Each device features a 64-bit unique identifier
LSB: class code (device type)
48 bits of serial number
MSB: crc8

Most communication is addressed to a specific device
After reset, you can send the "match rom" command
Then, any command is for the specific device

Broadcast is supported too
After reset, you send the "skip rom" command
Subsequent commands will be accepted by all devices

When you connect more than one device, bandwidth suffers
Addressing one device takes almost 10ms
480us for reset, plus ack etc
120us * 72 for the address
And then you can communicate