1.4 Putting It All Together

All 1-Wire devices follow a basic communication sequence:
  1. The host sends the ‘Reset’ pulse.
  2. The target/targets responds/respond with a ‘Presence’ pulse.
  3. The host sends a ROM command; this effectively addresses one or several target devices.
  4. The host sends a memory function command.
Note: It is not necessary to complete the entire sequence. For example, it is possible to send a new ‘Reset’ after finishing a ROM command to start a new communication.