1.4 Putting it All Together

All 1-Wire devices follow a basic communication sequence:
  1. The master sends the “Reset” pulse.
  2. The slave(s) respond with a ”Presence” pulse.
  3. The master sends a ROM command. This effectively addresses one or several slave devices.
  4. The master sends a Memory command.
Note: To reach each step, the last step has to be completed. It is, however, not necessary to complete the whole sequence. E.g., it is possible to send a new “Reset” after finishing a ROM command to start a new communication.