Slave support
- Most 1-wire devices are true physical chips made by Dallas/Maxim. They have unique IDs and an associated family code.
- Based on the family code, the slave's properties are exposed.
- All slaves have standard properties (name, id, present)
- Special properties (like temperature or memory contents) are family-specific.
- Properties may be read and/or written.
- Properties can be one of several types
- binary data (memory)
- integer
- unsigned integer (positive)
- yes/no
- date
- floating point
- Properties can be singletons or arrays
- The DS1821 Thermostat has no family code or unique ID.
- It's presence if not checked when addressed.
- Only 1 per bus
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