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Old June 25th, 2013   #2
Task Group Member
Join Date: Aug 2008
Posts: 369

I've never really liked the block address PID. I feel that any kind of block addressing should be handled as a for() loop in the controller rather than in the responder.

The DEVICE_INFO PID is required for root devices.

On sub-devices, there's nothing in the text that requires DEVICE_INFO, but my conclusion is that practically speaking you have to implement it for sub-devices. Otherwise there's no way to find out how many sensors a sub-device has.
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