Hello everyone, Can anyone please tell the difference between h/w and s/w ack? There are discussions here<http://mail.millennium.berkeley.edu/pipermail/tinyos-help/2008-February/031061.html>and here<https://www.millennium.berkeley.edu/pipermail/tinyos-help/2008-July/034897.html>, but neither gives clear explanation. More specifically, TEP 126 says: 1) "This led to some issues, such as false acknowledgements where the radio chip would receive a packet and acknowledge its reception and the microcontroller would never actually receive the packet."
When will this happen? 2) "The current CC2420 stack uses software acknowledgements, which have a higher drop percentage. When used with the UniqueSend and UniqueReceive interfaces, dropped acknowledgements are more desirable than false acknowledgements. Received packets are always acknowledged before being filtered as a duplicate." How is drop percentage defined here? And why dropped acks are preferential over false acks? Your explanation will be sincerely appreciated. -- -Xiaohui Liu
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