Hi David, I have a question about a parameter used in CC2420 LPL module.
* DELAY_AFTER_RECEIVE=100ms defined in DefaultLpl.h This value is used to stretch the radio's ON time after receiving or sending a packet, and also detecting some CCAs at check time. I think that the cca detection related delay time should be seperated with the first two cases (after sending/receiving). If CCA detection is a false positive meaning that no packet is being transmitted to node, keeping radio ON during 100ms is too wasteful when we use a short check interval such as 100ms. Even though we use a shorter delay time such as 50ms, according to my experiment, there is no problem because radio is supposed to receive a packet after detecting CCAs, otherwise the radio should be OFF right after waiting an expected time for packet reception. I do not feel 100ms should be sticked for this case, a shorter delay would be fine if it is enough to guarrantee the packet reception at valid CCA detection. Am I missing something? Thanks, -- Jongkeun
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