Hi,
I'm working with telosb motes and tinyos 2.1.2 and I'm trying to use
software acknowledgements.
I have removed any of these from the makefiles
PFLAGS += -DCC2420_HW_ACKNOWLEDGEMENTS
And I confirmed that
hwAutoAckDefault = false
in tos/chips/cc2420/control/CC2420ControlP.nc
The software ack generation gets triggered in
tos/chips/cc2420/receive/CC2420ReceiveP.nc
Code is here:
https://github.com/tinyos/tinyos-main/blob/master/tos/chips/cc2420/receive/CC2420ReceiveP.nc#L596
But I don't see a check for FCS/CRC before generating the
acknowledgement. Wouldn't this cause packets to be acknowledged
falsely?
Does anyone know if this sequence is correct? Am I missing something?
I would expect that the receiver should check if the CRC is correct
before triggering the SACK.strobe() , but that doesn't seem to be the
case.
-Srikanth
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