Hi,
I'm porting TinyOS to a new CPU architecture and I'm currently working
on the radio stack for the radio integrated in my SoC.
I took the RF230 from mainline TinyOS repository and the ATMega128
RFA1 from http://sourceforge.net/projects/szte-wsn/ as references.
These two implementations support a full-featured radio stack based on
rfxlink with, for example, packet timestamping, software/hardware
acks, collision avoidance, ...
For my first tests with my radio driver implementation I would like to
have the simplest/minimal possible configuration to just test send and
receive paths. I saw that many components are optional and can be
replaced by DummyLayerC component instances.
For my first test I will simply use point-to-point transmissions
between 2 nodes and won't need any "advanced" features. What is the
minimal/simplest configuration/wiring for this scenario ?
For now I could identify following setup for the send datapath:
(receive datapath is very similar)
ActiveMessageLayerC
|
AutoResourceAcquireLayerC (optional: can be replaced by a DummyLayer
if Ieee154MessageLayerC is not used)
|
TinyosNetworkLayerC
|
UniqueLayerC
|
PacketLinkLayerC (optional: can be replaced by a DummyLayer if
reliable packet link is not used)
|
LowPowerListeningLayerC (optional: can be replaced by a
LowPowerListeningDummyC if we don't want to support LPL)
|
MessageBufferLayerC (mandatory)
|
CollisionAvoidanceLayerC (random or slotted. Is this a mandatory
component or can it be also replaced ???)
|
SoftwareAckLayerC
|
CsmaLayerC (can be bypassed with a DummyLayerC)
|
TrafficMonitorLayerC (can be bypassed with a DummyLayerC if no traffic
monitoring is necessary/wished)
|
RadioXXXDriverLayerC
May I replace SoftwareAckLayerC and CollisionAvoidanceLayerC with
dummy implementations for the first tests ? It's clear that these
components are important in the stack but I would like to start with
the "dumbest" possible configuration and introduce new layers one by
one later.
Any hint is welcome :-)
Kind regards,
Romain
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