adamdunkels
2c3d3e3d73
Bugfix: handle deferred transmissions correctly (don't count them)
2010-03-09 13:20:08 +00:00
adamdunkels
79722b4247
Rework of the timing conditions of ContikiMAC: the old timing did not work well on real hardware, the new one seems to work better
2010-03-09 13:19:05 +00:00
adamdunkels
cc7d3ae142
Reset CCA mode to default. Make sure that the radio gto switched on when reading RSSI; otherwise node will reboot because of watchdog
2010-03-09 13:18:16 +00:00
nvt-se
96eb20d235
forward arguments even if REXMIT is not set
2010-03-04 14:17:43 +00:00
dak664
c65e09ceb2
Remove compiler warnings
2010-03-02 15:41:23 +00:00
nifi
5e43a6998b
Replaced old framer (framer_get/framer_set) with new NETSTACK style configuration. Added nullrdc-framer that is a nullrdc with framer support.
2010-03-01 13:30:21 +00:00
nifi
0c084b8c68
added random init of sequence number
2010-03-01 13:17:01 +00:00
adamdunkels
524625dfd2
Removed debug string names of packet attribtues
2010-02-28 20:20:19 +00:00
adamdunkels
410d860a93
Improved handling of neighbor phase estimation: instead of busy-waiting while waiting for neighbor's phase, the new code schedules a timer just before neighbor wakes up
2010-02-28 20:19:47 +00:00
adamdunkels
e6fceb7200
Added MAC-layer return value to indicate that a packet transmission was deferred
2010-02-28 20:18:30 +00:00
adamdunkels
ec928a2a19
Make max queueing time depend on retransmission timeout
2010-02-28 14:15:58 +00:00
adamdunkels
e06acc4525
Prod the watchdog if waiting for along time
2010-02-28 14:15:16 +00:00
adamdunkels
74da90a06b
Don't count collisions as transmissions
2010-02-28 10:07:17 +00:00
adamdunkels
f95a6cce85
Added function for obtaining packet queue length
2010-02-28 09:20:32 +00:00
adamdunkels
8fe15f7b45
New packet attribute for specifiying MAC layer retransmissions; reorder and commented packet attributes
2010-02-28 09:19:43 +00:00
adamdunkels
970a9eb9c7
Increased neighbor lifetime to allow for longer neighbor announcement intervals
2010-02-28 09:19:04 +00:00
adamdunkels
7165a3866f
Significant rework of the Contiki data collection protocol:
...
* the new version makes use of MAC-layer feedback so that bad paths
can be identified quicker and then avoided.
* the new code uses transport layer ACKs that contain feedback from
the collect protocol: when a packet cannot be forwarded due to lack
of resources, the ACK contains a flag that indicates that the packet
could not be forwarded. ACKs also contain the routing metric of the
sender, which improves agility in face of rapid path changes.
* loop detection and management has been improved: with higher path
metric agility, the system is more prone to short-lived routing
loops. Instead of dropping looping packets, the new version adjusts
the routing metric for the routes that exhibit loops so that the
risk for future loops is reduced.
* make use of packet attributes to inform the MAC layer of how many
times packets should be retransmitted.
2010-02-28 09:18:01 +00:00
adamdunkels
b6b4941871
Made the number of MAC-layer retransmissions configurable on a per-packet basis, via a packet attribute
2010-02-28 08:35:16 +00:00
adamdunkels
ed88f487c8
Improved detection of link-layer ACKs; increased the time ContikiMAC waits when it has detected a link-layer ACK; increased the number of silence periods required to detect a CCA false positive
2010-02-28 08:33:21 +00:00
adamdunkels
fa1a96636e
Bugfix: the compile-time check for UIP_LLADDR_LEN previously generated a run-time error, when it should have generated a compile-time error
2010-02-28 08:30:39 +00:00
adamdunkels
ba0e50a7b7
Set the default number of MAC layer retransmissions for IPv6 packets to 2
2010-02-28 08:29:42 +00:00
adamdunkels
b9827d2b36
Bugfix: didn't correctly reset the pending flag when a packet was read from the radio
2010-02-25 16:06:44 +00:00
joxe
0ab2bc9a31
upgraded sicslowpan to hc-06 - no 48 bit multicast compression support yet
2010-02-25 15:50:58 +00:00
nifi
b50d47fb80
added missing function in sicslowmac_driver
2010-02-23 22:45:11 +00:00
nifi
1cfcc8a73a
Removed the combined name of CSMA and NETSTACK_RDC. The name of NETSTACK_RDC can be accessed separately if needed.
2010-02-23 20:42:45 +00:00
nifi
c20047f657
Changed the network stack to use different structures for the different layers (network_driver, mac_driver, rdc_driver, radio_driver). This helps to avoid incorrect configuration.
2010-02-23 20:09:11 +00:00
adamdunkels
bb62749de7
Made debug printfs optional
2010-02-23 18:49:58 +00:00
adamdunkels
0ab2ba433f
Bugfix: the wrong callback pointer was passed to higher layers.
2010-02-23 18:49:45 +00:00
adamdunkels
ed52586e18
Rework of parts of the ContikiMAC code based on input from experimental results. When channel check is triggered because of a false positive, the new version checks the radio several times to make sure that there really is an incoming packet. Otherwise, the radio is switched off. Cleaned up and removed old unused code. Added a few temporary debugging mechanisms and functions.
2010-02-23 18:49:05 +00:00
adamdunkels
50e1452564
Ugly workaround for internal error in mspgcc when applying the >= operator to two 32-bit values
2010-02-23 18:40:08 +00:00
adamdunkels
0c4c88ae66
Improved per-packet power profiling: if a packet is retransmitted, the new energy is added to the old energy so that it is possible to measure the full energy for all transmissions of the packet
2010-02-23 18:39:00 +00:00
adamdunkels
ca0417a923
Added the MAC layer callback functionality so that the Rime network layer gets information from the MAC about the status of sent packets: were they successfully transmitted, or was there a collisions? How many retries were there?
2010-02-23 18:38:05 +00:00
adamdunkels
f10eedab3e
Added debug printout
2010-02-23 18:37:15 +00:00
adamdunkels
2d13fecea7
Improved backoff management: timer is now doubled on every transmission, until the using module calls the neighbor_discovery_start() function again. Don't cancel the transmission even if a lower value arrives (this fixes a problem with multi-hop ETX propagaion).
2010-02-23 18:36:50 +00:00
adamdunkels
0eade2886c
Better loop handling: when a loop is detected, the neighbor to which the packet was originally sent gets an inflated ETX; made sure that collect without announcments work; increased timeouts, to work nicer in larger networks
2010-02-23 18:35:23 +00:00
adamdunkels
a4d9d6651b
Added the option to specify the old value to observers so that they can determine if the announcement should be sent out quicklier than otherwise
2010-02-23 18:32:44 +00:00
adamdunkels
b746b7fc06
Reworked the Rime/Chameleon interface so that packets now always hit Rime before Chameleon. Chameleon is now only called by Rime. This makes packet sniffing easier, and allows for sniffing packets after their header has been processed by Chameleon, thereby making per-packet power profiling much easier to implement
2010-02-23 18:29:53 +00:00
adamdunkels
d8cce42d28
Set the default radio driver to nullradio
2010-02-23 18:28:04 +00:00
adamdunkels
47578806b5
Removed semicolon from #define to allow the semicolon to be placed naturally after the macro is used
2010-02-23 18:27:04 +00:00
adamdunkels
4b04fdd328
Minor style fix
2010-02-23 18:26:26 +00:00
adamdunkels
1ee32c3074
Removed non-functional time synchronization code; added some experimental code for CCA checks (enabled CCA mode 1, a temporary development function for setting the CCA threshold); enable the possibility to switch off radio even if a packet is currently arriving
2010-02-23 18:24:49 +00:00
adamdunkels
5292005962
A null radio driver that does not do anything - useful in the native port and as a template for new radio drivers
2010-02-23 18:18:53 +00:00
adamdunkels
0b2b7bcdba
Removed inadvertedly left-over include file
2010-02-18 23:52:34 +00:00
adamdunkels
5cf3b83733
Common initialization code for the netstack
2010-02-18 23:15:26 +00:00
adamdunkels
a2664054c5
Always include netstack.h
2010-02-18 23:09:30 +00:00
adamdunkels
f49ebfe1c4
Temporarily disabled rime route udp because it breaks with newest MAC interfaces
2010-02-18 21:53:08 +00:00
adamdunkels
e34eb54960
A work-in-progress rework of the Contiki MAC and radio layers. The
...
main ideas are:
* Separates the Contiki low-layer network stack into four layers:
network (e.g. sicslowpan / rime), Medium Access Control MAC
(e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
that specify what mechanism/protocol/driver to use at the four
layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
the fate of a transmitted packet: if the packet was not possible to
transmit, the cause of the failure is reported, and if the packets
was successfully transmitted, the number of tries before it was
finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
efficient radio duty cycling protocols: channel check, pending
packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
#defines.
2010-02-18 21:48:39 +00:00
adamdunkels
f8c804e28b
ntikiMAC: a new radio duty cycling mechanism that uses a combination
...
of link-layer and MAC-layer mechanisms to achieve a very low power
consumption: during idle listening the radio is switched off between
99.2% and 99.6% of the time. One unicast transmission typically adds
between 0.07% and 1.2% additional radio time, depending on packet
size.
ContikiMAC uses the standard IEEE 802.15.4 message format and adds no
additional headers.
ContikiMAC is simple: it uses periodic two-shot channel sampling
during idle listening to keep the radio on-time down. Transmissions
are done with repeated transmissions until a link-layer ACK is
received.
2010-02-18 21:26:15 +00:00
adamdunkels
f5c48751b5
Reworked 802.15.4 header creation and parsing so that it works regardless of the size of the rimeaddr_t typedef
2010-02-18 21:00:28 +00:00
adamdunkels
2fbf21b2b3
Refactored the phase optimization functionality into a separate module
2010-02-18 20:58:59 +00:00
