Commit Graph

9 Commits

Author SHA1 Message Date
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
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
ec1677ca6c Added a function (quick hack) that sets the radio transmission power of outgoing announcement packets in xmac 2009-03-23 21:06:26 +00:00
adamdunkels
1cb3bad088 Multiple bugfixes and updates to xmac code by Niclas 2007-11-12 22:29:37 +00:00
adamdunkels
f638c628d7 Made initialization function return a pointer to the MAC driver structure, to make initialization nicer 2007-10-23 20:57:37 +00:00
adamdunkels
52eb372890 Modified to use the new MAC layer API 2007-05-25 08:06:44 +00:00
adamdunkels
edd509acf5 Added nicer configuration options. Added hack for optimizing X-MAC for unicast packets. Added statistics gathering. Turn radio off when someone else is receiving a packet. Queueing packets when X-MAC cannot send immediately (since someone else is transmitting). 2007-05-22 20:55:24 +00:00
adamdunkels
18825e05b6 Strobes for unicast packets are now acked immediately. Sleep cycle is now configurable. Many bugfixes 2007-05-15 08:07:07 +00:00
adamdunkels
d335cb8087 Power saving MAC protocol based on X-MAC [SenSys 2006] 2007-04-07 05:43:31 +00:00