Commit Graph

10 Commits

Author SHA1 Message Date
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
06d17c7e1c Remove unused rtimer code 2010-02-03 16:44:43 +00:00
adamdunkels
d68af249ec Added a MAC layer return value that informs the caller that a packet did not receive a MAC layer acknowledgement 2010-02-03 01:17:32 +00:00
adamdunkels
181213124b Added a configuration option for setting the MAC channel check rate (which must be a power of two). The configuration is independent of the MAC protocol. 2010-02-02 23:28:58 +00:00
adamdunkels
cc2be0f111 Remove compiler warnings 2010-02-02 16:33:07 +00:00
adamdunkels
1a13d25d33 Revised version of the X-MAC implementation that uses a ctimer instead
of an rtimer for the periodic radio duty cycling. The benefit of this
implementation is that it leaves an rtimer free for user tasks. The
drawback is a slightly higher idle power consumption. This new version
is based on the current rtimer-based X-MAC.
2010-01-31 18:44:23 +00:00
nifi
912aba7280 added init function in MAC driver for easier configuration 2009-06-22 11:14:11 +00:00
adamdunkels
65eb5fd4e8 Renamed the rimebuf module to packetbuf to signal that the module is used outside of a pure Rime context (e.g., the sicslowpan code uses it). 2009-03-12 21:58:20 +00:00
adamdunkels
974870359a Changed all occurences of u8_t and u16_t to uint8_t and uint16_t 2008-02-24 22:10:30 +00:00
fros4943
25d2514541 xmac ctimer implementation 2007-09-18 10:35:39 +00:00