Commit graph

64 commits

Author SHA1 Message Date
adamdunkels ed1e945e66 Added guard code so that OFF_TIME is never zero 2009-04-03 20:08:05 +00:00
adamdunkels 8dbd2b2337 Significant power consumption optimization: LPP now keeps track of encounters with neighbors and uses this information to keep the radio switched off longer. 2009-04-03 19:59:22 +00:00
adamdunkels 1d86b01bfb Made optimizations explicit (and configurable). Added missing initialization of dutycycle protothread. Reduced default listen time and off time. 2009-04-03 11:45:06 +00:00
adamdunkels 04101aae36 Fixed alignment problem on the MSP430, where the LPP header may be misaligned 2009-03-31 17:39:54 +00:00
nvt-se e2cc8b2a3e send all queued packet once we have the chance. 2009-03-31 14:44:13 +00:00
nvt-se 1d47e2a8da send immediate probes only if the packet is directed to us.
sleep for OFF_TIME if the queue is empty.

restrict double packet lifetime timeouts to unicast packets.

stop ctimer in remove_queued_packet in case the function is not called
via the ctimer callback. it could overwrite a valid packet otherwise.
2009-03-31 14:11:25 +00:00
nvt-se dd082f7fcf improvements to lpp based on code from Adam and discussions with Thiemo.
* queue multiple packets
* send a strobe back immediately after receiving a data packet
* double the packet lifetime to allow for a missed probe
2009-03-31 12:47:00 +00:00
nvt-se d8caaca289 listen time and off time parameters configurable from outside because cc1020 needs longer listen time. 2009-03-26 12:50:57 +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 1cbc0f4ea9 Send announcement packets only if there are any announcements to send 2009-03-23 21:00:25 +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 dc7491f810 Bugfix and optimization: X-MAC did not properly switch the radio off after sending a packet, resulting in increased power consumption. For packets that require an ACK, we can let the radio be on in anticipation of the ACK (controlled with an WITH_ACK_OPTIMIZATION option) 2009-03-05 19:37:52 +00:00
adamdunkels d813d343c5 Cleaned up old left-over code 2009-03-01 20:38:57 +00:00
adamdunkels 7010eb84b8 Added support for communication power accounting. Energy is attributed to idle listening when the radio is switched off. Enegrgy is attributed to an incoming packet when it is received. Energy is attributed to an outgoing packet when it is transmitted. 2009-03-01 20:37:16 +00:00
adamdunkels e6907a1d8b Include random.h 2009-02-20 21:22:39 +00:00
adamdunkels aaa8c9d2c9 Construct the X-MAC header on the stack instead of directly in the packet header, because the packet header may be misaligned. A bit of cleanup in the code too. 2009-02-15 22:05:06 +00:00
adamdunkels e4b1ff461e Added MAC-layer announcement beacons to X-MAC. Configuratble through XMAC_CONF_ANNOUNCEMENTS 2009-02-14 20:35:03 +00:00
adamdunkels 585620c102 Reverted the recent change from random_rand() to rand(). It turned out that
since libc rand() returns a signed int, there were frequently problems with
timer values wrapping. By reverting to random_rand(), we can provide a
random generator that returns an unsigned and the timer problems are solved.
2009-02-11 11:08:53 +00:00
adamdunkels dd9ffd87c4 Added missing #include announcement.h 2009-02-08 20:14:18 +00:00
adamdunkels 085df6b630 Improved version of LPP with support for broadcasts as well as announcement data in the probes 2009-02-08 19:30:18 +00:00
adamdunkels 91d280c4c9 Reverted to the old behaviour on broadcasts: send strobes for both unicast and broadcast packets. 2009-02-07 18:45:50 +00:00
fros4943 e42d572f81 updated for latest mac driver structure 2008-11-12 12:42:41 +00:00
adamdunkels 7b238a91af Don't turn on the radio on after sending a broadcast 2008-09-04 17:44:01 +00:00
adamdunkels c0c26262c4 No need to send strobes for broadcast packets: just send the actual packet instead 2008-07-07 23:25:12 +00:00
adamdunkels 05454ce929 Documentation bugfix 2008-07-02 14:10:28 +00:00
adamdunkels 1093a8fe28 Added name to mac structure. Do not turn radio on when sending a broadcast packet. Changed default off time to half a second. 2008-06-30 08:10:02 +00:00
adamdunkels 247de015b5 added name to mac structure 2008-06-30 08:09:17 +00:00
adamdunkels c9528fb010 Added name, made default listen time shorter 2008-06-30 08:08:59 +00:00
adamdunkels a7dfa95551 Added a 'name' field in the mac structure, which allows boot-up code to print out the name of the currently selected MAC protocol 2008-06-30 08:08:27 +00:00
oliverschmidt a5fcfa2787 I seem to remember that we wanted to avoid ignoring gcc warnings that might trigger errors with other compilers ;-) 2008-05-16 21:31:57 +00:00
adamdunkels 532692e5a0 Removed reference to non-existant function rimebuf_attr_isset() 2008-05-16 15:04:10 +00:00
adamdunkels 8ea461b039 Changed on time to work with the current default tick time on the sky platform 2008-05-15 08:59:48 +00:00
adamdunkels dbab9fbdb5 A quick, initial implementation of the LPP power-saving MAC protocol (Musaloiu-E et al, IPSN 2008) 2008-05-15 08:56:29 +00:00
adamdunkels 412facb831 This is an initial commit of an implementation of the Chameleon
architecture for the Rime stack for Contiki. The Chameleon
architecture separates the header processing from the Rime protocol
logic. Instead of having each protocol create its own part of the
packet header, protocols use packet attributes. Before sending a
packet, a special Chameleon header processing module creates a packet
header from the packet attributes. The same Chameleon module parses
incoming packets and creates packet attributes from the header.

The details are in our SenSys 2007 paper:

Adam Dunkels, Fredrik Osterlind, Zhitao He. An Adaptive Communication
Architecture for Wireless Sensor Networks. In Proceedings of the Fifth
ACM Conference on Networked Embedded Sensor Systems (SenSys 2007),
Sydney, Australia, November 2007.

http://www.sics.se/~adam/dunkels07adaptive.pdf

This is a rewrite of the code that was developed for the paper.
2008-02-25 02:14:34 +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
adamdunkels be1dd57cb3 Stopping watchdog before sending packets to allow for wait times longer than 1 second. Reduced default on time to 5 ms. Added option for turning off X-MAC but keeping the radio turned on. 2008-02-24 21:07:28 +00:00
adamdunkels 32a3fa5d4a Added parameter to the mac off() method that specifies whether or not the radio should be turned off when the MAC layer is turned off 2008-02-24 21:05:28 +00:00
adamdunkels bf8b5c093d Made timetable code optional 2008-01-24 06:17:51 +00:00
adamdunkels 8a9b931a4b Rewrote most of the X-MAC code to make it easier to follow, debug and modify. Also added an optional, experimental time synchronized addition that makes X-MACs on different nodes explicitly de-synchronized 2008-01-23 15:00:54 +00:00
adamdunkels bd125aaac6 Changed the code so that the rtimer is only set from the rtimer (interrupt) code, and not from the non-rtimer code. Removed unused code that was supposed to turn the radio off when a packet for another node was heard (but which didn't really work anyway). Changed default on time to 1/100 seconds, and off time to 1/2 seconds 2008-01-14 09:26:42 +00:00
oliverschmidt a9ebc469b8 Avoid usage of POSIX function names even for static functions as some indirectly included system header might declare them. 2007-12-23 14:56:54 +00:00
adamdunkels 5c5775e93b Ensure that receiver_callback is set before calling it 2007-12-16 14:31:43 +00:00
adamdunkels 18fd561041 Avoid switching the radio on and off when the MAC layer is turned off. Cleanups. 2007-12-05 13:23:17 +00:00
adamdunkels 52a8e8d16b Fixed to match the Contiki code style 2007-11-26 15:31:32 +00:00
adamdunkels 5e7cbff22a Fixed compiler warnings 2007-11-17 10:12:19 +00:00
adamdunkels 1cb3bad088 Multiple bugfixes and updates to xmac code by Niclas 2007-11-12 22:29:37 +00:00
adamdunkels 67aa9e8589 Made initialization function return a pointer to the MAC driver structure, to make initialization nicer 2007-10-23 21:27:57 +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
fros4943 aa99049af0 simple tdma rtimer implemetation 2007-09-18 10:37:17 +00:00
fros4943 19b3035e36 simple tdma ctimer implementation 2007-09-18 10:36:36 +00:00