adamdunkels
be117afe04
After a lot of tweaking and twiddling with the timing of the ContikiMAC code and the mechanisms in the CC2420 driver, things seem to work somewhat stable now - knock on wood!
2010-04-04 07:49:30 +00:00
adamdunkels
a637ddaf4e
Flush the rxfifo when turning off the radio instead of when turning it on. This seems to fix a bug that was seen in mspsim and seemed to appear on real hardware too.
2010-04-03 16:01:00 +00:00
adamdunkels
c9ca5d61e2
Rewrote the pending_packet() function to check the FIFOP pin instead of the 'pending' variable - works must better on real hardware and is now supported by the latest mspsim
2010-03-31 19:08:56 +00:00
adamdunkels
5e7f99a2c0
Reverted the removal of the code that checked the FIFOP pin before reading a packet - checking FIFOP is the correct way to do it. Also added TXONCCA for now, including new radio.h return values to indicate a link-layer collision.
2010-03-30 23:00:05 +00:00
adamdunkels
a3a8c0e179
Safety check: only try to read a packet if it was preceeded by an interrupt (which sets the pending flag)
2010-03-19 13:18:53 +00:00
adamdunkels
67b0170a43
Bugfix: don't care about FIFOP when reading a packet; if the radio rx had been turned off before a packet was read, FIFOP would be zero and the packet would be trashed
2010-03-16 18:10:09 +00:00
adamdunkels
0035a70537
Reworked the locking code, which seems to fix a few bugs caused by the interaction with contikimac. Contikimac performs a CCA check in a preempting rtimer, which requires underlying code to properly call the GET_LOCK() macro. This fix seems to solve most problems, but there may be others left.
2010-03-14 22:45:20 +00:00
joxe
1214b1fa40
made cc2420 panid and short address not dependent on endianness
2010-03-09 15:45:29 +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
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
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
0b2b7bcdba
Removed inadvertedly left-over include file
2010-02-18 23:52:34 +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
fab672c7ba
Reverted the FIFOP->FIFO change; it didn't work :(
2010-01-14 23:32:05 +00:00
zhitao
93c748cc74
Bug fix for mysterious packet loss : check FIFO pin instead of FIFOP pin for any unread RX FIFO data;
...
Added protection of packet timestamp across interrupts. Note that race condition can still occur as interrupts and self-scheduled reads of the RX FIFO interleave in certain unusual patterns. More investigation is needed.
2009-12-11 18:32:54 +00:00
fros4943
9cc57c4324
generic radio return values
...
+ minor bug fix: SFD may go high without transmission starting (very seldom)
2009-11-13 10:07:53 +00:00
adamdunkels
8745235a79
Minor codestyle fix
2009-09-09 21:07:42 +00:00
nifi
c81dbb6c89
Fixed problem with the radio driver changing transmission power to max when not specified at transmission. Also fixed bug where the lock was released when setting the transmission power.
...
Thanks to Djamel Djenouri and Marcus Lundn for identifying the problem.
2009-08-19 15:05:05 +00:00
fros4943
18a98bb573
bug fix: we need to explicitly turn off the cc2420 listen mode after a packet transmission
2009-08-19 12:00:04 +00:00
joxe
0c8b200987
added autoack configuration for CC2420 and reversed long ieee address for address recognition
2009-07-28 22:24:53 +00:00
adamdunkels
92862ad2a5
Increased the number of iterations for ugly-hack-loop that checks if a transmission has started, to accommodate a faster CPU speed on the MSP430
2009-04-29 11:38:50 +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
f634ccfb3d
Set transmission power based on packet attribute
2009-03-11 20:38:53 +00:00
adamdunkels
57b9cab27e
Set RSSI, correlation, and timestamp as packet attributes for incoming packets
2009-03-02 21:59:01 +00:00
nifi
dee785ae88
added configuration of checksum and timesynch
2009-02-25 21:21:06 +00:00
adamdunkels
6a460fecdd
There is problem with the CC2420 driver: under high traffic load the packets often get mangled in the receive FIFO. Not sure why this happens or how to best prevent it. As a temporary workaround, I've added an additional CRC16 check to the incoming packets. This eats two bytes from each packet, but at least protects against the erroneous packets we've seen quite a few of lately. The reception code was also cleaned up, which resulted in a smaller code size.
2008-08-26 21:44:03 +00:00
adamdunkels
66876625d4
Changed name of the simple-cc2420 module to cc2420: changed all function names and variable names from simple_cc2420_* to cc2420_*.
2008-07-02 09:05:40 +00:00
adamdunkels
1586d8f36f
Changed filename of the CC2420 driver from simple-cc2420 to cc2420.
2008-07-01 21:02:51 +00:00
adamdunkels
39abed8672
Moved old CC2420 driver to the backyard
2008-02-24 22:29:08 +00:00
bg-
70ddc0f27e
* If we detect a RXFIFO overflow schedule a poll of the device driver.
2007-07-30 14:54:49 +00:00
bg-
8f0d9aab89
* Change max life of neigbour entries from 60 to 30 seconds by
...
changing the time unit (quanta) from 4 to 2 seconds.
2007-06-28 15:08:53 +00:00
bg-
08d547780c
* Some extra delay when broadcasting to break potential symmetries.
2007-06-01 14:37:02 +00:00
bg-
81b684414d
* Changed implementation for dealing with retransmissions to be
...
strictly event driven. The old implementation was rather process
like and the new one is still implemented as a process.
2007-05-31 10:15:57 +00:00
bg-
1009c3fabf
* Literal constants REMOTE_*.
2007-05-21 14:24:51 +00:00
bg-
34b1d02607
* Need to track if this was the incoming interface.
2007-05-08 08:27:34 +00:00
bg-
536703d0a2
* Check in with debug off!
2007-05-07 12:02:14 +00:00
bg-
d34db6ee92
* Change retransmission scheme both for unicasts and for
...
broadcasts. Only count retransmissions that actually caused
transmission (according to the hardware).
2007-05-07 12:01:32 +00:00
bg-
83f2b1da00
* Use uip_fw return codes.
...
* Use unicast retransmission scheme also for broadcasts.
2007-05-02 14:51:20 +00:00
bg-
e7d7e31bc9
* Better management of "DATA ACK"s.
2007-04-30 09:41:42 +00:00
bg-
478953dcf4
* Randomised backoff when broadcasting.
...
* Only warn about rxfifo overflows when sending.
* More intricate tests to verify if transmission really started.
2007-04-04 11:46:10 +00:00
bg-
95164eb39f
* Perform RXFIFO overflow check as late as possible when sending.
2007-02-01 14:00:27 +00:00
bg-
2a879202a2
* Initial AVR port.
...
* Check for RXFIFO overflow before sending.
* Fix in loop that waits for SFD start.
2007-01-24 16:26:55 +00:00
bg-
29572668ac
* Typo in comment.
2006-12-20 13:42:55 +00:00
bg-
5d970109c8
* If broadcast transmission never starts, retry with (nearly)
...
exponential backoff.
* Fine-tune check for transmission start.
2006-12-01 15:04:04 +00:00
bg-
f3a6cee55b
* Oops, some machine dependent changes was accidentally committed.
2006-11-17 13:03:51 +00:00
bg-
27e531baad
* Set CC2420_RXCTRL1.RXBPF_LOCUR=1 as recommended in data sheet.
...
* Use PRINTF to disable debug printfs.
2006-11-17 12:27:23 +00:00
bg-
5dacf0be11
Move misc. routines to new file.
2006-08-09 17:39:39 +00:00
bg-
fb94d50410
Change typedef of uip_ipaddr_t from a vector type to a union.
...
typedef union uip_ip4addr_t {
u16_t u16[2];
u8_t u8[4];
} uip_ip4addr_t;
typedef uip_ip4addr_t uip_ipaddr_t;
This implies that one must consistently pass pointers to
uip_ipaddr_t:s and not mix and match pointers with
uip_ipaddr_t:s as was done earlier.
2006-08-09 16:13:39 +00:00
bg-
4eee7b8bf4
Slightly outdated versions were imported to sf.
2006-08-02 14:33:36 +00:00
adamdunkels
c9e808d638
Import of the contiki-2.x development code from the SICS internal CVS server
2006-06-17 22:41:10 +00:00
