Contiki-NG
tsch-timeslot-timing.c
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32 
33 /**
34  * \file
35  * IEEE 802.15.4 TSCH timeslot timings
36  * \author
37  * Simon Duquennoy <simon.duquennoy@ri.se>
38  *
39  */
40 
41 /**
42  * \addtogroup tsch
43  * @{
44 */
45 
46 #include "contiki.h"
47 #include "net/mac/tsch/tsch.h"
48 
49 /**
50  * \brief The default timeslot timing in the standard is a guard time of
51  * 2200 us, a Tx offset of 2120 us and a Rx offset of 1120 us.
52  * As a result, the listening device has a guard time not centered
53  * on the expected Tx time. This is to be fixed in the next iteration
54  * of the standard. This can be enabled with:
55  * TxOffset: 2120
56  * RxOffset: 1120
57  * RxWait: 2200
58  *
59  * Instead, we align the Rx guard time on expected Tx time. The Rx
60  * guard time is user-configurable with TSCH_CONF_RX_WAIT.
61  * (TxOffset - (RxWait / 2)) instead
62  */
63 
65  1800, /* CCAOffset */
66  128, /* CCA */
67  2120, /* TxOffset */
68  (2120 - (TSCH_CONF_RX_WAIT / 2)), /* RxOffset */
69  800, /* RxAckDelay */
70  1000, /* TxAckDelay */
71  TSCH_CONF_RX_WAIT, /* RxWait */
72  400, /* AckWait */
73  192, /* RxTx */
74  2400, /* MaxAck */
75  4256, /* MaxTx */
76  10000, /* TimeslotLength */
77 };
78 
79 /** @} */
Main API declarations for TSCH.
uint16_t tsch_timeslot_timing_usec[tsch_ts_elements_count]
TSCH timeslot timing elements in micro-seconds.
Definition: tsch-types.h:149
const tsch_timeslot_timing_usec tsch_timeslot_timing_us_10000
The default timeslot timing in the standard is a guard time of 2200 us, a Tx offset of 2120 us and a ...