Fix Periodic Sync Terminate implementation for race
conditions with ULL scheduling by using a flag to stop any
new ULL scheduling to receive chain PDUs.
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
Update support for Periodic Advertising Synchronization
Receive Enable command, so that PDUs are received so that
contents of Extended Common Payload Format is parsed and
process for information like Channel Map Update and BIGInfo.
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
First implementation of periodic advertising sync filtering
requires existence of Direction Finding Extension in Radio
peripheral.
To add the filtering support for other Nodric SOCs software
based PDU traversing for CTEInfo should be implemented.
In case there is no DFE in Radio peripheral, actual filtering
is done in ULL.
The commit provides necessary changes to previous solution.
Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
Periodic advertisement synchronization may be filtered by CTE type.
If particular CTE type is not allowed then depening on filtering policy:
- if filtering policy is off synchronization if terminated
- if filtering policy is on synchronization is continued to
synchonize with another device from allowed adverisements list.
If synchronization is established and peer device changes CTE type
to one that is not allowed, synchronization should be maintained.
There are two new execution paths. First one is executed when
synchronization is created. In this case CTEILINE is enabled
to parse PDU for CTEInfo field. In this execution path CTE
type is verified. Second execution path does not include
parsing PDU for CTEInfo and verification of CTE type.
Information about sync allowed is added to node_rx instance
that transports received PDU data. In case the sync has to be
terminated the node_rx will not hold PDU data.
Also done event is extended with information about sync
termination if CTE type is not allowed and filtering
policy is off.
Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
Fix repeated periodic sync drift compensation invoked when
receiving chain PDUs which caused memory corruptions and
bus faults.
Use `is_aux_sched` flag in Periodic Sync's LLL context to
differentiate between the first AUX_SYNC_IND PDU followed by
use of LLL scheduling to receive following AUX_CHAIN_IND PDU
versus ULL scheduling being used to receive AUX_CHAIN_IND
PDUs.
Drift compensation to be done only using the AUX_SYNC_IND
PDU and not on reception of AUX_CHAIN_IND PDU using ULL
scheduling.
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This was changes when sync chain handling was done in lll_scan_aux, we
can now revert to original code.
Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@codecoup.pl>
Periodic advertising train scanner implemented in lll_scan_aux adds lots
of branches that cannot be compiled out with periodic advertising sync
disabled.
This commit moves sync parts of the code from lll_scan_aux to lll_sync.
Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@codecoup.pl>
This adds complete support for scanning for periodic advertising trains.
AUX_SYNC_IND is always scheduled from ULL as usual, then code for aux
scanning is reused to allow for AUX_CHAIN_IND scanning scheduled from
both ULL and LLL, depending on AuxPtr.
Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@codecoup.pl>
Added implementation in Periodic Advertising Synchronization
to support Channel Map Update Indications present in the
ACAD fields of the AUX_SYNC_IND PDUs.
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
To enable or disable CTE sampling in periodic advertising scanner LLL
implementation lll_sync is extended by lll_df_sync member.
The lll_df_sync is a double buffer for lll_df_sync_cfg.
It will be used by LL thread to enable or disable CTE sampling and
provide configuration for sampling CTE in AoA mode.
Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
Added implementation to perform Periodic Sync Terminate,
generation of Sync Lost on terminate and on remote device
termination of Periodic Advertising.
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
Added implementation to handle Periodic Advertising clock
drift in the created Periodic Advertising Sync instance.
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
Added initial implementation of setting up of Periodic Sync
and scheduling the Radio Events.
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
