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Bluetooth: Controller: tune the xtal and hard realtime radio start offsets

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Reduce the time limit for active clock startup and increase
the CPU usage time limit before hard real-time radio
transmit/receive.

Due to isr_wrapper overhead in ARM architectures, more time
was used before hard real-time radio transmission or
reception which was detected by controller implementation
and the controller aborted the radio transactions.

This commit permits more CPU utilization by the controller
before hard real-time radio transactions start.

Change-Id: Id976add80c70cabc753c43dfac6f6603588458d9
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
This commit is contained in:
Vinayak Chettimada 2016-12-14 11:22:22 +01:00 • committed by Johan Hedberg
commit f0bd2805bc
1 changed files with 2 additions and 2 deletions
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4
subsys/bluetooth/controller/ll/ctrl.c
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@ -47,8 +47,8 @@
#define RADIO_CONN_EVENTS(x, y) ((uint16_t)((x) / (y)))
#define RADIO_TICKER_JITTER_US 16
#define RADIO_TICKER_START_PART_US 200
#define RADIO_TICKER_XTAL_OFFSET_US 1500
#define RADIO_TICKER_START_PART_US 300
#define RADIO_TICKER_XTAL_OFFSET_US 1200
#define RADIO_TICKER_PREEMPT_PART_US 0
#define RADIO_TICKER_PREEMPT_PART_MIN_US 0
#define RADIO_TICKER_PREEMPT_PART_MAX_US RADIO_TICKER_XTAL_OFFSET_US