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Bluetooth: controller: Increase advertising random delay resolution

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Increase the resolution of advertising random delay from
1 ms unit to 1 us units. The controller scheduling will
floor it to nearest 32KHz clock unit on nRF5 series.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2018-09-28 15:09:35 +02:00 • committed by Carles Cufí
commit d5836195d7
1 changed files with 4 additions and 5 deletions
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9
subsys/bluetooth/controller/ll_sw/ctrl.c
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@ -3905,12 +3905,12 @@ static inline u32_t isr_close_adv(void)
if ((_radio.state == STATE_CLOSE) &&
(!_radio.advertiser.is_hdcd)) {
u32_t ticker_status;
u8_t random_delay;
u16_t random_delay;
entropy_nrf_get_entropy_isr(_radio.entropy,
&random_delay,
(void *)&random_delay,
sizeof(random_delay));
random_delay %= 10;
random_delay %= 10000;
random_delay += 1;
/* Call to ticker_update can fail under the race
@ -3923,8 +3923,7 @@ static inline u32_t isr_close_adv(void)
ticker_update(RADIO_TICKER_INSTANCE_ID_RADIO,
RADIO_TICKER_USER_ID_WORKER,
RADIO_TICKER_ID_ADV,
HAL_TICKER_US_TO_TICKS(random_delay *
1000),
HAL_TICKER_US_TO_TICKS(random_delay),
0, 0, 0, 0, 0, ticker_update_adv_assert,
(void *)__LINE__);
LL_ASSERT((ticker_status == TICKER_STATUS_SUCCESS) ||