1 /* 2 * Copyright (c) 2018-2019 Nordic Semiconductor ASA 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #define EVENT_OVERHEAD_XTAL_US 1500 8 #define EVENT_OVERHEAD_PREEMPT_US 0 /* if <= min, then dynamic preempt */ 9 #define EVENT_OVERHEAD_PREEMPT_MIN_US 150 10 #define EVENT_OVERHEAD_PREEMPT_MAX_US EVENT_OVERHEAD_XTAL_US 11 #define EVENT_OVERHEAD_START_US 300 12 /* Worst-case time margin needed after event end-time in the air 13 * (done/preempt race margin + power-down/chain delay) 14 */ 15 #define EVENT_OVERHEAD_END_US 40 16 #define EVENT_JITTER_US 16 17 /* Ticker resolution margin 18 * Needed due to the lack of fine timing resolution in ticker_start 19 * and ticker_update. Set to 32 us, which is ~1 tick with 32768 Hz 20 * clock. 21 */ 22 #define EVENT_TICKER_RES_MARGIN_US 32 23 24 #define EVENT_RX_JITTER_US(phy) 16 /* Radio Rx timing uncertainty */ 25 #define EVENT_RX_TO_US(phy) ((((((phy)&0x03) + 4)<<3)/BIT((((phy)&0x3)>>1))) + \ 26 EVENT_RX_JITTER_US(phy)) 27 28 /* TODO - fix up numbers re. HW */ 29 #define EVENT_RX_TX_TURNAROUND(phy) ((phy) == 1?100:((phy) == 2 ? 80:900)) 30
