1 /*
2 * Copyright (c) 2017, Nordic Semiconductor ASA
3 * All rights reserved.
4 *
5 * SPDX-License-Identifier: BSD-3-Clause
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice, this
11 * list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
18 * contributors may be used to endorse or promote products derived from this
19 * software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 *
33 */
34
35 #include "nrf_802154_common_utils.h"
36 #include "nrf_802154_const.h"
37 #include "nrf_802154_nrfx_addons.h"
38
nrf_802154_energy_level_from_dbm_calculate(int8_t ed_dbm)39 uint8_t nrf_802154_energy_level_from_dbm_calculate(int8_t ed_dbm)
40 {
41 return nrf_802154_addons_energy_level_from_dbm_calculate(ed_dbm);
42 }
43
nrf_802154_ccaedthres_from_dbm_calculate(int8_t dbm)44 uint8_t nrf_802154_ccaedthres_from_dbm_calculate(int8_t dbm)
45 {
46 return dbm - ED_RSSIOFFS;
47 }
48
nrf_802154_first_symbol_timestamp_get(uint64_t end_timestamp,uint8_t psdu_length)49 uint64_t nrf_802154_first_symbol_timestamp_get(uint64_t end_timestamp, uint8_t psdu_length)
50 {
51 uint32_t frame_symbols = PHY_SHR_SYMBOLS;
52
53 frame_symbols += (PHR_SIZE + psdu_length) * PHY_SYMBOLS_PER_OCTET;
54
55 return end_timestamp - (frame_symbols * PHY_US_PER_SYMBOL);
56 }
57
nrf_802154_mhr_timestamp_get(uint64_t end_timestamp,uint8_t psdu_length)58 uint64_t nrf_802154_mhr_timestamp_get(uint64_t end_timestamp, uint8_t psdu_length)
59 {
60 return end_timestamp - (psdu_length * PHY_SYMBOLS_PER_OCTET * PHY_US_PER_SYMBOL);
61 }
62
nrf_802154_timestamp_end_to_phr_convert(uint64_t end_timestamp,uint8_t psdu_length)63 uint64_t nrf_802154_timestamp_end_to_phr_convert(uint64_t end_timestamp, uint8_t psdu_length)
64 {
65 uint32_t frame_symbols = (PHR_SIZE + psdu_length) * PHY_SYMBOLS_PER_OCTET;
66
67 return end_timestamp - (frame_symbols * PHY_US_PER_SYMBOL);
68 }
69
nrf_802154_timestamp_phr_to_shr_convert(uint64_t phr_timestamp)70 uint64_t nrf_802154_timestamp_phr_to_shr_convert(uint64_t phr_timestamp)
71 {
72 return phr_timestamp - (PHY_SHR_SYMBOLS * PHY_US_PER_SYMBOL);
73 }
74
nrf_802154_timestamp_phr_to_mhr_convert(uint64_t phr_timestamp)75 uint64_t nrf_802154_timestamp_phr_to_mhr_convert(uint64_t phr_timestamp)
76 {
77 return phr_timestamp + (PHR_SIZE * PHY_SYMBOLS_PER_OCTET * PHY_US_PER_SYMBOL);
78 }
79
