1 /*
2 * Copyright 2018 Oticon A/S
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6 #include <stdlib.h>
7 #include <string.h>
8 #include "bs_pc_2G4_types.h"
9 #include "bs_oswrap.h"
10 #include "bs_utils.h"
11 #include "p2G4_pending_tx_rx_list.h"
12
13 tx_l_c_t tx_l_c;
14 static tx_el_t *tx_list = NULL;
15
16 static uint nbr_devs;
17 static int max_tx_nbr; //highest device transmitting at this point
18
txl_create(uint n_devs)19 void txl_create(uint n_devs){
20 tx_l_c.tx_list = bs_calloc(n_devs, sizeof(tx_el_t));
21 tx_l_c.used = bs_calloc(n_devs, sizeof(uint));
22 tx_l_c.ctr = 0;
23 tx_list = tx_l_c.tx_list;
24 nbr_devs = n_devs;
25 max_tx_nbr = -1;
26 }
27
txl_free(void)28 void txl_free(void){
29 if ( tx_l_c.tx_list != NULL ) {
30 for (int d = 0 ; d < nbr_devs; d++){
31 if ( tx_list[d].packet != NULL ) {
32 free(tx_list[d].packet);
33 }
34 }
35 free(tx_l_c.tx_list);
36 free(tx_l_c.used);
37 }
38 }
39
40 /**
41 * Register a tx which has just been initiated by a device
42 * Note that the tx itself does not start yet (when that happens txl_activate() should be called)
43 */
txl_register(uint d,p2G4_txv2_t * tx_s,uint8_t * packet)44 void txl_register(uint d, p2G4_txv2_t *tx_s, uint8_t* packet){
45 tx_l_c.used[d] = TXS_OFF;
46 memcpy(&(tx_list[d].tx_s), tx_s, sizeof(p2G4_txv2_t) );
47 tx_list[d].packet = packet;
48 }
49
50 /**
51 * Activate a given tx in the tx_list_c (we have reached the begining of the Tx)
52 */
txl_start_tx(uint d)53 void txl_start_tx(uint d){
54 tx_l_c.used[d] = TXS_NOISE;
55 tx_l_c.ctr++;
56 max_tx_nbr = BS_MAX(max_tx_nbr, ((int)d));
57 }
58
59 /**
60 * Activate a given tx in the tx_list_c (we have reached the begining of the Tx)
61 */
txl_start_packet(uint d)62 void txl_start_packet(uint d){
63 tx_l_c.used[d] |= TXS_PACKET_ONGOING | TXS_PACKET_STARTED;
64 /*Note: No need to update the counter, as the interference level is the same with or without packet*/
65 }
66
67 /**
68 * Mark that the packet has ended (noise may continue)
69 */
txl_end_packet(uint d)70 void txl_end_packet(uint d){
71 tx_l_c.used[d] |= TXS_PACKET_ENDED;
72 tx_l_c.used[d] &= ~TXS_PACKET_ONGOING;
73 /*Note: No need to update the counter, as the interference level is the same with or without packet*/
74 }
75
76 /**
77 * A given tx has just ended
78 */
txl_clear(uint d)79 void txl_clear(uint d){
80 tx_l_c.used[d] = TXS_OFF;
81 if (tx_list[d].packet != NULL) {
82 free(tx_list[d].packet);
83 tx_list[d].packet = NULL;
84 }
85 tx_l_c.ctr++;
86
87 for (int i = max_tx_nbr; i >= 0 ; i--){
88 if (tx_l_c.used[i]){
89 max_tx_nbr = i;
90 return;
91 }
92 }
93 max_tx_nbr = -1;//if we didnt find any
94 }
95
txl_get_max_tx_nbr(void)96 int txl_get_max_tx_nbr(void){
97 return max_tx_nbr;
98 }
99
