1 /*
2 * Copyright (c) 2017 Linaro Limited
3 * Copyright (c) 2018-2019 Foundries.io
4 * Copyright (c) 2022 Laird Connectivity
5 *
6 * SPDX-License-Identifier: Apache-2.0
7 */
8
9 /*
10 * Source material for uCIFI battery object (3411):
11 * https://raw.githubusercontent.com/OpenMobileAlliance/lwm2m-registry/prod/3411.xml
12 */
13
14 #define LOG_MODULE_NAME net_ucifi_battery
15 #define LOG_LEVEL CONFIG_LWM2M_LOG_LEVEL
16
17 #include <zephyr/logging/log.h>
18 LOG_MODULE_REGISTER(LOG_MODULE_NAME);
19
20 #include <stdint.h>
21 #include <zephyr/init.h>
22
23 #include "lwm2m_object.h"
24 #include "lwm2m_engine.h"
25 #include "lwm2m_resource_ids.h"
26 #include "ucifi_battery.h"
27
28 #define BATTERY_VERSION_MAJOR 1
29 #define BATTERY_VERSION_MINOR 0
30
31 #define MAX_INSTANCE_COUNT CONFIG_LWM2M_UCIFI_BATTERY_INSTANCE_COUNT
32
33 #define BATTERY_MAX_ID 12
34 #define RESOURCE_INSTANCE_COUNT (BATTERY_MAX_ID)
35
36 /* resource state variables */
37 static uint8_t battery_level[MAX_INSTANCE_COUNT];
38 static uint32_t supply_loss_counter[MAX_INSTANCE_COUNT];
39
40 static struct lwm2m_engine_obj battery;
41 static struct lwm2m_engine_obj_field fields[] = {
42 OBJ_FIELD_DATA(UCIFI_BATTERY_LEVEL_RID, R, U8),
43 OBJ_FIELD_DATA(UCIFI_BATTERY_CAPACITY_RID, R_OPT, FLOAT),
44 OBJ_FIELD_DATA(UCIFI_BATTERY_VOLTAGE_RID, R_OPT, FLOAT),
45 OBJ_FIELD_DATA(UCIFI_BATTERY_TYPE_RID, RW_OPT, STRING),
46 OBJ_FIELD_DATA(UCIFI_BATTERY_LOW_THESHOLD_RID, RW_OPT, U8),
47 OBJ_FIELD_DATA(UCIFI_BATTERY_LEVEL_TOO_LOW_RID, R_OPT, BOOL),
48 OBJ_FIELD_DATA(UCIFI_BATTERY_SHUTDOWN_RID, RW_OPT, BOOL),
49 OBJ_FIELD_DATA(UCIFI_BATTERY_NUM_CYCLES_RID, R_OPT, U32),
50 OBJ_FIELD_DATA(UCIFI_BATTERY_SUPPLY_LOSS_RID, R_OPT, BOOL),
51 OBJ_FIELD_DATA(UCIFI_BATTERY_SUPPLY_LOSS_COUNTER_RID, R_OPT, U32),
52 OBJ_FIELD_EXECUTE_OPT(UCIFI_BATTERY_SUPPLY_LOSS_COUNTER_RESET_RID),
53 OBJ_FIELD_DATA(UCIFI_BATTERY_SUPPLY_LOSS_REASON_RID, R_OPT, STRING),
54 };
55
56 static struct lwm2m_engine_obj_inst inst[MAX_INSTANCE_COUNT];
57 static struct lwm2m_engine_res res[MAX_INSTANCE_COUNT][BATTERY_MAX_ID];
58 static struct lwm2m_engine_res_inst res_inst[MAX_INSTANCE_COUNT][RESOURCE_INSTANCE_COUNT];
59
clear_supply_loss_counter(uint16_t obj_inst_id,int index)60 static void clear_supply_loss_counter(uint16_t obj_inst_id, int index)
61 {
62 supply_loss_counter[index] = 0;
63 lwm2m_notify_observer(UCIFI_OBJECT_BATTERY_ID, obj_inst_id,
64 UCIFI_BATTERY_SUPPLY_LOSS_COUNTER_RID);
65 }
66
supply_loss_counter_reset_cb(uint16_t obj_inst_id,uint8_t * args,uint16_t args_len)67 static int supply_loss_counter_reset_cb(uint16_t obj_inst_id, uint8_t *args, uint16_t args_len)
68 {
69 int i;
70
71 LOG_DBG("RESET supply loss counter %d", obj_inst_id);
72 for (i = 0; i < MAX_INSTANCE_COUNT; i++) {
73 if (inst[i].obj && inst[i].obj_inst_id == obj_inst_id) {
74 clear_supply_loss_counter(obj_inst_id, i);
75 return 0;
76 }
77 }
78
79 return -ENOENT;
80 }
81
battery_create(uint16_t obj_inst_id)82 static struct lwm2m_engine_obj_inst *battery_create(uint16_t obj_inst_id)
83 {
84 int index, i = 0, j = 0;
85
86 /* Check that there is no other instance with this ID */
87 for (index = 0; index < MAX_INSTANCE_COUNT; index++) {
88 if (inst[index].obj && inst[index].obj_inst_id == obj_inst_id) {
89 LOG_ERR("Can not create instance - "
90 "already existing: %u",
91 obj_inst_id);
92 return NULL;
93 }
94 }
95
96 for (index = 0; index < MAX_INSTANCE_COUNT; index++) {
97 if (!inst[index].obj) {
98 break;
99 }
100 }
101
102 if (index >= MAX_INSTANCE_COUNT) {
103 LOG_ERR("Can not create instance - no more room: %u", obj_inst_id);
104 return NULL;
105 }
106
107 /* Set default values */
108 battery_level[index] = 0;
109 supply_loss_counter[index] = 0;
110
111 (void)memset(res[index], 0, sizeof(res[index][0]) * ARRAY_SIZE(res[index]));
112 init_res_instance(res_inst[index], ARRAY_SIZE(res_inst[index]));
113
114 /* initialize instance resource data */
115 INIT_OBJ_RES_DATA(UCIFI_BATTERY_LEVEL_RID, res[index], i, res_inst[index], j,
116 &battery_level[index], sizeof(*battery_level));
117 INIT_OBJ_RES_OPTDATA(UCIFI_BATTERY_CAPACITY_RID, res[index], i, res_inst[index], j);
118 INIT_OBJ_RES_OPTDATA(UCIFI_BATTERY_VOLTAGE_RID, res[index], i, res_inst[index], j);
119 INIT_OBJ_RES_OPTDATA(UCIFI_BATTERY_TYPE_RID, res[index], i, res_inst[index], j);
120 INIT_OBJ_RES_OPTDATA(UCIFI_BATTERY_LOW_THESHOLD_RID, res[index], i, res_inst[index], j);
121 INIT_OBJ_RES_OPTDATA(UCIFI_BATTERY_LEVEL_TOO_LOW_RID, res[index], i, res_inst[index], j);
122 INIT_OBJ_RES_OPTDATA(UCIFI_BATTERY_SHUTDOWN_RID, res[index], i, res_inst[index], j);
123 INIT_OBJ_RES_OPTDATA(UCIFI_BATTERY_NUM_CYCLES_RID, res[index], i, res_inst[index], j);
124 INIT_OBJ_RES_OPTDATA(UCIFI_BATTERY_SUPPLY_LOSS_RID, res[index], i, res_inst[index], j);
125 INIT_OBJ_RES_DATA(UCIFI_BATTERY_SUPPLY_LOSS_COUNTER_RID, res[index], i, res_inst[index], j,
126 &supply_loss_counter[index], sizeof(*supply_loss_counter));
127 INIT_OBJ_RES_EXECUTE(UCIFI_BATTERY_SUPPLY_LOSS_COUNTER_RESET_RID, res[index], i,
128 supply_loss_counter_reset_cb);
129 INIT_OBJ_RES_OPTDATA(UCIFI_BATTERY_SUPPLY_LOSS_REASON_RID, res[index], i, res_inst[index],
130 j);
131
132 inst[index].resources = res[index];
133 inst[index].resource_count = i;
134 LOG_DBG("Create uCIFI Battery instance: %d", obj_inst_id);
135 return &inst[index];
136 }
137
ucifi_battery_init(void)138 static int ucifi_battery_init(void)
139 {
140 battery.obj_id = UCIFI_OBJECT_BATTERY_ID;
141 battery.version_major = BATTERY_VERSION_MAJOR;
142 battery.version_minor = BATTERY_VERSION_MINOR;
143 battery.is_core = false;
144 battery.fields = fields;
145 battery.field_count = ARRAY_SIZE(fields);
146 battery.max_instance_count = MAX_INSTANCE_COUNT;
147 battery.create_cb = battery_create;
148 lwm2m_register_obj(&battery);
149
150 return 0;
151 }
152
153 SYS_INIT(ucifi_battery_init, APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
154
