1 /*
2 * Copyright (c) 2017 Linaro Limited
3 * Copyright (c) 2018-2019 Foundries.io
4 * Copyright (c) 2020 Laird Connectivity
5 *
6 * SPDX-License-Identifier: Apache-2.0
7 */
8
9 #define LOG_MODULE_NAME net_ipso_pressure_sensor
10 #define LOG_LEVEL CONFIG_LWM2M_LOG_LEVEL
11
12 #include <zephyr/logging/log.h>
13 LOG_MODULE_REGISTER(LOG_MODULE_NAME);
14
15 #include <stdint.h>
16 #include <zephyr/init.h>
17
18 #include "lwm2m_object.h"
19 #include "lwm2m_engine.h"
20 #include "lwm2m_resource_ids.h"
21
22 #define PRESSURE_VERSION_MAJOR 1
23
24 #if defined(CONFIG_LWM2M_IPSO_PRESSURE_SENSOR_VERSION_1_1)
25 #define PRESSURE_VERSION_MINOR 1
26 #define NUMBER_OF_OBJ_FIELDS 13
27 #else
28 #define PRESSURE_VERSION_MINOR 0
29 #define NUMBER_OF_OBJ_FIELDS 9
30 #endif /* defined(CONFIG_LWM2M_IPSO_PRESSURE_SENSOR_VERSION_1_1) */
31
32 #define MAX_INSTANCE_COUNT CONFIG_LWM2M_IPSO_PRESSURE_SENSOR_INSTANCE_COUNT
33
34 #define IPSO_OBJECT_ID IPSO_OBJECT_PRESSURE_ID
35
36 #define SENSOR_NAME "Pressure"
37
38 #define UNIT_STR_MAX_SIZE 8
39
40 /*
41 * Calculate resource instances as follows:
42 * start with NUMBER_OF_OBJ_FIELDS
43 * subtract EXEC resources (1)
44 */
45 #define RESOURCE_INSTANCE_COUNT (NUMBER_OF_OBJ_FIELDS - 1)
46
47 /* resource state variables */
48 static double sensor_value[MAX_INSTANCE_COUNT];
49 static char units[MAX_INSTANCE_COUNT][UNIT_STR_MAX_SIZE];
50 static double min_measured_value[MAX_INSTANCE_COUNT];
51 static double max_measured_value[MAX_INSTANCE_COUNT];
52 static double min_range_value[MAX_INSTANCE_COUNT];
53 static double max_range_value[MAX_INSTANCE_COUNT];
54
55 static struct lwm2m_engine_obj sensor;
56 static struct lwm2m_engine_obj_field fields[] = {
57 OBJ_FIELD_DATA(SENSOR_VALUE_RID, R, FLOAT),
58 OBJ_FIELD_DATA(SENSOR_UNITS_RID, R_OPT, STRING),
59 OBJ_FIELD_DATA(MIN_MEASURED_VALUE_RID, R_OPT, FLOAT),
60 OBJ_FIELD_DATA(MAX_MEASURED_VALUE_RID, R_OPT, FLOAT),
61 OBJ_FIELD_DATA(MIN_RANGE_VALUE_RID, R_OPT, FLOAT),
62 OBJ_FIELD_DATA(MAX_RANGE_VALUE_RID, R_OPT, FLOAT),
63 OBJ_FIELD_EXECUTE_OPT(RESET_MIN_MAX_MEASURED_VALUES_RID),
64 OBJ_FIELD_DATA(CURRENT_CALIBRATION_RID, R_OPT, FLOAT),
65 OBJ_FIELD_DATA(APPLICATION_TYPE_RID, RW_OPT, STRING),
66 #if defined(CONFIG_LWM2M_IPSO_PRESSURE_SENSOR_VERSION_1_1)
67 OBJ_FIELD_DATA(TIMESTAMP_RID, R_OPT, TIME),
68 OBJ_FIELD_DATA(FRACTIONAL_TIMESTAMP_RID, R_OPT, FLOAT),
69 OBJ_FIELD_DATA(MEASUREMENT_QUALITY_INDICATOR_RID, R_OPT, U8),
70 OBJ_FIELD_DATA(MEASUREMENT_QUALITY_LEVEL_RID, R_OPT, U8),
71 #endif
72 };
73
74 static struct lwm2m_engine_obj_inst inst[MAX_INSTANCE_COUNT];
75 static struct lwm2m_engine_res res[MAX_INSTANCE_COUNT][NUMBER_OF_OBJ_FIELDS];
76 static struct lwm2m_engine_res_inst res_inst[MAX_INSTANCE_COUNT]
77 [RESOURCE_INSTANCE_COUNT];
78
update_min_measured(uint16_t obj_inst_id,int index)79 static void update_min_measured(uint16_t obj_inst_id, int index)
80 {
81 min_measured_value[index] = sensor_value[index];
82 lwm2m_notify_observer(IPSO_OBJECT_ID, obj_inst_id, MIN_MEASURED_VALUE_RID);
83 }
84
update_max_measured(uint16_t obj_inst_id,int index)85 static void update_max_measured(uint16_t obj_inst_id, int index)
86 {
87 max_measured_value[index] = sensor_value[index];
88 lwm2m_notify_observer(IPSO_OBJECT_ID, obj_inst_id, MAX_MEASURED_VALUE_RID);
89 }
90
reset_min_max_measured_values_cb(uint16_t obj_inst_id,uint8_t * args,uint16_t args_len)91 static int reset_min_max_measured_values_cb(uint16_t obj_inst_id,
92 uint8_t *args, uint16_t args_len)
93 {
94 int i;
95
96 LOG_DBG("RESET MIN/MAX %d", obj_inst_id);
97 for (i = 0; i < MAX_INSTANCE_COUNT; i++) {
98 if (inst[i].obj && inst[i].obj_inst_id == obj_inst_id) {
99 update_min_measured(obj_inst_id, i);
100 update_max_measured(obj_inst_id, i);
101 return 0;
102 }
103 }
104
105 return -ENOENT;
106 }
107
sensor_value_write_cb(uint16_t obj_inst_id,uint16_t res_id,uint16_t res_inst_id,uint8_t * data,uint16_t data_len,bool last_block,size_t total_size,size_t offset)108 static int sensor_value_write_cb(uint16_t obj_inst_id, uint16_t res_id,
109 uint16_t res_inst_id, uint8_t *data,
110 uint16_t data_len, bool last_block,
111 size_t total_size, size_t offset)
112 {
113 int i;
114
115 for (i = 0; i < MAX_INSTANCE_COUNT; i++) {
116 if (inst[i].obj && inst[i].obj_inst_id == obj_inst_id) {
117 /* update min / max */
118 if (sensor_value[i] < min_measured_value[i]) {
119 update_min_measured(obj_inst_id, i);
120 }
121
122 if (sensor_value[i] > max_measured_value[i]) {
123 update_max_measured(obj_inst_id, i);
124 }
125 }
126 }
127
128 return 0;
129 }
130
131 static struct lwm2m_engine_obj_inst *
pressure_sensor_create(uint16_t obj_inst_id)132 pressure_sensor_create(uint16_t obj_inst_id)
133 {
134 int index, i = 0, j = 0;
135
136 /* Check that there is no other instance with this ID */
137 for (index = 0; index < MAX_INSTANCE_COUNT; index++) {
138 if (inst[index].obj && inst[index].obj_inst_id == obj_inst_id) {
139 LOG_ERR("Can not create instance - "
140 "already existing: %u",
141 obj_inst_id);
142 return NULL;
143 }
144 }
145
146 for (index = 0; index < MAX_INSTANCE_COUNT; index++) {
147 if (!inst[index].obj) {
148 break;
149 }
150 }
151
152 if (index >= MAX_INSTANCE_COUNT) {
153 LOG_ERR("Can not create instance - no more room: %u",
154 obj_inst_id);
155 return NULL;
156 }
157
158 /* Set default values */
159 sensor_value[index] = 0;
160 units[index][0] = '\0';
161 min_measured_value[index] = INT32_MAX;
162 max_measured_value[index] = -INT32_MAX;
163 min_range_value[index] = 0;
164 max_range_value[index] = 0;
165
166 (void)memset(res[index], 0,
167 sizeof(res[index][0]) * ARRAY_SIZE(res[index]));
168 init_res_instance(res_inst[index], ARRAY_SIZE(res_inst[index]));
169
170 /* initialize instance resource data */
171 INIT_OBJ_RES(SENSOR_VALUE_RID, res[index], i, res_inst[index], j, 1,
172 false, true, &sensor_value[index], sizeof(*sensor_value),
173 NULL, NULL, NULL, sensor_value_write_cb, NULL);
174 INIT_OBJ_RES_DATA_LEN(SENSOR_UNITS_RID, res[index], i, res_inst[index], j,
175 units[index], UNIT_STR_MAX_SIZE, 0);
176 INIT_OBJ_RES_DATA(MIN_MEASURED_VALUE_RID, res[index], i,
177 res_inst[index], j, &min_measured_value[index],
178 sizeof(*min_measured_value));
179 INIT_OBJ_RES_DATA(MAX_MEASURED_VALUE_RID, res[index], i,
180 res_inst[index], j, &max_measured_value[index],
181 sizeof(*max_measured_value));
182 INIT_OBJ_RES_DATA(MIN_RANGE_VALUE_RID, res[index], i, res_inst[index],
183 j, &min_range_value[index], sizeof(*min_range_value));
184 INIT_OBJ_RES_DATA(MAX_RANGE_VALUE_RID, res[index], i, res_inst[index],
185 j, &max_range_value[index], sizeof(*max_range_value));
186 INIT_OBJ_RES_EXECUTE(RESET_MIN_MAX_MEASURED_VALUES_RID, res[index], i,
187 reset_min_max_measured_values_cb);
188 INIT_OBJ_RES_OPTDATA(CURRENT_CALIBRATION_RID, res[index], i,
189 res_inst[index], j);
190 INIT_OBJ_RES_OPTDATA(APPLICATION_TYPE_RID, res[index], i,
191 res_inst[index], j);
192 #if defined(CONFIG_LWM2M_IPSO_PRESSURE_SENSOR_VERSION_1_1)
193 INIT_OBJ_RES_OPTDATA(TIMESTAMP_RID, res[index], i, res_inst[index], j);
194 INIT_OBJ_RES_OPTDATA(FRACTIONAL_TIMESTAMP_RID, res[index], i,
195 res_inst[index], j);
196 INIT_OBJ_RES_OPTDATA(MEASUREMENT_QUALITY_INDICATOR_RID, res[index],
197 i, res_inst[index], j);
198 INIT_OBJ_RES_OPTDATA(MEASUREMENT_QUALITY_LEVEL_RID, res[index], i,
199 res_inst[index], j);
200 #endif
201
202 inst[index].resources = res[index];
203 inst[index].resource_count = i;
204 LOG_DBG("Created IPSO %s Sensor instance: %d", SENSOR_NAME,
205 obj_inst_id);
206 return &inst[index];
207 }
208
ipso_pressure_sensor_init(void)209 static int ipso_pressure_sensor_init(void)
210 {
211 sensor.obj_id = IPSO_OBJECT_ID;
212 sensor.version_major = PRESSURE_VERSION_MAJOR;
213 sensor.version_minor = PRESSURE_VERSION_MINOR;
214 sensor.is_core = false;
215 sensor.fields = fields;
216 sensor.field_count = ARRAY_SIZE(fields);
217 sensor.max_instance_count = MAX_INSTANCE_COUNT;
218 sensor.create_cb = pressure_sensor_create;
219 lwm2m_register_obj(&sensor);
220
221 return 0;
222 }
223
224 LWM2M_OBJ_INIT(ipso_pressure_sensor_init);
225
