222 lines
6.8 KiB
C
222 lines
6.8 KiB
C
/*
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* Copyright (c) 2017 Linaro Limited
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* Copyright (c) 2018-2019 Foundries.io
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* Copyright (c) 2020 Laird Connectivity
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define LOG_MODULE_NAME net_ipso_humidity_sensor
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#define LOG_LEVEL CONFIG_LWM2M_LOG_LEVEL
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(LOG_MODULE_NAME);
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#include <stdint.h>
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#include <zephyr/init.h>
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#include "lwm2m_object.h"
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#include "lwm2m_engine.h"
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#include "lwm2m_resource_ids.h"
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#define HUMIDITY_VERSION_MAJOR 1
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#if defined(CONFIG_LWM2M_IPSO_HUMIDITY_SENSOR_VERSION_1_1)
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#define HUMIDITY_VERSION_MINOR 1
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#define NUMBER_OF_OBJ_FIELDS 12
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#else
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#define HUMIDITY_VERSION_MINOR 0
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#define NUMBER_OF_OBJ_FIELDS 7
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#endif /* defined(CONFIG_LWM2M_IPSO_HUMIDITY_SENSOR_VERSION_1_1) */
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#define MAX_INSTANCE_COUNT CONFIG_LWM2M_IPSO_HUMIDITY_SENSOR_INSTANCE_COUNT
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#define IPSO_OBJECT_ID IPSO_OBJECT_HUMIDITY_SENSOR_ID
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#define SENSOR_NAME "Humidity"
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#define UNIT_STR_MAX_SIZE 8
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/*
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* Calculate resource instances as follows:
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* start with NUMBER_OF_OBJ_FIELDS
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* subtract EXEC resources (1)
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*/
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#define RESOURCE_INSTANCE_COUNT (NUMBER_OF_OBJ_FIELDS - 1)
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/* resource state variables */
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static double sensor_value[MAX_INSTANCE_COUNT];
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static char units[MAX_INSTANCE_COUNT][UNIT_STR_MAX_SIZE];
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static double min_measured_value[MAX_INSTANCE_COUNT];
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static double max_measured_value[MAX_INSTANCE_COUNT];
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static double min_range_value[MAX_INSTANCE_COUNT];
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static double max_range_value[MAX_INSTANCE_COUNT];
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static struct lwm2m_engine_obj sensor;
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static struct lwm2m_engine_obj_field fields[] = {
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OBJ_FIELD_DATA(SENSOR_VALUE_RID, R, FLOAT),
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OBJ_FIELD_DATA(SENSOR_UNITS_RID, R_OPT, STRING),
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OBJ_FIELD_DATA(MIN_MEASURED_VALUE_RID, R_OPT, FLOAT),
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OBJ_FIELD_DATA(MAX_MEASURED_VALUE_RID, R_OPT, FLOAT),
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OBJ_FIELD_DATA(MIN_RANGE_VALUE_RID, R_OPT, FLOAT),
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OBJ_FIELD_DATA(MAX_RANGE_VALUE_RID, R_OPT, FLOAT),
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OBJ_FIELD_EXECUTE_OPT(RESET_MIN_MAX_MEASURED_VALUES_RID),
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#if defined(CONFIG_LWM2M_IPSO_HUMIDITY_SENSOR_VERSION_1_1)
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OBJ_FIELD_DATA(APPLICATION_TYPE_RID, RW_OPT, STRING),
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OBJ_FIELD_DATA(TIMESTAMP_RID, R_OPT, TIME),
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OBJ_FIELD_DATA(FRACTIONAL_TIMESTAMP_RID, R_OPT, FLOAT),
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OBJ_FIELD_DATA(MEASUREMENT_QUALITY_INDICATOR_RID, R_OPT, U8),
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OBJ_FIELD_DATA(MEASUREMENT_QUALITY_LEVEL_RID, R_OPT, U8),
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#endif
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};
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static struct lwm2m_engine_obj_inst inst[MAX_INSTANCE_COUNT];
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static struct lwm2m_engine_res res[MAX_INSTANCE_COUNT][NUMBER_OF_OBJ_FIELDS];
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static struct lwm2m_engine_res_inst res_inst[MAX_INSTANCE_COUNT]
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[RESOURCE_INSTANCE_COUNT];
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static void update_min_measured(uint16_t obj_inst_id, int index)
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{
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min_measured_value[index] = sensor_value[index];
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lwm2m_notify_observer(IPSO_OBJECT_ID, obj_inst_id, MIN_MEASURED_VALUE_RID);
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}
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static void update_max_measured(uint16_t obj_inst_id, int index)
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{
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max_measured_value[index] = sensor_value[index];
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lwm2m_notify_observer(IPSO_OBJECT_ID, obj_inst_id, MAX_MEASURED_VALUE_RID);
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}
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static int reset_min_max_measured_values_cb(uint16_t obj_inst_id,
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uint8_t *args, uint16_t args_len)
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{
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int i;
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LOG_DBG("RESET MIN/MAX %d", obj_inst_id);
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for (i = 0; i < MAX_INSTANCE_COUNT; i++) {
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if (inst[i].obj && inst[i].obj_inst_id == obj_inst_id) {
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update_min_measured(obj_inst_id, i);
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update_max_measured(obj_inst_id, i);
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return 0;
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}
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}
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return -ENOENT;
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}
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static int sensor_value_write_cb(uint16_t obj_inst_id, uint16_t res_id,
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uint16_t res_inst_id, uint8_t *data,
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uint16_t data_len, bool last_block,
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size_t total_size)
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{
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int i;
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for (i = 0; i < MAX_INSTANCE_COUNT; i++) {
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if (inst[i].obj && inst[i].obj_inst_id == obj_inst_id) {
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/* update min / max */
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if (sensor_value[i] < min_measured_value[i]) {
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update_min_measured(obj_inst_id, i);
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}
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if (sensor_value[i] > max_measured_value[i]) {
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update_max_measured(obj_inst_id, i);
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}
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}
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}
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return 0;
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}
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static struct lwm2m_engine_obj_inst *
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humidity_sensor_create(uint16_t obj_inst_id)
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{
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int index, i = 0, j = 0;
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/* Check that there is no other instance with this ID */
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for (index = 0; index < MAX_INSTANCE_COUNT; index++) {
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if (inst[index].obj && inst[index].obj_inst_id == obj_inst_id) {
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LOG_ERR("Can not create instance - "
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"already existing: %u",
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obj_inst_id);
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return NULL;
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}
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}
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for (index = 0; index < MAX_INSTANCE_COUNT; index++) {
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if (!inst[index].obj) {
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break;
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}
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}
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if (index >= MAX_INSTANCE_COUNT) {
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LOG_ERR("Can not create instance - no more room: %u",
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obj_inst_id);
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return NULL;
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}
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/* Set default values */
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sensor_value[index] = 0;
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units[index][0] = '\0';
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min_measured_value[index] = INT32_MAX;
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max_measured_value[index] = -INT32_MAX;
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min_range_value[index] = 0;
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max_range_value[index] = 0;
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(void)memset(res[index], 0,
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sizeof(res[index][0]) * ARRAY_SIZE(res[index]));
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init_res_instance(res_inst[index], ARRAY_SIZE(res_inst[index]));
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/* initialize instance resource data */
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INIT_OBJ_RES(SENSOR_VALUE_RID, res[index], i, res_inst[index], j, 1,
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false, true, &sensor_value[index], sizeof(*sensor_value),
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NULL, NULL, NULL, sensor_value_write_cb, NULL);
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INIT_OBJ_RES_DATA_LEN(SENSOR_UNITS_RID, res[index], i, res_inst[index], j,
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units[index], UNIT_STR_MAX_SIZE, 0);
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INIT_OBJ_RES_DATA(MIN_MEASURED_VALUE_RID, res[index], i,
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res_inst[index], j, &min_measured_value[index],
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sizeof(*min_measured_value));
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INIT_OBJ_RES_DATA(MAX_MEASURED_VALUE_RID, res[index], i,
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res_inst[index], j, &max_measured_value[index],
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sizeof(*max_measured_value));
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INIT_OBJ_RES_DATA(MIN_RANGE_VALUE_RID, res[index], i, res_inst[index],
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j, &min_range_value[index], sizeof(*min_range_value));
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INIT_OBJ_RES_DATA(MAX_RANGE_VALUE_RID, res[index], i, res_inst[index],
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j, &max_range_value[index], sizeof(*max_range_value));
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INIT_OBJ_RES_EXECUTE(RESET_MIN_MAX_MEASURED_VALUES_RID, res[index], i,
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reset_min_max_measured_values_cb);
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#if defined(CONFIG_LWM2M_IPSO_HUMIDITY_SENSOR_VERSION_1_1)
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INIT_OBJ_RES_OPTDATA(APPLICATION_TYPE_RID, res[index], i,
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res_inst[index], j);
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INIT_OBJ_RES_OPTDATA(TIMESTAMP_RID, res[index], i, res_inst[index], j);
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INIT_OBJ_RES_OPTDATA(FRACTIONAL_TIMESTAMP_RID, res[index], i,
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res_inst[index], j);
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INIT_OBJ_RES_OPTDATA(MEASUREMENT_QUALITY_INDICATOR_RID, res[index],
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i, res_inst[index], j);
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INIT_OBJ_RES_OPTDATA(MEASUREMENT_QUALITY_LEVEL_RID, res[index], i,
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res_inst[index], j);
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#endif
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inst[index].resources = res[index];
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inst[index].resource_count = i;
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LOG_DBG("Created IPSO %s Sensor instance: %d", SENSOR_NAME,
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obj_inst_id);
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return &inst[index];
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}
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static int ipso_humidity_sensor_init(void)
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{
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sensor.obj_id = IPSO_OBJECT_ID;
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sensor.version_major = HUMIDITY_VERSION_MAJOR;
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sensor.version_minor = HUMIDITY_VERSION_MINOR;
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sensor.is_core = false;
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sensor.fields = fields;
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sensor.field_count = ARRAY_SIZE(fields);
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sensor.max_instance_count = MAX_INSTANCE_COUNT;
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sensor.create_cb = humidity_sensor_create;
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lwm2m_register_obj(&sensor);
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return 0;
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}
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LWM2M_OBJ_INIT(ipso_humidity_sensor_init);
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