| /* |
| * Copyright (c) 2017 Linaro Limited |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /* |
| * Source material for IPSO Temperature Sensor object (3303): |
| * https://github.com/IPSO-Alliance/pub/blob/master/docs/IPSO-Smart-Objects.pdf |
| * Section: "10. IPSO Object: Temperature" |
| */ |
| |
| #define SYS_LOG_DOMAIN "ipso_temp_sensor" |
| #define SYS_LOG_LEVEL CONFIG_SYS_LOG_LWM2M_LEVEL |
| #include <logging/sys_log.h> |
| #include <stdint.h> |
| #include <init.h> |
| #include <net/lwm2m.h> |
| |
| #include "lwm2m_object.h" |
| #include "lwm2m_engine.h" |
| |
| /* Server resource IDs */ |
| #define TEMP_SENSOR_VALUE_ID 5700 |
| #define TEMP_UNITS_ID 5701 |
| #define TEMP_MIN_MEASURED_VALUE_ID 5601 |
| #define TEMP_MAX_MEASURED_VALUE_ID 5602 |
| #define TEMP_MIN_RANGE_VALUE_ID 5603 |
| #define TEMP_MAX_RANGE_VALUE_ID 5604 |
| #define TEMP_RESET_MIN_MAX_MEASURED_VALUES_ID 5605 |
| |
| #define TEMP_MAX_ID 7 |
| |
| #define MAX_INSTANCE_COUNT CONFIG_LWM2M_IPSO_TEMP_SENSOR_INSTANCE_COUNT |
| |
| #define TEMP_STRING_SHORT 8 |
| |
| /* resource state variables */ |
| static float32_value_t sensor_value[MAX_INSTANCE_COUNT]; |
| static char units[MAX_INSTANCE_COUNT][TEMP_STRING_SHORT]; |
| static float32_value_t min_measured_value[MAX_INSTANCE_COUNT]; |
| static float32_value_t max_measured_value[MAX_INSTANCE_COUNT]; |
| static float32_value_t min_range_value[MAX_INSTANCE_COUNT]; |
| static float32_value_t max_range_value[MAX_INSTANCE_COUNT]; |
| |
| static struct lwm2m_engine_obj temp_sensor; |
| static struct lwm2m_engine_obj_field fields[] = { |
| OBJ_FIELD_DATA(TEMP_SENSOR_VALUE_ID, R, FLOAT32), |
| OBJ_FIELD_DATA(TEMP_UNITS_ID, R, STRING), |
| OBJ_FIELD_DATA(TEMP_MIN_MEASURED_VALUE_ID, R, FLOAT32), |
| OBJ_FIELD_DATA(TEMP_MAX_MEASURED_VALUE_ID, R, FLOAT32), |
| OBJ_FIELD_DATA(TEMP_MIN_RANGE_VALUE_ID, R, FLOAT32), |
| OBJ_FIELD_DATA(TEMP_MAX_RANGE_VALUE_ID, R, FLOAT32), |
| OBJ_FIELD_EXECUTE(TEMP_RESET_MIN_MAX_MEASURED_VALUES_ID), |
| }; |
| |
| static struct lwm2m_engine_obj_inst inst[MAX_INSTANCE_COUNT]; |
| static struct lwm2m_engine_res_inst res[MAX_INSTANCE_COUNT][TEMP_MAX_ID]; |
| |
| static int reset_min_max_measured_values_cb(u16_t obj_inst_id) |
| { |
| int i; |
| |
| SYS_LOG_DBG("RESET MIN/MAX %d", obj_inst_id); |
| for (i = 0; i < MAX_INSTANCE_COUNT; i++) { |
| if (inst[i].obj && inst[i].obj_inst_id == obj_inst_id) { |
| min_measured_value[i].val1 = 0; |
| min_measured_value[i].val2 = 0; |
| max_measured_value[i].val1 = 0; |
| max_measured_value[i].val2 = 0; |
| return 0; |
| } |
| } |
| |
| return -ENOENT; |
| } |
| |
| static int sensor_value_write_cb(u16_t obj_inst_id, |
| u8_t *data, u16_t data_len, |
| bool last_block, size_t total_size) |
| { |
| int i; |
| bool update_min = false; |
| bool update_max = false; |
| |
| for (i = 0; i < MAX_INSTANCE_COUNT; i++) { |
| if (inst[i].obj && inst[i].obj_inst_id == obj_inst_id) { |
| /* update min / max */ |
| if (sensor_value[i].val1 < min_measured_value[i].val1) { |
| update_min = true; |
| } else if (sensor_value[i].val1 == |
| min_measured_value[i].val1 && |
| sensor_value[i].val2 < |
| min_measured_value[i].val2) { |
| update_min = true; |
| } |
| |
| if (sensor_value[i].val1 > min_measured_value[i].val1) { |
| update_max = true; |
| } else if (sensor_value[i].val1 == |
| min_measured_value[i].val1 && |
| sensor_value[i].val2 > |
| min_measured_value[i].val2) { |
| update_max = true; |
| } |
| |
| if (update_min) { |
| min_measured_value[i].val1 = |
| sensor_value[i].val1; |
| min_measured_value[i].val2 = |
| sensor_value[i].val2; |
| NOTIFY_OBSERVER(IPSO_OBJECT_TEMP_SENSOR_ID, |
| obj_inst_id, |
| TEMP_MIN_MEASURED_VALUE_ID); |
| } |
| |
| if (update_max) { |
| max_measured_value[i].val1 = |
| sensor_value[i].val1; |
| max_measured_value[i].val2 = |
| sensor_value[i].val2; |
| NOTIFY_OBSERVER(IPSO_OBJECT_TEMP_SENSOR_ID, |
| obj_inst_id, |
| TEMP_MAX_MEASURED_VALUE_ID); |
| } |
| } |
| } |
| |
| return 1; |
| } |
| |
| static struct lwm2m_engine_obj_inst *temp_sensor_create(u16_t obj_inst_id) |
| { |
| int index, i = 0; |
| |
| /* Check that there is no other instance with this ID */ |
| for (index = 0; index < MAX_INSTANCE_COUNT; index++) { |
| if (inst[index].obj && inst[index].obj_inst_id == obj_inst_id) { |
| SYS_LOG_ERR("Can not create instance - " |
| "already existing: %u", obj_inst_id); |
| return NULL; |
| } |
| } |
| |
| for (index = 0; index < MAX_INSTANCE_COUNT; index++) { |
| if (!inst[index].obj) { |
| break; |
| } |
| } |
| |
| if (index >= MAX_INSTANCE_COUNT) { |
| SYS_LOG_ERR("Can not create instance - " |
| "no more room: %u", obj_inst_id); |
| return NULL; |
| } |
| |
| /* Set default values */ |
| sensor_value[index].val1 = 0; |
| sensor_value[index].val2 = 0; |
| units[index][0] = '\0'; |
| min_measured_value[index].val1 = 0; |
| min_measured_value[index].val2 = 0; |
| max_measured_value[index].val1 = 0; |
| max_measured_value[index].val2 = 0; |
| min_range_value[index].val1 = 0; |
| min_range_value[index].val2 = 0; |
| max_range_value[index].val1 = 0; |
| max_range_value[index].val2 = 0; |
| |
| /* initialize instance resource data */ |
| INIT_OBJ_RES(res[index], i, TEMP_SENSOR_VALUE_ID, 0, |
| &sensor_value[index], sizeof(*sensor_value), |
| NULL, NULL, sensor_value_write_cb, NULL); |
| INIT_OBJ_RES_DATA(res[index], i, TEMP_UNITS_ID, |
| units[index], TEMP_STRING_SHORT); |
| INIT_OBJ_RES_DATA(res[index], i, TEMP_MIN_MEASURED_VALUE_ID, |
| &min_measured_value[index], |
| sizeof(*min_measured_value)); |
| INIT_OBJ_RES_DATA(res[index], i, TEMP_MAX_MEASURED_VALUE_ID, |
| &max_measured_value[index], |
| sizeof(*max_measured_value)); |
| INIT_OBJ_RES_DATA(res[index], i, TEMP_MIN_RANGE_VALUE_ID, |
| &min_range_value[index], |
| sizeof(*min_range_value)); |
| INIT_OBJ_RES_DATA(res[index], i, TEMP_MAX_RANGE_VALUE_ID, |
| &max_range_value[index], |
| sizeof(*max_range_value)); |
| INIT_OBJ_RES_EXECUTE(res[index], i, |
| TEMP_RESET_MIN_MAX_MEASURED_VALUES_ID, |
| reset_min_max_measured_values_cb); |
| |
| inst[index].resources = res[index]; |
| inst[index].resource_count = i; |
| SYS_LOG_DBG("Create IPSO Temperature Sensor instance: %d", |
| obj_inst_id); |
| return &inst[index]; |
| } |
| |
| static int ipso_temp_sensor_init(struct device *dev) |
| { |
| int ret = 0; |
| |
| /* Set default values */ |
| memset(inst, 0, sizeof(*inst) * MAX_INSTANCE_COUNT); |
| memset(res, 0, sizeof(struct lwm2m_engine_res_inst) * |
| MAX_INSTANCE_COUNT * TEMP_MAX_ID); |
| |
| temp_sensor.obj_id = IPSO_OBJECT_TEMP_SENSOR_ID; |
| temp_sensor.fields = fields; |
| temp_sensor.field_count = sizeof(fields) / sizeof(*fields); |
| temp_sensor.max_instance_count = MAX_INSTANCE_COUNT; |
| temp_sensor.create_cb = temp_sensor_create; |
| lwm2m_register_obj(&temp_sensor); |
| |
| return ret; |
| } |
| |
| SYS_INIT(ipso_temp_sensor_init, APPLICATION, |
| CONFIG_KERNEL_INIT_PRIORITY_DEFAULT); |