/*
* Copyright (c) 2019 Foundries.io
*
* SPDX-License-Identifier: Apache-2.0
*/
/*
* Source material for IPSO On/Off Switch object (3347):
* http://www.openmobilealliance.org/tech/profiles/lwm2m/3347.xml
*/
#define LOG_MODULE_NAME net_ipso_button
#define LOG_LEVEL CONFIG_LWM2M_LOG_LEVEL
#include <logging/log.h>
LOG_MODULE_REGISTER(LOG_MODULE_NAME);
#include <stdint.h>
#include <init.h>
#include "lwm2m_object.h"
#include "lwm2m_engine.h"
/* resource IDs */
#define BUTTON_DIGITAL_STATE_ID 5500
#define BUTTON_DIGITAL_INPUT_COUNTER_ID 5501
#define BUTTON_APPLICATION_TYPE_ID 5750
#define BUTTON_MAX_ID 3
#define MAX_INSTANCE_COUNT CONFIG_LWM2M_IPSO_PUSH_BUTTON_INSTANCE_COUNT
/*
* Calculate resource instances as follows:
* start with BUTTON_MAX_ID
*/
#define RESOURCE_INSTANCE_COUNT (BUTTON_MAX_ID)
/* resource state */
struct ipso_button_data {
u64_t counter;
u16_t obj_inst_id;
bool last_state;
bool state;
};
static struct ipso_button_data button_data[MAX_INSTANCE_COUNT];
static struct lwm2m_engine_obj onoff_switch;
static struct lwm2m_engine_obj_field fields[] = {
OBJ_FIELD_DATA(BUTTON_DIGITAL_STATE_ID, R, BOOL),
OBJ_FIELD_DATA(BUTTON_DIGITAL_INPUT_COUNTER_ID, R_OPT, U64),
OBJ_FIELD_DATA(BUTTON_APPLICATION_TYPE_ID, RW_OPT, STRING),
};
static struct lwm2m_engine_obj_inst inst[MAX_INSTANCE_COUNT];
static struct lwm2m_engine_res res[MAX_INSTANCE_COUNT][BUTTON_MAX_ID];
static struct lwm2m_engine_res_inst
res_inst[MAX_INSTANCE_COUNT][RESOURCE_INSTANCE_COUNT];
static int get_button_index(u16_t obj_inst_id)
{
int i, ret = -ENOENT;
for (i = 0; i < ARRAY_SIZE(inst); i++) {
if (!inst[i].obj || inst[i].obj_inst_id != obj_inst_id) {
continue;
}
ret = i;
break;
}
return ret;
}
static int state_post_write_cb(u16_t obj_inst_id,
u16_t res_id, u16_t res_inst_id,
u8_t *data, u16_t data_len,
bool last_block, size_t total_size)
{
int i;
i = get_button_index(obj_inst_id);
if (i < 0) {
return i;
}
if (button_data[i].state && !button_data[i].last_state) {
/* off to on transition */
button_data[i].counter++;
}
button_data[i].last_state = button_data[i].state;
return 0;
}
static struct lwm2m_engine_obj_inst *button_create(u16_t obj_inst_id)
{
int index, avail = -1, i = 0, j = 0;
/* Check that there is no other instance with this ID */
for (index = 0; index < ARRAY_SIZE(inst); index++) {
if (inst[index].obj && inst[index].obj_inst_id == obj_inst_id) {
LOG_ERR("Can not create instance - "
"already existing: %u", obj_inst_id);
return NULL;
}
/* Save first available slot index */
if (avail < 0 && !inst[index].obj) {
avail = index;
}
}
if (avail < 0) {
LOG_ERR("Can not create instance - no more room: %u",
obj_inst_id);
return NULL;
}
/* Set default values */
(void)memset(&button_data[avail], 0, sizeof(button_data[avail]));
button_data[avail].obj_inst_id = obj_inst_id;
(void)memset(res[avail], 0,
sizeof(res[avail][0]) * ARRAY_SIZE(res[avail]));
init_res_instance(res_inst[avail], ARRAY_SIZE(res_inst[avail]));
/* initialize instance resource data */
INIT_OBJ_RES(BUTTON_DIGITAL_STATE_ID, res[avail], i,
res_inst[avail], j, 1, true,
&button_data[avail].state,
sizeof(button_data[avail].state),
NULL, NULL, state_post_write_cb, NULL);
INIT_OBJ_RES_DATA(BUTTON_DIGITAL_INPUT_COUNTER_ID, res[avail], i,
res_inst[avail], j,
&button_data[avail].counter,
sizeof(button_data[avail].counter));
INIT_OBJ_RES_OPTDATA(BUTTON_APPLICATION_TYPE_ID, res[avail], i,
res_inst[avail], j);
inst[avail].resources = res[avail];
inst[avail].resource_count = i;
LOG_DBG("Create IPSO Button instance: %d", obj_inst_id);
return &inst[avail];
}
static int ipso_button_init(struct device *dev)
{
onoff_switch.obj_id = IPSO_OBJECT_PUSH_BUTTON_ID;
onoff_switch.fields = fields;
onoff_switch.field_count = ARRAY_SIZE(fields);
onoff_switch.max_instance_count = ARRAY_SIZE(inst);
onoff_switch.create_cb = button_create;
lwm2m_register_obj(&onoff_switch);
return 0;
}
SYS_INIT(ipso_button_init, APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);