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net: lwm2m: add IPSO Accelerometer object support

This IPSO object can be used to represent a 1-3 axis accelerometer.

Signed-off-by: Michael Scott <mike@foundries.io>
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mike-scott authored and jukkar committed Jul 29, 2019
1 parent 3e7d374 commit 3d3af7114eb0f6e477da8a62f4ef3360295bb6a0
@@ -51,6 +51,7 @@

#define IPSO_OBJECT_TEMP_SENSOR_ID 3303
#define IPSO_OBJECT_LIGHT_CONTROL_ID 3311
#define IPSO_OBJECT_ACCELEROMETER_ID 3313
#define IPSO_OBJECT_BUZZER_ID 3338
#define IPSO_OBJECT_TIMER_ID 3340
#define IPSO_OBJECT_ONOFF_SWITCH_ID 3342
@@ -45,6 +45,9 @@ zephyr_library_sources_ifdef(CONFIG_LWM2M_IPSO_TEMP_SENSOR
zephyr_library_sources_ifdef(CONFIG_LWM2M_IPSO_LIGHT_CONTROL
ipso_light_control.c
)
zephyr_library_sources_ifdef(CONFIG_LWM2M_IPSO_ACCELEROMETER
ipso_accelerometer.c
)
zephyr_library_sources_ifdef(CONFIG_LWM2M_IPSO_BUZZER
ipso_buzzer.c
)
@@ -43,6 +43,19 @@ config LWM2M_IPSO_LIGHT_CONTROL_INSTANCE_COUNT
This setting establishes the total count of IPSO Light Control
instances available to the LWM2M client.

config LWM2M_IPSO_ACCELEROMETER
bool "IPSO Accelerometer Support"
help
This Object is used to used to represent a 1-3 axis accelerometer.

config LWM2M_IPSO_ACCELEROMETER_INSTANCE_COUNT
int "Maximum # of IPSO Accelerometer object instances"
default 1
depends on LWM2M_IPSO_ACCELEROMETER
help
This setting establishes the total count of IPSO Accelerometer
instances available to the LWM2M client.

config LWM2M_IPSO_BUZZER
bool "IPSO Buzzer Support"
help
@@ -0,0 +1,140 @@
/*
* Copyright (c) 2019 Foundries.io
*
* SPDX-License-Identifier: Apache-2.0
*/

/*
* Source material for IPSO Accelerometer object (3313):
* http://www.openmobilealliance.org/tech/profiles/lwm2m/3313.xml
*/

#define LOG_MODULE_NAME net_ipso_accel
#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"

/* Server resource IDs */
#define ACCEL_X_VALUE_ID 5702
#define ACCEL_Y_VALUE_ID 5703
#define ACCEL_Z_VALUE_ID 5704
#define ACCEL_SENSOR_UNITS_ID 5701
#define ACCEL_MIN_RANGE_VALUE_ID 5603
#define ACCEL_MAX_RANGE_VALUE_ID 5604

#define ACCEL_MAX_ID 6

#define MAX_INSTANCE_COUNT CONFIG_LWM2M_IPSO_ACCELEROMETER_INSTANCE_COUNT

/*
* Calculate resource instances as follows:
* start with ACCEL_MAX_ID
*/
#define RESOURCE_INSTANCE_COUNT (ACCEL_MAX_ID)

/* resource state */
struct ipso_accel_data {
float32_value_t x_value;
float32_value_t y_value;
float32_value_t z_value;
float32_value_t min_range;
float32_value_t max_range;
};

static struct ipso_accel_data accel_data[MAX_INSTANCE_COUNT];

static struct lwm2m_engine_obj accel;
static struct lwm2m_engine_obj_field fields[] = {
OBJ_FIELD_DATA(ACCEL_X_VALUE_ID, R, FLOAT32),
OBJ_FIELD_DATA(ACCEL_Y_VALUE_ID, R_OPT, FLOAT32),
OBJ_FIELD_DATA(ACCEL_Z_VALUE_ID, R_OPT, FLOAT32),
OBJ_FIELD_DATA(ACCEL_SENSOR_UNITS_ID, R_OPT, STRING),
OBJ_FIELD_DATA(ACCEL_MIN_RANGE_VALUE_ID, R_OPT, FLOAT32),
OBJ_FIELD_DATA(ACCEL_MAX_RANGE_VALUE_ID, R_OPT, FLOAT32),
};

static struct lwm2m_engine_obj_inst inst[MAX_INSTANCE_COUNT];
static struct lwm2m_engine_res res[MAX_INSTANCE_COUNT][ACCEL_MAX_ID];
static struct lwm2m_engine_res_inst
res_inst[MAX_INSTANCE_COUNT][RESOURCE_INSTANCE_COUNT];

static struct lwm2m_engine_obj_inst *accel_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(&accel_data[avail], 0, sizeof(accel_data[avail]));

(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_DATA(ACCEL_X_VALUE_ID, res[avail], i, res_inst[avail], j,
&accel_data[avail].x_value,
sizeof(accel_data[avail].x_value));
INIT_OBJ_RES_DATA(ACCEL_Y_VALUE_ID, res[avail], i, res_inst[avail], j,
&accel_data[avail].y_value,
sizeof(accel_data[avail].y_value));
INIT_OBJ_RES_DATA(ACCEL_Z_VALUE_ID, res[avail], i, res_inst[avail], j,
&accel_data[avail].z_value,
sizeof(accel_data[avail].z_value));
INIT_OBJ_RES_OPTDATA(ACCEL_SENSOR_UNITS_ID, res[avail], i,
res_inst[avail], j);
INIT_OBJ_RES_DATA(ACCEL_MIN_RANGE_VALUE_ID, res[avail], i,
res_inst[avail], j,
&accel_data[avail].min_range,
sizeof(accel_data[avail].min_range));
INIT_OBJ_RES_DATA(ACCEL_MAX_RANGE_VALUE_ID, res[avail], i,
res_inst[avail], j,
&accel_data[avail].max_range,
sizeof(accel_data[avail].max_range));

inst[avail].resources = res[avail];
inst[avail].resource_count = i;

LOG_DBG("Create IPSO Accelerometer instance: %d", obj_inst_id);

return &inst[avail];
}

static int ipso_accel_init(struct device *dev)
{
accel.obj_id = IPSO_OBJECT_ACCELEROMETER_ID;
accel.fields = fields;
accel.field_count = ARRAY_SIZE(fields);
accel.max_instance_count = ARRAY_SIZE(inst);
accel.create_cb = accel_create;
lwm2m_register_obj(&accel);

return 0;
}

SYS_INIT(ipso_accel_init, APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);

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