device_object.h File Reference

Default implementation of the LwM2M Device Object (/3). More...

#include <anj/init.h>
#include <anj/core.h>
#include <anj/dm/core.h>

Go to the source code of this file.

Data Structures
struct	anj_dm_device_object_init_t
struct	anj_dm_device_obj_t

Typedefs
typedef void	anj_dm_reboot_callback_t(void *arg, anj_t *anj)

Functions
int	anj_dm_device_obj_install (anj_t *anj, anj_dm_device_obj_t *device_obj, const anj_dm_device_object_init_t *obj_init)

Detailed Description

Default implementation of the LwM2M Device Object (/3).

Provides installation and basic metadata resources such as manufacturer, model, serial number, firmware version, and reboot handling.

Typedef Documentation

anj_dm_reboot_callback_t

typedef void anj_dm_reboot_callback_t(void *arg, anj_t *anj)

Callback function type for handling the Reboot Resource (/3/0/4).

This function is invoked when the Reboot Resource is executed by the LwM2M server. The user is expected to perform a system reboot after this callback returns.

Warning

The Execute operation is a Confirmable CoAP request, so the LwM2M server expects an acknowledgement. It's recommended to delay the reboot until the response is successfully sent by the client.

Parameters

arg	Opaque argument passed to the callback, as provided in anj_dm_device_object_init_t::reboot_cb_arg.
anj	Anjay object.

Function Documentation

anj_dm_device_obj_install()

int anj_dm_device_obj_install	(	anj_t *	anj,
		anj_dm_device_obj_t *	device_obj,
		const anj_dm_device_object_init_t *	obj_init
	)

Installs Device Object (/3) in data model.

Example usage:

static int reboot_cb(void *arg, anj_t *anj) {
    // perform reboot
}
 
// ...
 
anj_dm_device_obj_t dev_obj;
static const anj_dm_device_object_init_t dev_obj_init = {
    .manufacturer = "manufacturer",
    .model_number = "model_number",
    .serial_number = "serial_number",
    .firmware_version = "firmware_version",
    .reboot_handler = reboot_cb
};
anj_dm_device_obj_install(&anj, &dev_obj, &dev_obj_init);

Parameters

anj	Anjay object.
device_obj	Pointer to a variable that will hold the state of the Object.
obj_init	Pointer to Object's initialization structure.

Returns

0 on success, a non-zero value in case of an error.