LWM2M OS layer

Modules
	LwM2M OS DFU image types.
	LwM2M OS download events

Data Structures
struct	lwm2m_os_sms_deliver_address
struct	lwm2m_os_sms_udh_app_port
struct	lwm2m_os_sms_deliver_header
union	lwm2m_os_sms_header
struct	lwm2m_os_sms_data
	SMS PDU data. More...
struct	lwm2m_os_download_evt
	Download client event. More...
struct	lwm2m_os_download_cfg
	Download client configuration options. More...
struct	lwm2m_os_dfu_header

Macros
#define	LWM2M_OS_MAX_WORK_QS   2
	Maximum number of work queues that the system must support.
#define	LWM2M_OS_MAX_TIMER_COUNT   (4 + (LWM2M_OS_MAX_WORK_QS * 4))
	Maximum number of timers that the system must support.
#define	LWM2M_OS_MAX_SEM_COUNT   (6 + (LWM2M_OS_MAX_WORK_QS * 1))
	Maximum number of semaphores that the system must support.
#define	LWM2M_OS_LTE_MODE_NONE   -1
#define	LWM2M_OS_LTE_MODE_CAT_M1   6
#define	LWM2M_OS_LTE_MODE_CAT_NB1   7
#define	LWM2M_OS_STORAGE_BASE   0xCA00
	Range of the non-volatile storage identifiers used by the library.
#define	LWM2M_OS_STORAGE_END   0xCAFF
#define	LWM2M_OS_DFU_HEADER_MAGIC   0x424ad2dc
#define	LWM2M_OS_DFU_HEADER_MAGIC_LEN   sizeof(uint32_t)
#define	LWM2M_OS_DFU_HEADER_LEN   (LWM2M_OS_DFU_HEADER_MAGIC_LEN + sizeof(struct lwm2m_os_dfu_header))

Typedefs
typedef int	lwm2m_os_work_q_t
typedef int	lwm2m_os_timer_t
typedef int	lwm2m_os_sem_t
typedef void(*	lwm2m_os_at_handler_callback_t) (const char *notif)
	AT command error handler callback function.
typedef void(*	lwm2m_os_timer_handler_t) (lwm2m_os_timer_t *timer)
	Timer callback function.
typedef void(*	lwm2m_os_sms_callback_t) (struct lwm2m_os_sms_data *const data, void *context)
	SMS subscriber callback function.
typedef int(*	lwm2m_os_download_callback_t) (const struct lwm2m_os_download_evt *event)
	Download client asynchronous event handler.
typedef void(*	lwm2m_os_pdn_event_handler_t) (uint8_t cid, enum lwm2m_os_pdn_event event, int reason)
	PDN event handler.

Enumerations
enum	lwm2m_os_pdn_fam { LWM2M_OS_PDN_FAM_IPV4 , LWM2M_OS_PDN_FAM_IPV6 , LWM2M_OS_PDN_FAM_IPV4V6 , LWM2M_OS_PDN_FAM_NONIP }
	PDN family. More...
enum	lwm2m_os_pdn_event {   LWM2M_OS_PDN_EVENT_CNEC_ESM , LWM2M_OS_PDN_EVENT_ACTIVATED , LWM2M_OS_PDN_EVENT_DEACTIVATED , LWM2M_OS_PDN_EVENT_IPV6_UP ,   LWM2M_OS_PDN_EVENT_IPV6_DOWN , LWM2M_OS_PDN_EVENT_NETWORK_DETACHED }
	PDN event. More...

Functions
int	lwm2m_os_pdn_ctx_create (uint8_t *cid, lwm2m_os_pdn_event_handler_t cb)
	Create a Packet Data Protocol (PDP) context.
int	lwm2m_os_pdn_ctx_configure (uint8_t cid, const char *apn, enum lwm2m_os_pdn_fam family)
	Configure a Packet Data Protocol context.
int	lwm2m_os_pdn_ctx_destroy (uint8_t cid)
	Destroy a Packet Data Protocol context.
int	lwm2m_os_pdn_activate (uint8_t cid, int *esm, enum lwm2m_os_pdn_fam *family)
	Activate a Packet Data Network (PDN) connection.
int	lwm2m_os_pdn_deactivate (uint8_t cid)
	Deactivate a Packet Data Network (PDN) connection.
int	lwm2m_os_pdn_id_get (uint8_t cid)
	Retrieve the PDN ID for a given PDP Context.
int	lwm2m_os_pdn_default_callback_set (lwm2m_os_pdn_event_handler_t cb)
	Set a callback for events pertaining to the default PDP context (zero).
void *	lwm2m_os_malloc (size_t size)
	Allocate memory.
void	lwm2m_os_free (void *ptr)
	Free memory.
int	lwm2m_os_sem_init (lwm2m_os_sem_t **sem, unsigned int initial_count, unsigned int limit)
	Initialize a semaphore.
int	lwm2m_os_sem_take (lwm2m_os_sem_t *sem, int timeout)
	Take a semaphore.
void	lwm2m_os_sem_give (lwm2m_os_sem_t *sem)
	Give a semaphore.
void	lwm2m_os_sem_reset (lwm2m_os_sem_t *sem)
	Reset a semaphore.
int64_t	lwm2m_os_uptime_get (void)
	Get uptime, in milliseconds.
int64_t	lwm2m_os_uptime_delta (int64_t *ref)
	Get uptime delta, in milliseconds.
int	lwm2m_os_sleep (int ms)
	Put a thread to a sleep.
void	lwm2m_os_sys_reset (void)
	Reboot system.
uint32_t	lwm2m_os_rand_get (void)
	Get a random value.
int	lwm2m_os_storage_delete (uint16_t id)
	Delete a non-volatile storage entry.
int	lwm2m_os_storage_read (uint16_t id, void *data, size_t len)
	Read an entry from non-volatile storage.
int	lwm2m_os_storage_write (uint16_t id, const void *data, size_t len)
	Write an entry to non-volatile storage.
lwm2m_os_work_q_t *	lwm2m_os_work_q_start (int index, const char *name)
	Start a workqueue.
void	lwm2m_os_timer_get (lwm2m_os_timer_handler_t handler, lwm2m_os_timer_t **timer)
	Reserve a timer task from the OS.
void	lwm2m_os_timer_release (lwm2m_os_timer_t *timer)
	Release a timer task.
int	lwm2m_os_timer_start (lwm2m_os_timer_t *timer, int64_t delay)
	Start a timer on system work queue.
int	lwm2m_os_timer_start_on_q (lwm2m_os_work_q_t *work_q, lwm2m_os_timer_t *timer, int64_t delay)
	Start a timer on a specific queue.
void	lwm2m_os_timer_cancel (lwm2m_os_timer_t *timer, bool sync)
	Cancel a timer run.
int64_t	lwm2m_os_timer_remaining (lwm2m_os_timer_t *timer)
	Obtain the time remaining on a timer.
bool	lwm2m_os_timer_is_pending (lwm2m_os_timer_t *timer)
	Check if a timer task is pending.
int	lwm2m_os_at_init (lwm2m_os_at_handler_callback_t callback)
	Initialize AT command driver.
int	lwm2m_os_sms_client_register (lwm2m_os_sms_callback_t lib_callback, void *context)
	Register as an SMS client/listener.
void	lwm2m_os_sms_client_deregister (int handle)
	degister as an SMS client/listener.
int	lwm2m_os_download_get (const char *host, const struct lwm2m_os_download_cfg *cfg, size_t from)
	Establish a connection with the server and download a file.
int	lwm2m_os_download_disconnect (void)
	Disconnect from the server.
int	lwm2m_os_download_init (lwm2m_os_download_callback_t lib_callback)
	Initialize the download client.
int	lwm2m_os_download_file_size_get (size_t *size)
	Retrieve size of file being downloaded.
size_t	lwm2m_os_lte_modes_get (int32_t *modes)
	get enabled system modes from modem.
void	lwm2m_os_lte_mode_request (int32_t prefer)
	set preferred bearer in modem.
int	lwm2m_os_nrf_errno (void)
	Translate the error number.
int	lwm2m_os_dfu_img_type (const void *const buf, size_t len, struct lwm2m_os_dfu_header **header)
	Find the image type for the buffer of bytes received.
int	lwm2m_os_dfu_start (int img_type, size_t max_file_size, bool crc_validate)
	Start a firmware upgrade.
int	lwm2m_os_dfu_fragment (const char *buf, size_t len, uint32_t crc32)
	Receive a firmware image fragment and validate its CRC if required.
int	lwm2m_os_dfu_done (bool successful, uint32_t crc32)
	Finalize the current firmware upgrade and CRC-validate the image if required.
int	lwm2m_os_dfu_pause (void)
	Pause the DFU process and release the resources temporarily.
int	lwm2m_os_dfu_schedule_update (void)
	Schedule update for uploaded image.
void	lwm2m_os_dfu_reset (void)
	Reset the current DFU target.
bool	lwm2m_os_dfu_application_update_validate (void)
	Validate the application image update.

Detailed Description