OMA LWM2M object TLV encoder and decoder API

OMA LWM2M object TLV encoder and decoder API. More...

Functions
uint32_t	lwm2m_tlv_server_decode (lwm2m_server_t *p_server, uint8_t *p_buffer, uint32_t buffer_len)
	Decode a LWM2M server object from a TLV byte buffer. More...
uint32_t	lwm2m_tlv_server_encode (uint8_t *p_buffer, uint32_t *p_buffer_len, lwm2m_server_t *p_server)
	Encode a LWM2M server object to a TLV byte buffer. More...
uint32_t	lwm2m_tlv_security_decode (lwm2m_security_t *p_security, uint8_t *p_buffer, uint32_t buffer_len)
	Decode a LWM2M security object from a TLV byte buffer. More...
uint32_t	lwm2m_tlv_security_encode (uint8_t *p_buffer, uint32_t *p_buffer_len, lwm2m_security_t *p_security)
	Encode a LWM2M security object to a TLV byte buffer. More...

Detailed Description

OMA LWM2M object TLV encoder and decoder API.

Function Documentation

uint32_t lwm2m_tlv_security_decode	(	lwm2m_security_t *	p_security,
		uint8_t *	p_buffer,
		uint32_t	buffer_len
	)

Decode a LWM2M security object from a TLV byte buffer.

Note

Resource values NOT found in the tlv will not be altered.

Warning

lwm2m_string_t and lwm2m_opaque_t values will point to the byte buffer and needs to be copied by the application before the byte buffer is freed.

Parameters

[out]	p_security	Pointer to a LWM2M server object to be filled by the decoded TLVs.
[in]	p_buffer	Pointer to the TLV byte buffer to be decoded.
[in]	buffer_len	Size of the buffer to be decoded.

Return values

NRF_SUCCESS

If decoding was successfull.

uint32_t lwm2m_tlv_security_encode	(	uint8_t *	p_buffer,
		uint32_t *	p_buffer_len,
		lwm2m_security_t *	p_security
	)

Encode a LWM2M security object to a TLV byte buffer.

Parameters

[out]	p_buffer	Pointer to a byte buffer to be used to fill the encoded TLVs.
[in,out]	p_buffer_len	Value by reference inicating the size of the buffer provided. Will return the number of used bytes on return.
[in]	p_security	Pointer to the LWM2M security object to be encoded into TLVs.

Return values

NRF_SUCCESS

If the encoded was successfull.

uint32_t lwm2m_tlv_server_decode	(	lwm2m_server_t *	p_server,
		uint8_t *	p_buffer,
		uint32_t	buffer_len
	)

Decode a LWM2M server object from a TLV byte buffer.

Note

Resource values NOT found in the tlv will not be altered.

Warning

lwm2m_string_t and lwm2m_opaque_t values will point to the byte buffer and needs to be copied by the application before the byte buffer is freed.

Parameters

[out]	p_server	Pointer to a LWM2M server object to be filled by the decoded TLVs.
[in]	p_buffer	Pointer to the TLV byte buffer to be decoded.
[in]	buffer_len	Size of the buffer to be decoded.

Return values

NRF_SUCCESS

If decoding was successfull.

uint32_t lwm2m_tlv_server_encode	(	uint8_t *	p_buffer,
		uint32_t *	p_buffer_len,
		lwm2m_server_t *	p_server
	)

Encode a LWM2M server object to a TLV byte buffer.

Parameters

[out]	p_buffer	Pointer to a byte buffer to be used to fill the encoded TLVs.
[in,out]	p_buffer_len	Value by reference indicating the size of the buffer provided. Will return the number of used bytes on return.
[in]	p_server	Pointer to the LWM2M server object to be encoded into TLVs.

Return values

NRF_SUCCESS

If the encoded was successfull.