lorawan_hdr_t Struct Reference

Data type to represent a LoRaWAN packet header. More...

Detailed Description

Data type to represent a LoRaWAN packet header.

     This definition includes MHDR and FHDR in the same structure.
     The structure of the header is as follows:

                     1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
|Mtype| RFU |Maj|           LoRaWAN Address                   ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
...             | Frame Control |         Frame Counter         |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

See also

LoRaWAN spcefication, section 4

Definition at line 71 of file hdr.h.

#include <hdr.h>

Data Fields
uint8_t	mt_maj
	message type and major version More...
le_uint32_t	addr
	32 bit LoRaWAN address
uint8_t	fctrl
	frame control
le_uint16_t	fcnt
	frame counter

Field Documentation

mt_maj

uint8_t lorawan_hdr_t::mt_maj

message type and major version

The message type are the 3 most significant bytes and the major version are the 2 less significant bytes. There are 3 bytes in the middle reserved for future usage. This module provides helper functions to set and get:

• lorawan_hdr_set_mtype()
• lorawan_hdr_get_mtype()
• lorawan_hdr_set_maj()
• lorawan_hdr_get_maj()

Definition at line 84 of file hdr.h.

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The documentation for this struct was generated from the following file:

• sys/include/net/lorawan/hdr.h