LoRaMacCryptoNvm.h File Reference

LoRa MAC layer cryptographic NVM data. More...

#include <stdint.h>
#include "utilities.h"
#include "LoRaMacTypes.h"

Go to the source code of this file.

Data Structures
struct	FCntList_t
struct	LoRaMacCryptoNvmData_t

Detailed Description

LoRa MAC layer cryptographic NVM data.

Copyright

Revised BSD License, see section License.

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(C)2013-2017 Semtech
 
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embedded.connectivity.solutions===============

Author

Miguel Luis ( Semtech )

Daniel Jaeckle ( STACKFORCE )

addtogroup LORAMAC

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Data Structure Documentation

FCntList_t

struct FCntList_t

LoRaWAN Frame counter list.

Data Fields
uint32_t	FCntUp	Uplink frame counter which is incremented with each uplink.
uint32_t	NFCntDown	Network downlink frame counter which is incremented with each downlink on FPort 0 or when the FPort field is missing.
uint32_t	AFCntDown	Application downlink frame counter which is incremented with each downlink on a port different than 0.
uint32_t	FCntDown	In case if the device is connected to a LoRaWAN 1.0 Server, this counter is used for every kind of downlink frame.
uint32_t	McFCntDown[LORAMAC_MAX_MC_CTX]	Multicast downlink counters
uint16_t	RJcount1	RJcount1 is a counter incremented with every Rejoin request Type 1 frame transmitted.

LoRaMacCryptoNvmData_t

struct LoRaMacCryptoNvmData_t

LoRaMac Crypto Non Volatile Context structure

Data Fields
Version_t	LrWanVersion	Stores the information if the device is connected to a LoRaWAN network server with prior to 1.1.0 implementation.
uint16_t	DevNonce	Device nonce is a counter starting at 0 when the device is initially powered up and incremented with every JoinRequest.
uint32_t	JoinNonce	JoinNonce is a device specific counter value (that never repeats itself) provided by the join server and incremented with every JoinAccept message.
FCntList_t	FCntList	Frame counter list
uint32_t	LastDownFCnt	LastDownFCnt stores the information which frame counter was used to decrypt the last frame. This information is needed to compute ConfFCnt in B1 block for the MIC.
uint32_t	Crc32	CRC32 value of the Crypto data structure.