Getsemtechjoineui; Table 11-3: Getsemtechjoineui Command; Table 11-4: Getsemtechjoineui Response - Semtech LR1121 User Manual

11.2.2 GetSemtechJoinEui

Command GetSemtechJoinEui(...) reads LR1121's pre-programmed JoinEui, installed in production by Semtech.
The two LoRaWAN root keys (AppKey, NwkKey) in the device are derived from this JoinEui, amongst other numbers.
On top, in the standard use-case, the user should use SemtechJoinEui as the LoRaWAN JoinEui field to build the Join
Request frame (which itself transports the JoinEui).

Table 11-3: GetSemtechJoinEui Command

Byte
Data from Host
Data to Host

Table 11-4: GetSemtechJoinEui Response

Byte
Data from Host
Data to Host
SemtechJoinEui is coded on 8 bytes, in big endian format.
LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
0
0x01
Stat1
0
0x00 0x00
Stat1 SemtechJoinEui(63:56)
www.semtech.com
1
0x26
Stat2
1 ...
...
...
8
0x00
SemtechJoinEui(7:0)
114 of 130
Semtech
Proprietary & Confidential