How to save LoRa key context into the flash

WisBlock
1

RAK117220

  • What firmware are you using? (RUI3 or Arduino BSP or other IDE (e.g. STM32CubeIDE)?
    RUI3

  • What firmware version? Can it be obtained with AT+VER=?
    RUI3 V4.1.1

  • Computer OS? (MacOS, Linux, Windows)
    Windows

  • What Computer OS version?
    Windos 10 pro

I have 600 devices that eventually have power outages uniformly.
so that everything starts at the same time.

I need to save Lora key context session keys, params received with the JoinAccept frame, and params that are modified in run time like the frame counter that is used to avoid reply attacks from another device.

i have a few seconds before it shut Down

2

RUI3 does not support this.
You might need to write your own application based on Ambiq Apollo3 SDK.