/filters:background_color(white)/2024-03/Lyra%2024%20-%20Collection1.png)
/filters:background_color(white)/2024-10/BL653µ-SA-angle.png)
/filters:background_color(white)/2024-10/BL654-Series.png)
/filters:background_color(white)/2024-10/bl654pa-both_0.png)
/filters:background_color(white)/2024-10/bl653-transparent-highres_0.png){kind=spacer}
/filters:background_color(white)/2024-10/BL652-SA-RightLabel_0.png)
/filters:background_color(white)/2024-10/LYRA-P and LYRA-S render.380.png)
Answer
The AT+PKEY nnnnnn command, used by AT Interface to configure a static passkey, is an on-the-fly command and will not be persistent through a power-cycle/reset. Only S Register settings, using the ATS & AT%S commands, can be saved using AT&W followed by ATZ. All other AT commands are on-the-fly.
NOTE: Using a static, pre-programmed, passkey makes pairing vulnerable to MITM attacks.
For additional information on configuring a static passkey with AT Interface please refer to the appropriate AT Interface User Guide for the Ezurio module you are working with linked below:
User Guide - AT Interface Application - Lyra Series