Zephyr use custom MAC (BLK3)

[ilanganor]

Hello

I am using the ESP32C3

I would like to use API "esp_efuse_mac_get_custom", since I need to use the MAC address programmed in BLK3 for BLE

as done here: https://github.com/espressif/esp-idf/bl ... ple_main.c

using this API:
esp_efuse_mac_get_custom

however in Zephyr OS this API is not supported

can you suggest a way to read BLK3 register using Zephyr OS ?