esp-idf/examples/system/base_mac_address/main/Kconfig.projbuild

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menu "Example Configuration"
choice BASE_MAC_ADDRESS_STORAGE
prompt "Storage location of the base MAC address"
default BASE_MAC_STORED_EFUSE_BLK0
help
Select the storage location of the base MAC addresses.
1. eFuse BLK0: The "Default (Espressif factory)" selection. The
default base MAC address is written to words 1 and 2 of eFuse block
0 when the chip was manufactured. Call esp_efuse_mac_get_default()
read retrieve the "eFuse BLK0" MAC address.
2. eFuse BLK3: A custom base MAC address is burned by the user into
eFuse word 0 of block 3. Call esp_efuse_mac_get_custom() to read
the "eFuse BLK3" MAC address.
3. Other External Storage: Selecting this option will cause the
example to call external_storage_mac_get() which is defined in this
example to simply return a MAC address preset in software. Users
should modify this function to access their desired storage mediums
(e.g. flash, EEPROM etc).
config BASE_MAC_STORED_EFUSE_BLK0
bool "Default (Espressif factory) eFuse BLK0"
config BASE_MAC_STORED_EFUSE_BLK3
bool "Custom eFuse BLK3"
config BASE_MAC_STORED_OTHER_EXTERNAL_STORAGE
bool "Other external storage"
endchoice
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choice BASE_MAC_STORED_EFUSE_BLK3_ERROR_BEHAV
prompt "Behavior when retrieving eFuse BLK3 fails"
depends on BASE_MAC_STORED_EFUSE_BLK3
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default BASE_MAC_STORED_EFUSE_BLK3_ERROR_DEFAULT
help
Select the behavior when reading base MAC address "eFuse BLK3" fails
(i.e. the retrieved result is all 0).
- If "Abort" is selected, the ESP32 will abort.
- If "Use the default base MAC address from BLK0 of eFuse" is
selected, the default "eFuse BLK0" will be used instead.
config BASE_MAC_STORED_EFUSE_BLK3_ERROR_ABORT
bool "Abort"
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config BASE_MAC_STORED_EFUSE_BLK3_ERROR_DEFAULT
bool "Use the default base MAC address eFuse BLK0"
endchoice
endmenu