Espressif 32 and ignore_efuse_mac_crc

volkar · August 16, 2024, 12:20am

Hi,
I have one Esp32 with error CRC in MAC address, every program stops with “Base MAC address from BLK0 of EFUSE CRC error”.

Espressif has an advanced option in config for this error:

esp32:
board: adafruit_feather_esp32s3
framework:
type: esp-idf
version: recommended
# Custom sdkconfig options
sdkconfig_options:
COMPILER_OPTIMIZATION_SIZE: y
# Advanced tweaking options
advanced:
ignore_efuse_mac_crc: true

Is there a way to make Platformio accept this option?
Thanks!

maxgerhardt · August 16, 2024, 10:10am

As far as I can see, this is only used in esphome to select different codepaths at compile-time.

github.com

esphome/esphome/blob/a7167ec3bf1adaec467944586c71d442a93a68d2/esphome/core/helpers.cpp#L667-L677


      
          #if defined(CONFIG_SOC_IEEE802154_SUPPORTED) || defined(USE_ESP32_IGNORE_EFUSE_MAC_CRC)
            // When CONFIG_SOC_IEEE802154_SUPPORTED is defined, esp_efuse_mac_get_default
            // returns the 802.15.4 EUI-64 address. Read directly from eFuse instead.
            // On some devices, the MAC address that is burnt into EFuse does not
            // match the CRC that goes along with it. For those devices, this
            // work-around reads and uses the MAC address as-is from EFuse,
            // without doing the CRC check.
            esp_efuse_read_field_blob(ESP_EFUSE_MAC_FACTORY, mac, 48);
          #else
            esp_efuse_mac_get_default(mac);
          #endif

github.com

esphome/esphome/blob/a7167ec3bf1adaec467944586c71d442a93a68d2/esphome/components/wifi/wifi_component_esp_idf.cpp#L133-L138


      
          #ifdef USE_ESP32_IGNORE_EFUSE_MAC_CRC
            uint8_t mac[6];
            get_mac_address_raw(mac);
            set_mac_address(mac);
            ESP_LOGV(TAG, "Use EFuse MAC without checking CRC: %s", get_mac_address_pretty().c_str());
          #endif

So, you would have to add that code to your application.