diff --git a/esphome/components/wifi/wifi_component_esp_idf.cpp b/esphome/components/wifi/wifi_component_esp_idf.cpp index 6008acb95dd6..c430d160f268 100644 --- a/esphome/components/wifi/wifi_component_esp_idf.cpp +++ b/esphome/components/wifi/wifi_component_esp_idf.cpp @@ -130,11 +130,16 @@ void event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, voi } void WiFiComponent::wifi_pre_setup_() { -#ifdef USE_ESP32_IGNORE_EFUSE_MAC_CRC uint8_t mac[6]; +#ifdef USE_ESP32_IGNORE_EFUSE_MAC_CRC 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()); +#else + if (has_custom_mac_address()) { + get_mac_address_raw(mac); + set_mac_address(mac); + } #endif esp_err_t err = esp_netif_init(); if (err != ERR_OK) { diff --git a/esphome/core/helpers.cpp b/esphome/core/helpers.cpp index e75b06ccd3e5..2e99b0df7046 100644 --- a/esphome/core/helpers.cpp +++ b/esphome/core/helpers.cpp @@ -671,9 +671,17 @@ void get_mac_address_raw(uint8_t *mac) { // NOLINT(readability-non-const-parame // 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); + if (has_custom_mac_address()) { + esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM, mac, 48); + } else { + esp_efuse_read_field_blob(ESP_EFUSE_MAC_FACTORY, mac, 48); + } #else - esp_efuse_mac_get_default(mac); + if (has_custom_mac_address()) { + esp_efuse_mac_get_custom(mac); + } else { + esp_efuse_mac_get_default(mac); + } #endif #elif defined(USE_ESP8266) wifi_get_macaddr(STATION_IF, mac); @@ -685,20 +693,53 @@ void get_mac_address_raw(uint8_t *mac) { // NOLINT(readability-non-const-parame // this should be an error, but that messes with CI checks. #error No mac address method defined #endif } + std::string get_mac_address() { uint8_t mac[6]; get_mac_address_raw(mac); return str_snprintf("%02x%02x%02x%02x%02x%02x", 12, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); } + std::string get_mac_address_pretty() { uint8_t mac[6]; get_mac_address_raw(mac); return str_snprintf("%02X:%02X:%02X:%02X:%02X:%02X", 17, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); } + #ifdef USE_ESP32 void set_mac_address(uint8_t *mac) { esp_base_mac_addr_set(mac); } #endif +bool has_custom_mac_address() { +#ifdef USE_ESP32 + uint8_t mac[6]; +#if defined(CONFIG_SOC_IEEE802154_SUPPORTED) || defined(USE_ESP32_IGNORE_EFUSE_MAC_CRC) + return (esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM, mac, 48) == ESP_OK) && mac_address_is_valid(mac); +#else + return (esp_efuse_mac_get_custom(mac) == ESP_OK) && mac_address_is_valid(mac); +#endif +#else + return false; +#endif +} + +bool mac_address_is_valid(const uint8_t *mac) { + bool is_all_zeros = true; + bool is_all_ones = true; + + for (uint8_t i = 0; i < 6; i++) { + if (mac[i] != 0) { + is_all_zeros = false; + } + } + for (uint8_t i = 0; i < 6; i++) { + if (mac[i] != 0xFF) { + is_all_ones = false; + } + } + return !(is_all_zeros || is_all_ones); +} + void delay_microseconds_safe(uint32_t us) { // avoids CPU locks that could trigger WDT or affect WiFi/BT stability uint32_t start = micros(); diff --git a/esphome/core/helpers.h b/esphome/core/helpers.h index 3e6fe9433e1e..7df4b842302a 100644 --- a/esphome/core/helpers.h +++ b/esphome/core/helpers.h @@ -635,6 +635,14 @@ std::string get_mac_address_pretty(); void set_mac_address(uint8_t *mac); #endif +/// Check if a custom MAC address is set (ESP32 & variants) +/// @return True if a custom MAC address is set (ESP32 & variants), else false +bool has_custom_mac_address(); + +/// Check if the MAC address is not all zeros or all ones +/// @return True if MAC is valid, else false +bool mac_address_is_valid(const uint8_t *mac); + /// Delay for the given amount of microseconds, possibly yielding to other processes during the wait. void delay_microseconds_safe(uint32_t us);