waterlevel-software/documentation/old.md

extern "C" { #include "lwip/netif.h" }

void listNetworkInterfaces() { esp_netif_t *netif = NULL; Serial.println("\n=== Listing Network Interfaces ===");

for (netif = esp_netif_next(NULL); netif != NULL; netif = esp_netif_next(netif)) { const char* if_key = esp_netif_get_ifkey(netif); const char* if_desc = esp_netif_get_desc(netif);

  Serial.printf("Interface Key: %s\n", if_key);
  Serial.printf("Description  : %s\n", if_desc);
  Serial.println("-----------------------------");

} }

void setEthernetAsDefault() { Logger.log(0, ELOG_LEVEL_DEBUG, "+++++++++++++++++++++++++++++++++++++++++++++++++++++++++"); listNetworkInterfaces(); // Attempt to locate the Ethernet network interface. // (The name may vary—on some systems it might be "eth0") esp_netif_t* netif = esp_netif_get_handle_from_ifkey("ETH_DEF");

if (netif) { Serial.println("Netif handle obtained successfully."); } else { Serial.println("Failed to obtain netif handle."); } struct netif *eth_netif2 = netif_find("ETH_DEF"); if (netif) { netif_set_default(eth_netif2); Logger.log(0, ELOG_LEVEL_DEBUG, "Ethernet set as default network interface."); } else { Logger.log(0, ELOG_LEVEL_DEBUG, "Could not find Ethernet netif."); } }