Espressif ESP32-S2 Programming Manual page 213

Chapter 2. API Reference
Note This API can be directly used as event handler
Parameters
• [in] esp_netif: Handle to esp-netif instance
• base:
• event_id:
• data:
esp_err_t esp_netif_set_mac(esp_netif_t *esp_netif, uint8_t mac[])
Set the mac address for the interface instance.
Return
• ESP_OK - success
• ESP_ERR_ESP_NETIF_IF_NOT_READY - interface status error
• ESP_ERR_NOT_SUPPORTED - mac not supported on this interface
Parameters
• [in] esp_netif: Handle to esp-netif instance
• [in] mac: Desired mac address for the related network interface
esp_err_t esp_netif_get_mac(esp_netif_t *esp_netif, uint8_t mac[])
Get the mac address for the interface instance.
Return
• ESP_OK - success
• ESP_ERR_ESP_NETIF_IF_NOT_READY - interface status error
• ESP_ERR_NOT_SUPPORTED - mac not supported on this interface
Parameters
• [in] esp_netif: Handle to esp-netif instance
• [out] mac: Resultant mac address for the related network interface
esp_err_t esp_netif_set_hostname(esp_netif_t *esp_netif, const char *hostname)
Set the hostname of an interface.
The configured hostname overrides the default configuration value CONFIG_LWIP_LOCAL_HOSTNAME.
Please note that when the hostname is altered after interface started/connected the changes would only be
reflected once the interface restarts/reconnects
Return
• ESP_OK - success
• ESP_ERR_ESP_NETIF_IF_NOT_READY - interface status error
• ESP_ERR_ESP_NETIF_INVALID_PARAMS - parameter error
Parameters
• [in] esp_netif: Handle to esp-netif instance
• [in] hostname: New hostname for the interface. Maximum length 32 bytes.
esp_err_t esp_netif_get_hostname(esp_netif_t *esp_netif, const char **hostname)
Get interface hostname.
Return
• ESP_OK - success
• ESP_ERR_ESP_NETIF_IF_NOT_READY - interface status error
• ESP_ERR_ESP_NETIF_INVALID_PARAMS - parameter error
Parameters
• [in] esp_netif: Handle to esp-netif instance
• [out] hostname: Returns a pointer to the hostname. May be NULL if no hostname is set. If
set non-NULL, pointer remains valid (and string may change if the hostname changes).
bool esp_netif_is_netif_up(esp_netif_t *esp_netif)
Test if supplied interface is up or down.
Return
• true - Interface is up
• false - Interface is down
Parameters
• [in] esp_netif: Handle to esp-netif instance
Espressif Systems 202
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