Espressif Systems ESP - Page 143

Chapter 4. Software framework
4.10.5 [LWIP] With ESP-IDF v4.1, how to congure ESP32’s IP address when it is in
SoftAP mode?
Since ESP-IDF v4.1 and later versions do not have TCP/IP interfaces anymore, it is recommended to
use the ESP-NETIF interface instead.
Code example：
{
...
esp_netif_t *ap_netif = esp_netif_create_default_wifi_ap();
char* ip= "192.168.5.241";
char* gateway = "192.168.5.1";
char* netmask = "255.255.255.0";
esp_netif_ip_info_t info_t;
memset(&info_t, 0, sizeof(esp_netif_ip_info_t));
if (ap_netif)
{
ESP_ERROR_CHECK(esp_netif_dhcps_stop(ap_netif));
info_t.ip.addr = esp_ip4addr_aton((const char *)ip);
info_t.netmask.addr = esp_ip4addr_aton((const char *)netmask);
info_t.gw.addr = esp_ip4addr_aton((const char *)gateway);
esp_netif_set_ip_info(ap_netif, &info_t);
ESP_ERROR_CHECK(esp_netif_dhcps_start(ap_netif));
}
...
}
4.10.6 [LWIP] How to congure ESP32’s static IP when it is in Station mode？
Since ESP-IDF v4.2 and later versions do not have tcp/ip interfaces anymore, it is recommended to use
the ESP-NETIF interface instead. The code example is as follows：
esp_netif_t *sta_netif = esp_netif_create_default_wifi_sta();
if (sta_netif)
{
esp_netif_ip_info_t info_t = {0};
esp_netif_dhcpc_stop(sta_netif);
info_t.ip.addr = ESP_IP4TOADDR(192, 168, 3, 23);
info_t.gw.addr = ESP_IP4TOADDR(192, 168, 3, 1);
info_t.netmask.addr = ESP_IP4TOADDR(255, 255, 255, 0);
esp_netif_set_ip_info(sta_netif, &info_t);
}
esp_netif_dns_info_t dns_info = {0};
4.10.7 [LWIP] How to congure the Option contents of DHCP Server in ESP-IDF?
Since ESP-IDF v4.1 and later versions do not have TCP/IP interfaces anymore, it is recommended to use
the ESP-NETIF interface instead. You can also refer to this example when dealing with DHCP Client
con󰝘guration. The code example is as follows:
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