DHCP

Overview

Macros
#define	LWIP_DHCP   0
#define	DHCP_DOES_ARP_CHECK   (LWIP_DHCP && LWIP_ARP)
#define	LWIP_DHCP_BOOTP_FILE   0
#define	LWIP_DHCP_GET_NTP_SRV   0
#define	LWIP_DHCP_MAX_NTP_SERVERS   1
#define	LWIP_DHCP_MAX_DNS_SERVERS   DNS_MAX_SERVERS

Macro Definition Documentation

#define LWIP_DHCP   0

LWIP_DHCP==1: Enable DHCP module.

#define DHCP_DOES_ARP_CHECK   (LWIP_DHCP && LWIP_ARP)

DHCP_DOES_ARP_CHECK==1: Do an ARP check on the offered address.

#define LWIP_DHCP_BOOTP_FILE   0

LWIP_DHCP_BOOTP_FILE==1: Store offered_si_addr and boot_file_name.

#define LWIP_DHCP_GET_NTP_SRV   0

LWIP_DHCP_GETS_NTP==1: Request NTP servers with discover/select. For each response packet, an callback is called, which has to be provided by the port: void dhcp_set_ntp_servers(u8_t num_ntp_servers, ip_addr_t* ntp_server_addrs);

#define LWIP_DHCP_MAX_NTP_SERVERS   1

The maximum of NTP servers requested

#define LWIP_DHCP_MAX_DNS_SERVERS   DNS_MAX_SERVERS

LWIP_DHCP_MAX_DNS_SERVERS > 0: Request DNS servers with discover/select. DNS servers received in the response are passed to DNS via dns_setserver() (up to the maximum limit defined here).