81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
#include "ethernet_lwip.h"
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#include "Drivers/EthDrv/eth_drv_lwip.h"
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#include "cmsis_os2.h"
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#include "lwip/dhcp.h"
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#include "lwip/ip4_addr.h"
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#include "lwip/ip_addr.h"
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#include "lwip/netif.h"
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#include "lwip/tcpip.h"
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#include "standard_output/standard_output.h"
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#include <stdbool.h>
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#include <stddef.h>
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static ip4_addr_t ipaddr;
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static ip4_addr_t netmask;
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static ip4_addr_t router;
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static struct netif intf;
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err_t ethernetif_init(struct netif *netif);
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static osTimerId_t checkDhcpTmr;
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static bool prevDhcpOK = false;
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void check_dhcp_state(void *param) {
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bool dhcpOK = dhcp_supplied_address(&intf);
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if (dhcpOK != prevDhcpOK) {
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if (dhcpOK) {
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MSG("IP-address: %s\n", ipaddr_ntoa(&(netif_default->ip_addr)));
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} else {
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MSG("DHCP configuration lost!\n");
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}
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prevDhcpOK = dhcpOK;
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}
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}
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void link_chg_cb(struct netif *netif) {
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bool ls = netif_is_link_up(netif);
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MSG("ETH LINK: %s%s", (ls ? (ANSI_COLOR_BGREEN "UP ") : (ANSI_COLOR_BRED "DOWN\n")), ANSI_COLOR_RESET);
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if (ls) {
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LinkState *linkState = (LinkState *)netif->state;
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MSG("(%u Mbps, %s duplex)\n", linkState->speed, linkState->duplex ? "FULL" : "HALF");
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}
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if (ls) {
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dhcp_start(netif);
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} else {
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dhcp_stop(netif);
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}
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}
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void init_ethernet() {
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// initialize lwIP
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tcpip_init(NULL, NULL);
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// clear all associated addresses
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ip_addr_set_zero_ip4(&ipaddr);
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ip_addr_set_zero_ip4(&netmask);
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ip_addr_set_zero_ip4(&router);
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// add network interface
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netif_add(&intf,
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&ipaddr,
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&netmask,
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&router,
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NULL,
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ethernetif_init,
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tcpip_input);
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// make it default
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netif_set_default(&intf);
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// register a link change callback
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netif_set_link_callback(&intf, link_chg_cb);
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// initialize and start the DHCP-handling
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checkDhcpTmr = osTimerNew(check_dhcp_state, osTimerPeriodic, NULL, NULL);
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osTimerStart(checkDhcpTmr, 1000);
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} |