uIP 1.0: example-mainloop-with-arp.c

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# example-mainloop-with-arp.c

    00001 #include "uip.h"
    00002 #include "uip_arp.h"
    00003 #include "network-device.h"
    00004 #include "httpd.h"
    00005 #include "timer.h"
    00006
    00007 #define BUF ((struct uip_eth_hdr *)&uip_buf[0])
    00008
    00009 /*---------------------------------------------------------------------------*/
    00010 int
    00011 main(void)
    00012 {
    00013   int i;
    00014   uip_ipaddr_t ipaddr;
    00015   struct timer periodic_timer, arp_timer;
    00016
    00017   timer_set(&periodic_timer, CLOCK_SECOND / 2);
    00018   timer_set(&arp_timer, CLOCK_SECOND * 10);
    00019
    00020   network_device_init();
    00021   uip_init();
    00022
    00023   uip_ipaddr(ipaddr, 192,168,0,2);
    00024   uip_sethostaddr(ipaddr);
    00025
    00026   httpd_init();
    00027
    00028   while(1) {
    00029     uip_len = network_device_read();
    00030     if(uip_len > 0) {
    00031       if(BUF->type == htons(UIP_ETHTYPE_IP)) {
    00032         uip_arp_ipin();
    00033         uip_input();
    00034         /* If the above function invocation resulted in data that
    00035            should be sent out on the network, the global variable
    00036            uip_len is set to a value > 0. */
    00037         if(uip_len > 0) {
    00038           uip_arp_out();
    00039           network_device_send();
    00040         }
    00041       } else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
    00042         uip_arp_arpin();
    00043         /* If the above function invocation resulted in data that
    00044            should be sent out on the network, the global variable
    00045            uip_len is set to a value > 0. */
    00046         if(uip_len > 0) {
    00047           network_device_send();
    00048         }
    00049       }
    00050
    00051     } else if(timer_expired(&periodic_timer)) {
    00052       timer_reset(&periodic_timer);
    00053       for(i = 0; i < UIP_CONNS; i++) {
    00054         uip_periodic(i);
    00055         /* If the above function invocation resulted in data that
    00056            should be sent out on the network, the global variable
    00057            uip_len is set to a value > 0. */
    00058         if(uip_len > 0) {
    00059           uip_arp_out();
    00060           network_device_send();
    00061         }
    00062       }
    00063
    00064 #if UIP_UDP
    00065       for(i = 0; i < UIP_UDP_CONNS; i++) {
    00066         uip_udp_periodic(i);
    00067         /* If the above function invocation resulted in data that
    00068            should be sent out on the network, the global variable
    00069            uip_len is set to a value > 0. */
    00070         if(uip_len > 0) {
    00071           uip_arp_out();
    00072           network_device_send();
    00073         }
    00074       }
    00075 #endif /* UIP_UDP */
    00076
    00077       /* Call the ARP timer function every 10 seconds. */
    00078       if(timer_expired(&arp_timer)) {
    00079         timer_reset(&arp_timer);
    00080         uip_arp_timer();
    00081       }
    00082     }
    00083   }
    00084   return 0;
    00085 }
    00086 /*---------------------------------------------------------------------------*/