Joe Danlloh
/
lwip
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lwip
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mbed unsupported
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main.cpp
00001 #include "lwip/opt.h" 00002 #include "lwip/stats.h" 00003 #include "lwip/sys.h" 00004 #include "lwip/pbuf.h" 00005 #include "lwip/udp.h" 00006 #include "lwip/tcp.h" 00007 #include "lwip/dns.h" 00008 #include "lwip/dhcp.h" 00009 #include "lwip/init.h" 00010 #include "lwip/netif.h" 00011 #include "netif/etharp.h" 00012 #include "netif/loopif.h" 00013 #include "device.h" 00014 00015 #include "mbed.h" 00016 00017 /* Some Lights */ 00018 DigitalOut led1(LED1); 00019 DigitalOut led2(LED2); 00020 int x = 0; 00021 00022 /* Struct with hold the Ethernet Data */ 00023 struct netif netif_data; 00024 00025 /* Two static html pages ready for serving, includeing http header */ 00026 const char *page[] = { 00027 "HTTP/1.1 200 OK\r\n" 00028 "Server:mbed embedded\r\n" 00029 "Content-Type: text/html\r\n" 00030 "Content-Length: 190\r\n" 00031 "\r\n" 00032 "<html>\r\n" 00033 " <header>\r\n" 00034 " <title>Whats up?<title>\r\n" 00035 " </header>\r\n" 00036 " <body>\r\n" 00037 " <h1>Hello World!!11elf</h1>\r\n" 00038 " <p>Have a greate day.</p>\r\n" 00039 " <a href=\"/1.html\">turn </a>\r\n" 00040 " </body>\r\n" 00041 "</html>\r\n" 00042 "\r\n" 00043 , 00044 "HTTP/1.1 200 OK\r\n" 00045 "Server:mbed embedded\r\n" 00046 "Content-Type: text/html\r\n" 00047 "Content-Length: 178\r\n" 00048 "\r\n" 00049 "<html>\r\n" 00050 " <header>\r\n" 00051 " <title>LED Power<title>\r\n" 00052 " </header>\r\n" 00053 " <body>\r\n" 00054 " <h1>Lets rotate!!11elf</h1>\r\n" 00055 " <p>Bam!!!!!!!!!!.</p>\r\n" 00056 " <a href=\"/\">back</a>\r\n" 00057 " </body>\r\n" 00058 "</html>\r\n" 00059 "\r\n" 00060 }; 00061 00062 /* Every time called if a packet is received for a */ 00063 /* TCPConnection which registerd this Callback. */ 00064 err_t recv_callback(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err) { 00065 int i; 00066 char *data; 00067 00068 /* Check if status is ok and data is arrived. */ 00069 if (err == ERR_OK && p != NULL) { 00070 /* Inform TCP that we have taken the data. */ 00071 tcp_recved(pcb, p->tot_len); 00072 data = static_cast<char *>(p->payload); 00073 00074 /* If the data is a GET request we can handle it. */ 00075 if (strncmp(data, "GET ", 4) == 0) { 00076 for (i = 0; i < 40; i++) { 00077 if (((char *)data + 4)[i] == ' ' || 00078 ((char *)data + 4)[i] == '\r' || 00079 ((char *)data + 4)[i] == '\n') { 00080 ((char *)data + 4)[i] = 0; 00081 } 00082 } 00083 00084 /* Check the URL */ 00085 /* We only know two URLs /1.html and default */ 00086 /* store the URL information in our global x variable to change twinkle behaviour. */ 00087 x = (strncmp((char *)(data + 4), "/1.html", 7) == 0)? 1: 0; 00088 /* Clean up the Memory */ 00089 pbuf_free(p); 00090 00091 /* Send the right page as answere. */ 00092 if (tcp_write(pcb, (void *)page[x], strlen(page[x]), 1) != ERR_OK) { 00093 //error("Could not write", 0); 00094 } 00095 } else { 00096 /* No data arrived */ 00097 /* That means the client closes the connection and sent us a packet with FIN flag set to 1. */ 00098 /* We have to cleanup and destroy out TCPConnection. */ 00099 pbuf_free(p); 00100 } 00101 } 00102 00103 /* Don't panic! Everything is fine. */ 00104 return ERR_OK; 00105 } 00106 00107 /* Accept an incomming call on the registered port */ 00108 err_t accept_callback(void *arg, struct tcp_pcb *npcb, err_t err) { 00109 LWIP_UNUSED_ARG(arg); 00110 /* Subscribe a receive callback function */ 00111 tcp_recv(npcb, &recv_callback); 00112 00113 /* Don't panic! Everything is fine. */ 00114 return ERR_OK; 00115 } 00116 00117 int main(void) { 00118 /* Create and initialise variables */ 00119 struct netif *netif = &netif_data; 00120 struct ip_addr ipaddr; 00121 struct ip_addr netmask; 00122 struct ip_addr gateway; 00123 00124 Ticker tickFast, tickSlow, tickARP, eth_tick, dns_tick, dhcp_coarse, dhcp_fine; 00125 char *hostname = "mbed-c3p0"; 00126 x = 0; 00127 00128 /* Start Network with DHCP */ 00129 IP4_ADDR(&netmask, 255,255,255,255); 00130 IP4_ADDR(&gateway, 0,0,0,0); 00131 IP4_ADDR(&ipaddr, 0,0,0,0); 00132 00133 /* Initialise after configuration */ 00134 lwip_init(); 00135 00136 netif->hwaddr_len = ETHARP_HWADDR_LEN; 00137 device_address((char *)netif->hwaddr); 00138 00139 netif = netif_add(netif, &ipaddr, &netmask, &gateway, NULL, device_init, ip_input); 00140 netif->hostname = hostname; 00141 netif_set_default(netif); 00142 dhcp_start(netif); // <-- Use DHCP 00143 00144 /* Initialise all needed timers */ 00145 tickARP.attach_us( ðarp_tmr, ARP_TMR_INTERVAL * 1000); 00146 tickFast.attach_us(&tcp_fasttmr, TCP_FAST_INTERVAL * 1000); 00147 tickSlow.attach_us(&tcp_slowtmr, TCP_SLOW_INTERVAL * 1000); 00148 dns_tick.attach_us(&dns_tmr, DNS_TMR_INTERVAL * 1000); 00149 dhcp_coarse.attach_us(&dhcp_coarse_tmr, DHCP_COARSE_TIMER_MSECS * 1000); 00150 dhcp_fine.attach_us(&dhcp_fine_tmr, DHCP_FINE_TIMER_MSECS * 1000); 00151 00152 /* Bind a function to a tcp port */ 00153 struct tcp_pcb *pcb = tcp_new(); 00154 if (tcp_bind(pcb, IP_ADDR_ANY, 80) == ERR_OK) { 00155 pcb = tcp_listen(pcb); 00156 tcp_accept(pcb, &accept_callback); 00157 } 00158 00159 /* Give the signal that we are ready */ 00160 printf("entering while loop\n"); 00161 while(1) { 00162 device_poll(); 00163 if (x) { 00164 led1 = !led1; 00165 wait(0.2); 00166 } else { 00167 led2 = !led2; 00168 wait(0.2); 00169 } 00170 } 00171 } 00172
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