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interwebs test program
Diff: main.cpp
- Revision:
- 0:802d313f3a83
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sat Aug 20 18:21:21 2011 +0000 @@ -0,0 +1,199 @@ +#include "mbed.h" +#include "lwip/opt.h" +#include "lwip/stats.h" +#include "lwip/sys.h" +#include "lwip/pbuf.h" +#include "lwip/udp.h" +#include "lwip/tcp.h" +#include "lwip/dns.h" +#include "lwip/dhcp.h" +#include "lwip/init.h" +#include "lwip/netif.h" +#include "netif/etharp.h" +#include "netif/loopif.h" +#include "device.h" + +Ethernet ethernet; +DigitalOut ledLink(p30); +DigitalOut ledActivity(p29); +DigitalOut ledStage0 (LED1); +DigitalOut ledStage1 (LED2); +DigitalOut ledStage2 (LED3); +DigitalOut ledTCP80 (LED4); + +volatile char stage = 0; + +Ticker stage_blinker; + +struct netif netif_data; + +const char testPage[] = "HTTP/1.1 200 OK\r\n" + "Content-Type: text/html\r\n" + "Connection: Close\r\n\r\n" + "<html>" + "<head>" + "<title>mbed test page</title>" + "<style type='text/css'>" + "body{font-family:'Arial, sans-serif', sans-serif;font-size:.8em;background-color:#fff;}" + "</style>" + "</head>" + "<body>%s</body></html>\r\n\r\n"; + +char buffer[1024]; +char temp[1024]; +err_t recv_callback(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err) { + struct netif *netif = &netif_data; + ledTCP80 = true; + printf("TCP callback from %d.%d.%d.%d\r\n", ip4_addr1(&(pcb->remote_ip)),ip4_addr2(&(pcb->remote_ip)),ip4_addr3(&(pcb->remote_ip)),ip4_addr4(&(pcb->remote_ip))); + char *data; + /* Check if status is ok and data is arrived. */ + if (err == ERR_OK && p != NULL) { + /* Inform TCP that we have taken the data. */ + tcp_recved(pcb, p->tot_len); + data = static_cast<char *>(p->payload); + /* If the data is a GET request we can handle it. */ + if (strncmp(data, "GET ", 4) == 0) { + printf("Handling GET request...\r\n"); + printf("Request:\r\n%s\r\n", data); + + //generate the test page + time_t seconds = time(NULL); + sprintf(temp, "<h1>Congratulations!</h1>If you can see this page, your mbed is working properly." + "<h2>mbed Configuration</h2>" + "mbed RTC time:%s<br/>" + "mbed HW address: %02x:%02x:%02x:%02x:%02x:%02x<br/>" + "mbed IP Address: %s<br/>", + ctime(&seconds), + (char*) netif->hwaddr[0], + (char*) netif->hwaddr[1], + (char*) netif->hwaddr[2], + (char*) netif->hwaddr[3], + (char*) netif->hwaddr[4], + (char*) netif->hwaddr[5], + inet_ntoa(*(struct in_addr*)&(netif->ip_addr)) + ); + sprintf(buffer, testPage, temp); + if (tcp_write(pcb, (void *)buffer, strlen(buffer), 1) == ERR_OK) { + tcp_output(pcb); + printf("Closing connection...\r\n"); + tcp_close(pcb); + } + } + else + { + printf("Non GET request...\r\nRequest:\r\n%s\r\n", data); + } + + pbuf_free(p); + } + + else { + /* No data arrived */ + /* That means the client closes the connection and sent us a packet with FIN flag set to 1. */ + /* We have to cleanup and destroy out TCPConnection. */ + printf("Connection closed by client.\r\n"); + pbuf_free(p); + } + /* Don't panic! Everything is fine. */ + ledTCP80 = false; + return ERR_OK; +} +/* Accept an incomming call on the registered port */ +err_t accept_callback(void *arg, struct tcp_pcb *npcb, err_t err) { + LWIP_UNUSED_ARG(arg); + /* Subscribe a receive callback function */ + tcp_recv(npcb, &recv_callback); + /* Don't panic! Everything is fine. */ + return ERR_OK; +} + +void stageblinker() +{ + switch (stage) + { + case 0: + ledStage0 = !ledStage0; + ledStage1 = false; + ledStage2 = false; + break; + case 1: + ledStage0 = true; + ledStage1 = !ledStage1; + ledStage2 = false; + break; + case 2: + ledStage0 = true; + ledStage1 = true; + ledStage2 = true; + stage_blinker.detach(); + break; + } +} + +int main() { + printf("mBed Ethernet Tester 1.0\r\nStarting Up...\r\n"); + stage = 0; + struct netif *netif = &netif_data; + struct ip_addr ipaddr; + struct ip_addr netmask; + struct ip_addr gateway; + Ticker tickFast, tickSlow, tickARP, eth_tick, dns_tick, dhcp_coarse, dhcp_fine; + stage_blinker.attach_us(&stageblinker, 1000*500); + + char *hostname = "my-mbed"; + + printf("Configuring device for DHCP...\r\n"); + /* Start Network with DHCP */ + IP4_ADDR(&netmask, 255,255,255,255); + IP4_ADDR(&gateway, 0,0,0,0); + IP4_ADDR(&ipaddr, 0,0,0,0); + /* Initialise after configuration */ + lwip_init(); + netif->hwaddr_len = ETHARP_HWADDR_LEN; + device_address((char *)netif->hwaddr); + netif = netif_add(netif, &ipaddr, &netmask, &gateway, NULL, device_init, ip_input); + netif->hostname = hostname; + netif_set_default(netif); + dhcp_start(netif); // <-- Use DHCP + + /* Initialise all needed timers */ + tickARP.attach_us( ðarp_tmr, ARP_TMR_INTERVAL * 1000); + tickFast.attach_us(&tcp_fasttmr, TCP_FAST_INTERVAL * 1000); + tickSlow.attach_us(&tcp_slowtmr, TCP_SLOW_INTERVAL * 1000); + dns_tick.attach_us(&dns_tmr, DNS_TMR_INTERVAL * 1000); + dhcp_coarse.attach_us(&dhcp_coarse_tmr, DHCP_COARSE_TIMER_MSECS * 1000); + dhcp_fine.attach_us(&dhcp_fine_tmr, DHCP_FINE_TIMER_MSECS * 1000); + stage = 1; + while (!netif_is_up(netif)) { + ledLink = ethernet.link(); + device_poll(); + } + +/* + while (!(netif->dhcp->state == DHCP_BOUND || netif->dhcp->state == DHCP_PERMANENT)) + { + ledLink = ethernet.link(); + device_poll(); + //printf("Waiting for DHCP response, state = %d\r\n", netif->dhcp->state); + //wait_ms(100); + } + */ + stage = 2; + printf("Interface is up, local IP is %s\r\n", +inet_ntoa(*(struct in_addr*)&(netif->ip_addr))); + + printf("Starting Web Server...\r\n"); + + /* Bind a function to a tcp port */ + struct tcp_pcb *pcb = tcp_new(); + if (tcp_bind(pcb, IP_ADDR_ANY, 80) == ERR_OK) { + pcb = tcp_listen(pcb); + tcp_accept(pcb, &accept_callback); + } + + printf("Waiting for connection...\r\n"); + while(1) { + device_poll(); + ledLink = ethernet.link(); + } +}