Rod Coleman
Not Recommended for Use, but demonstrates raw API of LwIP. Needs mbed library 26
Dependencies: lwip-mbed-2010 mbed
Revision 0:dbb5ecae258f, committed 2013-08-21
- Comitter:
- RodColeman
- Date:
- Wed Aug 21 06:40:16 2013 +0000
- Commit message:
- Original, on mbed library 26
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lwip.lib Wed Aug 21 06:40:16 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/RodColeman/code/lwip-mbed-2010/#0791c1fece8e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Aug 21 06:40:16 2013 +0000
@@ -0,0 +1,200 @@
+#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);
+Serial pc(USBTX, USBRX);
+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() {
+ pc.baud(115200);
+ 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();
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Aug 21 06:40:16 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/63bcd7ba4912 \ No newline at end of file