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Ethernet Interface

Table of Contents

  1. Examples

Beta

This page refers to libraries available in the beta mode using the new collaboration system. To see and make use of them, see details on the latest betamode

Network Interfaces

  1. Ethernet Interface
  2. VodafoneK3770 Interface

First of all you have to connect your mbed to a RJ45 jack: Ethernet RJ45.

Import libraryEthernetInterface

mbed IP library over Ethernet

Last commit 11 May 2016 by mbed official

Examples

Import program
TCPSocket_HelloWorld - main.cpp

00001 #include "mbed.h"
00002 #include "EthernetInterface.h"
00003 
00004 int main() {
00005     EthernetInterface eth;
00006     eth.init(); //Use DHCP
00007     eth.connect();
00008     printf("IP Address is %s\n", eth.getIPAddress());
00009     
00010     TCPSocketConnection sock;
00011     sock.connect("mbed.org", 80);
00012     
00013     char http_cmd[] = "GET /media/uploads/mbed_official/hello.txt HTTP/1.0\n\n";
00014     sock.send_all(http_cmd, sizeof(http_cmd)-1);
00015     
00016     char buffer[300];
00017     int ret;
00018     while (true) {
00019         ret = sock.receive(buffer, sizeof(buffer)-1);
00020         if (ret <= 0)
00021             break;
00022         buffer[ret] = '\0';
00023         printf("Received %d chars from server:\n%s\n", ret, buffer);
00024     }
00025       
00026     sock.close();
00027     
00028     eth.disconnect();
00029     
00030     while(1) {}
00031 }

Import program
UDPSocket_HelloWorld - main.cpp

00001 #include "mbed.h"
00002 #include "EthernetInterface.h"
00003  
00004 int main() {
00005     EthernetInterface eth;
00006     eth.init(); //Use DHCP
00007     eth.connect();
00008     
00009     UDPSocket sock;
00010     sock.init();
00011     
00012     Endpoint nist;
00013     nist.set_address("utcnist.colorado.edu", 37);
00014     
00015     char out_buffer[] = "plop"; // Does not matter
00016     sock.sendTo(nist, out_buffer, sizeof(out_buffer));
00017     
00018     char in_buffer[4];
00019     int n = sock.receiveFrom(nist, in_buffer, sizeof(in_buffer));
00020     
00021     unsigned int timeRes = ntohl( *((unsigned int*)in_buffer));
00022     printf("Received %d bytes from server %s on port %d: %u seconds since 1/01/1900 00:00 GMT\n", n, nist.get_address(), nist.get_port(), timeRes);
00023     
00024     sock.close();
00025     
00026     eth.disconnect();
00027     while(1) {}
00028 }
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