main.cpp

00001 /* mbed Ethernet class demo
00002  * Copyright (c) 2009 rmeyer
00003  * Released under the MIT License: http://mbed.org/license/mit
00004  */
00005 
00006 #include "mbed.h"
00007 #include "hexview.h"
00008 
00009 DigitalOut led(LED4);
00010 Ethernet eth;
00011 
00012 unsigned short htons(unsigned short n) {               // Host short to network shor
00013   return ((n & 0xff) << 8) | ((n & 0xff00) >> 8);      // Byte swapping
00014 }
00015 
00016 void show(char *buf, int size) {
00017     printf("ETH:  Src:  %02hX:%02hX:%02hX:%02hX:%02hX:%02hX  ",
00018             buf[6], buf[7], buf[8], buf[9], buf[10], buf[11]);
00019     printf("Dst:  %02hX:%02hX:%02hX:%02hX:%02hX:%02hX   ",
00020             buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
00021   
00022     unsigned int type = (buf[12] << 8) | (buf[13]);
00023     printf("Type: %hd\n", htons( type));
00024     
00025     hexview2(buf, size);
00026 }
00027 
00028 
00029 int main() {
00030     char buffer[0x300];
00031     int size = 0;
00032     
00033     while(1) {
00034         if((size = eth.receive()) != 0) {
00035             eth.read(buffer, size);
00036             show(buffer, size);
00037         }
00038         
00039         led = !led;
00040         wait(0.2);
00041     }
00042 }