File content as of revision 5:5fc4ca9fbf17:

#include "mbed.h"
#include  "phy.h"
#include  "tcp.h"
#include "dhcp.h"
#include  "arp.h"

int NetIpToString(uint32_t ip, char* text)
{
    int a0 = (ip & 0xFF000000) >> 24;
    int a1 = (ip & 0x00FF0000) >> 16;
    int a2 = (ip & 0x0000FF00) >>  8;
    int a3 = (ip & 0x000000FF);
    return sprintf(text, "%d.%d.%d.%d", a0, a1, a2, a3); 
}
int NetMacToString(char* mac, char* text)
{
    return sprintf(text, "%02X:%02X:%02X:%02X:%02X:%02X", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
}

int16_t NetToHost16(int16_t n)
{
    int16_t h;
    
    char* pn = (char*)&n;
    char* ph = (char*)&h + 1;
    
    *ph = *pn; ph--; pn++; // 1<-0
    *ph = *pn;             // 0<-1

    return h;
}

int32_t NetToHost32(int32_t n)
{
    int32_t h;
    
    char* pn = (char*)&n;
    char* ph = (char*)&h + 3;
    
    *ph = *pn; ph--; pn++; // 3<-0
    *ph = *pn; ph--; pn++; // 2<-1
    *ph = *pn; ph--; pn++; // 1<-2
    *ph = *pn;             // 0<-3

    return h;
}
int64_t NetToHost64(int64_t n)
{
    int64_t h;
    
    char* pn = (char*)&n;
    char* ph = (char*)&h + 7;
    
    *ph = *pn; ph--; pn++; // 7<-0
    *ph = *pn; ph--; pn++; // 6<-1
    *ph = *pn; ph--; pn++; // 5<-2
    *ph = *pn; ph--; pn++; // 4<-3
    *ph = *pn; ph--; pn++; // 3<-4
    *ph = *pn; ph--; pn++; // 2<-5
    *ph = *pn; ph--; pn++; // 1<-6
    *ph = *pn;             // 0<-7

    return h;
}
uint16_t onesComplement(uint16_t start, int count, void* pData)
{    
    uint32_t sum = start;                               //Initialise the 32 bit accumulator with the last sum
    uint16_t* p = (uint16_t*)pData;                     //Set up a 16 bit pointer for the data
    
    while(count > 1)
    {
        sum += *p++;                                    // Add each pair of bytes into 32 bit accumulator
        count -= 2;
    }
    if(count) sum += * (uint8_t*) p;                    // Add left-over byte, if any
    while (sum>>16) sum = (sum & 0xffff) + (sum >> 16); // Add any carries from the sum back into the sum to make it ones complement
    return sum;
}
uint16_t NetCheckSumTwo(int count1, void* pData1, int count2, void* pData2)
{
    uint16_t sum = onesComplement(0, count1, pData1);
    return ~onesComplement(sum, count2, pData2);
}
uint16_t NetCheckSum(int count, void* pData)
{
    return ~onesComplement(0, count, pData);
}

static bool ticked()
{
    static time_t lastT = 0;
    time_t thisT = time(NULL);
    bool oneshot = lastT != thisT;
    lastT = thisT;
    return oneshot;
}

int NetInit()
{
    PhyInit();
    TcpInit();
    ArpInit();
    return 0;
}
int NetMain()
{
    PhyMain();
    ArpMain();
    if (ticked())
    {
        DhcpTick();
        ArpTick();
    }
    return 0;
}