File content as of revision 6:677dfa3984d1:

// EthernetInterface for W5500 2014/8/20
/*
// sample usgae. 
// copy below code block to main code.

#if defined(TARGET_LPC1114)
    SPI spi(dp2, dp1, dp6); // mosi, miso, sclk
    EthernetInterface eth(&spi, dp25, dp26); // spi, cs, reset
    wait(1); // 1 second for stable state
#elif defined(TARGET_LPC1768)
    SPI spi(p11, p12, p13); // mosi, miso, sclk
    EthernetInterface eth(&spi, p14, p15); // spi, cs, reset
    wait(1); // 1 second for stable state
#elif defined(TARGET_LPC11U68)
    SPI spi(P0_9, P0_8, P1_29); // mosi, miso, sclk
    EthernetInterface eth(&spi, P0_2, P1_28);//, nRESET(p9); // reset pin is dummy, don't affect any pin of WIZ550io
    spi.format(8,0); // 8bit, mode 0
    spi.frequency(7000000); // 7MHz
    wait(1); // 1 second for stable state
#endif

    eth.init(); //Use DHCP
    dbg.printf("init\r\n");
    eth.connect();
    dbg.printf("IP address: %s\r\n", eth.getIPAddress());

*/

#include "EthernetInterface.h"
#include "DHCPClient.h"

EthernetInterface::EthernetInterface(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset) :
        WIZnet_Chip(mosi, miso, sclk, cs, reset)
{
    ip_set = false;
}

EthernetInterface::EthernetInterface(SPI* spi, PinName cs, PinName reset) :
        WIZnet_Chip(spi, cs, reset)
{
    ip_set = false;
}


int EthernetInterface::init()
{
    dhcp = true;
    //
    //for (int i =0; i < 6; i++) this->mac[i] = mac[i];
    //
    reset();
    return 0;
}

int EthernetInterface::init(uint8_t * mac)
{
    dhcp = true;
    //
    for (int i =0; i < 6; i++) this->mac[i] = mac[i];
    //
    reset();
    setmac();    
    return 0;
}

// add this function, because sometimes no needed MAC address in init calling.
int EthernetInterface::init(const char* ip, const char* mask, const char* gateway)
{
    dhcp = false;
    //
    //for (int i =0; i < 6; i++) this->mac[i] = mac[i];
    //
    this->ip = str_to_ip(ip);
    strcpy(ip_string, ip);
    ip_set = true;
    this->netmask = str_to_ip(mask);
    this->gateway = str_to_ip(gateway);
    reset();
    
    // @Jul. 8. 2014 add code. should be called to write chip.
    setip(); 
    
    return 0;
}

int EthernetInterface::init(uint8_t * mac, const char* ip, const char* mask, const char* gateway)
{
    dhcp = false;
    //
    for (int i =0; i < 6; i++) this->mac[i] = mac[i];
    //
    this->ip = str_to_ip(ip);
    strcpy(ip_string, ip);
    ip_set = true;
    this->netmask = str_to_ip(mask);
    this->gateway = str_to_ip(gateway);
    reset();

    // @Jul. 8. 2014 add code. should be called to write chip.
    setmac();
    setip();
    
    return 0;
}

// Connect Bring the interface up, start DHCP if needed.
int EthernetInterface::connect()
{
    if (dhcp) {
        int r = IPrenew();
        if (r < 0) {
            return r;
        }
    }
    
    if (WIZnet_Chip::setip() == false) return -1;
    return 0;
}

// Disconnect Bring the interface down.
int EthernetInterface::disconnect()
{
    if (WIZnet_Chip::disconnect() == false) return -1;
    return 0;
}

char* EthernetInterface::getIPAddress()
{
    uint32_t ip = reg_rd<uint32_t>(SIPR);
    snprintf(ip_string, sizeof(ip_string), "%d.%d.%d.%d", (ip>>24)&0xff, (ip>>16)&0xff, (ip>>8)&0xff, ip&0xff);
    return ip_string;
}

char* EthernetInterface::getNetworkMask()
{
    uint32_t ip = reg_rd<uint32_t>(SUBR);
    snprintf(mask_string, sizeof(mask_string), "%d.%d.%d.%d", (ip>>24)&0xff, (ip>>16)&0xff, (ip>>8)&0xff, ip&0xff);
    return mask_string;
}

char* EthernetInterface::getGateway()
{
    uint32_t ip = reg_rd<uint32_t>(GAR);
    snprintf(gw_string, sizeof(gw_string), "%d.%d.%d.%d", (ip>>24)&0xff, (ip>>16)&0xff, (ip>>8)&0xff, ip&0xff);
    return gw_string;
}

char* EthernetInterface::getMACAddress()
{
    uint8_t mac[6];
    reg_rd_mac(SHAR, mac);
    snprintf(mac_string, sizeof(mac_string), "%02X:%02X:%02X:%02X:%02X:%02X", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
    return mac_string; 
}

int EthernetInterface::IPrenew(int timeout_ms)
{
//    printf("DHCP Started, waiting for IP...\n");  
    DHCPClient dhcp;
    int err = dhcp.setup(timeout_ms);
    if (err == (-1)) {
//        printf("Timeout.\n");
        return -1;
    }
//    printf("Connected, IP: %d.%d.%d.%d\n", dhcp.yiaddr[0], dhcp.yiaddr[1], dhcp.yiaddr[2], dhcp.yiaddr[3]);
    ip      = (dhcp.yiaddr[0] <<24) | (dhcp.yiaddr[1] <<16) | (dhcp.yiaddr[2] <<8) | dhcp.yiaddr[3];
    gateway = (dhcp.gateway[0]<<24) | (dhcp.gateway[1]<<16) | (dhcp.gateway[2]<<8) | dhcp.gateway[3];
    netmask = (dhcp.netmask[0]<<24) | (dhcp.netmask[1]<<16) | (dhcp.netmask[2]<<8) | dhcp.netmask[3];
    dnsaddr = (dhcp.dnsaddr[0]<<24) | (dhcp.dnsaddr[1]<<16) | (dhcp.dnsaddr[2]<<8) | dhcp.dnsaddr[3];
    return 0;
}