#include "EtherShield.h"
#include "NanodeMAC.h"

static uint8_t mymac[6] = { 0x54,0x55,0x58,0x12,0x34,0x56 };

static uint8_t myip[4] = { 0,0,0,0 };
static uint8_t mynetmask[4] = { 0,0,0,0 };

// IP address of the host being queried to contact (IP of the first portion of the URL):
static uint8_t websrvip[4] = { 0, 0, 0, 0 };

// Default gateway. The ip address of your DSL router. It can be set to the same as
// websrvip the case where there is no default GW to access the
// web server (=web server is on the same lan as this host)
static uint8_t gwip[4] = { 0,0,0,0};

static uint8_t dnsip[4] = { 0,0,0,0 };
static uint8_t dhcpsvrip[4] = { 0,0,0,0 };

#define DHCPLED 6

// listen port for tcp/www:
#define MYWWWPORT 80

#define BUFFER_SIZE 750
static uint8_t buf[BUFFER_SIZE+1];

EtherShield es=EtherShield();
NanodeMAC mac( mymac );

// Programmable delay for flashing LED
uint16_t delayRate = 0;

void setup() {

Serial.begin(19200);
Serial.println("DHCP Client test");
pinMode( DHCPLED, OUTPUT);
digitalWrite( DHCPLED, HIGH); // Turn it off

for( int i=0; i<6; i++ ) {
Serial.print( mymac[i], HEX );
Serial.print( i < 5 ? ":" : "" );
}
Serial.println();

// Initialise SPI interface
es.ES_enc28j60SpiInit();

// initialize enc28j60
Serial.println("Init ENC28J60");
es.ES_enc28j60Init(mymac,8);

Serial.println("Init done");

Serial.print( "ENC28J60 version " );
Serial.println( es.ES_enc28j60Revision(), HEX);
if( es.ES_enc28j60Revision() <= 0 ) {
Serial.println( "Failed to access ENC28J60");

while(1); // Just loop here
}

Serial.println("Requesting IP Addresse");
// Get IP Address details
if( es.allocateIPAddress(buf, BUFFER_SIZE, mymac, 80, myip, mynetmask, gwip, dhcpsvrip, dnsip ) > 0 ) {
// Display the results:
Serial.print( "My IP: " );
printIP( myip );
Serial.println();

Serial.print( "Netmask: " );
printIP( mynetmask );
Serial.println();

Serial.print( "DNS IP: " );
printIP( dnsip );
Serial.println();

Serial.print( "GW IP: " );
printIP( gwip );
Serial.println();

digitalWrite( DHCPLED, HIGH);
delayRate = 1000;
} else {
Serial.println("Failed to get IP address");
delayRate = 200;
}

}

// Output a ip address from buffer
void printIP( uint8_t *buf ) {
for( int i = 0; i < 4; i++ ) {
Serial.print( buf[i], DEC );
if( i<3 )
Serial.print( "." );
}
}