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#include "dev/enc28j60.h"

#include <avr/io.h>

#include <util/delay.h>

#include "uip/uipopt.h"

#include "uip/uip.h"

/*

* This is the interface between the ENC28J60 driver and the uIP TCP/IP stack.

* The code was lifted from http://code.google.com/p/avr-uip/

*/

//Read a packet from the controller and place it in the uIP buffer.

//The length of the packet is returned, 0 if no packet was waiting.

unsigned int network_read(void){

        uint16_t len;

        len=enc28j60PacketReceive(UIP_BUFSIZE, (uint8_t *)uip_buf);

        return len;

}

//Send a packet from the uIP buffer

void network_send(void){

        if(uip_len <= UIP_LLH_LEN + 40){

                enc28j60PacketSendTwo(uip_len, (uint8_t *)uip_buf, 0, 0);

        }else{

                enc28j60PacketSendTwo(54, (uint8_t *)uip_buf , uip_len - UIP_LLH_LEN - 40, (uint8_t*)uip_appdata);

        }

}

//Initialize ethernet controller

void network_init(void)

{

        //Initialise the device

        enc28j60Init();

        //Configure leds

        enc28j60PhyWrite(PHLCON,0x476);

}

void network_get_MAC(uint8_t* macaddr)

{

        // read MAC address registers

        // NOTE: MAC address in ENC28J60 is byte-backward

        *macaddr++ = enc28j60Read(MAADR5);

        *macaddr++ = enc28j60Read(MAADR4);

        *macaddr++ = enc28j60Read(MAADR3);

        *macaddr++ = enc28j60Read(MAADR2);

        *macaddr++ = enc28j60Read(MAADR1);

        *macaddr++ = enc28j60Read(MAADR0);

}

void network_set_MAC(uint8_t* macaddr)

{

        // write MAC address

        // NOTE: MAC address in ENC28J60 is byte-backward

        enc28j60Write(MAADR5, *macaddr++);

        enc28j60Write(MAADR4, *macaddr++);

        enc28j60Write(MAADR3, *macaddr++);

        enc28j60Write(MAADR2, *macaddr++);

        enc28j60Write(MAADR1, *macaddr++);

        enc28j60Write(MAADR0, *macaddr++);

}