File content as of revision 3:5b17e4656dd0:

/*
 Enc28J60Network.h
 UIPEthernet network driver for Microchip ENC28J60 Ethernet Interface.

 Copyright (c) 2013 Norbert Truchsess <norbert.truchsess@t-online.de>
 All rights reserved.

 inspired by enc28j60.c file from the AVRlib library by Pascal Stang.
 For AVRlib See http://www.procyonengineering.com/

 Modified (ported to mbed) by Zoltan Hudak <hudakz@inbox.com>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef ENC28J60NETWORK_H_
    #define ENC28J60NETWORK_H_

    #include "mbed.h"
    #include "mempool.h"

    #define UIP_RECEIVEBUFFERHANDLE 0xff

//#define ENC28J60DEBUG

/*
 * Received from ip-header, arp etc...
 * when tcp/udp -> tcp/udp-callback -> assign new packet to connection
 */
class Enc28J60Network :
    public MemoryPool
{
private:
    SPI             _spi;
    DigitalOut      _cs;
    uint16_t        nextPacketPtr;
    uint8_t         bank;

    struct memblock receivePkt;

    uint8_t         readOp(uint8_t op, uint8_t address);
    void            writeOp(uint8_t op, uint8_t address, uint8_t data);
    uint16_t        setReadPtr(memhandle handle, memaddress position, uint16_t len);
    void            setERXRDPT(void);
    void            readBuffer(uint16_t len, uint8_t* data);
    void            writeBuffer(uint16_t len, uint8_t* data);
    uint8_t         readByte(uint16_t addr);
    void            writeByte(uint16_t addr, uint8_t data);
    void            setBank(uint8_t address);
    uint8_t         readReg(uint8_t address);
    void            writeReg(uint8_t address, uint8_t data);
    void            writeRegPair(uint8_t address, uint16_t data);
    void            phyWrite(uint8_t address, uint16_t data);
    void            clkout(uint8_t clk);
    uint8_t         getRev(void);
protected:
    void            memblock_mv_cb(memaddress dest, memaddress src, memaddress size);
public:
    Enc28J60Network(PinName mosi, PinName miso, PinName sclk, PinName cs);
    void        init(uint8_t* macaddr);
    memhandle   receivePacket(void);
    void        freePacket(void);
    memaddress  blockSize(memhandle handle);
    void        sendPacket(memhandle handle);
    uint16_t    readPacket(memhandle handle, memaddress position, uint8_t* buffer, uint16_t len);
    uint16_t    writePacket(memhandle handle, memaddress position, uint8_t* buffer, uint16_t len);
    void        copyPacket(memhandle dest, memaddress dest_pos, memhandle src, memaddress src_pos, uint16_t len);
    uint16_t    chksum(uint16_t sum, memhandle handle, memaddress pos, uint16_t len);
};
#endif /* ENC28J60NETWORK_H_ */