File content as of revision 0:f7caac9b804e:

/*
 * Copyright (c) 2010 by Cristian Maglie <c.maglie@bug.st>
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of either the GNU General Public License version 2
 * or the GNU Lesser General Public License version 2.1, both as
 * published by the Free Software Foundation.
 */

#ifndef    W5100_H_INCLUDED
#define    W5100_H_INCLUDED

#define MBED

#ifdef MBED
#include "mbed.h"
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
#else //MBED
#include <avr/pgmspace.h>
#include <SPI.h>
#endif //MBED

#include "ipaddr.h"

//#define W5200

#ifdef W5200
#define MAX_SOCK_NUM 8
#else
#define MAX_SOCK_NUM 4
#endif


typedef uint8_t SOCKET;

#ifndef W5200
#define IDM_OR  0x8000
#define IDM_AR0 0x8001
#define IDM_AR1 0x8002
#define IDM_DR  0x8003
#endif

/*
class MR {
public:
  static const uint8_t RST   = 0x80;
  static const uint8_t PB    = 0x10;
  static const uint8_t PPPOE = 0x08;
  static const uint8_t LB    = 0x04;
  static const uint8_t AI    = 0x02;
  static const uint8_t IND   = 0x01;
};
*/
/*
class IR {
public:
  static const uint8_t CONFLICT = 0x80;
  static const uint8_t UNREACH  = 0x40;
  static const uint8_t PPPoE    = 0x20;
  static const uint8_t SOCK0    = 0x01;
  static const uint8_t SOCK1    = 0x02;
  static const uint8_t SOCK2    = 0x04;
  static const uint8_t SOCK3    = 0x08;
  static inline uint8_t SOCK(SOCKET ch) { return (0x01 << ch); };
};
*/




class SnMR
{
public:
    static const uint8_t CLOSE  = 0x00;
    static const uint8_t TCP    = 0x01;
    static const uint8_t UDP    = 0x02;
    static const uint8_t IPRAW  = 0x03;
    static const uint8_t MACRAW = 0x04;
    static const uint8_t PPPOE  = 0x05;
    static const uint8_t ND     = 0x20;
    static const uint8_t MULTI  = 0x80;
};

enum SockCMD {
    Sock_OPEN      = 0x01,
    Sock_LISTEN    = 0x02,
    Sock_CONNECT   = 0x04,
    Sock_DISCON    = 0x08,
    Sock_CLOSE     = 0x10,
    Sock_SEND      = 0x20,
    Sock_SEND_MAC  = 0x21,
    Sock_SEND_KEEP = 0x22,
    Sock_RECV      = 0x40
};

/*class SnCmd {
public:
  static const uint8_t OPEN      = 0x01;
  static const uint8_t LISTEN    = 0x02;
  static const uint8_t CONNECT   = 0x04;
  static const uint8_t DISCON    = 0x08;
  static const uint8_t CLOSE     = 0x10;
  static const uint8_t SEND      = 0x20;
  static const uint8_t SEND_MAC  = 0x21;
  static const uint8_t SEND_KEEP = 0x22;
  static const uint8_t RECV      = 0x40;
};
*/

class SnIR
{
public:
    static const uint8_t SEND_OK = 0x10;
    static const uint8_t TIMEOUT = 0x08;
    static const uint8_t RECV    = 0x04;
    static const uint8_t DISCON  = 0x02;
    static const uint8_t CON     = 0x01;
};

class SnSR
{
public:
    static const uint8_t CLOSED      = 0x00;
    static const uint8_t INIT        = 0x13;
    static const uint8_t LISTEN      = 0x14;
    static const uint8_t SYNSENT     = 0x15;
    static const uint8_t SYNRECV     = 0x16;
    static const uint8_t ESTABLISHED = 0x17;
    static const uint8_t FIN_WAIT    = 0x18;
    static const uint8_t CLOSING     = 0x1A;
    static const uint8_t TIME_WAIT   = 0x1B;
    static const uint8_t CLOSE_WAIT  = 0x1C;
    static const uint8_t LAST_ACK    = 0x1D;
    static const uint8_t UDP         = 0x22;
    static const uint8_t IPRAW       = 0x32;
    static const uint8_t MACRAW      = 0x42;
    static const uint8_t PPPOE       = 0x5F;
};

class IPPROTO
{
public:
    static const uint8_t IP   = 0;
    static const uint8_t ICMP = 1;
    static const uint8_t IGMP = 2;
    static const uint8_t GGP  = 3;
    static const uint8_t TCP  = 6;
    static const uint8_t PUP  = 12;
    static const uint8_t UDP  = 17;
    static const uint8_t IDP  = 22;
    static const uint8_t ND   = 77;
    static const uint8_t RAW  = 255;
};

class W5100Class
{
public:
#ifdef MBED
    void hardware_reset();
#endif //MBED
    void init();

    /**
     * @brief    This function is being used for copy the data form Receive buffer of the chip to application buffer.
     *
     * It calculate the actual physical address where one has to read
     * the data from Receive buffer. Here also take care of the condition while it exceed
     * the Rx memory uper-bound of socket.
     */
    void read_data(SOCKET s, volatile uint8_t * src, volatile uint8_t * dst, uint16_t len);

    /**
     * @brief     This function is being called by send() and sendto() function also.
     *
     * This function read the Tx write pointer register and after copy the data in buffer update the Tx write pointer
     * register. User should read upper byte first and lower byte later to get proper value.
     */
    void send_data_processing(SOCKET s, const uint8_t *data, uint16_t len);
    /**
     * @brief A copy of send_data_processing that uses the provided ptr for the
     *        write offset.  Only needed for the "streaming" UDP API, where
     *        a single UDP packet is built up over a number of calls to
     *        send_data_processing_ptr, because TX_WR doesn't seem to get updated
     *        correctly in those scenarios
     * @param ptr value to use in place of TX_WR.  If 0, then the value is read
     *        in from TX_WR
     * @return New value for ptr, to be used in the next call
     */
// FIXME Update documentation
    void send_data_processing_offset(SOCKET s, uint16_t data_offset, const uint8_t *data, uint16_t len);

    /**
     * @brief    This function is being called by recv() also.
     *
     * This function read the Rx read pointer register
     * and after copy the data from receive buffer update the Rx write pointer register.
     * User should read upper byte first and lower byte later to get proper value.
     */
    void recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek = 0);

    inline void setGatewayIp(uint8_t *_addr);
    inline void getGatewayIp(uint8_t *_addr);

    inline void setSubnetMask(uint8_t *_addr);
    inline void getSubnetMask(uint8_t *_addr);

    inline void setMACAddress(uint8_t * addr);
    inline void getMACAddress(uint8_t * addr);

    inline void setIPAddress(uint8_t * addr);
    inline void getIPAddress(uint8_t * addr);

    inline void setRetransmissionTime(uint16_t timeout);
    inline void setRetransmissionCount(uint8_t _retry);


    void execCmdSn(SOCKET s, SockCMD _cmd);

    uint16_t getTXFreeSize(SOCKET s);
    uint16_t getRXReceivedSize(SOCKET s);


    // W5100 Registers
    // ---------------
private:
    static uint8_t write(uint16_t _addr, uint8_t _data);
    static uint16_t write(uint16_t addr, const uint8_t *buf, uint16_t len);
    static uint8_t read(uint16_t addr);
    static uint16_t read(uint16_t addr, uint8_t *buf, uint16_t len);

#define __GP_REGISTER8(name, address)             \
  static inline void write##name(uint8_t _data) { \
    write(address, _data);                        \
  }                                               \
  static inline uint8_t read##name() {            \
    return read(address);                         \
  }
#define __GP_REGISTER16(name, address)            \
  static void write##name(uint16_t _data) {       \
    write(address,   _data >> 8);                 \
    write(address+1, _data & 0xFF);               \
  }                                               \
  static uint16_t read##name() {                  \
    uint16_t res = read(address);                 \
    res = (res << 8) + read(address + 1);         \
    return res;                                   \
  }
#define __GP_REGISTER_N(name, address, size)      \
  static uint16_t write##name(uint8_t *_buff) {   \
    return write(address, _buff, size);           \
  }                                               \
  static uint16_t read##name(uint8_t *_buff) {    \
    return read(address, _buff, size);            \
  }

public:
    __GP_REGISTER8 (MR,     0x0000);    // Mode
    __GP_REGISTER_N(GAR,    0x0001, 4); // Gateway IP address
    __GP_REGISTER_N(SUBR,   0x0005, 4); // Subnet mask address
    __GP_REGISTER_N(SHAR,   0x0009, 6); // Source MAC address
    __GP_REGISTER_N(SIPR,   0x000F, 4); // Source IP address
    __GP_REGISTER8 (IR,     0x0015);    // Interrupt
    __GP_REGISTER8 (IMR,    0x0016);    // Interrupt Mask
    __GP_REGISTER16(RTR,    0x0017);    // Timeout address
    __GP_REGISTER8 (RCR,    0x0019);    // Retry count

#ifndef W5200
    __GP_REGISTER8 (RMSR,   0x001A);    // Receive memory size
    __GP_REGISTER8 (TMSR,   0x001B);    // Transmit memory size
#endif
    __GP_REGISTER8 (PATR,   0x001C);    // Authentication type address in PPPoE mode
    __GP_REGISTER8 (VERSIONR,0x001f);   // Chip version
    __GP_REGISTER8 (PTIMER, 0x0028);    // PPP LCP Request Timer
    __GP_REGISTER8 (PMAGIC, 0x0029);    // PPP LCP Magic Number
#ifndef W5200
    __GP_REGISTER_N(UIPR,   0x002A, 4); // Unreachable IP address in UDP mode
    __GP_REGISTER16(UPORT,  0x002E);    // Unreachable Port address in UDP mode
#endif
    __GP_REGISTER8 (PHYSTATUS,0x0035);  // PHY Status

#undef __GP_REGISTER8
#undef __GP_REGISTER16
#undef __GP_REGISTER_N

    // W5100 Socket registers
    // ----------------------
private:
    static inline uint8_t readSn(SOCKET _s, uint16_t _addr);
    static inline uint8_t writeSn(SOCKET _s, uint16_t _addr, uint8_t _data);
    static inline uint16_t readSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t len);
    static inline uint16_t writeSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t len);

#ifdef W5200
    static const uint16_t CH_BASE = 0x4000;
#else
    static const uint16_t CH_BASE = 0x0400;
#endif

    static const uint16_t CH_SIZE = 0x0100;

#define __SOCKET_REGISTER8(name, address)                    \
  static inline void write##name(SOCKET _s, uint8_t _data) { \
    writeSn(_s, address, _data);                             \
  }                                                          \
  static inline uint8_t read##name(SOCKET _s) {              \
    return readSn(_s, address);                              \
  }
#define __SOCKET_REGISTER16(name, address)                   \
  static void write##name(SOCKET _s, uint16_t _data) {       \
    writeSn(_s, address,   _data >> 8);                      \
    writeSn(_s, address+1, _data & 0xFF);                    \
  }                                                          \
  static uint16_t read##name(SOCKET _s) {                    \
    uint16_t res = readSn(_s, address);                      \
    res = (res << 8) + readSn(_s, address + 1);              \
    return res;                                              \
  }
#define __SOCKET_REGISTER_N(name, address, size)             \
  static uint16_t write##name(SOCKET _s, uint8_t *_buff) {   \
    return writeSn(_s, address, _buff, size);                \
  }                                                          \
  static uint16_t read##name(SOCKET _s, uint8_t *_buff) {    \
    return readSn(_s, address, _buff, size);                 \
  }

public:
    __SOCKET_REGISTER8(SnMR,        0x0000)        // Mode
    __SOCKET_REGISTER8(SnCR,        0x0001)        // Command
    __SOCKET_REGISTER8(SnIR,        0x0002)        // Interrupt
    __SOCKET_REGISTER8(SnSR,        0x0003)        // Status
    __SOCKET_REGISTER16(SnPORT,     0x0004)        // Source Port
    __SOCKET_REGISTER_N(SnDHAR,     0x0006, 6)     // Destination Hardw Addr
    __SOCKET_REGISTER_N(SnDIPR,     0x000C, 4)     // Destination IP Addr
    __SOCKET_REGISTER16(SnDPORT,    0x0010)        // Destination Port
    __SOCKET_REGISTER16(SnMSSR,     0x0012)        // Max Segment Size
    __SOCKET_REGISTER8(SnPROTO,     0x0014)        // Protocol in IP RAW Mode
    __SOCKET_REGISTER8(SnTOS,       0x0015)        // IP TOS
    __SOCKET_REGISTER8(SnTTL,       0x0016)        // IP TTL
    __SOCKET_REGISTER16(SnTX_FSR,   0x0020)        // TX Free Size
    __SOCKET_REGISTER16(SnTX_RD,    0x0022)        // TX Read Pointer
    __SOCKET_REGISTER16(SnTX_WR,    0x0024)        // TX Write Pointer
    __SOCKET_REGISTER16(SnRX_RSR,   0x0026)        // RX Free Size
    __SOCKET_REGISTER16(SnRX_RD,    0x0028)        // RX Read Pointer
    __SOCKET_REGISTER16(SnRX_WR,    0x002A)        // RX Write Pointer (supported?)

#undef __SOCKET_REGISTER8
#undef __SOCKET_REGISTER16
#undef __SOCKET_REGISTER_N


private:
    static const uint8_t  RST = 7; // Reset BIT

#ifdef W5200
    static const int SOCKETS = 8;
#else
    static const int SOCKETS = 4;
#endif

    static const uint16_t SMASK = 0x07FF; // Tx buffer MASK
    static const uint16_t RMASK = 0x07FF; // Rx buffer MASK
public:
    static const uint16_t SSIZE = 2048; // Max Tx buffer size
private:
    static const uint16_t RSIZE = 2048; // Max Rx buffer size
    uint16_t SBASE[SOCKETS]; // Tx buffer base address
    uint16_t RBASE[SOCKETS]; // Rx buffer base address

private:
#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
    inline static void initSS()    {
        DDRB  |=  _BV(4);
    };
    inline static void setSS()     {
        PORTB &= ~_BV(4);
    };
    inline static void resetSS()   {
        PORTB |=  _BV(4);
    };
#elif defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB162__)
    inline static void initSS()    {
        DDRB  |=  _BV(0);
    };
    inline static void setSS()     {
        PORTB &= ~_BV(0);
    };
    inline static void resetSS()   {
        PORTB |=  _BV(0);
    };
#else
#ifndef MBED
    inline static void initSS()    {
        DDRB  |=  _BV(2);
    };
    inline static void setSS()     {
        PORTB &= ~_BV(2);
    };
    inline static void resetSS()   {
        PORTB |=  _BV(2);
    };
#endif //MBED
#endif

};

extern W5100Class W5100;

uint8_t W5100Class::readSn(SOCKET _s, uint16_t _addr)
{
    return read(CH_BASE + _s * CH_SIZE + _addr);
}

uint8_t W5100Class::writeSn(SOCKET _s, uint16_t _addr, uint8_t _data)
{
    return write(CH_BASE + _s * CH_SIZE + _addr, _data);
}

uint16_t W5100Class::readSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t _len)
{
    return read(CH_BASE + _s * CH_SIZE + _addr, _buf, _len);
}

uint16_t W5100Class::writeSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t _len)
{
    return write(CH_BASE + _s * CH_SIZE + _addr, _buf, _len);
}

void W5100Class::getGatewayIp(uint8_t *_addr)
{
    readGAR(_addr);
}

void W5100Class::setGatewayIp(uint8_t *_addr)
{
    writeGAR(_addr);
}

void W5100Class::getSubnetMask(uint8_t *_addr)
{
    readSUBR(_addr);
}

void W5100Class::setSubnetMask(uint8_t *_addr)
{
    writeSUBR(_addr);
}

void W5100Class::getMACAddress(uint8_t *_addr)
{
    readSHAR(_addr);
}

void W5100Class::setMACAddress(uint8_t *_addr)
{
    writeSHAR(_addr);
}

void W5100Class::getIPAddress(uint8_t *_addr)
{
    readSIPR(_addr);
}

void W5100Class::setIPAddress(uint8_t *_addr)
{
    writeSIPR(_addr);
}

void W5100Class::setRetransmissionTime(uint16_t _timeout)
{
    writeRTR(_timeout);
}

void W5100Class::setRetransmissionCount(uint8_t _retry)
{
    writeRCR(_retry);
}

#endif