[lwip-users] Connect several boards EVK1100

[Oscar F]

Hi, i want to connect four EVK1100 using a switch.

In all of them i´m using lwip, and i must to configure the file conf_eth.h.

The code of this file is this:

Code:

#ifndef _CONF_ETH_H_
#define _CONF_ETH_H_

/*! Phy Address (set through strap options) */
#define ETHERNET_CONF_PHY_ADDR             0x01
#define ETHERNET_CONF_PHY_ID               0x20005C90

/*! Number of receive buffers. Max ethernet frame size is 1526. A Rx buffer is
128 Bytes long. So 12 Rx buffers are necessary to store one max sized frame.
Multiply that by 2 for performance. */
#define ETHERNET_CONF_NB_RX_BUFFERS        24

/*! USE_RMII_INTERFACE must be defined as 1 to use an RMII interface, or 0
to use an MII interface. */
#define ETHERNET_CONF_USE_RMII_INTERFACE   1

/*! Number of Transmit buffers */
#define ETHERNET_CONF_NB_TX_BUFFERS        10

/*! Size of each Transmit buffer. */
#define ETHERNET_CONF_TX_BUFFER_SIZE       512

/*! Clock definition */
#define ETHERNET_CONF_SYSTEM_CLOCK         48000000

/*! Use Auto Negociation to get speed and duplex */
#define ETHERNET_CONF_AN_ENABLE                      1

/*! Do not use auto cross capability. Unused because not supported by the DP83848
    phy on the EVK1100. */
#define ETHERNET_CONF_AUTO_CROSS_ENABLE              0
/*! use direct cable */
#define ETHERNET_CONF_CROSSED_LINK                   0


/* ethernet default parameters */
/*! MAC address definition.  The MAC address must be unique on the network. */
#define ETHERNET_CONF_ETHADDR0                        0x00
#define ETHERNET_CONF_ETHADDR1                        0x04
#define ETHERNET_CONF_ETHADDR2                        0x25
#define ETHERNET_CONF_ETHADDR3                        0x40
#define ETHERNET_CONF_ETHADDR4                        0x40
#define ETHERNET_CONF_ETHADDR5                        0x41

/*! The IP address being used. */
#define ETHERNET_CONF_IPADDR0                         192
#define ETHERNET_CONF_IPADDR1                         168
#define ETHERNET_CONF_IPADDR2                         1
#define ETHERNET_CONF_IPADDR3                         7

/*! The gateway address being used. */
#define ETHERNET_CONF_GATEWAY_ADDR0                   192
#define ETHERNET_CONF_GATEWAY_ADDR1                   168
#define ETHERNET_CONF_GATEWAY_ADDR2                   1
#define ETHERNET_CONF_GATEWAY_ADDR3                   1

/*! The network mask being used. */
#define ETHERNET_CONF_NET_MASK0                       255
#define ETHERNET_CONF_NET_MASK1                       255
#define ETHERNET_CONF_NET_MASK2                       255
#define ETHERNET_CONF_NET_MASK3                       0

#endif

what parameters should i change? 
of course IP, and MAC? How do i define the address MAC? 
shoul i change the paramter ETHERNET_CONF_PHY_ADDR  and ETHERNET_CONF_PHY_ID ?
What value?

Thanks in advance!
Oscar

-- 
"En la vida hay tres cosas que nunca dan marcha atras, la palabra pronunciada, la flecha lanzada y la oportunidad perdida"