Mikroelektronika MIKROE-742 데이터 시트

383

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

Parameters:

- 

mac

: RAM buffer containing valid MAC address. 

- 

ip

: RAM buffer containing valid IP address. 

- 

fullDuplex

: ethernet duplex mode switch. Valid values: 0 (half duplex mode) 

and 1 (full duplex mode). 

The appropriate hardware SPI module must be previously initialized.

const Spi_Ethernet_HALFDUPLEX = 0;
const Spi_Ethernet_FULLDUPLEX = 1;

myMacAddr : 

array[6] of byte; // my MAC address

myIpAddr  : 

array[4] of byte; // my IP addr

...
myMacAddr[0] := 0x00;
myMacAddr[1] := 0x14;

myMacAddr[2] := 0xA5;

myMacAddr[3] := 0x76;
myMacAddr[4] := 0x19;

myMacAddr[5] := 0x3F;

myIpAddr[0]  := 192;
myIpAddr[1]  := 168;

myIpAddr[2]  := 1;
myIpAddr[3]  := 60;

Spi_Init();
Spi_Ethernet_Init(PORTC, 0, PORTC, 1, myMacAddr, myIpAddr,

Spi_Ethernet_FULLDUPLEX);

procedure Spi_Ethernet_Enable(enFlt: byte);

Nothing. 

This is MAC module routine. This routine enables appropriate network traffic on the

ENC28J60

module by the means of it's receive filters (unicast, multicast, broadcast,

crc). Specific type of network traffic will be enabled if a corresponding bit of this rou-
tine's input parameter is set. Therefore, more than one type of network traffic can be
enabled at the same time. For this purpose, predefined library constants (see the
table below) can be ORed to form appropriate input value.