arduinoでethernet

オークションで手に入れたenc28j60をarduino unoにつないで見ました。

写真

回路図

ハイパーターミナル

サンプルコード

#include "EtherCard.h"

static byte mymac[] = {
    0x74,
    0x69,
    0x69,
    0x2D,
    0x30,
    0x31
};
byte Ethernet::buffer[700];
static uint32_t timer;
const char website[] PROGMEM = "tanista.dip.jp";
static void my_callback(byte status, word off, word len)
{
    Serial.println(">>>");
    Ethernet::buffer[off + 300] = 0;
    Serial.print((const char *) Ethernet::buffer + off);
    Serial.println("...");
}
void setup()
{
    Serial.begin(9600);
    Serial.println(F("\n[webClient]"));
    if (ether.begin(sizeof Ethernet::buffer, mymac) == 0) Serial.println(F("Failed to access Ethernet controller"));
    if (!ether.dhcpSetup()) Serial.println(F("DHCP failed"));
    ether.printIp("IP: ", ether.myip);
    ether.printIp("GW: ", ether.gwip);
    ether.printIp("DNS: ", ether.dnsip);
    if (!ether.dnsLookup(website)) Serial.println("DNS failed");
    ether.printIp("SRV: ", ether.hisip);
}
void loop()
{
    ether.packetLoop(ether.packetReceive());
    if (millis() > timer)
    {
        timer = millis() + 50000;
        Serial.println();
        Serial.print("<<< REQ ");
        ether.browseUrl(PSTR("/"), "", website, my_callback);
    }
}