DNSDemo.ino

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// EtherDune DNS Demo
// Author: Javier Peletier <jm@friendev.com>
// Summary: Configures EtherDune to resolve a hostname and print its IP address.
//
// Copyright (c) 2015 All Rights Reserved, http://friendev.com
//
// This source is subject to the GPLv2 license.
// Please see the License.txt file for more information.
// All other rights reserved.
//
// THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY 
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.



#include <ACross.h>
#include <FlowScanner.h>
#include <DNS.h>


#define AC_LOGLEVEL 6
#include <ACLog.h>
ACROSS_MODULE("DNSDemo");


static const uint8_t CS_PIN = 10; //Put here what pin you are using for your ENC28J60's chip select
static MACAddress_P mymac = { 0x66, 0x72, 0x69, 0x65, 0x6e, 0x64 };
static IPAddress_P gatewayIP = { 192, 168, 1, 1 };
static IPAddress_P myIP = { 192, 168, 1, 33 };
static IPAddress_P netmask = { 255, 255, 255, 0 };
static IPAddress_P dnsIP = { 8, 8, 8, 8 };

class DNSResolver : public NetworkService
{
    uint16_t id;
    bool onPacketReceived(){ return false; };
    void onDNSResolve(uint8_t status, uint16_t identification, const IPAddress& ip)
    {
        if (identification == id)
        {
            if (status == 0)
            {
                id = 0;
                Serial.print(F("Resolved hostname to: "));
                Serial.println(ip.toString());

            }
            else
            {
                Serial.println("Could not resolve hostname");
            }
        }
    }

public:
    void resolve(const char* hostName)
    {
        id = DNS().resolve(hostName);
        Serial.print(F("Resolving "));
        Serial.print(hostName);
        Serial.println(F(" ..."));

    }

} resolver;



void setup()
{

    Serial.begin(115200);
    ACross::init();

    Serial.println(F("EtherDune DNS sample"));
    Serial.print(F("Free RAM: ")); Serial.println(ACross::getFreeRam());
    Serial.println(F("Press any key to start..."));

    while (!Serial.available());

    net::localMAC = mymac;
    net::localIP = myIP;
    net::gatewayIP = gatewayIP;
    net::netmask = netmask;
    net::dnsIP = dnsIP;

    if (!net::begin(CS_PIN))
        ACERROR("failed to start EtherDune");

    ACINFO("waiting for link...");

    while (!net::isLinkUp());

    ACINFO("link is up");


    resolver.resolve("www.friendev.com");

}


void loop()
{
    net::loop();

}