63 lines
1.7 KiB
Arduino
63 lines
1.7 KiB
Arduino
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// Ping a remote server, also uses DHCP and DNS.
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// 2011-06-12 <jc@wippler.nl> http://opensource.org/licenses/mit-license.php
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#include <EtherCard.h>
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// ethernet interface mac address, must be unique on the LAN
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static byte mymac[] = { 0x74,0x69,0x69,0x2D,0x30,0x31 };
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byte Ethernet::buffer[700];
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static uint32_t timer;
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// called when a ping comes in (replies to it are automatic)
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static void gotPinged (byte* ptr) {
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ether.printIp(">>> ping from: ", ptr);
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}
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void setup () {
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Serial.begin(57600);
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Serial.println("\n[pings]");
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if (ether.begin(sizeof Ethernet::buffer, mymac) == 0)
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Serial.println(F("Failed to access Ethernet controller"));
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if (!ether.dhcpSetup())
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Serial.println(F("DHCP failed"));
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ether.printIp("IP: ", ether.myip);
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ether.printIp("GW: ", ether.gwip);
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#if 1
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// use DNS to locate the IP address we want to ping
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if (!ether.dnsLookup(PSTR("www.google.com")))
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Serial.println("DNS failed");
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#else
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ether.parseIp(ether.hisip, "74.125.77.99");
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#endif
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ether.printIp("SRV: ", ether.hisip);
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// call this to report others pinging us
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ether.registerPingCallback(gotPinged);
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timer = -9999999; // start timing out right away
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Serial.println();
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}
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void loop () {
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word len = ether.packetReceive(); // go receive new packets
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word pos = ether.packetLoop(len); // respond to incoming pings
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// report whenever a reply to our outgoing ping comes back
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if (len > 0 && ether.packetLoopIcmpCheckReply(ether.hisip)) {
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Serial.print(" ");
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Serial.print((micros() - timer) * 0.001, 3);
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Serial.println(" ms");
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}
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// ping a remote server once every few seconds
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if (micros() - timer >= 5000000) {
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ether.printIp("Pinging: ", ether.hisip);
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timer = micros();
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ether.clientIcmpRequest(ether.hisip);
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}
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}
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