ping()



Açıklama

Ağdaki uzak bir aygıta ping atın.

Sözdizimi

WiFi .ping (ip);
WiFi .begin (ip, ttl);
WiFi .begin (ana bilgisayar);
WiFi .begin (ana bilgisayar, ttl);

Parametreler

ip : ping yapılacak IP adresi (4 baytlık dizi)

host : ping yapılacak ana bilgisayar (dize)

ttl : Yaşam süresi (isteğe bağlı, varsayılan 128'dir). İsteğin yönlendirilebileceği maksimum yönlendirici sayısı.

İadeler

  • Ping başarılı olduğunda WL_PING_SUCCESS
  • Hedef (IP veya ana bilgisayara erişilemiyorsa) WL_PING_DEST_UNREACHABLE
  • Ping zaman aşımına uğradığında WL_PING_TIMEOUT
  • Ana bilgisayar DNS üzerinden çözümlenemediğinde WL_PING_UNKNOWN_HOST
  • Bir hata oluştuğunda WL_PING_ERROR

Misal

/*

  This example connects to a encrypted WiFi network (WPA/WPA2).
  Then it prints the  MAC address of the WiFi shield,
  the IP address obtained, and other network details.
  Then it continuously pings given host specified by IP Address or name.

  Circuit:
   WiFi shield attached / MKR1000

  created 13 July 2010
  by dlf (Metodo2 srl)
  modified 09 June 2016
  by Petar Georgiev
*/

#include <SPI.h>
#include <WiFi101.h>

#include "arduino_secrets.h"
///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char ssid[] = SECRET_SSID;        // your network SSID (name)
char pass[] = SECRET_PASS;    // your network password (use for WPA, or use as key for WEP)
int status = WL_IDLE_STATUS;     // the WiFi radio's status

// Specify IP address or hostname
String hostName = "www.google.com";
int pingResult;

void setup() {
  // Initialize serial and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  // check for the presence of the shield:
  if (WiFi.status() == WL_NO_SHIELD) {
    Serial.println("WiFi shield not present");
    // don't continue:
    while (true);
  }

  // attempt to connect to WiFi network:
  while ( status != WL_CONNECTED) {
    Serial.print("Attempting to connect to WPA SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network:
    status = WiFi.begin(ssid, pass);

    // wait 5 seconds for connection:
    delay(5000);
  }

  // you're connected now, so print out the data:
  Serial.println("You're connected to the network");
  printCurrentNet();
  printWiFiData();
}

void loop() {
  Serial.print("Pinging ");
  Serial.print(hostName);
  Serial.print(": ");

  pingResult = WiFi.ping(hostName);

  if (pingResult >= 0) {
    Serial.print("SUCCESS! RTT = ");
    Serial.print(pingResult);
    Serial.println(" ms");
  } else {
    Serial.print("FAILED! Error code: ");
    Serial.println(pingResult);
  }

  delay(5000);
}

void printWiFiData() {
  // print your WiFi shield's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP address : ");
  Serial.println(ip);

  Serial.print("Subnet mask: ");
  Serial.println((IPAddress)WiFi.subnetMask());

  Serial.print("Gateway IP : ");
  Serial.println((IPAddress)WiFi.gatewayIP());

  // print your MAC address:
  byte mac[6];
  WiFi.macAddress(mac);
  Serial.print("MAC address: ");
  printMacAddress(mac);
}

void printCurrentNet() {
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // print the MAC address of the router you're attached to:
  byte bssid[6];
  WiFi.BSSID(bssid);
  Serial.print("BSSID: ");
  printMacAddress(bssid);

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI): ");
  Serial.println(rssi);

  // print the encryption type:
  byte encryption = WiFi.encryptionType();
  Serial.print("Encryption Type: ");
  Serial.println(encryption, HEX);
  Serial.println();
}

void printMacAddress(byte mac[]) {
  for (int i = 5; i >= 0; i--) {
    if (mac[i] < 16) {
      Serial.print("0");
    }
    Serial.print(mac[i], HEX);
    if (i > 0) {
      Serial.print(":");
    }
  }
  Serial.println();
}