WIFI - Ip Range

Projects Programming
1

Hello

I would like to know if there is a way, in a WiFi connection, to limit a range of IPs that the arduino can pick up.

For example, I would like to get a Local IP address from 192.168.0.150 to 192.168.0.250.

I searched for this question but couldn't find it.

My code is still pretty simple:

#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>

WiFiClient wifiClient;

const char* ssid = "Wifi-3AA3";
const char* password = "c152f5378aa3";

WebServer server(80);

void getHelloWord() {
  server.send(200, "text/json", "{\"name\": \"Hello world\"}");
}

// Define routing
void restServerRouting() {
  server.on("/", HTTP_GET, []() {
    server.send(200, F("text/html"),
                F("Welcome to the REST Web Server"));
  });
  server.on(F("/helloWorld"), HTTP_GET, getHelloWord);
}

// Manage not found URL
void handleNotFound() {
  String message = "File Not Found\n\n";
  message += "URI: ";
  message += server.uri();
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET) ? "GET" : "POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";
  for (uint8_t i = 0; i < server.args(); i++) {
    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
  }
  server.send(404, "text/plain", message);
}


void setup() {
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.println("");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.print(WiFi.localIP());
  // Set server routing
  restServerRouting();
  // Set not found response
  server.onNotFound(handleNotFound);
  // Start server
  server.begin();

}

void loop() {
  server.handleClient();

}

Thanks!

2

You'd do that via the WiFi Router's configuration web page, not in the Arduino.

3

But the arduino code has no way to do this?

4

The router controls the DHCP process. Perhaps the Arduino can ask for a specific IP address if available. It does beg the question of WHY you want to do this?

5

I was just thinking of a way to limit the Arduino, to make the Arduinos only connect in a certain range of IPs. But it was just a question.

I know that it is possible to determine a fixed IP on it, I just wanted to know if, if it is dynamic, I can limit an range.

6

In the DHCP server, ‘map’ a specific IP address to the Arduino’s network interface (the MAC address), then, even when using DHCP, it will always get that particular address.

7
8

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