ESP8266 Community Forum

Posted: **Thu Jul 09, 2015 10:55 am**

Hello,

I use an arduino and an ESP8266, no problem, it's works like a charm at my home, using DHCP (I send data to a server using HTTP GET)

Now, I want my ESP8266 connect to another wifi network, but they do not have DHCP enabled.
I know wich IP, netmask, gateway I must use, but I don't find AT command to enter netmask and gateway....

Can you help me plase ?

Thanks in advance,

Posted: **Sat Jul 11, 2015 4:20 pm**

For the arduino and ethernet shield the following code is loaded . Perhaps it will assist if you wish that done on the ESP8266 . I don't use just the AT codes so I can't answer that one.

Code: Select all

/*
 DHCP Chat  Server

 A simple server that distributes any incoming messages to all
 connected clients.  To use telnet to  your device's IP address and type.
 You can see the client's input in the serial monitor as well.
 Using an Arduino Wiznet Ethernet shield.

 THis version attempts to get an IP address using DHCP

 Circuit:
 * Ethernet shield attached to pins 10, 11, 12, 13

 created 21 May 2011
 modified 9 Apr 2012
 by Tom Igoe
 Based on ChatServer example by David A. Mellis

 */

#include <SPI.h>
#include <Ethernet.h>

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network.
// gateway and subnet are optional:
byte mac[] = {
  0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02
};
IPAddress ip(192, 168, 1, 177);
IPAddress gateway(192, 168, 1, 1);
IPAddress subnet(255, 255, 0, 0);

// telnet defaults to port 23
EthernetServer server(23);
boolean gotAMessage = false; // whether or not you got a message from the client yet

void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  // this check is only needed on the Leonardo:
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }


  // start the Ethernet connection:
  Serial.println("Trying to get an IP address using DHCP");
  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    // initialize the ethernet device not using DHCP:
    Ethernet.begin(mac, ip, gateway, subnet);
  }
  // print your local IP address:
  Serial.print("My IP address: ");
  ip = Ethernet.localIP();
  for (byte thisByte = 0; thisByte < 4; thisByte++) {
    // print the value of each byte of the IP address:
    Serial.print(ip[thisByte], DEC);
    Serial.print(".");
  }
  Serial.println();
  // start listening for clients
  server.begin();

}

void loop() {
  // wait for a new client:
  EthernetClient client = server.available();

  // when the client sends the first byte, say hello:
  if (client) {
    if (!gotAMessage) {
      Serial.println("We have a new client");
      client.println("Hello, client!");
      gotAMessage = true;
    }

    // read the bytes incoming from the client:
    char thisChar = client.read();
    // echo the bytes back to the client:
    server.write(thisChar);
    // echo the bytes to the server as well:
    Serial.print(thisChar);
  }
}

ESP8266 Community Forum

How to specify netmask and default gateway when no DHCP ?

How to specify netmask and default gateway when no DHCP ?

Re: How to specify netmask and default gateway when no DHCP