ESP8266 Community Forum

Posted: **Wed Jun 15, 2016 11:31 am**

Hi everybody!

i'm noob in this forum, so first of all, sorry if i mess with this post in some way. Second, i'm spanish guy, sorry for my english!

Now, the main thing. I'm trying to connect an esp8266-12 to a w5100 ethernet shield. I use ICSP to vcc,, D13,D12,D14,D16 connectors and the SS (d15) pin in esp8266 to the 10 pin of w5100. Then i loaded a simple program like this:

Code: Select all

#include <Ethernet.h>
#include <SPI.h>
IPAddress ipEnvio;

byte mac[] = { 0x00, 0x11, 0x22, 0x33, 0xFB, 0x11 }; // Use your MAC address
String ipEnvioString;
void setup()
{
  pinMode(15, OUTPUT);
  // put your setup code here, to run once:
Serial.begin(9600);
Serial.println("Intentando establecer conexion por DHCP.");
if( (Ethernet.begin(mac))==0)
{
  Serial.println("Error estableciendo conexion por DHCP");

  IPAddress dnServer(8,8,8,8);
  

  IPAddress gateway(192,168,1,1);
  

  IPAddress subnet(255,255,255,0);
  

  IPAddress ip(192,168,1,114);
  

  Ethernet.begin(mac, ip, dnServer, gateway, subnet);


}
  Serial.print("Mi ip en begin es: ");
  Serial.println(Ethernet.localIP());

}

void loop() {
  // put your main code here, to run repeatedly:
  
  //Componemos la ip que tenemos para enviarla por PUT
     ipEnvio=Ethernet.localIP();
     ipEnvioString = String(ipEnvio[0])+"."+String(ipEnvio[1])+"."+String(ipEnvio[2])+"."+String(ipEnvio[3]);

Serial.print("Mi ip por cadena es: ");
Serial.println(ipEnvioString);
Serial.print("Mi ip por funcion es: ");
Serial.println(Ethernet.localIP());

delay(3000);
}

to my esp8266, no problem loading skecth.

But, when i try to use DHCP it is impossible. Always use 192.168.1.114 as IP. And the most weird thing is Serial.print(Ethernet.localIP()) is returning 255.224.255.224, but i can ping to 192.168.1.114 without problem.

What the hell is going here?

Thanks to you!!

ESP8266 Community Forum

w5100 wire connection with esp8266

w5100 wire connection with esp8266