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Author Topic: Problem with client.connect in WifiWebClient example.  (Read 2187 times)
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Hello,

 i have an arduino UNO R3 and a WiFi Shield and i have been trying to make a proyect where i have to connect to a web page. I am using the WiFiWebClient example to test the connection to the google web page, but the problem comes when the code gets to the client.connect instruction because it does not connect to the page.

The arduino and the shield connects good to my wifi network and i can ping it without problem, i have tryed with a lot of solutions and i cant connect yet.

I check the address of the web page, update the correct ip and check the port but still does not work.

I dont now what to do, i hope somebody can help me. Thanks.

I copy the code of the example:

Code:

#include <SPI.h>
#include <WiFi.h>

char ssid[] = "Donteventry"; //  your network SSID (name)
char pass[] = "2388914";    // your network password (use for WPA, or use as key for WEP)
int keyIndex = 0;            // your network key Index number (needed only for WEP)

int status = WL_IDLE_STATUS;
// if you don't want to use DNS (and reduce your sketch size)
// use the numeric IP instead of the name for the server:
//IPAddress server(74,125,232,128);  // numeric IP for Google (no DNS)
char server[] = "www.google.com";    // name address for Google (using DNS)

// Initialize the Ethernet client library
// with the IP address and port of the server
// that you want to connect to (port 80 is default for HTTP):
WiFiClient client;

void setup() {
  //Initialize serial and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo 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 SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:   
    status = WiFi.begin(ssid, pass);
 
    // wait 10 seconds for connection:
    delay(10000);
  }
  Serial.println("Connected to wifi");
  printWifiStatus();
 
  Serial.println("\nStarting connection to server...");
  // if you get a connection, report back via serial:
  if (client.connect(server, 80)) {
    Serial.println("connected to server");
    // Make a HTTP request:
    client.println("GET /search?q=arduino HTTP/1.1");
    client.println("Host: www.google.com");
    client.println("Connection: close");
    client.println();
  }
}

void loop() {
  // if there are incoming bytes available
  // from the server, read them and print them:
  while (client.available()) {
    char c = client.read();
    Serial.write(c);
  }

  // if the server's disconnected, stop the client:
  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting from server.");
    client.stop();

    // do nothing forevermore:
    while(true);
  }
}


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

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

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





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Miramar Beach, Florida
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Have you upgraded the firmware in your wifi shield? If not, it will have problems connecting. Compile and upload this sketch. If it shows the firmware version as 1.0.0, then you need to upgrade the firmware. If it shows 1.1.0, then it is current as of today.
Code:
#include <SPI.h>
#include <WiFi.h>

void setup() {
  //Initialize serial and wait for port to open:
  Serial.begin(9600);
  
  // check for the presence of the shield:
  if (WiFi.status() == WL_NO_SHIELD) {
    Serial.println("WiFi shield not present");
    // don't continue:
    while(true);
  }

  Serial.print("Firmware version: ");
  Serial.println(WiFi.firmwareVersion());
}

void loop() {
}
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Hello.

No i did not upgrade the shield´s firmware because my shield have the microcontroller AT32UC3A1512 and the HDG204 module. Those are different than the ones shown in in http://arduino.cc/en/Hacking/WiFiShieldFirmwareUpgrading

So i dont know if its going to work.

Have you seen a shield with those microcontrollers before?
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You should post a link to your wifi shield hardware. When you mentioned WiFi shield, I presumed (maybe incorrectly) that it was an Arduino model.
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The chips are numbered differently but run the same Wi-Fi firmware. You can upgrade the firmware without any worries.
Check forum here for similar issue : http://forum.arduino.cc/index.php?topic=217333.0

Cheers !
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