WiFi Shield problems: Header files not found

Projects Programming
1

Hi Experts,
after working through coursera's interface-with-arduino lecture I tried to following sketch
to access theinternet with a WiFi Shield

#include <WiFi.h>
#include <WiFiClient.h>
#include <WiFiServer.h>
#include <WiFiUdp.h>

#include <WiFi.h>
#include <WiFiClient.h>
#include <WiFiServer.h>
#include <WiFiUdp.h>
#include <SPI.h>
#include <Ethernet.h>

char ssid[] = "network-name";
char pass[] = "password";
int keyIndex = 0;


int status = WL_IDLE_STATUS;
char server[] = "www.google.com";
WiFiClient client;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  while(!Serial) {
    ;
  }
  if (WiFi.status() == WL_NO_SHIELD) {
    Serial.println("WiFi shield not present");
    while (true);
  }
  while (status != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID ");
    Serial.println(ssid);
    status = WiFi.begin(ssid);
    delay(100000);
  }
  Serial.println("Connection sucessfull");
  //printWifiStatus();

  Serial.println("\nStarting connection to server....");
  if (client.connect(server, 80)) {
    Serial.println("connected to server");
    client.println("GET /search?q=arduino HTTP/1.1"); //= suche nach Stichwort arduino
    client.println("Host: www.google.com");
    client.println("Connection: close");
    client.println();  
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  while (client.available()) {
    char c = client.read();
    Serial.write(c);
  }
  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting from server.");
    client.stop();

    while (true);
  }
}

But I only got "WiFi shield not present" and and the message (in german): Library not valid, no header files (.h) found in my sketch. I used the WiFi library from sketch to start.
????

2

luemar:
I tried to following sketch to access theinternet with a WiFi Shield

Which WiFi shield do you have? You can post a link to where you bought it from.

luemar:
Library not valid, no header files (.h) found in my sketch.

This has nothing to do with your problem. It's just a warning that there is a non-library in a libraries folder. That won't actually cause any problems. The warning is a bit annoying to see all the time though, so if you want to fix the warning, just move the folder anywhere else other than the libraries folder. The warning will tell you the location of the problematic folder. But again, that will do nothing to solve your problem since it's unrelated.