ERROR: core.a(main.cpp.o): In function `main'

Projects Programming
1

Hi,
i seem to have an error.
can someone help me?
running arduino uno

code:

#include <WiFi.h>
#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

char ssid[] = "WebCube42-AC55";
char pass[] = "B4F59852";
int status = WL_IDLE_STATUS;

void setup() {

Serial.begin(9600);
while (!Serial) {
;
}

if (WiFi.status() == WL_NO_SHIELD) {
void setup ();{

lcd.begin(16, 2);

lcd.print("WiFi shield not present");
delay(1000);

while(true);
}

while ( status != WL_CONNECTED) {
Serial.print("Attempting to connect to WPA SSID: ");
lcd.print(ssid);
status = WiFi.begin(ssid, pass);

}

lcd.print("You're connected to the network");

}

void printWifiData(); {
IPAddress ip = WiFi.localIP();
lcd.print("IP Address: ");
lcd.println(ip);

}
}

error:

core.a(main.cpp.o): In function main': /Applications/Arduino.app/Contents/Resources/Java/hardware/arduino/cores/arduino/main.cpp:14: undefined reference to loop'

2

Where is the loop() function? All the sketches must have one loop() function.

3

hi luisilva,
where do i put the loop() function?

4

To be completely honest with you, I don't understand very well you code, but for what I understand, I will do:

#include <WiFi.h>
#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

char ssid[] = "WebCube42-AC55";   
char pass[] = "B4F59852"; 
int status = WL_IDLE_STATUS;

void setup() {
  lcd.begin(16, 2); 
  Serial.begin(9600);
  while (!Serial) {
    ;
  }
}

void loop() {
  if (WiFi.status() == WL_NO_SHIELD) { 

    lcd.print("WiFi shield not present");
    delay(1000);

    while(true);
  }

  while ( status != WL_CONNECTED) {
    Serial.print("Attempting to connect to WPA SSID: ");
    lcd.print(ssid);
    status = WiFi.begin(ssid, pass);

  }

  lcd.print("You're connected to the network");

}

void printWifiData() {
  IPAddress ip = WiFi.localIP();
  lcd.print("IP Address: ");
  lcd.println(ip);

}

or:

#include <WiFi.h>
#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

char ssid[] = "WebCube42-AC55";   
char pass[] = "B4F59852"; 
int status = WL_IDLE_STATUS;

void setup() {
  lcd.begin(16, 2); 
  Serial.begin(9600);
}

void loop() {
  while (!Serial) {
    ;
  }
  if (WiFi.status() == WL_NO_SHIELD) { 

    lcd.print("WiFi shield not present");
    delay(1000);

    while(true);
  }

  while ( status != WL_CONNECTED) {
    Serial.print("Attempting to connect to WPA SSID: ");
    lcd.print(ssid);
    status = WiFi.begin(ssid, pass);

  }

  lcd.print("You're connected to the network");

}


void printWifiData() {
  IPAddress ip = WiFi.localIP();
  lcd.print("IP Address: ");
  lcd.println(ip);

}

or:

#include <WiFi.h>
#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

char ssid[] = "WebCube42-AC55";   
char pass[] = "B4F59852"; 
int status = WL_IDLE_STATUS;

void setup() {
  lcd.begin(16, 2); 
  Serial.begin(9600);

  while (!Serial) {
    ;
  }
  if (WiFi.status() == WL_NO_SHIELD) { 

    lcd.print("WiFi shield not present");
    delay(1000);

    while(true);
  }

  while ( status != WL_CONNECTED) {
    Serial.print("Attempting to connect to WPA SSID: ");
    lcd.print(ssid);
    status = WiFi.begin(ssid, pass);

  }

  lcd.print("You're connected to the network");

}

void loop() {
}


void printWifiData() {
  IPAddress ip = WiFi.localIP();
  lcd.print("IP Address: ");
  lcd.println(ip);

}