Se apro il seriale dice connesso pero se mi collego alla pagina sia in rete locale che da remoto rimane una schermata bianca... se levo quel pezzo di codice relativo al servizio di no ip funziona tutto perfettamente, comunque il pezzo di codice citato prima lo inserito nel loop
questo è lo sketch:
#include <SPI.h>
#include <Ethernet.h>
#include <SD.h>
// size of buffer used to capture HTTP requests
#define REQ_BUF_SZ 60
// MAC address from Ethernet shield sticker under board
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192, 168, 1, 26); // IP address, may need to change depending on network
EthernetServer server(80); // create a server at port 80
File webFile; // the web page file on the SD card
char HTTP_req[REQ_BUF_SZ] = {0}; // buffered HTTP request stored as null terminated string
char req_index = 0; // index into HTTP_req buffer
boolean LED_state[4] = {0}; // stores the states of the LEDs
void setup()
{
// disable Ethernet chip
pinMode(10, OUTPUT);
digitalWrite(10, HIGH);
Serial.begin(9600); // for debugging
// initialize SD card
Serial.println("Initializing SD card...");
if (!SD.begin(4)) {
Serial.println("ERROR - SD card initialization failed!");
return; // init failed
}
Serial.println("SUCCESS - SD card initialized.");
// check for index.htm file
if (!SD.exists("index.htm")) {
Serial.println("ERROR - Can't find index.htm file!");
return; // can't find index file
}
Serial.println("SUCCESS - Found index.htm file.");
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
Ethernet.begin(mac, ip); // initialize Ethernet device
server.begin(); // start to listen for clients
}
void loop()
{
EthernetClient client = server.available(); // try to get client
if (client.connect("dynupdate.no-ip.com", 80)) {
Serial.println("connesso");
client.println("GET /nic/update?hostname=NOMEHOST HTTP/1.0");
client.println("Host: dynupdate.no-ip.com");
client.println("Authorization: Basic UTENTE:PASSWDbase64");
client.println("User-Agent: arduino_ethernet/1.0 info@gmail.com");
client.println();
}
else
{
//Problemi nella connessione
Serial.println("connessione fallita!");
}
if (client) { // got client?
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) { // client data available to read
char c = client.read(); // read 1 byte (character) from client
// limit the size of the stored received HTTP request
// buffer first part of HTTP request in HTTP_req array (string)
// leave last element in array as 0 to null terminate string (REQ_BUF_SZ - 1)
if (req_index < (REQ_BUF_SZ - 1)) {
HTTP_req[req_index] = c; // save HTTP request character
req_index++;
}
// last line of client request is blank and ends with \n
// respond to client only after last line received
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
// remainder of header follows below, depending on if
// web page or XML page is requested
// Ajax request - send XML file
if (StrContains(HTTP_req, "ajax_inputs")) {
// send rest of HTTP header
client.println("Content-Type: text/xml");
client.println("Connection: keep-alive");
client.println();
SetLEDs();
// send XML file containing input states
XML_response(client);
}
else { // web page request
// send rest of HTTP header
client.println("Content-Type: text/html");
client.println("Connection: keep-alive");
client.println();
// send web page
webFile = SD.open("index.htm"); // open web page file
if (webFile) {
while(webFile.available()) {
client.write(webFile.read()); // send web page to client
}
webFile.close();
}
}
// display received HTTP request on serial port
Serial.print(HTTP_req);
// reset buffer index and all buffer elements to 0
req_index = 0;
StrClear(HTTP_req, REQ_BUF_SZ);
break;
}
// every line of text received from the client ends with \r\n
if (c == '\n') {
// last character on line of received text
// starting new line with next character read
currentLineIsBlank = true;
}
else if (c != '\r') {
// a text character was received from client
currentLineIsBlank = false;
}
} // end if (client.available())
} // end while (client.connected())
delay(1); // give the web browser time to receive the data
client.stop(); // close the connection
} // end if (client)
}
// checks if received HTTP request is switching on/off LEDs
// also saves the state of the LEDs
void SetLEDs(void)
{
// LED 1 (pin 6)
if (StrContains(HTTP_req, "LED1=1")) {
LED_state[0] = 1; // save LED state
digitalWrite(6, HIGH);
}
else if (StrContains(HTTP_req, "LED1=0")) {
LED_state[0] = 0; // save LED state
digitalWrite(6, LOW);
}
// LED 2 (pin 7)
if (StrContains(HTTP_req, "LED2=1")) {
LED_state[1] = 1; // save LED state
digitalWrite(7, HIGH);
}
else if (StrContains(HTTP_req, "LED2=0")) {
LED_state[1] = 0; // save LED state
digitalWrite(7, LOW);
}
// LED 3 (pin 8)
if (StrContains(HTTP_req, "LED3=1")) {
LED_state[2] = 1; // save LED state
digitalWrite(8, HIGH);
}
else if (StrContains(HTTP_req, "LED3=0")) {
LED_state[2] = 0; // save LED state
digitalWrite(8, LOW);
}
// LED 4 (pin 9)
if (StrContains(HTTP_req, "LED4=1")) {
LED_state[3] = 1; // save LED state
digitalWrite(9, HIGH);
}
else if (StrContains(HTTP_req, "LED4=0")) {
LED_state[3] = 0; // save LED state
digitalWrite(9, LOW);
}
}
// send the XML file with analog values, switch status
// and LED status
void XML_response(EthernetClient cl)
{
int analog_val; // stores value read from analog inputs
int count; // used by 'for' loops
int sw_arr[] = {2, 3, 5}; // pins interfaced to switches
cl.print("<?xml version = \"1.0\" ?>");
// checkbox LED states
// LED1
cl.print("<LED>");
if (LED_state[0]) {
cl.print("checked");
}
else {
cl.print("unchecked");
}
cl.println("</LED>");
// LED2
cl.print("<LED>");
if (LED_state[1]) {
cl.print("checked");
}
else {
cl.print("unchecked");
}
cl.println("</LED>");
// button LED states
// LED3
cl.print("<LED>");
if (LED_state[2]) {
cl.print("on");
}
else {
cl.print("off");
}
cl.println("</LED>");
// LED4
cl.print("<LED>");
if (LED_state[3]) {
cl.print("on");
}
else {
cl.print("off");
}
cl.println("</LED>");
cl.print("</inputs>");
}
// sets every element of str to 0 (clears array)
void StrClear(char *str, char length)
{
for (int i = 0; i < length; i++) {
str[i] = 0;
}
}
// searches for the string sfind in the string str
// returns 1 if string found
// returns 0 if string not found
char StrContains(char *str, char *sfind)
{
char found = 0;
char index = 0;
char len;
len = strlen(str);
if (strlen(sfind) > len) {
return 0;
}
while (index < len) {
if (str[index] == sfind[found]) {
found++;
if (strlen(sfind) == found) {
return 1;
}
}
else {
found = 0;
}
index++;
}
return 0;
}
Guglielmo .... Comunque nessuno sa come aiutarmi a risolvere il problema????
.