You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
139 lines
3.9 KiB
139 lines
3.9 KiB
5 years ago
|
/*
|
||
|
|
WiFi Web Server
|
||
|
|
|
||
|
|
A simple web server that shows the value of the analog input pins.
|
||
|
|
using a WiFi shield.
|
||
|
|
|
||
|
|
This example is written for a network using WPA encryption. For
|
||
|
|
WEP or WPA, change the Wifi.begin() call accordingly.
|
||
|
|
|
||
|
|
Circuit:
|
||
|
|
* WiFi shield attached
|
||
|
|
* Analog inputs attached to pins A0 through A5 (optional)
|
||
|
|
|
||
|
|
created 13 July 2010
|
||
|
|
by dlf (Metodo2 srl)
|
||
|
|
modified 31 May 2012
|
||
|
|
by Tom Igoe
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <SPI.h>
|
||
|
|
#include <WiFi.h>
|
||
|
|
|
||
|
|
|
||
|
|
char ssid[] = "yourNetwork"; // your network SSID (name)
|
||
|
|
char pass[] = "secretPassword"; // your network password
|
||
|
|
int keyIndex = 0; // your network key Index number (needed only for WEP)
|
||
|
|
|
||
|
|
int status = WL_IDLE_STATUS;
|
||
|
|
|
||
|
|
WiFiServer server(80);
|
||
|
|
|
||
|
|
void setup() {
|
||
|
|
//Initialize serial and wait for port to open:
|
||
|
|
Serial.begin(9600);
|
||
|
|
while (!Serial) {
|
||
|
|
; // wait for serial port to connect. Needed for native USB port 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);
|
||
|
|
}
|
||
|
|
|
||
|
|
String fv = WiFi.firmwareVersion();
|
||
|
|
if (fv != "1.1.0") {
|
||
|
|
Serial.println("Please upgrade the firmware");
|
||
|
|
}
|
||
|
|
|
||
|
|
// 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);
|
||
|
|
}
|
||
|
|
server.begin();
|
||
|
|
// you're connected now, so print out the status:
|
||
|
|
printWifiStatus();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void loop() {
|
||
|
|
// listen for incoming clients
|
||
|
|
WiFiClient client = server.available();
|
||
|
|
if (client) {
|
||
|
|
Serial.println("new client");
|
||
|
|
// an http request ends with a blank line
|
||
|
|
boolean currentLineIsBlank = true;
|
||
|
|
while (client.connected()) {
|
||
|
|
if (client.available()) {
|
||
|
|
char c = client.read();
|
||
|
|
Serial.write(c);
|
||
|
|
// if you've gotten to the end of the line (received a newline
|
||
|
|
// character) and the line is blank, the http request has ended,
|
||
|
|
// so you can send a reply
|
||
|
|
if (c == '\n' && currentLineIsBlank) {
|
||
|
|
// send a standard http response header
|
||
|
|
client.println("HTTP/1.1 200 OK");
|
||
|
|
client.println("Content-Type: text/html");
|
||
|
|
client.println("Connection: close"); // the connection will be closed after completion of the response
|
||
|
|
client.println("Refresh: 5"); // refresh the page automatically every 5 sec
|
||
|
|
client.println();
|
||
|
|
client.println("<!DOCTYPE HTML>");
|
||
|
|
client.println("<html>");
|
||
|
|
// output the value of each analog input pin
|
||
|
|
for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
|
||
|
|
int sensorReading = analogRead(analogChannel);
|
||
|
|
client.print("analog input ");
|
||
|
|
client.print(analogChannel);
|
||
|
|
client.print(" is ");
|
||
|
|
client.print(sensorReading);
|
||
|
|
client.println("<br />");
|
||
|
|
}
|
||
|
|
client.println("</html>");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (c == '\n') {
|
||
|
|
// you're starting a new line
|
||
|
|
currentLineIsBlank = true;
|
||
|
|
} else if (c != '\r') {
|
||
|
|
// you've gotten a character on the current line
|
||
|
|
currentLineIsBlank = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// give the web browser time to receive the data
|
||
|
|
delay(1);
|
||
|
|
|
||
|
|
// close the connection:
|
||
|
|
client.stop();
|
||
|
|
Serial.println("client disonnected");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
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");
|
||
|
|
}
|
||
|
|
|