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esp8266-setup.ino
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esp8266-setup.ino
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// Libraries
#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <WiFiClient.h>
// Hostname
#define HOSTNAME "esp8266"
// WiFi network created by ESP8266
const char* ssid = "esp8266-setup";
// Create server
WiFiServer server(80);
// Multicast DNS responder
MDNSResponder mdns;
// Functions declaration
void connect_network(String wifiName, String wifiPassword);
void setup() {
// Start Serial port
Serial.begin(115200);
delay(10);
// Create WiFi network
WiFi.mode(WIFI_AP);
WiFi.softAP(ssid);
// Start the server
server.begin();
Serial.println("Server started");
Serial.println(WiFi.softAPIP());
// Start mDNS
if (!MDNS.begin(HOSTNAME)) {
Serial.println("Error setting up MDNS responder!");
while(1) {
delay(1000);
}
}
Serial.println("mDNS responder started");
// Add service to MDNS-SD
MDNS.addService("http", "tcp", 80);
// Look for networks
int n = WiFi.scanNetworks();
Serial.println("scan done");
if (n == 0)
Serial.println("no networks found");
else
{
Serial.print(n);
Serial.println(" networks found");
for (int i = 0; i < n; ++i)
{
// Print SSID and RSSI for each network found
Serial.print(i + 1);
Serial.print(": ");
Serial.print(WiFi.SSID(i));
Serial.print(" (");
Serial.print(WiFi.RSSI(i));
Serial.print(")");
Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE)?" ":"*");
delay(10);
}
}
Serial.println("");
}
void loop() {
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
Serial.println("");
Serial.println("New client");
// Wait for data from client to become available
while(client.connected() && !client.available()){
delay(1);
}
// Read the first line of the request
String req = client.readStringUntil('\r');
//Serial.println(req);
client.flush();
// Prepare the response
String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
s += "<html><head>";
// s += "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">";
// s += "<script src=\"https://code.jquery.com/jquery-2.1.3.min.js\"></script>";
// s += "<link rel=\"stylesheet\" href=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css\">";
s += "</head>";
s += "<body><div class=\"container\">";
// Match the request
if (req.indexOf("/login") != -1){
Serial.println("Connecting to local network");
// Parse response
String wifiNameParameter = "wifiName=";
String wifiPasswordParameter = "wifiPassword=";
int indexName = req.indexOf(wifiNameParameter);
int indexPassword = req.indexOf(wifiPasswordParameter);
int indexBoard = req.indexOf("board=");
String wifiName = req.substring(indexName + wifiNameParameter.length(), indexPassword - 1);
String wifiPassword = req.substring(indexPassword + wifiPasswordParameter.length(), indexBoard - 1);
Serial.print("WiFi name: ");
Serial.println(wifiName);
Serial.print("WiFi password: ");
Serial.println(wifiPassword);
// Build answer
s += "<div>Logged in!</div>";
s += "<div>Now please connect to the WiFi network called " + wifiName + "</div>";
s += "</div></body></html>\r\n";
// Send the response to the client
client.print(s);
delay(100);
client.stop();
Serial.println("Client disonnected");
// Connect to other network
connect_network(wifiName, wifiPassword);
// Do other things
// Your code goes here
}
else {
Serial.println("Serving interface");
s += "<div>WiFi name: <input type='text' id='wname'></div>";
s += "<div>WiFi password: <input type='text' id='pass'></div>";
s += "<div><input class=\"btn\" type=\"button\" value=\"Validate\" onclick=\"login()\"></div>";
s += "</div>";
s += "<script>function login() {";
s += "var wifiName = document.getElementById('wname').value;";
s += "var wifiPassword = document.getElementById('pass').value;";
s += "window.location.href = '/login?wifiName=' + wifiName + '&wifiPassword=' + wifiPassword + '&board=';}";
s += "</script>";
s += "</body></html>\r\n";
// Send the response to the client
client.print(s);
delay(100);
client.stop();
Serial.println("Client disconnected");
}
}
void connect_network(String wifiName, String wifiPassword) {
// Connect to other network
WiFi.mode(WIFI_STA);
const char* other_ssid = wifiName.c_str();
const char* other_password = wifiPassword.c_str();
WiFi.begin(other_ssid, other_password);
Serial.println("");
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(other_ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
// Start the server
server.begin();
Serial.println("Server started");
}