Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Allow for storing SSID and password, along with ability to reconnect. #1

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Allow for storing SSID and password, along with ability to reconnect. #1

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
326 changes: 184 additions & 142 deletions esp8266-setup.ino
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <WiFiClient.h>
#include "FS.h"

// Hostname
#define HOSTNAME "esp8266"
Expand All @@ -12,157 +13,193 @@ const char* ssid = "esp8266-setup";
// Create server
WiFiServer server(80);

// Multicast DNS responder
MDNSResponder mdns;

// Functions declaration
void connect_network(String wifiName, String wifiPassword);

// connect to a network given an SSID and password
// returns 0 on success and -1 on failure
int connect_network(String wifiName, String wifiPassword);

// gets the esp8266 connected under any circumstance
void getConnected();

// makes esp8266 an AP and scans for networks
void networkScan();

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("");
SPIFFS.begin();
}

void loop() {

// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
Serial.println("");
Serial.println("New client");
if(WiFi.status() != WL_CONNECTED)
getConnected();

}

void getConnected() {

// Wait for data from client to become available
while(client.connected() && !client.available()){
delay(1);
// keep track of whether or not we were able to get a successful connection
int success = -1;

// try to get the ssid and password stored on EEPROM (filesystem)
File ssidFile = SPIFFS.open("/ssid.txt", "r");
File passFile = SPIFFS.open("/pass.txt", "r");
if (ssidFile && passFile) {
Serial.print("Successfully opened files");
success = connect_network(ssidFile.readString(), passFile.readString());
}

ssidFile.close();
passFile.close();

// wait for a client to tell us SSID and password
while(success == -1) {

networkScan();

// Check if a client has connected
WiFiClient client = server.available();
while(!client)
client = server.available();
Serial.println("");
Serial.println("New client");

// 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");
// Wait for data from client to become available
while(client.connected() && !client.available()){
delay(1);
}

// Connect to other network
connect_network(wifiName, wifiPassword);

// Do other things
// Your code goes here
// Read the first line of the request
String req = client.readStringUntil('\r');
//Serial.println(req);
client.flush();

}
else {
// 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\">";

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";
// 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);

// save the SSID and password to EEPROM (filesystem)
File ssidFile = SPIFFS.open("/ssid.txt", "w");
File passFile = SPIFFS.open("/pass.txt", "w");

ssidFile.print(wifiName);
passFile.print(wifiPassword);

ssidFile.close();
passFile.close();

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 disconnected");
// Send the response to the client
client.print(s);
delay(100);
client.stop();
Serial.println("Client disonnected");

// Connect to other network
success = 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) {
void networkScan() {

// Create WiFi network
WiFi.mode(WIFI_AP);
WiFi.softAP(ssid);

// Start the server
server.begin();
Serial.println("Server started");
Serial.println(WiFi.softAPIP());

// 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("");
}

int connect_network(String wifiName, String wifiPassword) {

// Connect to other network
WiFi.mode(WIFI_STA);
Expand All @@ -171,21 +208,26 @@ void connect_network(String wifiName, String wifiPassword) {
const char* other_password = wifiPassword.c_str();

WiFi.begin(other_ssid, other_password);
Serial.println("");
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());
for(int tries = 0; tries < 30; tries++) {

if(WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
} else {
Serial.println("");
Serial.print("Connected to ");
Serial.println(other_ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
return 0;
}

// Start the server
server.begin();
Serial.println("Server started");
}
}

return -1;

}