87 lines
3.5 KiB
C++
87 lines
3.5 KiB
C++
#include <WiFi.h> //Wifi library
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#include "esp_wpa2.h" //wpa2 library for connections to Enterprise networks
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#define EAP_IDENTITY "login" //if connecting from another corporation, use identity@organisation.domain in Eduroam
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#define EAP_USERNAME "login" //oftentimes just a repeat of the identity
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#define EAP_PASSWORD "password" //your Eduroam password
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const char* ssid = "eduroam"; // Eduroam SSID
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const char* host = "arduino.php5.sk"; //external server domain for HTTP connection after authentification
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int counter = 0;
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// NOTE: For some systems, various certification keys are required to connect to the wifi system.
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// Usually you are provided these by the IT department of your organization when certs are required
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// and you can't connect with just an identity and password.
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// Most eduroam setups we have seen do not require this level of authentication, but you should contact
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// your IT department to verify.
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// You should uncomment these and populate with the contents of the files if this is required for your scenario (See Example 2 and Example 3 below).
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//const char *ca_pem = "insert your CA cert from your .pem file here";
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//const char *client_cert = "insert your client cert from your .crt file here";
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//const char *client_key = "insert your client key from your .key file here";
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void setup() {
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Serial.begin(115200);
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delay(10);
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Serial.println();
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Serial.print("Connecting to network: ");
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Serial.println(ssid);
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WiFi.disconnect(true); //disconnect form wifi to set new wifi connection
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WiFi.mode(WIFI_STA); //init wifi mode
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// Example1 (most common): a cert-file-free eduroam with PEAP (or TTLS)
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WiFi.begin(ssid, WPA2_AUTH_PEAP, EAP_IDENTITY, EAP_USERNAME, EAP_PASSWORD);
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// Example 2: a cert-file WPA2 Enterprise with PEAP
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//WiFi.begin(ssid, WPA2_AUTH_PEAP, EAP_IDENTITY, EAP_USERNAME, EAP_PASSWORD, ca_pem, client_cert, client_key);
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// Example 3: TLS with cert-files and no password
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//WiFi.begin(ssid, WPA2_AUTH_TLS, EAP_IDENTITY, NULL, NULL, ca_pem, client_cert, client_key);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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counter++;
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if(counter>=60){ //after 30 seconds timeout - reset board
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ESP.restart();
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}
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}
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Serial.println("");
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Serial.println("WiFi connected");
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Serial.println("IP address set: ");
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Serial.println(WiFi.localIP()); //print LAN IP
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}
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void loop() {
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if (WiFi.status() == WL_CONNECTED) { //if we are connected to Eduroam network
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counter = 0; //reset counter
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Serial.println("Wifi is still connected with IP: ");
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Serial.println(WiFi.localIP()); //inform user about his IP address
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}else if (WiFi.status() != WL_CONNECTED) { //if we lost connection, retry
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WiFi.begin(ssid);
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}
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while (WiFi.status() != WL_CONNECTED) { //during lost connection, print dots
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delay(500);
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Serial.print(".");
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counter++;
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if(counter>=60){ //30 seconds timeout - reset board
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ESP.restart();
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}
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}
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Serial.print("Connecting to website: ");
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Serial.println(host);
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WiFiClient client;
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if (client.connect(host, 80)) {
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String url = "/rele/rele1.txt";
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client.print(String("GET ") + url + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "User-Agent: ESP32\r\n" + "Connection: close\r\n\r\n");
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while (client.connected()) {
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String line = client.readStringUntil('\n');
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if (line == "\r") {
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break;
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}
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}
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String line = client.readStringUntil('\n');
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Serial.println(line);
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}else{
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Serial.println("Connection unsucessful");
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}
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}
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