Configuration

#include #include #include #include #include "esp_mac.h" //ver 1.03 // Constants for Access Point mode const char* ap_ssid = "ESP32-AP"; const char* ap_password = "12345678"; // Pin definitions const int userLedPin = 8; const int buttonPin = 0; const int relayPins[4] = {10, 11, 22, 23}; const int inputPins[4] = {1, 2, 3, 15}; // Create a WebServer on port 80 WebServer server(80); // Variables to store WiFi settings String ssid, password, static_ip, netmask, gateway, dns, hostname; String logServerIP, logServerPort; bool isAPMode = false; // Variable to keep track of the last log time unsigned long lastLogTime = 0; // Function to send logs to the log server void sendLog(String message) { if (WiFi.status() == WL_CONNECTED && logServerIP.length() > 0 && logServerPort.length() > 0) { HTTPClient http; String url = "http://" + logServerIP + ":" + logServerPort + "/log"; http.begin(url); http.addHeader("Content-Type", "application/json"); String payload = "{\"hostname\": \"" + hostname + "\", \"ip_address\": \"" + WiFi.localIP().toString() + "\", \"message\": \"" + message + "\"}"; int httpResponseCode = http.POST(payload); http.end(); if (httpResponseCode > 0) { Serial.println("Log sent successfully: " + message); } else { Serial.println("Error sending log: " + message); } } } // Handle the root URL ("/") and serve the configuration page void handleRoot() { String macAddress = getDefaultMacAddress(); String html = "Configuration"; html += ""; if (isAPMode) { html += "

Board Configuration

"; html += "

"; } html += ""; server.send(200, "text/html", html); } // Handle the save URL ("/save") and save the WiFi settings void handleSave() { ssid = server.arg("ssid"); password = server.arg("password"); static_ip = server.arg("static_ip"); netmask = server.arg("netmask"); gateway = server.arg("gateway"); dns = server.arg("dns"); hostname = server.arg("hostname"); logServerIP = server.arg("log_server_ip"); logServerPort = server.arg("log_server_port"); saveSettings(); server.send(200, "text/html", "Settings saved. Device will restart in client mode."); delay(2000); ESP.restart(); } // Handle the relay control URL ("/relay") and control the relays void handleRelay() { int relay = server.arg("relay").toInt() - 1; // Adjust for zero-based index String action = server.arg("action"); if (relay >= 0 && relay < 4) { if (action == "on") { digitalWrite(relayPins[relay], HIGH); sendLog("Relay " + String(relay + 1) + " turned ON"); } else if (action == "off") { digitalWrite(relayPins[relay], LOW); sendLog("Relay " + String(relay + 1) + " turned OFF"); } } server.sendHeader("Location", "/"); server.send(303); } // Save the WiFi settings to EEPROM void saveSettings() { EEPROM.writeString(0, ssid); EEPROM.writeString(32, password); EEPROM.writeString(64, static_ip); EEPROM.writeString(96, netmask); EEPROM.writeString(128, gateway); EEPROM.writeString(160, dns); EEPROM.writeString(192, hostname); EEPROM.writeString(224, logServerIP); EEPROM.writeString(256, logServerPort); EEPROM.commit(); } // Load the WiFi settings from EEPROM void loadSettings() { ssid = EEPROM.readString(0); password = EEPROM.readString(32); static_ip = EEPROM.readString(64); netmask = EEPROM.readString(96); gateway = EEPROM.readString(128); dns = EEPROM.readString(160); hostname = EEPROM.readString(192); logServerIP = EEPROM.readString(224); logServerPort = EEPROM.readString(256); } // Get the default MAC address of the ESP32 String getDefaultMacAddress() { String mac = ""; unsigned char mac_base[6] = {0}; if (esp_efuse_mac_get_default(mac_base) == ESP_OK) { char buffer[18]; sprintf(buffer, "%02X:%02X:%02X:%02X:%02X:%02X", mac_base[0], mac_base[1], mac_base[2], mac_base[3], mac_base[4], mac_base[5]); mac = buffer; } return mac; } void setup() { Serial.begin(115200); EEPROM.begin(512); pinMode(userLedPin, OUTPUT); digitalWrite(userLedPin, LOW); pinMode(buttonPin, INPUT_PULLUP); for (int i = 0; i < 4; i++) { pinMode(relayPins[i], OUTPUT); digitalWrite(relayPins[i], LOW); pinMode(inputPins[i], INPUT_PULLUP); } loadSettings(); WiFi.softAPdisconnect(true); if (digitalRead(buttonPin) == LOW || ssid.length() == 0) { startAPMode(); } else { connectToWiFi(); } } void loop() { server.handleClient(); if (millis() - lastLogTime >= 30000) { sendLog("Board is functioning"); lastLogTime = millis(); } } void startAPMode() { WiFi.softAP(ap_ssid, ap_password); Serial.println("Access Point Started"); Serial.print("IP Address: "); Serial.println(WiFi.softAPIP()); server.on("/", handleRoot); server.on("/save", handleSave); server.on("/relay", handleRelay); server.begin(); isAPMode = true; } void connectToWiFi() { IPAddress ip, gw, nm, dnsServer; if (!ip.fromString(static_ip) || !gw.fromString(gateway) || !nm.fromString(netmask) || !dnsServer.fromString(dns)) { startAPMode(); return; } WiFi.config(ip, gw, nm, dnsServer); WiFi.setHostname(hostname.c_str()); WiFi.begin(ssid.c_str(), password.c_str()); unsigned long startTime = millis(); while (WiFi.status() != WL_CONNECTED) { if (millis() - startTime >= 10000) { startAPMode(); return; } delay(500); } Serial.println("Connected to WiFi."); Serial.print("IP Address: "); Serial.println(WiFi.localIP()); Serial.print("Hostname: "); Serial.println(WiFi.getHostname()); digitalWrite(userLedPin, HIGH); isAPMode = false; startWebServer(); } void startWebServer() { server.on("/", handleRoot); server.on("/save", handleSave); server.on("/relay", handleRelay); server.begin(); } void blinkLed() { static unsigned long lastBlinkTime = 0; static bool ledState = LOW; unsigned long interval = isAPMode ? 1000 : 3000; if (millis() - lastBlinkTime >= interval) { ledState = !ledState; digitalWrite(userLedPin, ledState); lastBlinkTime = millis(); } }