Configuration server

setup.ino

#include "wifitemp.h"

void setupServer() {
  delay(1000);
  
  Serial.println();
  Serial.print("Configuring access point...");

  const char *ssid = "wifi-temp";
  const char *password = "wifi-temp";
  
  WiFi.softAP(ssid, password);
  IPAddress myIP = WiFi.softAPIP();
  Serial.print("AP IP address: ");
  Serial.println(myIP);
  Serial.print("Sensor ID: ");
  Serial.println(ESP.getChipId());
  Serial.println("HTTP server started. Configure with below HTTP request.");
  Serial.print("GET ");
  Serial.print(myIP);
  Serial.println("/?ssid=<SSID>&password=<PASSWORD>");
  
  server.on("/", handleConfig);
  server.begin();
}

void handleConfig() {
  handleStringConfig("ssid").toCharArray(conf.wifiSsid, sizeof(conf.wifiSsid) - 1);
  handleStringConfig("password").toCharArray(conf.wifiPassword, sizeof(conf.wifiPassword) - 1);
  server.send(200, "text/html", "<h1>OK!</h1>");
  storeEeprom();
}

String handleStringConfig(String param) {
  if (server.arg(param) == "") {
    server.send(200, "text/html", "<h1>Missing parameter: " + param + "</h1>");
    return "";
  } else {
    return server.arg(param);
  }
}