NodeMCU ESP8266

Request

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <ArduinoJson.h>

#ifndef STASSID
#define STASSID "**********"
#define STAPSK  "**********"
#endif

#define termResistor A0

const char* ssid = STASSID;
const char* password = STAPSK;

ESP8266WebServer server(5000);

void handleRoot() {
  server.send(200, "text/plain", "hello from esp8266!");
}

void handleNotFound() {
  String message = "File Not Found\n\n";
  message += "URI: ";
  message += server.uri();
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET) ? "GET" : "POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";
  for (uint8_t i = 0; i < server.args(); i++) {
    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
  }
  server.send(404, "text/plain", message);
}

void setup(void) {
  pinMode(termResistor, INPUT);

  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  if (MDNS.begin("esp8266")) {
    Serial.println("MDNS responder started");
  }

  server.on("/", handleRoot);

  server.on("/data", []() {
    String webPage;

  // Allocate JsonBuffer
  // Use arduinojson.org/assistant to compute the capacity.
  StaticJsonBuffer<500> jsonBuffer;

  // Create the root object
  JsonObject& root = jsonBuffer.createObject();

  root["light"] = lightPercentage(); //Put Sensor value

  root.printTo(webPage);  //Store JSON in String variable
  server.send(200, "application/json", webPage);
  });

  server.onNotFound(handleNotFound);

  server.begin();
  Serial.println("HTTP server started");
}

int lightPercentage() {
  return map(analogRead(A0), 0, 1024, 0, 100);
}

void loop(void) {
  server.handleClient();
  MDNS.update();
}
lucasgrocha / dataSensor

ESP8266 #8

NodeMCU ESP8266

Request
