esp nodemcu version 4
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//Includes
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#include <DHT.h>
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#include <ESP8266WiFi.h>
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#include <ESP8266WebServer.h>
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#include <WiFiClientSecure.h>
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#include <ESP8266HTTPClient.h>
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#include <ArduinoJson.h>
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#include <EEPROM.h>
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#include <FS.h>
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#include "ESP8266httpUpdate.h"
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//Variables
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const char* ssidServer = "";
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const char* paswServer = "";
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String ssid = "";
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String pasw = "";
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String apiToken = "";
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const int httpsPort = 443;
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const char* host = "http://dev.steelants.cz";
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const char* url = "/vasek/home/api.php";
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const char* fingerprint = "";
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const char* host2 = "dev.steelants.cz";
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const char* url2 = "/vasek/home/update.php";
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String content;
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bool conf = false;
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bool buttonActive = false;
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int state = 0;
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String requestJson = "";
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int unsuccessfulRounds = 0; //Unsucesful atmpt counter
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ESP8266WebServer server(80);
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StaticJsonDocument<250> jsonContent;
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DeserializationError error;
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//Pins
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#define pinDHT 4
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#define LIGHTPIN 13
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//Inicializations
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DHT DHTs(pinDHT, DHT11);
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void setup() {
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Serial.begin(9600);
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EEPROM.begin(100);
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while (!Serial) continue;
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delay(10);
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//read saved data
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ssid = ReadEeprom(1, 33);
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pasw = ReadEeprom(33, 65);
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apiToken = ReadEeprom(65, 97);
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//set pins
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pinMode(LIGHTPIN, INPUT);
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//wifi
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if (ssid != "") {
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WiFi.disconnect();
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WiFi.softAPdisconnect(true);
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WiFi.persistent(false);
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WiFi.mode(WIFI_STA);
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WiFi.begin(ssid, pasw);
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conf = wifiVerify(20);
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if (conf) {
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configTime(3 * 3600, 0, "pool.ntp.org");
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WiFiClientSecure client;
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Serial.print("connecting to ");
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Serial.println(host2);
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client.setInsecure();
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if (!client.connect(host2, httpsPort)) {
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Serial.println("connection failed");
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return;
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}
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if (client.verify(fingerprint, host2)) {
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Serial.println("certificate matches");
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} else {
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Serial.println("certificate doesn't match");
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return;
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}
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Serial.print("Starting OTA from: ");
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Serial.println(url2
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);
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auto ret = ESPhttpUpdate.update(client, host2, 80, url2);
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delay(500);
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switch(ret) {
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case HTTP_UPDATE_FAILED:
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Serial.printf("HTTP_UPDATE_FAILD Error (%d): %s", ESPhttpUpdate.getLastError(), ESPhttpUpdate.getLastErrorString().c_str());
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Serial.println();
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Serial.println();
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Serial.println();
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break;
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case HTTP_UPDATE_NO_UPDATES:
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Serial.println("HTTP_UPDATE_NO_UPDATES");
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Serial.println();
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Serial.println();
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break;
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case HTTP_UPDATE_OK:
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Serial.println("HTTP_UPDATE_OK");
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Serial.println();
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Serial.println();
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Serial.println();
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break;
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}
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delay(500);
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jsonContent = {};
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jsonContent["token"] = apiToken;
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jsonContent["settings"]["network"]["ip"] = WiFi.localIP().toString();
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jsonContent["settings"]["network"]["mac"] = WiFi.macAddress();
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sendDataToWeb();
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return;
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}
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}
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setupAP();
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}
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void loop() {
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if (conf) {
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if (unsuccessfulRounds >= 5) {
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Serial.println("RESTARTING ESP");
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ESP.restart();
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}
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DHTs.begin();
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jsonContent = {};
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jsonContent["token"] = apiToken;
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requestJson = "";
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//Read and Handle DHT values
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float tem = DHTs.readTemperature();
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float hum = DHTs.readHumidity();
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Serial.println("TEMP" + String(tem) + ";HUMI" + String(hum));
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if (isnan(tem) || isnan(hum)) {
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Serial.println("Unable to read DHT");
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} else {
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jsonContent["values"]["temp"]["value"] = tem;
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jsonContent["values"]["temp"]["unit"] = "C";
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jsonContent["values"]["humi"]["value"] = hum;
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jsonContent["values"]["humi"]["unit"] = "%";
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}
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//Handle Photo Rezistor Values
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jsonContent["values"]["light"]["value"] = (String)!digitalRead(LIGHTPIN);
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jsonContent["values"]["light"]["unit"] = "";
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sendDataToWeb();
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loadDataFromWeb();
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} else {
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server.handleClient();
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}
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}
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void handleInterrupt() {
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buttonActive = true;
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state = !state;
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digitalWrite(RELAY, state);
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}
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bool wifiVerify(int t) {
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int c = 0;
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Serial.println("Waiting for Wifi to connect to Shelly1");
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while (c < t) {
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if (WiFi.status() == WL_CONNECTED) {
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c = t;
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return true;
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}
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delay(500);
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Serial.print(WiFi.status());
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c++;
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}
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return false;
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}
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void loadDataFromWeb() {
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if (error.code() != DeserializationError::Ok) {
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Serial.println(error.c_str());
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unsuccessfulRounds++;
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Serial.println("UNSUCCESSFUL ROUND NUMBER " + String(unsuccessfulRounds) + "FROM 5");
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error = DeserializationError::Ok;
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return;
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}
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//configuration setup
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int sleepTime = jsonContent["device"]["sleepTime"];
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String hostName = jsonContent["device"]["hostname"];
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String requestState = jsonContent["state"];
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if (requestState != "succes") {
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unsuccessfulRounds++;
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Serial.println("UNSUCCESSFUL ROUND NUMBER " + String(unsuccessfulRounds) + "FROM 5");
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} else if (requestState == "succes") {
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unsuccessfulRounds = 0;
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}
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WiFi.hostname(hostName);
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sleep(sleepTime);
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}
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void sendDataToWeb() {
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serializeJson(jsonContent, requestJson);
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Serial.println("JSON: " + requestJson);
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error = deserializeJson(jsonContent, sendHttpRequest());
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}
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void sleep(int sleepTime) {
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if (sleepTime > 0) { //if deep sleepTime > 0 use deep sleep
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Serial.println("GOING TO SLEEP FOR " + String(sleepTime));
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ESP.deepSleep((sleepTime * 60) * 1000000, RF_DEFAULT);
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} else {
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delay(5000);
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}
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}
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String sendHttpRequest () {
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HTTPClient http;
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http.setReuse(true);
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Serial.println("HTTP url: " + String(host) + String(url) + ""); //Print HTTP return code
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http.begin(String(host) + String(url));
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http.addHeader("Content-Type", "text/plain"); //Specify content-type header
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Serial.println("HTTP request: " + String(requestJson) + ""); //Print HTTP return code
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int httpCode = http.POST(requestJson);
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String payload = http.getString(); //Get the response payload
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http.end();
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Serial.println("HTTP CODE: " + String(httpCode) + ""); //Print HTTP return code
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Serial.println("HTTP BODY: " + String(payload) + ""); //Print request response payload
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if (httpCode == -1) {
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unsuccessfulRounds++;
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Serial.println("UNSUCCESSFUL ROUND NUMBER " + String(unsuccessfulRounds) + "FROM 5");
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return "";
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}
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return payload;
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}
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void CleanEeprom() {
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for (int i = 1; i < 100; ++i) {
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EEPROM.write(i, 0);
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}
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}
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void WriteEeprom (String data, int start = 1) {
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for (int i = 0; i < data.length(); ++i)
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{
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EEPROM.write(start + i, data[i]);
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}
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EEPROM.commit();
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}
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String ReadEeprom(int min, int max) {
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String localString;
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for (int i = min; i < max; ++i) {
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localString += char(EEPROM.read(i));
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}
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return localString;
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}
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void createWeb()
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{
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server.on("/", []() {
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if (server.args() == 3) {
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ssid = server.arg("wifi-ssid");
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pasw = server.arg("wifi-pasw");
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apiToken = server.arg("apiToken");
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if (ssid != "" && pasw != "" && apiToken != "") {
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CleanEeprom();
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WriteEeprom(ssid);
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WriteEeprom(pasw, 33);
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WriteEeprom(apiToken, 65);
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server.send(200, "application/json", "Restarting esp");
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delay(500);
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ESP.restart();
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}
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}
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content = "<!DOCTYPE HTML><body>";
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content += "<head><style>";
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content += "html,body {height: 100%;}";
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content += "html {display: table;margin: auto;}";
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content += "body {display: table-cell;vertical-align: middle;}";
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content += "input {width: 100%;box-sizing: border-box}";
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content += "</style></head>";
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content += "<h2>WIFI Configuration</h2>";
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content += "<a href='#'>Refresh</a>";
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content += "<div class=\"wifi-list\">";
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int n = WiFi.scanNetworks();
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if (n == 0)
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content += "<label>No networks found...</label>";
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else
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{
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for (int i = 0; i < n; ++i)
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{
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content += "<a href=\"#\" onclick=\"fillSSID(this.innerHTML)\">" + WiFi.SSID(i) + "</a><br>";
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}
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}
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content += "</div>";
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content += "<form method='get' action=''><div class='wifi-form'>";
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content += "<label>SSID: </label><input name='wifi-ssid' id='wifi-ssid' length=32 type='text'><br>";
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content += "<label>Heslo: </label><input name='wifi-pasw' length=32 type='password'><br>";
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content += "<label>Api token: </label><input name='apiToken' length=32 type='password'><br>";
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content += "<input type='submit' value='Connect'>";
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content += "</div></form>";
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content += "<script>";
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content += "function fillSSID(value) {\r\n";
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content += "document.getElementById(\"wifi-ssid\").value = value;\r\n";
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content += "}";
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content += "</script>";
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content += "</body>";
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server.send(200, "text/html", content);
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});
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}
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void setupAP(void) {
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WiFi.mode(WIFI_STA);
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WiFi.disconnect();
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WiFi.softAPdisconnect(true);
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delay(100);
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int n = WiFi.scanNetworks();
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Serial.println("scan done");
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if (n == 0)
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Serial.println("no networks found");
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else
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{
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Serial.print(n);
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Serial.println(" networks found");
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for (int i = 0; i < n; ++i)
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{
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// Print SSID and RSSI for each network found
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Serial.print(i + 1);
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Serial.print(": ");
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Serial.print(WiFi.SSID(i));
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Serial.print(" (");
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Serial.print(WiFi.RSSI(i));
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Serial.print(")");
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Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE) ? " " : "*");
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delay(10);
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}
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}
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delay(100);
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WiFi.softAP(ssidServer, paswServer);
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Serial.println("softap");
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Serial.println("");
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Serial.println("WiFi connected");
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Serial.print("Local IP: ");
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Serial.println(WiFi.localIP());
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Serial.print("SoftAP IP: ");
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Serial.println(WiFi.softAPIP());
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createWeb();
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// Start the server
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server.begin();
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Serial.println("Server started");
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Serial.println("over");
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}
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