ESP32 DHT22 + Telegram 加入 /status 指令回傳目前溫濕度

ESP32 DHT22 + Telegram   

加入 /status 指令回傳目前溫濕度

//僅當溫濕度有變化時才傳送至 Telegram

//加入 /status 指令回傳目前溫濕度

#include <WiFi.h>

#include <WiFiClientSecure.h>

#include <UniversalTelegramBot.h>

#include <DHT.h>

// WiFi 資訊

const char* ssid = "Wokwi-GUEST";

const char* password = "";

// Telegram Bot 資訊

// Initialize Telegram BOT

#define BOT_TOKEN "8023906815:AAE0KApbm5Ng00VCvO57JWA_XKtbx6a4IXM"  

// your Bot Token (Get from Botfather)

// Use @myidbot to find out the chat ID of an individual or a group

// Also note that you need to click "start" on a bot before it can

// message you

#define CHAT_ID "7965218469"

// DHT 感測器設定

#define DHTPIN 15         // GPIO15 可更換

#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

// Telegram 通訊

WiFiClientSecure secured_client;

UniversalTelegramBot bot(BOT_TOKEN, secured_client);

// 發送時間控制

unsigned long lastSendTime = 0;

const unsigned long sendInterval = 3000; // 3 秒

// 新增儲存上一筆數據的變數

float lastTemp = NAN;

float lastHum = NAN;

int botRequestDelay = 1000;

unsigned long lastTimeBotRan;

//===========================================================

void setup() {

  Serial.begin(115200);

  dht.begin();

  // 連接 WiFi

  WiFi.begin(ssid, password);

  Serial.print("連線中");

  while (WiFi.status() != WL_CONNECTED) {

    delay(500);

    Serial.print(".");

  }

  Serial.println("\nWiFi 已連線");

  // 啟用不安全連線（略過 SSL 憑證驗證）

  secured_client.setInsecure();

  // 初始訊息

  bot.sendMessage(CHAT_ID, "ESP32 啟動完成，開始回報溫濕度。", "");

}

//===========================================================

void loop() {

  // 處理指令

  if (millis() - lastTimeBotRan > botRequestDelay) {

    int numNewMessages = bot.getUpdates(bot.last_message_received + 1);

    while (numNewMessages) {

      for (int i = 0; i < numNewMessages; i++) {

        String text = bot.messages[i].text;

        String chat_id = bot.messages[i].chat_id;

        if (text == "/status") {

          float t = dht.readTemperature();

          float h = dht.readHumidity();

          if (isnan(t) || isnan(h)) {

            bot.sendMessage(chat_id, "讀取感測器失敗", "");

          } else {

            String msg = "目前環境數據：\n";

            msg += "溫度：" + String(t, 1) + " °C\n";

            msg += "濕度：" + String(h, 1) + " %";

            bot.sendMessage(chat_id, msg, "");

          }

        }

      }

      numNewMessages = bot.getUpdates(bot.last_message_received + 1);

    }

    lastTimeBotRan = millis();

  }

  // 可搭配定時更新或僅處理指令

}

//===========================================================