ESP32 DHT22 + Telegram start - 開始對話 help - 顯示指令清單 status - 查詢目前溫濕度 mute - 暫停自動變化通知 resume - 恢復自動變化通知

ESP32 DHT22 + Telegram

Telegram Bot 指令列表

/start - 開始對話

/help - 顯示指令清單

/status - 查詢目前溫濕度

/mute - 暫停自動變化通知

/resume - 恢復自動變化通知

//  /start - 開始對話

//  /help - 顯示指令清單

//  /status - 查詢目前溫濕度

//  /mute - 暫停自動變化通知

//  /resume - 恢復自動變化通知

#include <WiFi.h>

#include <WiFiClientSecure.h>

#include <UniversalTelegramBot.h>

#include <DHT.h>

// WiFi 設定

const char* ssid = "Wokwi-GUEST";

const char* password = "";

// Telegram Bot 資訊

// Initialize Telegram BOT

#define BOT_TOKEN "80231906815:A1AE0KApbm5Ng00VCvO57JWA_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 "791652118469"

// DHT22 設定

#define DHTPIN 15

#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

// Telegram 設定

WiFiClientSecure secured_client;

UniversalTelegramBot bot(BOT_TOKEN, secured_client);

// 時間控制

unsigned long lastSendTime = 0;

const unsigned long sendInterval = 3000;

unsigned long lastBotCheck = 0;

const unsigned long botCheckInterval = 1000;

// 上一次的溫濕度值

float lastTemp = NAN;

float lastHum = NAN;

// 是否啟用變化通報

bool notifyEnabled = true;

void setup() {

  Serial.begin(115200);

  dht.begin();

  WiFi.begin(ssid, password);

  Serial.print("WiFi 連線中");

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

    delay(500);

    Serial.print(".");

  }

  Serial.println("\nWiFi 已連線！");

  Serial.println(WiFi.localIP());

  // Telegram SSL 憑證略過

  secured_client.setInsecure();

  Serial.println("\nESP32 開機完成，監控啟動中！");

  bot.sendMessage(CHAT_ID, "ESP32 開機完成，監控啟動中！", "");

}

void loop() {

  unsigned long now = millis();

  // 1. 溫濕度變化通知（僅當啟用）

  if (notifyEnabled && (now - lastSendTime >= sendInterval)) {

    lastSendTime = now;

    float t = dht.readTemperature();

    float h = dht.readHumidity();

    if (isnan(t) || isnan(h)) {

      Serial.println("讀取 DHT22 失敗");

      return;

    }

    if (t != lastTemp || h != lastHum) {

      lastTemp = t;

      lastHum = h;

      String msg = "溫濕度變化：\n";

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

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

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

      Serial.println("變化 -> 傳送");

      Serial.println(msg);

    }

  }

  // 2. 處理 Telegram 指令

  if (now - lastBotCheck >= botCheckInterval) {

    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;

        String user_name = bot.messages[i].from_name;

        if (text == "/start") {

          String welcome = "哈囉 " + user_name + "，我是 ESP32 環境監控 Bot！\n";

          welcome += "輸入 /help 查看可用指令。";

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

        }

        else if (text == "/help") {

          String helpMsg = "**可用指令：**\n";

          helpMsg += "/start - 開始對話\n";

          helpMsg += "/help - 顯示指令說明\n";

          helpMsg += "/status - 查詢目前溫濕度\n";

          helpMsg += "/mute - 暫停變化通知\n";

          helpMsg += "/resume - 恢復變化通知";

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

        }

        else 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，請稍後再試。", "");

          } 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, "");

          }

        }

        else if (text == "/mute") {

          notifyEnabled = false;

          bot.sendMessage(chat_id, "變化通知已暫停。", "");

        }

        else if (text == "/resume") {

          notifyEnabled = true;

          bot.sendMessage(chat_id, "變化通知已恢復。", "");

        }

        else {

          bot.sendMessage(chat_id, "無效指令，請輸入 /help 查看可用指令。", "");

        }

      }

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

    }

    lastBotCheck = now;

  }

}