Telegram: Control ESP32 LED
參考來源 https://randomnerdtutorials.com/telegram-control-esp32-esp8266-nodemcu-outputs/
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <UniversalTelegramBot.h> // Universal Telegram Bot Library written by Brian Lough: https://github.com/witnessmenow/Universal-Arduino-Telegram-Bot
#include <ArduinoJson.h>
// Replace with your network credentials
const char* ssid = "Wokwi-GUEST";
const char* password = "";
// Initialize Telegram BOT
#define BOTtoken "8023906815:AAE0KApbm5N4g00VCvO57JWA_XKtbx6a4IXM"
#define BOTtoken "修改成自己的"
// 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 "7914652148469"
#define CHAT_ID "修改成自己的" WiFiClientSecure client;
UniversalTelegramBot bot(BOTtoken, client);
// Checks for new messages every 1 second.
int botRequestDelay = 1000;
unsigned long lastTimeBotRan;
const int ledPin = 2;
bool ledState = LOW;
// Handle what happens when you receive new messages
void handleNewMessages(int numNewMessages) {
Serial.println("handleNewMessages");
Serial.println(String(numNewMessages));
for (int i=0; i<numNewMessages; i++) {
// Chat id of the requester
String chat_id = String(bot.messages[i].chat_id);
if (chat_id != CHAT_ID){
bot.sendMessage(chat_id, "Unauthorized user", "");
continue;
}
// Print the received message
String text = bot.messages[i].text;
Serial.println(text);
String from_name = bot.messages[i].from_name;
if (text == "/start") {
String welcome = "Welcome, " + from_name + ".\n";
welcome += "Use the following commands to control your outputs.\n\n";
welcome += "/led_on to turn GPIO ON \n";
welcome += "/led_off to turn GPIO OFF \n";
welcome += "/state to request current GPIO state \n";
bot.sendMessage(chat_id, welcome, "");
}
if (text == "/led_on") {
bot.sendMessage(chat_id, "LED state set to ON", "");
ledState = HIGH;
digitalWrite(ledPin, ledState);
}
if (text == "/led_off") {
bot.sendMessage(chat_id, "LED state set to OFF", "");
ledState = LOW;
digitalWrite(ledPin, ledState);
}
if (text == "/state") {
if (digitalRead(ledPin)){
bot.sendMessage(chat_id, "LED is ON", "");
}
else{
bot.sendMessage(chat_id, "LED is OFF", "");
}
}
}
}
void setup() {
Serial.begin(115200);
#ifdef ESP8266
configTime(0, 0, "pool.ntp.org"); // get UTC time via NTP
client.setTrustAnchors(&cert); // Add root certificate for api.telegram.org
#endif
pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, ledState);
// Connect to Wi-Fi
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
#ifdef ESP32
client.setCACert(TELEGRAM_CERTIFICATE_ROOT); // Add root certificate for api.telegram.org
#endif
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi..");
}
// Print ESP32 Local IP Address
Serial.println(WiFi.localIP());
Serial.println("Start telegram Led control command");
}
void loop() {
if (millis() > lastTimeBotRan + botRequestDelay) {
int numNewMessages = bot.getUpdates(bot.last_message_received + 1);
while(numNewMessages) {
Serial.println("got response");
handleNewMessages(numNewMessages);
numNewMessages = bot.getUpdates(bot.last_message_received + 1);
}
lastTimeBotRan = millis();
}
}
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