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- /*
- Rui Santos
- Complete project details at https://RandomNerdTutorials.com/telegram-esp32-cam-photo-arduino/
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files.
- The above copyright notice and this permission notice shall be included in all
- copies or substantial portions of the Software.
- */
- #include <Arduino.h>
- #include <WiFi.h>
- #include <WiFiClientSecure.h>
- #include "soc/soc.h"
- #include "soc/rtc_cntl_reg.h"
- #include "esp_camera.h"
- #include <UniversalTelegramBot.h>
- #include <ArduinoJson.h>
- const char* ssid = "Asdf";
- const char* password = "11127261";
- // Initialize Telegram BOT
- String BOTtoken = "5393841147:AAHZFP5QcSuo6IGfMpVqDNSZ2J-Se1f_RqA"; // 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
- String CHAT_ID = "983851904";
- //Group
- //"-657811937";
- //Your ID
- //"983851904";
- bool sendPhoto = false;
- WiFiClientSecure clientTCP;
- UniversalTelegramBot bot(BOTtoken, clientTCP);
- #define camTrigger 12
- #define FLASH_LED_PIN 4
- bool flashState = LOW;
- //Checks for new messages every 1 second.
- int botRequestDelay = 1000;
- unsigned long lastTimeBotRan;
- //CAMERA_MODEL_AI_THINKER
- #define PWDN_GPIO_NUM 32
- #define RESET_GPIO_NUM -1
- #define XCLK_GPIO_NUM 0
- #define SIOD_GPIO_NUM 26
- #define SIOC_GPIO_NUM 27
- #define Y9_GPIO_NUM 35
- #define Y8_GPIO_NUM 34
- #define Y7_GPIO_NUM 39
- #define Y6_GPIO_NUM 36
- #define Y5_GPIO_NUM 21
- #define Y4_GPIO_NUM 19
- #define Y3_GPIO_NUM 18
- #define Y2_GPIO_NUM 5
- #define VSYNC_GPIO_NUM 25
- #define HREF_GPIO_NUM 23
- #define PCLK_GPIO_NUM 22
- void configInitCamera() {
- camera_config_t config;
- config.ledc_channel = LEDC_CHANNEL_0;
- config.ledc_timer = LEDC_TIMER_0;
- config.pin_d0 = Y2_GPIO_NUM;
- config.pin_d1 = Y3_GPIO_NUM;
- config.pin_d2 = Y4_GPIO_NUM;
- config.pin_d3 = Y5_GPIO_NUM;
- config.pin_d4 = Y6_GPIO_NUM;
- config.pin_d5 = Y7_GPIO_NUM;
- config.pin_d6 = Y8_GPIO_NUM;
- config.pin_d7 = Y9_GPIO_NUM;
- config.pin_xclk = XCLK_GPIO_NUM;
- config.pin_pclk = PCLK_GPIO_NUM;
- config.pin_vsync = VSYNC_GPIO_NUM;
- config.pin_href = HREF_GPIO_NUM;
- config.pin_sscb_sda = SIOD_GPIO_NUM;
- config.pin_sscb_scl = SIOC_GPIO_NUM;
- config.pin_pwdn = PWDN_GPIO_NUM;
- config.pin_reset = RESET_GPIO_NUM;
- config.xclk_freq_hz = 20000000;
- config.pixel_format = PIXFORMAT_JPEG;
- //init with high specs to pre-allocate larger buffers
- if (psramFound()) {
- config.frame_size = FRAMESIZE_UXGA;
- config.jpeg_quality = 10; //0-63 lower number means higher quality
- config.fb_count = 2;
- } else {
- config.frame_size = FRAMESIZE_SVGA;
- config.jpeg_quality = 12; //0-63 lower number means higher quality
- config.fb_count = 1;
- }
- // camera init
- esp_err_t err = esp_camera_init(&config);
- if (err != ESP_OK) {
- Serial.printf("Camera init failed with error 0x%x", err);
- delay(1000);
- ESP.restart();
- }
- // Drop down frame size for higher initial frame rate
- sensor_t * s = esp_camera_sensor_get();
- s->set_framesize(s, FRAMESIZE_CIF); // UXGA|SXGA|XGA|SVGA|VGA|CIF|QVGA|HQVGA|QQVGA
- }
- void handleNewMessages(int numNewMessages) {
- Serial.print("Handle New Messages: ");
- Serial.println(numNewMessages);
- for (int i = 0; i < numNewMessages; i++) {
- 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 interact with the ESP32-CAM \n";
- welcome += "/photo : takes a new photo\n";
- welcome += "/flash : toggles flash LED \n";
- bot.sendMessage(CHAT_ID, welcome, "");
- }
- if (text == "/flash") {
- flashState = !flashState;
- digitalWrite(FLASH_LED_PIN, flashState);
- Serial.println("Change flash LED state");
- }
- if (text == "/photo") {
- sendPhoto = true;
- Serial.println("New photo request");
- }
- }
- }
- String sendPhotoTelegram() {
- const char* myDomain = "api.telegram.org";
- String getAll = "";
- String getBody = "";
- camera_fb_t * fb = NULL;
- fb = esp_camera_fb_get();
- if (!fb) {
- Serial.println("Camera capture failed");
- delay(1000);
- ESP.restart();
- return "Camera capture failed";
- }
- Serial.println("Connect to " + String(myDomain));
- if (clientTCP.connect(myDomain, 443)) {
- Serial.println("Connection successful");
- String head = "--RandomNerdTutorials\r\nContent-Disposition: form-data; name=\"chat_id\"; \r\n\r\n" + CHAT_ID + "\r\n--RandomNerdTutorials\r\nContent-Disposition: form-data; name=\"photo\"; filename=\"esp32-cam.jpg\"\r\nContent-Type: image/jpeg\r\n\r\n";
- String tail = "\r\n--RandomNerdTutorials--\r\n";
- uint16_t imageLen = fb->len;
- uint16_t extraLen = head.length() + tail.length();
- uint16_t totalLen = imageLen + extraLen;
- clientTCP.println("POST /bot" + BOTtoken + "/sendPhoto HTTP/1.1");
- clientTCP.println("Host: " + String(myDomain));
- clientTCP.println("Content-Length: " + String(totalLen));
- clientTCP.println("Content-Type: multipart/form-data; boundary=RandomNerdTutorials");
- clientTCP.println();
- clientTCP.print(head);
- uint8_t *fbBuf = fb->buf;
- size_t fbLen = fb->len;
- for (size_t n = 0; n < fbLen; n = n + 1024) {
- if (n + 1024 < fbLen) {
- clientTCP.write(fbBuf, 1024);
- fbBuf += 1024;
- }
- else if (fbLen % 1024 > 0) {
- size_t remainder = fbLen % 1024;
- clientTCP.write(fbBuf, remainder);
- }
- }
- clientTCP.print(tail);
- esp_camera_fb_return(fb);
- int waitTime = 10000; // timeout 10 seconds
- long startTimer = millis();
- boolean state = false;
- while ((startTimer + waitTime) > millis()) {
- Serial.print(".");
- delay(100);
- while (clientTCP.available()) {
- char c = clientTCP.read();
- if (state == true) getBody += String(c);
- if (c == '\n') {
- if (getAll.length() == 0) state = true;
- getAll = "";
- }
- else if (c != '\r')
- getAll += String(c);
- startTimer = millis();
- }
- if (getBody.length() > 0) break;
- }
- clientTCP.stop();
- Serial.println(getBody);
- }
- else {
- getBody = "Connected to api.telegram.org failed.";
- Serial.println("Connected to api.telegram.org failed.");
- }
- return getBody;
- }
- void setup() {
- WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);
- // Init Serial Monitor
- Serial.begin(115200);
- pinMode(camTrigger, INPUT);
- // Set LED Flash as output
- pinMode(FLASH_LED_PIN, OUTPUT);
- digitalWrite(FLASH_LED_PIN, flashState);
- // Config and init the camera
- configInitCamera();
- // Connect to Wi-Fi
- WiFi.mode(WIFI_STA);
- Serial.println();
- Serial.print("Connecting to ");
- Serial.println(ssid);
- WiFi.begin(ssid, password);
- clientTCP.setCACert(TELEGRAM_CERTIFICATE_ROOT); // Add root certificate for api.telegram.org
- while (WiFi.status() != WL_CONNECTED) {
- Serial.print(".");
- delay(500);
- }
- Serial.println();
- Serial.print("ESP32-CAM IP Address: ");
- Serial.println(WiFi.localIP());
- }
- void loop() {
- if (sendPhoto || digitalRead(camTrigger)) {
- Serial.println("Preparing photo");
- sendPhotoTelegram();
- sendPhoto = false;
- }
- 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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