Send data/captured image from ESP32CAM/ESP8266 to Firebase

 

Send data/captured image from ESP32CAM/ESP8266 to Firebase

Code:

const char* ssid = "Aish";

const char* password = "1234567788";

String FIREBASE_HOST = "Get Firebase host and auth from this link";

String FIREBASE_AUTH = "youtube.com/watch?v=1kqj7sWDslY&t=1s(get database from this link)";

#include "FirebaseESP32.h"

FirebaseData firebaseData;

#include <WiFi.h>

#include "soc/soc.h"

#include "soc/rtc_cntl_reg.h"

#include "Base64.h"

#include "esp_camera.h"

// WARNING!!! Make sure that you have either selected ESP32 Wrover Module,

//            or another board which has PSRAM enabled

//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 setup() { 

  WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);

    

  Serial.begin(115200);

  Serial.setDebugOutput(true);

  Serial.println();

  Serial.println("ssid: " + (String)ssid);

  Serial.println("password: " + (String)password);

  

  WiFi.begin(ssid, password);

  long int StartTime=millis();

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

      delay(500);

      if ((StartTime+10000) < millis()) break;

  } 

  if (WiFi.status() == WL_CONNECTED) {

    char* apssid = "ESP32-CAM";

    char* appassword = "12345678";         //AP password require at least 8 characters.

    Serial.println(""); 

    Serial.print("Camera Ready! Use 'http://");

    Serial.print(WiFi.localIP());

    Serial.println("' to connect");

    WiFi.softAP((WiFi.localIP().toString()+"_"+(String)apssid).c_str(), appassword);            

  }

  else {

    Serial.println("Connection failed");

    return;

  } 

  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_QQVGA);  // VGA|CIF|QVGA|HQVGA|QQVGA   ( UXGA? SXGA? XGA? SVGA? )

 

  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);

  Firebase.reconnectWiFi(true);

  Firebase.setMaxRetry(firebaseData, 3);

  Firebase.setMaxErrorQueue(firebaseData, 30); 

  Firebase.enableClassicRequest(firebaseData, true);

  String jsonData = "{\"photo\":\"" + Photo2Base64() + "\"}";

  String photoPath = "/esp32-cam";

  if (Firebase.pushJSON(firebaseData, photoPath, jsonData)) {

    Serial.println(firebaseData.dataPath());

    Serial.println(firebaseData.pushName());

    Serial.println(firebaseData.dataPath() + "/"+ firebaseData.pushName());

  } else {

    Serial.println(firebaseData.errorReason());

  }

} 

 

void loop() { 

  delay(10000);

}

String Photo2Base64() {

    camera_fb_t * fb = NULL;

    fb = esp_camera_fb_get();  

    if(!fb) {

      Serial.println("Camera capture failed");

      return "";

    }

  

    String imageFile = "data:image/jpeg;base64,";

    char *input = (char *)fb->buf;

    char output[base64_enc_len(3)];

    for (int i=0;i<fb->len;i++) {

      base64_encode(output, (input++), 3);

      if (i%3==0) imageFile += urlencode(String(output));

    }

    esp_camera_fb_return(fb);

    

    return imageFile;

}

//https://github.com/zenmanenergy/ESP8266-Arduino-Examples/

String urlencode(String str)

{

    String encodedString="";

    char c;

    char code0;

    char code1;

    char code2;

    for (int i =0; i < str.length(); i++){

      c=str.charAt(i);

      if (c == ' '){

        encodedString+= '+';

      } else if (isalnum(c)){

        encodedString+=c;

      } else{

        code1=(c & 0xf)+'0';

        if ((c & 0xf) >9){

            code1=(c & 0xf) - 10 + 'A';

        }

        c=(c>>4)&0xf;

        code0=c+'0';

        if (c > 9){

            code0=c - 10 + 'A';

        }

        code2='\0';

        encodedString+='%';

        encodedString+=code0;

        encodedString+=code1;

        //encodedString+=code2;

      }

      yield();

    }

    return encodedString;

}