Hi.
Does the picture get uploaded to Firebase despite the error?
If you try other ESP32-CAM sketches do you still get a similar error?
Regards,
Sara

Hi Sara, 
The picture is not uploaded. And if I try other ESP32-CAM sketches, the problem does go away. The goal of the sketch is to wake the device up when motion is detected, take a picture, upload it to Firebase, and go back to sleep. One thing that is kinda weird is that problem seems to begin when I include <esp_sleep_enable_ext0_wakeup(GPIO_NUM_X, level)> to the sketch. 

Hi.
Can you share your complete code?
Otherwise, it’s very difficult to try to figure out the issue.
To share a code please upload it to github or pastebin and then share a link.
Regards,
Sar

Hi Sara, here is a link on paste bin https://pastebin.com/yicWyN2B,
 
The goal of the sketch is to upload a an image to a firebase server from an esp32 cam with a unique name so that I can send multiple images

Hi agian.
did you first try the original code?
Was it working? Or did it produce a similar error?
Regards,
Sara

The original was working 

Hi Jeremy,
I believe there are some issues with construction of  “FILE_PHOTO” String.
Observed in your code the keyword for “String” has a lower case “s”; change to upper case.
Changed “to.str(counter)”; to “String(counter)”.
Added a period in front of “jpg”.
Checked “FILE_PHOTO” String code in a simple sketch:

void setup() {

    int counter;
    Serial.begin(115200);
    String str1 = "/data/photo" ;
    String str2 = String(counter);
    String str3 = str1 + str2 + ".jpg";
    const char* FILE_PHOTO = str3.c_str();
    Serial.println(FILE_PHOTO);

}

void loop() {
  // put your main code here, to run repeatedly:

}

Serial.println(FILE_PHOTO); Result:  "/data/photo0.jpg"

Regards,

William

Thanks William I will give this a try!

Hi this still doesnt work. I am struggling to figure out how to upload multiple files to firebase still

Hi Jeremy,

Google’s Bard respondse to my prompt: Yes, it is possible to use the ESP32 CAM to upload multiple images in Arduino C++. Here is an example code:

#include <WiFi.h> 
#include <FirebaseESP32.h>

#define FIREBASE_HOST "your-project-id.firebaseio.com"
#define FIREBASE_AUTH "your-secret-key"

const char* ssid = "your-ssid";
const char* password = "your-password";

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");

  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
}

void loop() {
  // Take a picture with the ESP32 CAM
  camera_fb_t *fb = esp_camera_fb_get();
  if (fb == NULL) {
    Serial.println("Camera capture failed");
    return;
  }

  // Upload the picture to Firebase Storage
  String imagePath = "/images/image_" + String(millis()) + ".jpg";
  Firebase.Storage.putFile(imagePath, fb->buf, fb->len);

  // Release the camera frame
  esp_camera_fb_free(fb);

  // Delay for a few seconds before taking another picture
  delay(5000);
}

Maybe just a starting point; hope it helps.

Regards,
William