Why does the website no longer work?

Using Arduino Programming Questions
1

The code itself has no errors, but when I try to access the website, it no longer loads. It used to work but stopped working some time during March. It this just an update that changed the way that setting up websites?
Here's the code:

//Libraries
#include "esp_camera.h"
#include <WiFi.h>
#include "esp_wifi.h"
#include "esp_timer.h"
#include "img_converters.h"
#include "Arduino.h"
#include "fb_gfx.h"
#include "soc/soc.h"             // disable brownout problems
#include "soc/rtc_cntl_reg.h"    // disable brownout problems
#include "esp_http_server.h"
#include <esp_now.h>
int int_value = 0;
// WiFi Password
const char *ssid1 = "***REDACTED***";
const char *password1 = "***REDACTED***";
//ESP32-WROOM MAC ADDRESS
uint8_t broadcastAddress[] = { 0xE0, 0x5A, 0x1B, 0xAC, 0x5A, 0xF8 };
#define PART_BOUNDARY "123456789000000000000987654321"
#define 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 LED_BUILTIN       4
  #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
//ESP NOW
typedef struct struct_message {
  int b;
} struct_message;
struct_message myData;
esp_now_peer_info_t peerInfo;
void OnDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) {
  Serial.print("\r\nLast Packet Send Status:\t");
  Serial.println(status == ESP_NOW_SEND_SUCCESS ? "Delivery Success" : "Delivery Fail");
}
static const char* _STREAM_CONTENT_TYPE = "multipart/x-mixed-replace;boundary=" PART_BOUNDARY;
static const char* _STREAM_BOUNDARY = "\r\n--" PART_BOUNDARY "\r\n";
static const char* _STREAM_PART = "Content-Type: image/jpeg\r\nContent-Length: %u\r\n\r\n";


httpd_handle_t camera_httpd = NULL;
httpd_handle_t stream_httpd = NULL;


static const char PROGMEM INDEX_HTML[] = R"rawliteral(
<html>
  <head>
    <title>Vinnie</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
      body { font-family: Arial; text-align: center; margin:0px auto; padding-top: 30px;}
      table { margin-left: auto; margin-right: auto; }
      td { padding: 8 px; }
      .button {
        background-color: #8563e7;
        border: none;
        color: white;
        padding: 10px 20px;
        text-align: center;
        text-decoration: none;
        display: inline-block;
        font-size: 18px;
        margin: 6px 3px;
        cursor: pointer;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
        -webkit-tap-highlight-color: rgba(0,0,0,0);
      }
      img {  width: auto ;
        max-width: 100% ;
        height: auto ;
      }
    </style>
  </head>
  <body>
    <h1>Walking Exploration Robot</h1>
    <img src="" id="photo" >
    <table>
      <tr><td colspan="3" align="center"><button class="button" onmousedown="toggleCheckbox('forward');" ontouchstart="toggleCheckbox('forward');" onmouseup="toggleCheckbox('stop');" ontouchend="toggleCheckbox('stop');">Forward</button></td></tr>
      <tr><td align="center"><button class="button" onmousedown="toggleCheckbox('left');" ontouchstart="toggleCheckbox('left');" onmouseup="toggleCheckbox('stop');" ontouchend="toggleCheckbox('stop');">Left</button></td><td align="center"><button class="button" onmousedown="toggleCheckbox('stop');" ontouchstart="toggleCheckbox('stop');">Stop</button></td><td align="center"><button class="button" onmousedown="toggleCheckbox('right');" ontouchstart="toggleCheckbox('right');" onmouseup="toggleCheckbox('stop');" ontouchend="toggleCheckbox('stop');">Right</button></td></tr>
      <tr><td colspan="3" align="center"><button class="button" onmousedown="toggleCheckbox('backward');" ontouchstart="toggleCheckbox('backward');" onmouseup="toggleCheckbox('stop');" ontouchend="toggleCheckbox('stop');">Backward</button></td></tr>                  
      <tr><td></td><td align="center"><button class="button button4" id="flash" onmousedown="toggleCheckbox('flash');" ontouchstart="toggleCheckbox('flash');" onmouseup="toggleCheckbox('flashoff');" ontouchend="toggleCheckbox('flashoff');">Flash</button></td><td></td></tr>
    </table>
   <script>
   function toggleCheckbox(x) {
     var xhr = new XMLHttpRequest();
     xhr.open("GET", "/action?go=" + x, true);
     xhr.send();
   }
   window.onload = document.getElementById("photo").src = window.location.href.slice(0, -1) + ":81/stream";
  </script>
  </body>
</html>
)rawliteral";


static esp_err_t index_handler(httpd_req_t *req){
  httpd_resp_set_type(req, "text/html");
  return httpd_resp_send(req, (const char *)INDEX_HTML, strlen(INDEX_HTML));
}


static esp_err_t stream_handler(httpd_req_t *req){
  camera_fb_t * fb = NULL;
  esp_err_t res = ESP_OK;
  size_t _jpg_buf_len = 0;
  uint8_t * _jpg_buf = NULL;
  char * part_buf[64];


  res = httpd_resp_set_type(req, _STREAM_CONTENT_TYPE);
  if(res != ESP_OK){
    return res;
  }


  while(true){
    fb = esp_camera_fb_get();
    if (!fb) {
      Serial.println("Camera capture failed");
      res = ESP_FAIL;
    } else {
      if(fb->width > 400){
        if(fb->format != PIXFORMAT_JPEG){
          bool jpeg_converted = frame2jpg(fb, 80, &_jpg_buf, &_jpg_buf_len);
          esp_camera_fb_return(fb);
          fb = NULL;
          if(!jpeg_converted){
            Serial.println("JPEG compression failed");
            res = ESP_FAIL;
          }
        } else {
          _jpg_buf_len = fb->len;
          _jpg_buf = fb->buf;
        }
      }
    }
    if(res == ESP_OK){
      size_t hlen = snprintf((char *)part_buf, 64, _STREAM_PART, _jpg_buf_len);
      res = httpd_resp_send_chunk(req, (const char *)part_buf, hlen);
    }
    if(res == ESP_OK){
      res = httpd_resp_send_chunk(req, (const char *)_jpg_buf, _jpg_buf_len);
    }
    if(res == ESP_OK){
      res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY, strlen(_STREAM_BOUNDARY));
    }
    if(fb){
      esp_camera_fb_return(fb);
      fb = NULL;
      _jpg_buf = NULL;
    } else if(_jpg_buf){
      free(_jpg_buf);
      _jpg_buf = NULL;
    }
    if(res != ESP_OK){
      break;
    }
    //Serial.printf("MJPG: %uB\n",(uint32_t)(_jpg_buf_len));
  }
  return res;
}


static esp_err_t cmd_handler(httpd_req_t *req){
  char*  buf;
  size_t buf_len;
  char variable[32] = {0,};
 
  buf_len = httpd_req_get_url_query_len(req) + 1;
  if (buf_len > 1) {
    buf = (char*)malloc(buf_len);
    if(!buf){
      httpd_resp_send_500(req);
      return ESP_FAIL;
    }
    if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
      if (httpd_query_key_value(buf, "go", variable, sizeof(variable)) == ESP_OK) {
      } else {
        free(buf);
        httpd_resp_send_404(req);
        return ESP_FAIL;
      }
    } else {
      free(buf);
      httpd_resp_send_404(req);
      return ESP_FAIL;
    }
    free(buf);
  } else {
    httpd_resp_send_404(req);
    return ESP_FAIL;
  }


  sensor_t * s = esp_camera_sensor_get();
  int res = 0;
 
 
   if (!strcmp(variable, "flash")) {
    Serial.println("Flash On");
    pinMode(LED_BUILTIN, HIGH);


  } else if (!strcmp(variable, "flashoff")) {
    Serial.println("Flash Off");
    pinMode(LED_BUILTIN, LOW);
  }
   if(!strcmp(variable, "forward")) {
    Serial.println("Forward");
    int_value = 1;
    // Set values to send
    myData.b = int_value;
    // Send message via ESP-NOW
  esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *) &myData, sizeof(myData));
   
  if (result == ESP_OK) {
    Serial.println("Sending confirmed");
  }
  else {
    Serial.println("Sending error");
  }
  } else if (!strcmp(variable, "left")) {
    Serial.println("Left");
    int_value = 2;
    // Set values to send
    myData.b = int_value;
    // Send message via ESP-NOW
  esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *) &myData, sizeof(myData));
   
  if (result == ESP_OK) {
    Serial.println("Sending confirmed");
  }
  else {
    Serial.println("Sending error");
  }
  } else if (!strcmp(variable, "right")) {
    Serial.println("Right");
    int_value = 3;
    // Set values to send
    myData.b = int_value;
    // Send message via ESP-NOW
  esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *) &myData, sizeof(myData));
   
  if (result == ESP_OK) {
    Serial.println("Sending confirmed");
  }
  else {
    Serial.println("Sending error");
  }
  } else if (!strcmp(variable, "backward")) {
    Serial.println("Backward");
    int_value = 4;
    // Set values to send
    myData.b = int_value;
    // Send message via ESP-NOW
  esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *) &myData, sizeof(myData));
   
  if (result == ESP_OK) {
    Serial.println("Sending confirmed");
  }
  else {
    Serial.println("Sending error");
  }
  } else if (!strcmp(variable, "stop")) {
    Serial.println("Stop");
    int_value = 5;
    // Set values to send
    myData.b = int_value;
    // Send message via ESP-NOW
  esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *) &myData, sizeof(myData));
   
  if (result == ESP_OK) {
    Serial.println("Sending confirmed");
  }
  else {
    Serial.println("Sending error");
  }
  } else {
    res = -1;
  }


  if(res){
    return httpd_resp_send_500(req);
  }


  httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
  return httpd_resp_send(req, NULL, 0);
}


void startCameraServer(){
  httpd_config_t config = HTTPD_DEFAULT_CONFIG();
  config.server_port = 80;
  httpd_uri_t index_uri = {
    .uri       = "/",
    .method    = HTTP_GET,
    .handler   = index_handler,
    .user_ctx  = NULL
  };


  httpd_uri_t cmd_uri = {
    .uri       = "/action",
    .method    = HTTP_GET,
    .handler   = cmd_handler,
    .user_ctx  = NULL
  };
  httpd_uri_t stream_uri = {
    .uri       = "/stream",
    .method    = HTTP_GET,
    .handler   = stream_handler,
    .user_ctx  = NULL
  };
  if (httpd_start(&camera_httpd, &config) == ESP_OK) {
    httpd_register_uri_handler(camera_httpd, &index_uri);
    httpd_register_uri_handler(camera_httpd, &cmd_uri);
  }
  config.server_port += 1;
  config.ctrl_port += 1;
  if (httpd_start(&stream_httpd, &config) == ESP_OK) {
    httpd_register_uri_handler(stream_httpd, &stream_uri);
  }
}


void setup() {
  WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector
  Serial.begin(115200);
  Serial.setDebugOutput(false);
  // Set device as a Wi-Fi Station
  WiFi.mode(WIFI_STA);
  WiFi.softAP(ssid1, password1);
pinMode (LED_BUILTIN, OUTPUT);
  // Init ESP-NOW
  esp_now_init();
  if (esp_now_init() != ESP_OK) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }


  // Once ESPNow is successfully Init, we will register for Send CB to
  // get the status of Trasnmitted packet
  esp_now_register_send_cb(OnDataSent);


  // Register peer
  memcpy(peerInfo.peer_addr, broadcastAddress, 6);
  peerInfo.channel = 1;
  peerInfo.encrypt = false;


  // Add peer
  if (esp_now_add_peer(&peerInfo) != ESP_OK) {
    Serial.println("Failed to add peer");
    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;
 
  if(psramFound()){
    config.frame_size = FRAMESIZE_VGA;
    config.jpeg_quality = 10;
    config.fb_count = 2;
  } else {
    config.frame_size = FRAMESIZE_SVGA;
    config.jpeg_quality = 12;
    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);
    return;
  }
  // Wi-Fi connection
  WiFi.softAP(ssid1, password1);
  IPAddress myIP = WiFi.softAPIP();
  Serial.print("AP IP address: ");
  Serial.println(myIP);
  // Start streaming web server
  startCameraServer();
}


void loop() {
 
}
2

You need to also show the complete error log using code tags

3

Like I said, it has no errors. When I verify it, this is all that shows in the output

Sketch uses 1026417 bytes (32%) of program storage space. Maximum is 3145728 bytes.
Global variables use 56264 bytes (17%) of dynamic memory, leaving 271416 bytes for local variables. Maximum is 327680 bytes.

unless there's a separate complete error log that I don't know about, which could be very possible

4

My bad, show us the Serial monitor.

5

Here's what is in the serial monitor:

load:0x3fff0030,len:1448
load:0x40078000,len:14844
ho 0 tail 12 room 4
load:0x40080400,len:4
load:0x40080404,len:3356
entry 0x4008059c
E (621) camera: Camera probe failed with error 0x105(ESP_ERR_NOT_FOUND)
Camera init failed with error 0x105
6

Nothing to do with website, you have a camera probe failure, What board are you using?

7

ESP32 CAM AI Thinker

8

Your compile result could "have no errors" but show high memory usage... which is why you were asked to show it, and assuming would not find a memory issue.

9

That is the right board. I just tried it an can't upload, not sure why. I will try later, but I have something else to do first.

10

Ok, I got out one of my esp32-cam boards and fired up your sketch. It works, see pic.

Screenshot 2024-08-05 at 14.46.05
Screenshot 2024-08-05 at 14.46.05874×412 20.7 KB

12

Yep, just switched out the OV2640 for a differnet one and now it works, thank you!