Esp 32 cam not working

knpl · January 31, 2023, 8:01am

Dear Team.
I have working with a Esp 32 cam survilance robot car.
After uploading code in esp 32 cam motors works fine but camera not works,kindly help

horace · January 31, 2023, 8:05am

have a read of how-to-get-the-best-out-of-this-forum
e.g. give details of what arduino you are using, the motors, motor drive module, etc
upload a schematic of the wiring including details of power supplies
upload your code using code tags </>

red_car · January 31, 2023, 8:24am

I think the the code you uploaded caused the camera to stop working.

If we could only see the code ???

knpl · January 31, 2023, 8:43am

#include <WebSocketsServer.h>
#include <WiFi.h>
#include <SPIFFS.h>
#include <FS.h>
#include <ESPAsyncWebServer.h>
#include "camera_wrap.h"

#define DEBUG
// #define SAVE_IMG

const char* ssid = "your ssid"; // <<< change this as yours
const char* password = "your ssid password"; // <<< change this as yours
//holds the current upload
int cameraInitState = -1;
uint8_t* jpgBuff = new uint8_t[68123];
size_t jpgLength = 0;
uint8_t camNo=0;
bool clientConnected[3] = {false,false,false};

WebSocketsServer webSocket = WebSocketsServer(86);
AsyncWebServer httpServer(80);
String html_home;

const int PIN_SERVO = 12;
const int PIN_LED = 2;
const int SERVO_RESOLUTION = 16;
unsigned long previousMillisServo = 0;
const unsigned long intervalServo = 100;
bool reqUp = false;
bool reqDown = false;
int posServo = 90;
uint8_t angleMax = 180;

void setup(void) {

Serial.begin(115200);
Serial.print("\n");
Serial.setDebugOutput(true);

if (!SPIFFS.begin(true)) {
Serial.println("An Error has occurred while mounting SPIFFS");
ESP.restart();
}
else {
delay(500);
Serial.println("SPIFFS mounted successfully");
File root = SPIFFS.open("/");
File file = root.openNextFile();
while(file){
Serial.print("FILE: ");
Serial.println(file.name());
file = root.openNextFile();
}
}

cameraInitState = initCamera();

Serial.printf("camera init state %d\n", cameraInitState);

if(cameraInitState != 0){
return;
}

//WIFI INIT
Serial.printf("Connecting to %s\n", ssid);
if (String(WiFi.SSID()) != String(ssid)) {
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
}

while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected! IP address: ");
String ipAddress = WiFi.localIP().toString();;
Serial.println(ipAddress);
// handle index
// Route for root / web page
httpServer.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/index.html");
});
//handle icons load
httpServer.on("/icons/led_on.png", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/icons/led_on.png", "image/png");
});
httpServer.on("/icons/led_off.png", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/icons/led_off.png", "image/png");
});
httpServer.on("/icons/move_off.png", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/icons/move_off.png", "image/png");
});
httpServer.on("/icons/pick_on.png", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/icons/pick_on.png", "image/png");
});
httpServer.on("/icons/pick_off.png", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/icons/pick_off.png", "image/png");
});
httpServer.on("/icons/up_on.png", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/icons/up_on.png", "image/png");
});
httpServer.on("/icons/up_off.png", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/icons/up_off.png", "image/png");
});
httpServer.on("/icons/down_on.png", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/icons/down_on.png", "image/png");
});
httpServer.on("/icons/down_off.png", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/icons/down_off.png", "image/png");
});
//handle command
httpServer.on("/MOVE", HTTP_GET, [](AsyncWebServerRequest *request){
commadProcessing(request);
request->send(200, "text/plain");
});
httpServer.on("/LED", HTTP_GET, [](AsyncWebServerRequest *request){
commadProcessing(request);
request->send(200, "text/plain");
});
httpServer.on("/PICK", HTTP_GET, [](AsyncWebServerRequest *request){
commadProcessing(request);
request->send(200, "text/plain");
});
httpServer.on("/UP", HTTP_GET, [](AsyncWebServerRequest *request){
commadProcessing(request);
request->send(200, "text/plain");
});
httpServer.on("/DOWN", HTTP_GET, [](AsyncWebServerRequest *request){
commadProcessing(request);
request->send(200, "text/plain");
});

httpServer.begin();
webSocket.begin();
webSocket.onEvent(webSocketEvent);

// 1. 50hz ==> period = 20ms (sg90 servo require 20ms pulse, duty cycle is 1->2ms: -90=>90degree)
// 2. resolution = 16, maximum value is 2^16-1=65535
// From 1 and 2 => -90=>90 degree or 0=>180degree ~ 3276=>6553
ledcSetup(4, 50, SERVO_RESOLUTION);//channel, freq, resolution
ledcAttachPin(PIN_SERVO, 4);// pin, channel

pinMode(PIN_LED, OUTPUT);
}

void servoWrite(uint8_t channel, uint8_t value) {
// regarding the datasheet of sg90 servo, pwm period is 20 ms and duty is 1->2ms
uint32_t maxDuty = (pow(2,SERVO_RESOLUTION)-1)/10;
uint32_t minDuty = (pow(2,SERVO_RESOLUTION)-1)/20;
uint32_t duty = (maxDuty-minDuty)*angle/180 + minDuty;
ledcWrite(channel, duty);
}

void controlServo(){
if(reqUp){
if(posServo<180){
posServo -= 1;
}
}
if(reqDown){
if(posServo>0){
posServo += 1;
}
}

servoWrite(4,posServo);
}

void commadProcessing(AsyncWebServerRequest *request){
String value = request->getParam(0)->value();
String url = request->url();
if(url.indexOf("UP")!=-1){
if(value.indexOf("ON")!=-1){
reqUp = true;
}else if(value.indexOf("OFF")!=-1){
reqUp = false;
}
}else if(url.indexOf("DOWN")!=-1){
if(value.indexOf("ON")!=-1){
reqDown = true;
}else if(value.indexOf("OFF")!=-1){
reqDown = false;
}
}else if(url.indexOf("LED")!=-1){
if(value.indexOf("ON")!=-1){
digitalWrite(PIN_LED, HIGH);
}else if(value.indexOf("OFF")!=-1){
digitalWrite(PIN_LED, LOW);
}
}else{
String command = url+":"+value+"\n";
Serial.print(command);
}

}

void webSocketEvent(uint8_t num, WStype_t type, uint8_t * payload, size_t length) {

switch(type) {
case WStype_DISCONNECTED:
Serial.printf("[%u] Disconnected!\n", num);
if(num<3){
camNo = num;
clientConnected[num] = false;
String command = "/MOVE:0,0";
Serial.print(command);
}
break;
case WStype_CONNECTED:
if(num<3){
clientConnected[num] = true;
}
break;
case WStype_TEXT:
case WStype_BIN:
case WStype_ERROR:
case WStype_FRAGMENT_TEXT_START:
case WStype_FRAGMENT_BIN_START:
case WStype_FRAGMENT:
case WStype_FRAGMENT_FIN:
break;
}
}

void loop(void) {
webSocket.loop();
if(clientConnected[camNo] == true){
grabImage(jpgLength, jpgBuff);
webSocket.sendBIN(camNo, jpgBuff, jpgLength);
}

unsigned long currentMillis = millis();
if (currentMillis - previousMillisServo >= intervalServo) {
previousMillisServo = currentMillis;
controlServo();
}
}

red_car · January 31, 2023, 8:54am

Check post #2... especially this bit.

By using code tags you make it much easier for people trying to copy your code, so they can help debug.

knpl · January 31, 2023, 9:45am

/*
BSD 2-Clause License

Copyright (c) 2020, ANM-P4F
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include <WebSocketsServer.h>
#include <WiFi.h>
#include <SPIFFS.h>
#include <FS.h>
#include <ESPAsyncWebServer.h>
#include "camera_wrap.h"

#define DEBUG
// #define SAVE_IMG

const char* ssid = "your ssid";    // <<< change this as yours
const char* password = "your ssid password"; // <<< change this as yours
//holds the current upload
int cameraInitState = -1;
uint8_t* jpgBuff = new uint8_t[68123];
size_t   jpgLength = 0;
uint8_t camNo=0;
bool clientConnected[3] = {false,false,false};

WebSocketsServer webSocket = WebSocketsServer(86);
AsyncWebServer httpServer(80);
String html_home;

const int PIN_SERVO   = 12;
const int PIN_LED     = 2;
const int SERVO_RESOLUTION    = 16;
unsigned long previousMillisServo = 0;
const unsigned long intervalServo = 100;
bool reqUp = false;
bool reqDown = false;
int posServo = 90;
uint8_t angleMax = 180;

void setup(void) {

  Serial.begin(115200);
  Serial.print("\n");
  Serial.setDebugOutput(true);

  if (!SPIFFS.begin(true)) {
    Serial.println("An Error has occurred while mounting SPIFFS");
    ESP.restart();
  }
  else {
    delay(500);
    Serial.println("SPIFFS mounted successfully");
    File root = SPIFFS.open("/");
    File file = root.openNextFile();
    while(file){
      Serial.print("FILE: ");
      Serial.println(file.name());
      file = root.openNextFile();
    }
  }

  cameraInitState = initCamera();

  Serial.printf("camera init state %d\n", cameraInitState);

  if(cameraInitState != 0){
    return;
  }

  //WIFI INIT
  Serial.printf("Connecting to %s\n", ssid);
  if (String(WiFi.SSID()) != String(ssid)) {
    WiFi.mode(WIFI_STA);
    WiFi.begin(ssid, password);
  }

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected! IP address: ");
  String ipAddress = WiFi.localIP().toString();;
  Serial.println(ipAddress);
  // handle index
  // Route for root / web page
  httpServer.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/index.html");
  });
  //handle icons load
  httpServer.on("/icons/led_on.png", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/icons/led_on.png", "image/png");
  });
  httpServer.on("/icons/led_off.png", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/icons/led_off.png", "image/png");
  });
  httpServer.on("/icons/move_off.png", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/icons/move_off.png", "image/png");
  });
  httpServer.on("/icons/pick_on.png", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/icons/pick_on.png", "image/png");
  });
  httpServer.on("/icons/pick_off.png", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/icons/pick_off.png", "image/png");
  });
  httpServer.on("/icons/up_on.png", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/icons/up_on.png", "image/png");
  });
  httpServer.on("/icons/up_off.png", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/icons/up_off.png", "image/png");
  });
  httpServer.on("/icons/down_on.png", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/icons/down_on.png", "image/png");
  });
  httpServer.on("/icons/down_off.png", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/icons/down_off.png", "image/png");
  });
  //handle command 
  httpServer.on("/MOVE", HTTP_GET, [](AsyncWebServerRequest *request){
    commadProcessing(request);
    request->send(200, "text/plain");
  });
  httpServer.on("/LED", HTTP_GET, [](AsyncWebServerRequest *request){
    commadProcessing(request);
    request->send(200, "text/plain");
  });
  httpServer.on("/PICK", HTTP_GET, [](AsyncWebServerRequest *request){
    commadProcessing(request);
    request->send(200, "text/plain");
  });
  httpServer.on("/UP", HTTP_GET, [](AsyncWebServerRequest *request){
    commadProcessing(request);
    request->send(200, "text/plain");
  });
  httpServer.on("/DOWN", HTTP_GET, [](AsyncWebServerRequest *request){
    commadProcessing(request);
    request->send(200, "text/plain");
  });

  httpServer.begin();
  webSocket.begin();
  webSocket.onEvent(webSocketEvent);

  // 1. 50hz ==> period = 20ms (sg90 servo require 20ms pulse, duty cycle is 1->2ms: -90=>90degree)
  // 2. resolution = 16, maximum value is 2^16-1=65535
  // From 1 and 2 => -90=>90 degree or 0=>180degree ~ 3276=>6553
  ledcSetup(4, 50, SERVO_RESOLUTION);//channel, freq, resolution
  ledcAttachPin(PIN_SERVO, 4);// pin, channel

  pinMode(PIN_LED, OUTPUT);
}

void servoWrite(uint8_t channel, uint8_t value) {
  // regarding the datasheet of sg90 servo, pwm period is 20 ms and duty is 1->2ms
  uint32_t maxDuty = (pow(2,SERVO_RESOLUTION)-1)/10; 
  uint32_t minDuty = (pow(2,SERVO_RESOLUTION)-1)/20; 
  uint32_t duty = (maxDuty-minDuty)*angle/180 + minDuty;
  ledcWrite(channel, duty);
}

void controlServo(){
  if(reqUp){
    if(posServo<180){
      posServo -= 1;
    }
  }
  if(reqDown){
    if(posServo>0){
      posServo += 1;
    }
  }
  
  servoWrite(4,posServo);
}

void commadProcessing(AsyncWebServerRequest *request){
  String value = request->getParam(0)->value();
  String url   = request->url();
  if(url.indexOf("UP")!=-1){
    if(value.indexOf("ON")!=-1){
      reqUp = true;
    }else if(value.indexOf("OFF")!=-1){
      reqUp = false;
    }
  }else if(url.indexOf("DOWN")!=-1){
    if(value.indexOf("ON")!=-1){
      reqDown = true;
    }else if(value.indexOf("OFF")!=-1){
      reqDown = false;
    }
  }else if(url.indexOf("LED")!=-1){
    if(value.indexOf("ON")!=-1){
      digitalWrite(PIN_LED, HIGH);
    }else if(value.indexOf("OFF")!=-1){
      digitalWrite(PIN_LED, LOW);
    }
  }else{
    String command = url+":"+value+"\n";
    Serial.print(command);
  }

}

void webSocketEvent(uint8_t num, WStype_t type, uint8_t * payload, size_t length) {

  switch(type) {
      case WStype_DISCONNECTED:
          Serial.printf("[%u] Disconnected!\n", num);
          if(num<3){
            camNo = num;
            clientConnected[num] = false;
            String command = "/MOVE:0,0";
            Serial.print(command);
          }
          break;
      case WStype_CONNECTED:
          if(num<3){
            clientConnected[num] = true;
          }
          break;
      case WStype_TEXT:
      case WStype_BIN:
      case WStype_ERROR:      
      case WStype_FRAGMENT_TEXT_START:
      case WStype_FRAGMENT_BIN_START:
      case WStype_FRAGMENT:
      case WStype_FRAGMENT_FIN:
          break;
  }
}

void loop(void) {
  webSocket.loop();
  if(clientConnected[camNo] == true){
    grabImage(jpgLength, jpgBuff);
    webSocket.sendBIN(camNo, jpgBuff, jpgLength);
  }

  unsigned long currentMillis = millis();
  if (currentMillis - previousMillisServo >= intervalServo) {
    previousMillisServo = currentMillis;
    controlServo();
  }
}

Idahowalker · January 31, 2023, 9:51am

USE CODE TAGS WHEN POSTING CODE!

If the OP would note the posted code in this message and the error the OP posts do not jive. If the camera failed to initialize then setup() would do a return and WiFi would not be done, nor the HTTP server, nor the LEDC API.

SP

Help us help you.

Please follow the advice given in this link How to get the best out of this forum when posting code, in particular the section entitled 'Posting code and common code problems'.

Images of code suck.

Use code tags (the </> icon above the compose window) to make it easier to read and copy code for examination

Use the IDE autoformat tool (ctrl-t or Tools, Auto format) before posting code in code tags.

Images of error messages suck.

Code snippets suck.

Include the entire error message. It is easy to do. There is a button (lower right of the IDE window) called "copy error message". Copy the error and paste into a post in code tags. Paraphrasing the error message leaves out important information.

Post a schematic.

Post an image of your project.

Which Micro Controller are you using?

Is this simulator code?

Please describe the problem better then you just did.

system · July 30, 2023, 9:51am

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.

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