Go Down

Topic: Pressbutton to Capture Image Esp32 Cam (Read 864 times) previous topic - next topic

Ajioz_

Hello all,

I trust your kind response would be of great help to me.
I am having issues with doing image capture on real time with my esp32 cam module using a press button.
I want it that, if a button is pressed anytime, esp32 cam should capture an image. I created a function to respond to this press button.

Meanwhile, I modified the code from Randomnerd to achieve this purpose.

Find below my sketch..

The problems I am encountering are:

1) The system response to the press button only twice after which it's automatically goes to sleep even when I didn't ask it. To capture further image, I must restart the system. This isn't what I wanted.

2)It always fails to mount the SD card attached. I am using a 16G card of class A


Code: [Select]
/*********
  Rui Santos
  Complete project details at https://RandomNerdTutorials.com/esp32-cam-take-photo-save-microsd-card
 
  IMPORTANT!!!
   - Select Board "ESP32 Wrover Module"
   - Select the Partion Scheme "Huge APP (3MB No OTA)
   - GPIO 0 must be connected to GND to upload a sketch
   - After connecting GPIO 0 to GND, press the ESP32-CAM on-board RESET button to put your board in flashing mode
 
  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 "esp_camera.h"
#include "esp_timer.h"
#include "img_converters.h"
#include "Arduino.h"
#include "fb_gfx.h"
#include "fd_forward.h"
#include "fr_forward.h"
#include "FS.h"                // SD Card ESP32
#include "SD_MMC.h"            // SD Card ESP32
#include "soc/soc.h"           // Disable brownour problems
#include "soc/rtc_cntl_reg.h"  // Disable brownour problems
#include "dl_lib.h"
#include "driver/rtc_io.h"
#include <EEPROM.h>            // read and write from flash memory

// define the number of bytes you want to access
#define EEPROM_SIZE 1
#define pressButton 2           //Button to contyrol camera capture


// Pin definition for 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

int pictureNumber = 0;

String path;

void setup() {
  WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector
  pinMode(4, OUTPUT);
  pinMode(pressButton, INPUT);
  Serial.begin(115200);
  //Serial.setDebugOutput(true);
  //Serial.println();
 
  // initialize EEPROM with predefined size
  EEPROM.begin(EEPROM_SIZE);
  delay(2000);

 Serial.println("I am in Config seeting");
 
  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;

  Serial.println("I am out of Config seeting");
 
   if(psramFound()){
    config.frame_size = FRAMESIZE_UXGA; // FRAMESIZE_ + QVGA|CIF|VGA|SVGA|XGA|SXGA|UXGA
    config.jpeg_quality = 10;
    config.fb_count = 2;
  } else {
    config.frame_size = FRAMESIZE_SVGA;
    config.jpeg_quality = 12;
    config.fb_count = 1;
  }
  Serial.println("I am out of psram seeting");
 
  // Init Camera
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed with error 0x%x", err);
    return;
  }
 
  //Serial.println("Starting SD Card");
  if(!SD_MMC.begin()){
    Serial.println("SD Card Mount Failed");
    //return;
  }
 
  uint8_t cardType = SD_MMC.cardType();
  if(cardType == CARD_NONE){
    Serial.println("No SD Card attached");
    // return;
  }

  //camera_fb_t * fb = NULL;

  // initialize EEPROM with predefined size
  EEPROM.begin(EEPROM_SIZE);
  //pictureNumber = EEPROM.read(0);

  // Path where new picture will be saved in SD Card
  path = "/picture" + String(pictureNumber) +".jpg";

 
}

void loop() {
 
  while(digitalRead(pressButton)==HIGH){
    delay(100);
    if(digitalRead(pressButton)==HIGH){
      snapShot();
    }
  }
}


void snapShot(){
  camera_fb_t * fb = NULL; 
  fb = esp_camera_fb_get();     // Take Picture with Camera
 
  if(!fb) {
    Serial.println("Camera capture failed");
    return;
  }else{
    Serial.println("Camera capture successful");
    //pictureNumber = EEPROM.read(0);
    pictureNumber++;
  }
 
  // Path where new picture will be saved in SD Card
  path = "/picture" + String(pictureNumber) +".jpg";

  fs::FS &fs = SD_MMC;
  Serial.printf("Picture file name: %s\n", path.c_str());
 
  File file = fs.open(path.c_str(), FILE_WRITE);
  if(!file){
    Serial.println("Failed to open file in writing mode");
  }
  else {
    file.write(fb->buf, fb->len); // payload (image), payload length
    Serial.printf("Saved file to path: %s\n", path.c_str());
    EEPROM.write(0, pictureNumber);
    EEPROM.commit();
  }
  file.close();

  // Turns off the ESP32-CAM white on-board LED (flash) connected to GPIO 4
  pinMode(4, OUTPUT);
  rtc_gpio_hold_en(GPIO_NUM_4);
  delay(2000);
  Serial.println("I'm out of the snapshot method");
 
}



Any help please?

PaulS

Code: [Select]
  pinMode(pressButton, INPUT);
How IS the switch wired? INPUT_PULLUP makes for much simpler wiring.

Code: [Select]
Serial.println("I am in Config seeting");
All that code belongs in a separate function, called from setup().

If you fail to mount the SD card, why do you still attempt to write a file to it, in snapShot()?
The art of getting good answers lies in asking good questions.

Ajioz_

How IS the switch wired? INPUT_PULLUP makes for much simpler wiring.
Code: [Select]
  pinMode(pressButton, INPUT);


I am actually using an external pull down resistor to to wire up the button switch.

Code: [Select]
Serial.println("I am in Config seeting");
All that code belongs in a separate function, called from setup().

That print output is for debugging purpose

If you fail to mount the SD card, why do you still attempt to write a file to it, in snapShot()?
It's a normal settings parameters, the idea is I want to know the exact condition of the system. I refused breaking so that I can see more error

MikeOToole

Check this code out, might help... takes a picture when IR sensor detect someone and then sleeps...

In my case I use the RCWL-0516 (Microwave Radar Sensor) to detect anyone in the vicinity and as the output go hight on detection, I change the wake up to positive trigger in the code..

esp32 cam photo capture

Edit this line for wake-up on positive or negative going trigger, 0 = negative, 1 = positive
esp_sleep_enable_ext0_wakeup(GPIO_NUM_13, 1);

Even if this is not exactly what you want, check the code, it may prove useful...

Mike

Go Up