Joao Ribeiro asked 2 years ago
Hi,
I am having a problem with my time lapse project. When the counter reaches 256 it starts over with 1 and the new image overwrites the old one. Is there a way to avoid it?
I tried
EEPROM_SIZE = 4
but it did not work. All the pictures are getting with the same time stamp. Do I have to add a reaal time clock?
Thanks in advance
Sara Santos Staff answered 2 years ago
Hi.
What project exactly are you following? Is it a project from the eBook or from the website? We have similar (but slightly different) projects in different places.
What is the code that you’re using?
Regards,
Sara
Joao Ribeiro answered 2 years ago
The code is a modification of your timelapse code. It does not use the4 byte assignment and when the camera reaches 256 it starts to overwrite alredy used archives.
// Time Lapse 5 min sem WiFi
// Camera OV5640 Escolhendo a placa AI Thinker ESP32
#include “esp_camera.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 “FS.h” // SD Card ESP32
#include “SD_MMC.h” // SD Card ESP32
#include <EEPROM.h> // read and write from flash memory
#include “esp_timer.h”
// define the number of bytes you want to access
#define EEPROM_SIZE 4
#define CAMERA_MODEL_AI_THINKER
#define PICTURE_DELAY 300 /* Delay for picture taking (in seconds) */
#define uS_TO_S_FACTOR 1000000 /* Conversion factor for micro seconds to seconds */
const int ledPin = 4; // Led no Pin 4
#if defined(CAMERA_MODEL_WROVER_KIT)
#define PWDN_GPIO_NUM -1
#define RESET_GPIO_NUM -1
#define XCLK_GPIO_NUM 21
#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 19
#define Y4_GPIO_NUM 18
#define Y3_GPIO_NUM 5
#define Y2_GPIO_NUM 4
#define VSYNC_GPIO_NUM 25
#define HREF_GPIO_NUM 23
#define PCLK_GPIO_NUM 22
#elif defined(CAMERA_MODEL_M5STACK_PSRAM)
#define PWDN_GPIO_NUM -1
#define RESET_GPIO_NUM 15
#define XCLK_GPIO_NUM 27
#define SIOD_GPIO_NUM 25
#define SIOC_GPIO_NUM 23
#define Y9_GPIO_NUM 19
#define Y8_GPIO_NUM 36
#define Y7_GPIO_NUM 18
#define Y6_GPIO_NUM 39
#define Y5_GPIO_NUM 5
#define Y4_GPIO_NUM 34
#define Y3_GPIO_NUM 35
#define Y2_GPIO_NUM 32
#define VSYNC_GPIO_NUM 22
#define HREF_GPIO_NUM 26
#define PCLK_GPIO_NUM 21
#elif defined(CAMERA_MODEL_M5STACK_WITHOUT_PSRAM)
#define PWDN_GPIO_NUM -1
#define RESET_GPIO_NUM 15
#define XCLK_GPIO_NUM 27
#define SIOD_GPIO_NUM 25
#define SIOC_GPIO_NUM 23
#define Y9_GPIO_NUM 19
#define Y8_GPIO_NUM 36
#define Y7_GPIO_NUM 18
#define Y6_GPIO_NUM 39
#define Y5_GPIO_NUM 5
#define Y4_GPIO_NUM 34
#define Y3_GPIO_NUM 35
#define Y2_GPIO_NUM 17
#define VSYNC_GPIO_NUM 22
#define HREF_GPIO_NUM 26
#define PCLK_GPIO_NUM 21
#elif defined(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
#else
#error “Camera model not selected”
#endif
int pictureNumber = 0;
void setup() {
WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector
Serial.begin(115200);
Serial.setDebugOutput(false);
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;
//**************************************************************************
// Turns off the ESP32-CAM white on-board LED (flash) connected to GPIO 4
pinMode(4, OUTPUT);
digitalWrite(4, LOW);
//************************************************************************
if(psramFound()){
config.frame_size = FRAMESIZE_QSXGA;
config.jpeg_quality = 10;
config.fb_count = 1;
Serial.printf(“QSXGA – QSXGA – ALTA – QSXGA \n”);
} else {
config.frame_size = FRAMESIZE_XGA;
config.jpeg_quality = 12;
config.fb_count = 1;
Serial.printf(“XGA – XGA – BAIXA – XGA \n”);
}
//*****************************************************************************
// 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;
}
// ******************************************************************************
// Inicializacao do cartao sd para liberar o LED do pino 4
SD_MMC.begin(“/sdcard”, true);
//**********************************************************************************
uint8_t cardType = SD_MMC.cardType();
if(cardType == CARD_NONE){
Serial.println(“No SD Card attached”);
return;
}
camera_fb_t * fb = NULL;
// Take Picture with Camera
fb = esp_camera_fb_get();
if(!fb) {
Serial.println(“Camera capture failed”);
return;
}
// initialize EEPROM with predefined size As in Line 20
EEPROM.begin(EEPROM_SIZE);
pictureNumber = EEPROM.read(0) + 1;
//*************************************************************************************************
// Path where new picture will be saved in SD Card
String path = “/C#-18–” + String(pictureNumber) +”.jpg”; //=========Nome do arquivo a ser salvo========
//************************************************************************************************
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); // Funcao passa como parameros (sddr, val). A var pictureNumber def linha 118
EEPROM.commit(); // Funcao commit da classe EEPROM retorna booleano e só true quando tiver dados
}
file.close();
esp_camera_fb_return(fb);
}
void loop() {
esp_sleep_enable_timer_wakeup(300 * uS_TO_S_FACTOR); // Numero de segundos que a camera dormira
delay(1000); // Milisegundos que a camera permanecera ativa
//**************************************************************************
// Turns off the ESP32-CAM white on-board LED (flash) connected to GPIO 4
digitalWrite(4, LOW);
//************************************************************************
esp_deep_sleep_start(); // Manda a camera dormir novamente
}
Sara Santos Staff answered 2 years ago
Hi.
Each “slot” of EEPROM can only save one-byte numbers. There are several workarounds to be able to store numbers bigger than 255. You can take a look at this : https://playground.arduino.cc/Code/EEPROMWriteAnything/
But, I would consider using another method to save the number permanently, like the Preferences.h library. We have a tutorial about that here: https://randomnerdtutorials.com/esp32-save-data-permanently-preferences/
I hope this helps.
Regards,
Sara