When I use the Arduino example ESP32-Camera WebServer then I have to press the GETT STILL button to see a picture in the browser.
I want to use a timer that automatically takes a picture for example every (5) minute(s) and saves that picture to Hard Disk with a simple filename like cam.jpg.
The ESP32-cam module is connected with an USB cable, but I prefer to use its WIFI capability.
Is this possible?
Sure. Start with one of the ESP32-CAM streaming examples, and rewrite the html code so that the browser saves the image to a file on the PC.
Incremented naming convention I'm sure. 
Save a picture taken by an ESP32CAM to a folder on a PC ?
Easy enough, just transfer it over the serial interface.
Yes, I understand. I have not so much experience how to realize that transfer.
Can you help me a bit further on how to do that?
Thank you.
Oh, I.C., you want to do it over WiFi, no idea sorry.
ftp can send the file from the esp32 cam to a PC of some sort where the data can
be saved.
#include "sdkconfig.h" // used for log printing
#include "esp_system.h"
#include "freertos/FreeRTOS.h" //freeRTOS items to be used
#include "freertos/task.h"
#include "certs.h"
#include "esp_camera.h"
#include "soc/soc.h" // Disable brownout problems
#include "soc/rtc_cntl_reg.h" // Disable brownout problems
#include "driver/rtc_io.h"
#include <WiFi.h>
#include <WiFiClient.h>
#include "ESP32_FTPClient.h"
//
WiFiClient wifiClient; // do the WiFi instantiation thing
ESP32_FTPClient ftp (ftp_server, ftp_user, ftp_pass, 5000, 2);
////
void IRAM_ATTR WiFiEvent(WiFiEvent_t event)
{
switch (event) {
case SYSTEM_EVENT_STA_CONNECTED:
log_i("Connected to WiFi access point");
break;
case SYSTEM_EVENT_STA_DISCONNECTED:
log_i("Disconnected from WiFi access point");
break;
case SYSTEM_EVENT_AP_STADISCONNECTED:
log_i("WiFi client disconnected");
break;
default: break;
}
} // void IRAM_ATTR WiFiEvent(WiFiEvent_t event)
////
void setup()
{
WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector
////
if ( configInitCamera() )
{
xTaskCreatePinnedToCore( capturePhoto_sendFTP, "capturePhoto_sendFTP", 20000, NULL, 3, NULL, 1 );
} else {
log_i( "camera failed to initilize. Quitting programed operations." );
}
} // void setup()
////
void capturePhoto_sendFTP( void *pvParameters )
{
TickType_t xLastWakeTime = xTaskGetTickCount();
const TickType_t xFrequency = 100; //delay for mS
for (;;)
{
log_i( "tick");
if ( WiFi.status() == WL_CONNECTED )
{
camera_fb_t * fb = NULL; // pointer
fb = esp_camera_fb_get();
if (!fb)
{
log_i( "Camera capture failed" );
} else {
ftp.OpenConnection(); // try open FTP
if ( ftp.isConnected() )
{
//try send file ftp
ftp.ChangeWorkDir( ftp_path );
// Delete existing file, create the new file, and send the image to the file
ftp.DeleteFile( ftp_file_name );
ftp.InitFile( ftp_file_type ); //"Type I"
ftp.NewFile( ftp_file_name );
ftp.WriteData( (unsigned char *)fb->buf, fb->len );
ftp.CloseFile();
ftp.CloseConnection();
}
esp_camera_fb_return(fb); //return the frame buffer back to the driver for reuse
}
} else {
log_i( "In capturePhoto_sendFTP found WiFi not connected ");
connectToWiFi();
}
xLastWakeTime = xTaskGetTickCount();
vTaskDelayUntil( &xLastWakeTime, xFrequency );
}
vTaskDelete( NULL );
} //void capturePhoto_sendFTP( void *pvParameters )
////
void configureCameraSettings()
{
sensor_t * s = esp_camera_sensor_get(); //see certs.h for more info
s->set_brightness(s, -1); // -2 to 2 **************************
s->set_contrast(s, 0); // -2 to 2
s->set_saturation(s, 0); // -2 to 2
s->set_special_effect(s, 0); // 0 to 6 (0 - No Effect, 1 - Negative, 2 - Grayscale, 3 - Red Tint, 4 - Green Tint, 5 - Blue Tint, 6 - Sepia)
s->set_whitebal(s, 1); // 0 = disable , 1 = enable
s->set_awb_gain(s, 1); // 0 = disable , 1 = enable
s->set_wb_mode(s, 0); // 0 to 4 - if awb_gain enabled (0 - Auto, 1 - Sunny, 2 - Cloudy, 3 - Office, 4 - Home)
s->set_exposure_ctrl(s, 1); // 0 = disable , 1 = enable
s->set_aec2(s, 0); // 0 = disable , 1 = enable
s->set_ae_level(s, 0); // -2 to 2
s->set_aec_value(s, 300); // 0 to 1200
s->set_gain_ctrl(s, 1); // 0 = disable , 1 = enable
s->set_agc_gain(s, 0); // 0 to 30
s->set_gainceiling(s, (gainceiling_t)0); // 0 to 6
s->set_bpc(s, 0); // 0 = disable , 1 = enable
s->set_wpc(s, 1); // 0 = disable , 1 = enable
s->set_raw_gma(s, 1); // 0 = disable , 1 = enable
s->set_lenc(s, 1); // 0 = disable , 1 = enable
s->set_hmirror(s, 0); // 0 = disable , 1 = enable
s->set_vflip(s, 0); // 0 = disable , 1 = enable
s->set_dcw(s, 1); // 0 = disable , 1 = enable
s->set_colorbar(s, 0); // 0 = disable , 1 = enable
} //void configureCameraSettings()
////
bool configInitCamera()
{
camera_config_t config = {}; // Stores the camera configuration parameters
config.ledc_channel = LEDC_CHANNEL_0;
config.ledc_timer = LEDC_TIMER_0;
config.pin_d0 = GPIO_NUM_5; //Y2
config.pin_d1 = GPIO_NUM_18; //Y3
config.pin_d2 = GPIO_NUM_19; //Y4
config.pin_d3 = GPIO_NUM_21; //Y5
config.pin_d4 = GPIO_NUM_36; //Y6
config.pin_d5 = GPIO_NUM_39; //Y7
config.pin_d6 = GPIO_NUM_34; //Y8
config.pin_d7 = GPIO_NUM_35; // Y9
config.pin_xclk = GPIO_NUM_0; //XCLK
config.pin_pclk = GPIO_NUM_22; //PCLK
config.pin_vsync = GPIO_NUM_25; //VSSYNC
config.pin_href = GPIO_NUM_23; // HREF
config.pin_sscb_sda = GPIO_NUM_26; //SIOD
config.pin_sscb_scl = GPIO_NUM_27; //SIOC
config.pin_pwdn = GPIO_NUM_32; //PWDN
config.pin_reset = -1; //RESET
config.xclk_freq_hz = 20000000;
config.pixel_format = PIXFORMAT_JPEG; //assuming default is has PSRAM
config.frame_size = FRAMESIZE_UXGA; // FRAMESIZE_ + QVGA|CIF|VGA|SVGA|XGA|SXGA|UXGA
config.jpeg_quality = 10; //0-63 lower number means higher quality
config.fb_count = 2;
// Initialize the Camera
esp_err_t err = esp_camera_init(&config);
if (err != ESP_OK) {
log_i("Camera init failed with error 0x%x", err);
return false;
} else {
configureCameraSettings();
return true;
}
} //void configInitCamera()
////
void connectToWiFi()
{
int TryCount = 0;
while ( WiFi.status() != WL_CONNECTED )
{
TryCount++;
WiFi.disconnect();
WiFi.begin( SSID, PASSWORD );
vTaskDelay( 4000 );
if ( TryCount == 10 )
{
ESP.restart();
}
}
WiFi.onEvent( WiFiEvent );
}
////
void loop() {}
Thank you. During the compilation I see that I have to solve some failures, like a missing certs.h, an ESP32FTPclient.h.
I have to search for these libraries etc. before your example sketch can be executed.
I'll continue to work on it.
certs.h is where my passwords and other text info is contained.
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