Hi, I want to take a picture and save it as .bmp image, I know its possible to make that using GitHub - espressif/esp32-camera
all you have to do is to take a picture and convert it to bmp file using this library.
The problem is I don't know how to convert the image, but I do have the code that captures an image in .jpg file.
#include "esp_camera.h"
#include "Arduino.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 "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
// 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;
void setup() {
WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector
Serial.begin(115200);
//Serial.setDebugOutput(true);
//Serial.println();
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;
config.frame_size = FRAMESIZE_QVGA; // FRAMESIZE_ + QVGA|CIF|VGA|SVGA|XGA|SXGA|UXGA
config.jpeg_quality = 10;
config.fb_count = 1;
// 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;
// Take Picture with Camera
fb = esp_camera_fb_get();
if(!fb) {
Serial.println("Camera capture failed");
return;
}
// initialize EEPROM with predefined size
EEPROM.begin(EEPROM_SIZE);
pictureNumber = EEPROM.read(0) + 1;
// Path where new picture will be saved in SD Card
String 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();
esp_camera_fb_return(fb);
// Turns off the ESP32-CAM white on-board LED (flash) connected to GPIO 4
pinMode(4, OUTPUT);
digitalWrite(4, LOW);
rtc_gpio_hold_en(GPIO_NUM_4);
delay(2000);
Serial.println("Going to sleep now");
delay(2000);
esp_deep_sleep_start();
Serial.println("This will never be printed");
}
void loop() {
}
can somebody help me with converting the image to .bmp? or is there a way to capture the image in .bmp?