Problem with fs and drv and File pointer ESP32 bootloop

I don’t understand the question… probably a translation issue.

i don’t understant, why cf < CF_BUILT_IN_FIRST ?

lv_img_cf_t cf = ((lv_img_dsc_t *)src)->header.cf;
 if(cf < CF_BUILT_IN_FIRST || cf > CF_BUILT_IN_LAST) return LV_RES_INV;

the format LV_IMG_CF_TRUE_COLOR can’t be use in .bin file ?

and when i open a convert file the 4 first byte is

typedef struct
{

    /* The first 8 bit is very important to distinguish the different source types.
     * For more info see `lv_img_get_src_type()` in lv_img.c */
    uint32_t cf : 5;          /* Color format: See `lv_img_color_format_t`*/
    uint32_t always_zero : 3; /*It the upper bits of the first byte. Always zero to look like a
                                 non-printable character*/

    uint32_t reserved : 2; /*Reserved to be used later*/

    uint32_t w : 11; /*Width of the image map*/
    uint32_t h : 11; /*Height of the image map*/
} lv_img_header_t;

04 00 05 1e // in HEXA and mean : 

0000 0 // cf 
100 // always_zero
00 // reserved
00000000000 // w
10100011110 // h

That why i ask in which way i must read the header ?

The color formats are represented as numbers. That if statement just checks whether it’s a valid color format or not.

It looks like you must be reading the image header wrong. The always_zero bits are not all zero and the image is zero pixels wide. :confused:

ok the library lv_fs_fatfs.c work great
not for the dir drv but it work !!! finally :smile:

the SD.H and FS.h use by ESP32 on arduino DON’T WORK ! i think is because the read function need a Uint8_t buffer.

size_t read(uint8_t* buf, size_t size);

so don’t weast your time like a do and use the fatfs if you want use image one just : remove the dir function and pretype void* file_p and all work.

don’t forget to initialise your SD card with :

  /* Initialisation de la carte SD */
  Serial.print(F("Init SD card... "));
  if (!SD.begin(SD_CS)) {
    Serial.println(F("FAIL"));
    for (;;); //  appui sur bouton RESET
  }

before init the drive

thanx for you’re time.

**
 * Open a file
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable
 * @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_open (lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode)
{
    uint8_t flags = 0;

    if(mode == LV_FS_MODE_WR) flags = FA_WRITE | FA_OPEN_ALWAYS;
    else if(mode == LV_FS_MODE_RD) flags = FA_READ;
    else if(mode == (LV_FS_MODE_WR | LV_FS_MODE_RD)) flags = FA_READ | FA_WRITE | FA_OPEN_ALWAYS;

    FRESULT res = f_open((FIL*) file_p, path, flags);

    if(res == FR_OK) {
      f_lseek((FIL*) file_p, 0);
      return LV_FS_RES_OK;
    } else {
      return LV_FS_RES_UNKNOWN;
    }
}


/**
 * Close an opened file
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable. (opened with lv_ufs_open)
 * @return LV_FS_RES_OK: no error, the file is read
 *         any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
{
    f_close((FIL*) file_p);
    return LV_FS_RES_OK;
}

/**
 * Read data from an opened file
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable.
 * @param buf pointer to a memory block where to store the read data
 * @param btr number of Bytes To Read
 * @param br the real number of read bytes (Byte Read)
 * @return LV_FS_RES_OK: no error, the file is read
 *         any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
{
    FRESULT res = f_read((FIL*) file_p, buf, btr, (UINT*)br);
    if(res == FR_OK) return LV_FS_RES_OK;
    else return LV_FS_RES_UNKNOWN;
}

/**
 * Write into a file
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable
 * @param buf pointer to a buffer with the bytes to write
 * @param btr Bytes To Write
 * @param br the number of real written bytes (Bytes Written). NULL if unused.
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw)
{
  FRESULT res = f_write((FIL*) file_p, buf, btw, (UINT*)bw);
    if(res == FR_OK) return LV_FS_RES_OK;
    else return LV_FS_RES_UNKNOWN;
}

/**
 * Set the read write pointer. Also expand the file size if necessary.
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable. (opened with lv_ufs_open )
 * @param pos the new position of read write pointer
 * @return LV_FS_RES_OK: no error, the file is read
 *         any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos)
{
    f_lseek((FIL*) file_p, pos);
    return LV_FS_RES_OK;
}

/**
 * Give the size of a file bytes
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable
 * @param size pointer to a variable to store the size
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_size (lv_fs_drv_t * drv, void * file_p, uint32_t * size_p)
{
  (*size_p) = f_size(((file_t *)file_p));
    return LV_FS_RES_OK;
}

/**
 * Give the position of the read write pointer
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable.
 * @param pos_p pointer to to store the result
 * @return LV_FS_RES_OK: no error, the file is read
 *         any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
{
  *pos_p = f_tell(((file_t *)file_p));
    return LV_FS_RES_OK;
}

/**
 * Delete a file
 * @param drv pointer to a driver where this function belongs
 * @param path path of the file to delete
 * @return  LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_remove (lv_fs_drv_t * drv, const char *path)
{
    lv_fs_res_t res = LV_FS_RES_NOT_IMP;

    /* Add your code here*/

    return res;
}

/**
 * Truncate the file size to the current position of the read write pointer
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to an 'ufs_file_t' variable. (opened with lv_fs_open )
 * @return LV_FS_RES_OK: no error, the file is read
 *         any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_trunc (lv_fs_drv_t * drv, void * file_p)
{
    f_sync((FIL*) file_p);           /*If not syncronized fclose can write the truncated part*/
    f_truncate((FIL*) file_p);
    return LV_FS_RES_OK;
}

/**
 * Rename a file
 * @param drv pointer to a driver where this function belongs
 * @param oldname path to the file
 * @param newname path with the new name
 * @return LV_FS_RES_OK or any error from 'fs_res_t'
 */
static lv_fs_res_t fs_rename (lv_fs_drv_t * drv, const char * oldname, const char * newname)
{
 
    FRESULT res = f_rename(oldname, newname);

    if(res == FR_OK) return LV_FS_RES_OK;
    else return LV_FS_RES_UNKNOWN;
}

/**
 * Get the free and total size of a driver in kB
 * @param drv pointer to a driver where this function belongs
 * @param letter the driver letter
 * @param total_p pointer to store the total size [kB]
 * @param free_p pointer to store the free size [kB]
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_free (lv_fs_drv_t * drv, uint32_t * total_p, uint32_t * free_p)
{
    lv_fs_res_t res = LV_FS_RES_NOT_IMP;

    /* Add your code here*/

    return res;
}

and now we dir include

This version work for esp32 if you want!

/**
 * @file lv_fs_fatfs.c
 * For ESP32
 */

/*********************
 *      INCLUDES
 *********************/

#include <lvgl.h>

#include "ff.h"
#include <SD.h>


/*********************
 *      DEFINES
 *********************/
#define SD_CS          4 // you're CS pin for SPI slave
#define DRIVE_LETTER 'S'
/**********************
 *      TYPEDEFS
 **********************/

/* Create a type to store the required data about your file.*/
typedef  FIL file_t;

/*Similarly to `file_t` create a type for directory reading too */
typedef  FF_DIR dir_t;

/**********************
 *  STATIC PROTOTYPES
 **********************/
static void fs_init(void);

static lv_fs_res_t fs_open (lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos);
static lv_fs_res_t fs_size (lv_fs_drv_t * drv, void * file_p, uint32_t * size_p);
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static lv_fs_res_t fs_remove (lv_fs_drv_t * drv, const char *path);
static lv_fs_res_t fs_trunc (lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_rename (lv_fs_drv_t * drv, const char * oldname, const char * newname);
static lv_fs_res_t fs_free (lv_fs_drv_t * drv, uint32_t * total_p, uint32_t * free_p);
static lv_fs_res_t fs_dir_open (lv_fs_drv_t * drv, void * dir_p, const char *path);
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn);
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p);

/**********************
 *  STATIC VARIABLES
 **********************/

/**********************
 *      MACROS
 **********************/

/**********************
 *   GLOBAL FUNCTIONS
 **********************/

void lv_fs_if_init(void)
{
    /*----------------------------------------------------
     * Initialize your storage device and File System
     * -------------------------------------------------*/
    fs_init();

    /*---------------------------------------------------
     * Register the file system interface  in LittlevGL
     *--------------------------------------------------*/

    /* Add a simple drive to open images */
    lv_fs_drv_t fs_drv;                         /*A driver descriptor*/
  lv_fs_drv_init(&fs_drv);

    /*Set up fields...*/
    fs_drv.file_size = sizeof(file_t);
    fs_drv.letter = DRIVE_LETTER;
    fs_drv.open_cb = fs_open;
    fs_drv.close_cb = fs_close;
    fs_drv.read_cb = fs_read;
    fs_drv.write_cb = fs_write;
    fs_drv.seek_cb = fs_seek;
    fs_drv.tell_cb = fs_tell;
    fs_drv.free_space_cb = fs_free;
    fs_drv.size_cb = fs_size;
    fs_drv.remove_cb = fs_remove;
    fs_drv.rename_cb = fs_rename;
    fs_drv.trunc_cb = fs_trunc;
    
    fs_drv.rddir_size = sizeof(dir_t);
    fs_drv.dir_close_cb = fs_dir_close;
    fs_drv.dir_open_cb = fs_dir_open;
    fs_drv.dir_read_cb = fs_dir_read;

    lv_fs_drv_register(&fs_drv);
}

/**********************
 *   STATIC FUNCTIONS
 **********************/

/* Initialize your Storage device and File system. */
static void fs_init(void)
{
  /* Initialisation de la carte SD */
  Serial.print(F("Init SD card... "));
  if (!SD.begin(SD_CS)) {
    Serial.println(F("FAIL"));
    for (;;); //  appui sur bouton RESET
  }
}

/**
 * Open a file
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable
 * @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
 * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_open (lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode)
{
    uint8_t flags = 0;

    if(mode == LV_FS_MODE_WR) flags = FA_WRITE | FA_OPEN_ALWAYS;
    else if(mode == LV_FS_MODE_RD) flags = FA_READ;
    else if(mode == (LV_FS_MODE_WR | LV_FS_MODE_RD)) flags = FA_READ | FA_WRITE | FA_OPEN_ALWAYS;

    FRESULT res = f_open((file_t*) file_p, path, flags);

    if(res == FR_OK) {
      f_lseek((file_t*) file_p, 0);
      return LV_FS_RES_OK;
    } else {
      return LV_FS_RES_UNKNOWN;
    }
}


/**
 * Close an opened file
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable. (opened with lv_ufs_open)
 * @return LV_FS_RES_OK: no error, the file is read
 *         any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
{
    f_close((file_t*) file_p);
    return LV_FS_RES_OK;
}

/**
 * Read data from an opened file
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable.
 * @param buf pointer to a memory block where to store the read data
 * @param btr number of Bytes To Read
 * @param br the real number of read bytes (Byte Read)
 * @return LV_FS_RES_OK: no error, the file is read
 *         any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
{
    FRESULT res = f_read((file_t*) file_p, buf, btr, (UINT*)br);
    if(res == FR_OK) return LV_FS_RES_OK;
    else return LV_FS_RES_UNKNOWN;
}

/**
 * Write into a file
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable
 * @param buf pointer to a buffer with the bytes to write
 * @param btr Bytes To Write
 * @param br the number of real written bytes (Bytes Written). NULL if unused.
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw)
{
  FRESULT res = f_write((file_t*) file_p, buf, btw, (UINT*)bw);
    if(res == FR_OK) return LV_FS_RES_OK;
    else return LV_FS_RES_UNKNOWN;
}

/**
 * Set the read write pointer. Also expand the file size if necessary.
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable. (opened with lv_ufs_open )
 * @param pos the new position of read write pointer
 * @return LV_FS_RES_OK: no error, the file is read
 *         any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos)
{
    f_lseek((file_t*) file_p, pos);
    return LV_FS_RES_OK;
}

/**
 * Give the size of a file bytes
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable
 * @param size pointer to a variable to store the size
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_size (lv_fs_drv_t * drv, void * file_p, uint32_t * size_p)
{
  (*size_p) = f_size(((file_t *)file_p));
    return LV_FS_RES_OK;
}

/**
 * Give the position of the read write pointer
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to a file_t variable.
 * @param pos_p pointer to to store the result
 * @return LV_FS_RES_OK: no error, the file is read
 *         any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
{
  *pos_p = f_tell(((file_t *)file_p));
    return LV_FS_RES_OK;
}

/**
 * Delete a file
 * @param drv pointer to a driver where this function belongs
 * @param path path of the file to delete
 * @return  LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_remove (lv_fs_drv_t * drv, const char *path)
{
    lv_fs_res_t res = LV_FS_RES_NOT_IMP;

    /* Add your code here*/

    return res;
}

/**
 * Truncate the file size to the current position of the read write pointer
 * @param drv pointer to a driver where this function belongs
 * @param file_p pointer to an 'ufs_file_t' variable. (opened with lv_fs_open )
 * @return LV_FS_RES_OK: no error, the file is read
 *         any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_trunc (lv_fs_drv_t * drv, void * file_p)
{
    f_sync((file_t*) file_p);           /*If not syncronized fclose can write the truncated part*/
    f_truncate((file_t*) file_p);
    return LV_FS_RES_OK;
}

/**
 * Rename a file
 * @param drv pointer to a driver where this function belongs
 * @param oldname path to the file
 * @param newname path with the new name
 * @return LV_FS_RES_OK or any error from 'fs_res_t'
 */
static lv_fs_res_t fs_rename (lv_fs_drv_t * drv, const char * oldname, const char * newname)
{
 
    FRESULT res = f_rename(oldname, newname);

    if(res == FR_OK) return LV_FS_RES_OK;
    else return LV_FS_RES_UNKNOWN;
}

/**
 * Get the free and total size of a driver in kB
 * @param drv pointer to a driver where this function belongs
 * @param letter the driver letter
 * @param total_p pointer to store the total size [kB]
 * @param free_p pointer to store the free size [kB]
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_free (lv_fs_drv_t * drv, uint32_t * total_p, uint32_t * free_p)
{
    lv_fs_res_t res = LV_FS_RES_NOT_IMP;

    /* Add your code here*/

    return res;
}

/**
 * Initialize a 'fs_read_dir_t' variable for directory reading
 * @param drv pointer to a driver where this function belongs
 * @param dir_p pointer to a 'fs_read_dir_t' variable
 * @param path path to a directory
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_dir_open (lv_fs_drv_t * drv, void * dir_p, const char *path)
{
    FRESULT res = f_opendir((dir_t*)dir_p, path);
    if(res == FR_OK) return LV_FS_RES_OK;
    else return LV_FS_RES_UNKNOWN;
}

/**
 * Read the next filename form a directory.
 * The name of the directories will begin with '/'
 * @param drv pointer to a driver where this function belongs
 * @param dir_p pointer to an initialized 'fs_read_dir_t' variable
 * @param fn pointer to a buffer to store the filename
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn)
{
  FRESULT res;
  FILINFO fno;
  fn[0] = '\0';

    do {
      res = f_readdir((dir_t*)dir_p, &fno);
      if(res != FR_OK) return LV_FS_RES_UNKNOWN;

    if(fno.fattrib & AM_DIR) {
      fn[0] = '/';
      strcpy(&fn[1], fno.fname);
    }
    else strcpy(fn, fno.fname);

    } while(strcmp(fn, "/.") == 0 || strcmp(fn, "/..") == 0);

    return LV_FS_RES_OK;
}

/**
 * Close the directory reading
 * @param drv pointer to a driver where this function belongs
 * @param dir_p pointer to an initialized 'fs_read_dir_t' variable
 * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
 */
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p)
{
  f_closedir((dir_t*)dir_p);
    return LV_FS_RES_OK;
}

Glad to see that it works!

To use JPG images directly you should use RAW color format. TRUE_COLOR will decode the image and create a simple array of pixels.

thx!

this is a video of what i done

i make a fie explorer.

so now, I’can open an image !! I need to add a empty screen between a image and the explorer file to avoid a core panic. (the creation of my dir is a bit slow. is a bit slow but it 's not a probleme).


  lv_group_remove_all_objs(Cross);
  lv_obj_clean(scr1);
  /*Create a list*/
  lv_obj_t * list1 = lv_list_create(scr1, NULL);
  lv_obj_set_size(list1, 320, 240);
  lv_obj_align(list1, NULL, LV_ALIGN_CENTER, 0, 0);
  lv_list_set_scroll_propagation(list1, true);
  /*Add buttons to the list*/
  lv_obj_t * list_btn;
  if (fd.actualpath == "S:/") {
    list_btn = lv_list_add_btn(list1, LV_SYMBOL_HOME, "Menu");
    lv_obj_set_event_cb(list_btn, Back_Menu_Start_event_cb);
  }
  else
  {
    list_btn = lv_list_add_btn(list1, LV_SYMBOL_DIRECTORY, "../");
    lv_obj_set_event_cb(list_btn, dir_event_cb);
  }

  for (int m = 0; m < fd.fnum; m++) {
    if (fd.lfile[m][0] == '/') {
      list_btn = lv_list_add_btn(list1, LV_SYMBOL_DIRECTORY, (char *) fd.lfile[m].c_str());
      lv_obj_set_event_cb(list_btn, dir_event_cb);
    }
    else if (type_file((char *) fd.lfile[m].c_str()) == 'I') {
      list_btn = lv_list_add_btn(list1, LV_SYMBOL_IMAGE, (char *) fd.lfile[m].c_str());
      lv_obj_set_event_cb(list_btn, dir_event_cb);
    }
    else if (type_file((char *) fd.lfile[m].c_str()) == 'T') {
      list_btn = lv_list_add_btn(list1, LV_SYMBOL_DRIVE, (char *)fd.lfile[m].c_str());
      lv_obj_set_event_cb(list_btn, dir_event_cb);
    }
    else if (type_file((char *) fd.lfile[m].c_str()) == 'U') {
      list_btn = lv_list_add_btn(list1, LV_SYMBOL_FILE, (char *) fd.lfile[m].c_str());
      lv_obj_set_event_cb(list_btn, dir_event_cb);
    }
  }
  lv_group_add_obj(Cross, list1);

I a have the same issue when i try to read a txt file but i think i can find why. (end of the video).

the link

Have a good day.

I don’t know what the text means when you open a text file :slight_smile: Form the video it seems you opened a text file and a text appeared.

Are the images opened as JPG?