Support long filenames in the FATFS generator (IDFGH-6520)

[MaazSk]

Is your feature request related to a problem? Please describe.

I am using FATFS in my code and I want to load some of the files from the computer to it. So, if we have a tool as we have for spiffs like spiffsgen or mkspiffs which are used to generate .img would be great as I am unable to create a fatfs image.

Describe the solution you'd like

As I have used mkspiffs to create a .bin file so a tool like mkspiffs or spiffsgen would be of great help

Describe alternatives you've considered

I have considered these 2 alternatives as follows

• ESP32-mkfatfs
• Mk-esp32fat

But I am unable to build both the files because they are not supported for ESP-IDF v4.3

I know there is a utility in the master branch in example/storage/fatfsgen but I am not sure whether it will support my version of esp-idf or not

[dobairoland]

I'm sorry @MaazSk but we are not adding new features to already released versions. The FATFS generating tool is available starting from v5.0.

The tool relies on some CMake-level project integration but it not using anything else from ESP-IDF. You can easily generate your image using the master branch and include it into your v4.3.x-based project.

[MaazSk]

@dobairoland Thank you for the reply!

As you said I was trying to generate the img file but I got the following error

maaz@maaz:~/esp/esp_master_version/esp-idf/components/fatfs$ python3 wl_fatfsgen.py /home/maaz/Downloads/Telegram_Desktop/TS-Dolphin-SMC3P-0000001/Required_Cerificates Traceback (most recent call last): File "/home/maaz/esp/esp_master_version/esp-idf/components/fatfs/wl_fatfsgen.py", line 196, in wl_fatfs.wl_generate(input_dir) File "/home/maaz/esp/esp_master_version/esp-idf/components/fatfs/wl_fatfsgen.py", line 175, in wl_generate self.plain_fatfs.generate(input_directory=input_directory) File "/home/maaz/esp/esp_master_version/esp-idf/components/fatfs/fatfsgen.py", line 190, in generate self._generate_partition_from_folder(folder_name, folder_path=path_to_folder, is_dir=True) File "/home/maaz/esp/esp_master_version/esp-idf/components/fatfs/fatfsgen.py", line 183, in _generate_partition_from_folder self._generate_partition_from_folder(os.path.join(smaller_path, path), folder_path=folder_path) File "/home/maaz/esp/esp_master_version/esp-idf/components/fatfs/fatfsgen.py", line 174, in _generate_partition_from_folder self.create_file(name=file_name, extension=extension, path_from_root=split_path[1:-1] or None) File "/home/maaz/esp/esp_master_version/esp-idf/components/fatfs/fatfsgen.py", line 101, in create_file self.root_directory.new_file(name=name, extension=extension, path_from_root=path_from_root) File "/home/maaz/esp/esp_master_version/esp-idf/components/fatfs/fatfsgen_utils/fs_object.py", line 190, in new_file free_cluster, free_entry, target_dir = self.allocate_object(name=name, File "/home/maaz/esp/esp_master_version/esp-idf/components/fatfs/fatfsgen_utils/fs_object.py", line 183, in allocate_object free_entry.allocate_entry(first_cluster_id=free_cluster.id, File "/home/maaz/esp/esp_master_version/esp-idf/components/fatfs/fatfsgen_utils/entry.py", line 111, in allocate_entry raise TooLongNameException( fatfsgen_utils.exceptions.TooLongNameException: Maximal length of the object name is 8 characters and 3 characters for extension!

[dobairoland]

The tool is under development and the initial version was published only recently. The support for long file names and FAT16 is coming in the next months.

[MaazSk]

@dobairoland, Thank you for the update.

Can you please let us know whenever you release the newer version.

Thanks in advance.

[dobairoland]

Alright, lets keep this open. It will be closed by the commit adding support for long filenames.

[MaazSk]

Okay, Thank you!