• Johny Mattsson's avatar
    Switch to IDF-provided VFS and standard `io` module. · a2ba49e3
    Johny Mattsson authored
    The IDF-provided VFS resolves several issues:
    
     - The IDF components having a different view of the (virtual) file system
       compared to the Lua environment.
    
     - RTOS task/thread safety. Our legacy VFS was only ever safe to use
       from the LVM thread, which limited its usability. Upgrading it
       would have effectively required a reimplementation of the IDF VFS,
       which would have been a bigger task with larger on-going maintenance
       issues.
    
     - We're no longer needing to maintain our own SPIFFS component.
    
     - We're no longer needing to maintain our own FATFS component.
    
     - The legacy of the 8266's lack of standard C interface to the file system
       is no longer holding us back, meaning that we can use the standard
       Lua `io` module rather than the cobbled-together swiss army knife
       also known as the file module.
    
    Of course, the downside is that we'll either have to declare a backwards
    breakage in regard to the file module, or provide a Lua shim for the old
    functions, where applicable.
    
    Also included is some necessary integer type fixups in unrelated code,
    which apparently had depended on some non-standard types in either the
    SPIFFS or FATFS headers.
    
    A memory leak issue in the sdmmc module was also found and fixed while
    said module got switched over to the Espressif VFS.
    
    Module documentation has been updated to match the new reality (and I
    discovered in some places it wasn't even matching the old reality).
    a2ba49e3
CMakeLists.txt 164 Bytes