1. 20 Oct, 2021 1 commit
    • 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
  2. 11 Aug, 2021 1 commit
    • Johny Mattsson's avatar
      Add ESP32C3 support/coexistence. · f123d462
      Johny Mattsson authored
      The uzlib and parts of Lua had to be switched over to use the
      C standard int types, as their custom typedefs conflicted with
      RISC-V toolchain provided typedefs.
      
      UART console driver updated to do less direct register meddling
      and use the IDF uart driver interface for setup. Still using our
      own ISR rather than the default driver ISR. Down the line we
      might want to investigate whether the IDF ISR would be a better
      fit.
      
      Lua C modules have been split into common and ESP32/ESP32-S
      specific ones. In the future there might also be ESP32-C3
      specific modules, which would go into components/modules-esp32c3
      at that point.
      
      Our old automatic fixup of flash size has been discarded as it
      interferes with the checksumming done by the ROM loader and
      results in unbootable systems. The IDF has already taken on
      this work via the ESPTOOL_FLASHSIZE_DETECT option, which handles
      this situation properly.
      f123d462
  3. 15 Jul, 2021 1 commit
  4. 02 Feb, 2017 1 commit