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Fix SD card integration and Lua game loading

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- Fix SD card MISO pin (was using display MISO instead of SD MISO)
- Add FatFS mounting after SD card initialization
- Restore SPI baudrate on all SD init failure paths
- Add case-insensitive .lua file extension check
- Filter out hidden 8.3 filename entries
- Add SPI speed management functions for shared SPI bus
- Wrap all FatFS operations with SPI speed switching
- Restore display SPI speed (32 MHz) after SD operations
- Add debug output to Lua game loader

This fixes slow display refresh when SD card is present and enables
reliable Lua game loading from SD card /games directory.
This commit is contained in:
Adolfo Reyna
2026-02-07 19:31:38 -05:00
parent 2a472fc29f
commit b16211f148
109 changed files with 38964 additions and 20 deletions
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