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Tactility/Documentation/ideas.md
Ken Van Hoeylandt 80b69b7f45
Update LVGL (master 9.2+) and related libraries (#130) 
- LVGL 9.2+ (master commit)
- esp_lvgl_port (master with my PR hotfix changes)
- espressif/esp_lcd_touch_gt911 1.1.1~2
2024-12-16 23:30:57 +01:00

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Bugs

  • I2C Scanner is on M5Stack devices is broken
  • Fix screenshot app on ESP32: it currently blocks when allocating memory (its cmakelists.txt also needs a fix, see TODO in there)
  • Commit fix to esp_lvgl_port to have esp_lvgl_port_disp.c user driver_data instead of user_data
  • WiFi bug: when pressing disconnect while between WIFI_EVENT_STA_START and IP_EVENT_STA_GOT_IP, then auto-connect becomes activate again.
  • elf_loader, lvgl and TactilityC in TactilitySDK should include their license files
  • ESP32 (CYD) runs out of memory when:
    • loading splash (even in Files app)
    • WiFi is on and navigating back to Desktop Suggested mitigation: When no PSRAM is availabl, use simplified desktop buttons

TODOs

  • Create different partitions files for different ESP flash size targets (N4, N8, N16, N32)
  • Rewrite sdcard HAL to class
  • Attach ELF data to wrapper app (as app data) (check that app state is "running"!) so you can run more than 1 external apps at a time. We'll need to keep track of all manifest instances, so that the wrapper can look up the relevant manifest for the relevant callbacks.
  • T-Deck: Clear screen before turning on blacklight
  • Single wire audio
  • Audio recording app
  • Files app: file operations: rename, delete, copy, paste (long press?), create folder
  • T-Deck: Use knob for UI selection
  • Logging to disk/etc.
  • Crash monitoring: Keep track of which system phase the app crashed in (e.g. which app in which state)
  • AppContext's onResult should pass the app id (or launch request id!) that was started, so we can differentiate between multiple types of apps being launched
  • Loader: Use main dispatcher instead of Thread, and move API to tt::app::
  • Create more unit tests for tactility-core and tactility (PC-only for now)
  • Show a warning screen if firmware encryption or secure boot are off when saving WiFi credentials.
  • Show a warning screen when a user plugs in the SD card on a device that only supports mounting at boot.
  • Localisation of texts (load in boot app from sd?)
  • Explore LVGL9's FreeRTOS functionality
  • Replace M5Unified and M5GFX with custom drivers (so we can fix the Core2 SD card mounting bug, and so we regain some firmware space)
  • External app loading: Check version of Tactility and check ESP target hardware, to check for compatibility.
  • Scanning SD card for external apps and auto-register them (in a temporary register?)
  • tt::app::start() and similar functions as proxies for Loader app start/stop/etc.
  • Support hot-plugging SD card

Nice-to-haves

  • T-Deck Plus: Create separate board config?
  • Support for displays with different DPI. Consider the layer-based system like on Android.
  • Make firmwares available via web serial website
  • If present, use LED to show boot status
  • T-Deck Power: capacity estimation uses linear voltage curve, but it should use some sort of battery discharge curve.

App Ideas

  • USB implementation to make device act as mass storage device.
  • System logger
  • BlueTooth keyboard app
  • Chip 8 emulator
  • BadUSB (in December 2024, TinyUSB has a bug where uninstalling and re-installing the driver fails)
  • Discord bot
  • IR transceiver app
  • GPS app
  • Investigate CSI https://stevenmhernandez.github.io/ESP32-CSI-Tool/
  • Compile unix tools to ELF apps?