# Issues
- WiFi bug: when pressing disconnect while between `WIFI_EVENT_STA_START` and `IP_EVENT_STA_GOT_IP`, then auto-connect becomes active again.
- ESP32 (CYD) memory issues (or any device without PSRAM):
  - Boot app doesn't show logo 
  - WiFi is on and navigating back to Desktop makes desktop icons disappear
  - WiFi might fail quietly when trying to enable it: this shows no feedback (force it by increasing LVGL buffers to 100kB)
  Possible mitigations: 
  - When no PSRAM is available, use simplified desktop buttons
  - Add statusbar icon for memory pressure.
  - Show error in WiFi screen (e.g. AlertDialog when SPI is not enabled and available memory is below a certain amount)
- Clean up static_cast when casting to base class.
- M5Stack CoreS3 SD card mounts, but cannot be read. There is currently a notice about it [here](https://github.com/espressif/esp-bsp/blob/master/bsp/m5stack_core_s3/README.md).
- EventFlag: Fix return value of set/get/wait (the errors are weirdly mixed in)
- Consistently use either ESP_TARGET or ESP_PLATFORM
- tt_check() failure during app argument bundle nullptr check seems to trigger SIGSEGV
- Fix bug in T-Deck/etc: esp_lvgl_port settings has a large stack size (~9kB) to fix an issue where the T-Deck would get a stackoverflow. This sometimes happens when WiFi is auto-enabled and you open the app while it is still connecting.
- M5Stack Core only shows 4MB of SPIRAM in use

# TODOs
- Make a ledger for setting CPU affinity of various services and tasks
- Make "blocking" argument the last one, and put it default to false (or remove it entirely?): void startApp(const std::string& id, bool blocking, std::shared_ptr<const Bundle> parameters) {
- Boot hooks instead of a single boot method in config. Define different boot phases/levels in enum.
- Add toggle to Display app for sysmon overlay: https://docs.lvgl.io/master/API/others/sysmon/index.html
- CrashHandler: use "corrupted" flag
- CrashHandler: process other types of crashes (WDT?)
- Call tt::lvgl::isSyncSet after HAL init and show error (and crash?) when it is not set.
- Create different partitions files for different ESP flash size targets (N4, N8, N16, N32)
- 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
- Audio player app
- Audio recording app
- T-Deck: Use knob for UI selection
- 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
- 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
- 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
- OTA updates
- Web flasher
- 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/wifi status
- T-Deck Power: capacity estimation uses linear voltage curve, but it should use some sort of battery discharge curve.
- Statusbar widget to show how much memory is in use?
- Wrapper for Slider that shows "+" and "-" buttons, and also the value in a label.
- Display app: Add toggle to display performance measurement overlay (consider showing FPS in statusbar!)
- Files app: copy/paste actions
- On crash, try to save current log to flash or SD card? (this is risky, though, so ask in Discord first)
 
# 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?