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The ESP32 is too busy writing flash to respond to /ota/status poll requests, so _autoOtaProgress often stays at a low value (e.g. 25%) even when the download completes successfully. The previous >= 90% threshold guard then blocked waitForReboot(), leaving the UI frozen. Replace the progress threshold with an _otaInstallStarted flag set after the server confirms the OTA task has begun. Any 404/network error after install is confirmed now correctly triggers waitForReboot(), regardless of the last polled progress value.
platformio.ini (esp32c3 env): - Switch to partitions_4mb_c3.csv (1.875 MB OTA partitions) - build_unflags: strip LOAD_GFXFF and SMOOTH_FONT — GFX free fonts and smooth VLW font renderer are compiled in by default but never used - Explicit lib_deps without TFT_eWidget (dead code for C3) partitions_4mb_c3.csv (new): - app0/app1: 0x1E0000 (1.875 MB) each, up from 1.75 MB - SPIFFS: 0x30000 (192 KB), reduced from 448 KB — SPIFFS unused in BambuHelper - Result: 65 KB → 733 KB headroom - Note: partition table change requires USB re-flash; OTA updates thereafter src/main.cpp, src/display_ui.cpp: - USB CDC startup delay and Serial.flush() removal (previously unstaged)
Replace TFT_eSPI with LovyanGFX across the entire display stack. Board-specific configs (S3, CYD, C3) are C++ classes in display_ui.cpp. SPI pins and driver settings move from build_flags into the class configs, simplifying platformio.ini significantly. The C3 no longer needs the SPI patch script. Key changes: - Three LGFX board classes: LGFX_S3 (ST7789), LGFX_CYD (ILI9342), LGFX_C3 (ST7789) - fillArc replaces drawSmoothArc in gauge rendering; +90deg angle offset matches original gap-at-bottom orientation - alphaBlend565() helper replaces tft.alphaBlend() (not a member in LGFX) - drawArc (outline) replaces drawSmoothArc in animation code - S3 requires invertDisplay(true) at runtime for correct colors - Backlight handled via BACKLIGHT_PIN + analogWrite (unchanged) - config.h: BACKLIGHT_PIN guard added (was hardcoded to TFT_BL)
Replace LovyanGFX built-in bitmap fonts (1/2/4) with smooth anti-aliased VLW fonts generated from Inter Regular at 10/14/19pt. Font 7 (7-segment) is kept for clock displays. - Add Python script to generate VLW PROGMEM headers from TTF - Create font abstraction layer (fonts.h) with setFont() helper - Migrate all setTextFont() calls across 5 display files - All three targets build (~70% flash with LovyanGFX)
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Summary
fonts.habstraction layer withsetFont()helper — centralizes all font selectionscripts/generate_vlw_fonts.py) for reproducible font builds from TTF sourceDepends on #37 (LovyanGFX migration) — rebase onto main after that merges.
Flash usage (on top of LovyanGFX)
Test plan