Remove OpenFontRender, embedded Meslo assets, custom-font APIs, and their runtime allocation overhead. Keep the taller status layout and compact card grid, with used RAM, aligned faded WiFi bars, and tighter telemetry rows.
Embed a Latin-1 Meslo LG S default and use OpenFontRender for anti-aliased text with an explicit pixel size on each draw and measurement call. Apps may replace the one retained face with an SD-backed TTF and restore Meslo with nil. Refresh UI sizing, status telemetry, Settings typography, tests, documentation, and font license notices.
TFT_eSPI drives the backlight pin only when TFT_BL and TFT_BACKLIGHT_ON are both
defined. Only the first was, so GPIO27 was never even configured as an output: the
panel initialised, took every pixel it was sent and stayed dark.
The emulator cannot catch this. It models the framebuffer, not the lamp, so a board
with no backlight and a board with a perfect one render identically.
Nothing in this firmware ever mounted internal flash storage: apps, lib, settings and
themes all live on the SD card. The Arduino default table still reserved 1408K for
spiffs, so a custom table hands that to the OTA slots instead, taking each from 1280K
to 1984K. The 64K tail the slots cannot use goes to coredump, which otherwise logs a
missing-partition error on every boot. Changing the table shifts app0, so the next
flash must be a full one.
The ESP32 has no battery-backed clock, so time is 1970 on every power-up. net.cpp
seeds it from the build timestamp -- the device cannot predate its own firmware, and
certificate validity checks need a plausible clock before SNTP can answer -- then
starts SNTP on each join and latches a synced flag from the notification callback.
sntp_get_sync_status() only reports COMPLETED briefly before resetting for the next
cycle, so polling it would make the clock flap.
sys.clockSynced() is the only new binding a clock UI needs; Lua's os.date() already
reads the same system clock. The launcher shows it, in UTC for now.
Boots to a launcher that lists /apps/<name>/main.lua on the SD card and runs
the selected app in a vendored Lua 5.4 with gui, input, fs, sys and log
bindings. Settings persist as a Lua table in /settings.lua, covering touch
calibration and screen rotation, with a settings app to edit both. Rotation is
applied after mapping raw touch into the panel's rotation-0 frame, so turning
the UI never invalidates a calibration.
evan