tfaour
454c03586e
Vendored the panel's init/LUT/refresh register sequence from three
independent Waveshare reference drivers for this exact panel+controller
(RaspberryPi/c, ESP32, and the ESP32-S3-ePaper-13.3E6 ESP-IDF example),
which all agree byte-for-byte. The epd13in3e.c #error is gone; it
compiles clean and links (verified via /build-firmware ee02).
That vendor code also revealed the panel's SPI wire raster is a native
1200x1600 (portrait), not 1600x1200 as previously assumed -- rotated 90
degrees from the panel's landscape mount/marketing size. The old
assumption wasn't just a rotation bug: 1600x1200 and 1200x1600 don't
share a row stride, so packing at the wrong one would have shredded
images into a repeating diagonal garble on real hardware, not just
displayed them sideways. Fixed with a new PANEL_WIRE_TRANSPOSE in
image_pipeline.py, applied after the existing per-frame
ORIENTATION_TRANSPOSE, with a direction-agnostic regression test that
catches the stride bug specifically (a byte-count check alone can't,
since both orientations pack to the same total size).
A full ee02 build still fails, but no longer because of this driver --
main/{back,next,combo}_button.c call an ESP32-C6-only deep-sleep
GPIO-wakeup API with no ESP32-S3 fallback, a separate pre-existing gap
that was simply hidden behind the panel driver's old #error. See
docs/hardware.md for details; CI's continue-on-error on this board
stays in place until that's fixed too.