Waveshare ships two hardware revisions under "ESP32-S3-Touch-AMOLED-1.8":
the original (SH8601 display + FT3168 touch @0x38) and a later one
(CO5300 display + CST816 touch @0x15). On the later board the SH8601
driver left the panel blank and the FT3168 probe spammed
ESP_ERR_INVALID_STATE because nothing answers at 0x38.
Detect the revision at boot by probing the touch address and pick the
matching drivers, so one binary drives both boards:
- board_rev.{h}/board_init.cpp: probe 0x15 (CST816) vs 0x38 (FT3168)
- display.cpp: instantiate Arduino_CO5300 or Arduino_SH8601 behind a
shared Arduino_OLED*; CO5300 gets a 16px column offset to center the
368-wide image (verified on hardware)
- touch.cpp: one FocalTech-style reader (regs 0x02..0x06) for both
chips, address chosen by revision
- board.h: add CST816_ADDR 0x15
- CLAUDE.md: document the dual revision
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
