Add Inkplate 6COLOR (EP585C_600x448) ACeP 7-color panel

[brandon-dacrib]

Summary

Adds support for the Soldered Inkplate 6COLOR panel — a 5.85", 600×448, 7‑color ACeP display (black/white/red/green/blue/yellow/orange) driven by a UC8159 (UC81xx family) controller.

It's the same old‑generation ACeP technology as the existing EP73_800x480, so this follows that entry closely:

• EP585C_600x448 enum constant
• epd6color_init — full init sequence transcribed from Soldered's Inkplate‑Arduino‑library (Inkplate6COLORDriver.cpp), at 600×448
• u8Colors_6color — color table remapping the logical BBEP_* colors to the 6COLOR's native nibble codes (green=2, blue=3, red=4, yellow=5), which differ from EP73's order
• panelDefs row wiring it as BBEP_7COLOR / BBEP_CHIP_UC81xx
• examples/inkplate_6color_test — a labeled 7‑color‑bar test sketch

Testing

• Compiles for esp32:esp32:esp32 via the four_color and new example.
• Hardware‑verified on a real Inkplate 6COLOR: the test sketch renders all seven colors in the correct positions matching their labels, confirming epd6color_init and the u8Colors_6color remap. (Sequence: fillScreen/draw → writePlane() → refresh(); the 7‑color framebuffer is allocated in PSRAM.)

Related

• Consumed by the OpenDisplay firmware mapping in Add Inkplate 6COLOR panel mapping (mapEpd 0x0043 → EP585C_600x448) OpenDisplay/Firmware#41, which maps panel_ic_type 0x0043 → EP585C_600x448.

🤖 Generated with Claude Code

[brandon-dacrib]

Closing this because we are stopping the OpenDisplay path for Inkplate 6COLOR. The panel driver work was useful and hardware-verified, but OpenDisplay's client-push/direct-write model is a poor fit for this board: the ESP32 reset happens when firmware wakes/initializes the UC8159 during BLE DIRECT_WRITE_START. A robust OpenDisplay fix would require a larger direct-write buffering redesign, while Soldered's ESPHome component already matches the board better with a local framebuffer and local wake/write/refresh/sleep cycle: https://github.com/SolderedElectronics/Soldered-Inkplate-ESPHome. Also noting the overlapping Soldered-origin panel support in #30. Thanks, and sorry for the noise.