Add tricolor support for both 5.83" and 7.5"

adafruit_uc8179.py

@@ -39,7 +39,7 @@ __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_UC8179.git"
 _START_SEQUENCE = (
     b"\x01\x04\x07\x07\x3f\x3f"  # POWERSETTING: VGH=20V, VGL=-20V, VDH=15V, VDL=-15V
     b"\x04\x00"  # POWERON
-    b"\x00\x01\x13"  # PANELSETTING: 0x13
+    b"\x00\x01\x03"  # PANELSETTING
     b"\x61\x04\x00\x00\x00\x00"  # TRES: resolution
     b"\x15\x01\x00"  # DUALSPI: single SPI
     b"\x50\x02\x10\x07"  # WRITE_VCOM
@@ -68,9 +68,13 @@ class UC8179(EPaperDisplay):
         if "highlight_color" in kwargs:
             color_ram_command = 0x13
             black_ram_command = 0x10
+            panel_setting = 0x03
         else:
             color_ram_command = None
             black_ram_command = 0x13
+            panel_setting = 0x13
+
+        start_sequence[10] = panel_setting
 
         super().__init__(
             bus,

examples/uc8179_ThinkInk_583_Tricolor_AABMFGNR.py

@@ -0,0 +1,62 @@
+# SPDX-FileCopyrightText: 2025 Scott Shawcroft, written for Adafruit Industries
+# SPDX-FileCopyrightText: Copyright (c) 2021 Melissa LeBlanc-Williams for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
+"""Simple test script for 5.83" 648x480 tricolor display (ThinkInk_583_Tricolor_AABMFGNR)."""
+
+import time
+
+import board
+import busio
+import displayio
+from fourwire import FourWire
+
+import adafruit_uc8179
+
+displayio.release_displays()
+
+# This pinout works on a MagTag with the newer screen and may need to be altered for other boards.
+spi = busio.SPI(board.EPD_SCK, board.EPD_MOSI)  # Uses SCK and MOSI
+epd_cs = board.EPD_CS
+epd_dc = board.EPD_DC
+epd_reset = board.EPD_RESET
+epd_busy = board.EPD_BUSY
+
+display_bus = FourWire(spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000)
+time.sleep(1)
+
+display = adafruit_uc8179.UC8179(
+    display_bus,
+    width=648,
+    height=480,
+    busy_pin=epd_busy,
+    rotation=180,
+    black_bits_inverted=True,
+    highlight_color=0xff0000,
+    colstart=0
+)
+
+g = displayio.Group()
+
+pic = displayio.OnDiskBitmap("/display-ruler-1280x720.bmp")
+t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
+g.append(t)
+
+display.root_group = g
+
+display.refresh()
+
+print("refreshed")
+
+time.sleep(display.time_to_refresh + 5)
+# Always refresh a little longer. It's not a problem to refresh
+# a few seconds more, but it's terrible to refresh too early
+# (the display will throw an exception when if the refresh
+# is too soon)
+print("waited correct time")
+
+
+# Keep the display the same
+while True:
+    time.sleep(10)

examples/uc8179_ThinkInk_750_Tricolor_AABMFGNR.py

@@ -0,0 +1,62 @@
+# SPDX-FileCopyrightText: 2025 Scott Shawcroft, written for Adafruit Industries
+# SPDX-FileCopyrightText: Copyright (c) 2021 Melissa LeBlanc-Williams for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
+"""Simple test script for 7.5" 800x480 tricolor display (ThinkInk_750_Tricolor_AABMFGNR)."""
+
+import time
+
+import board
+import busio
+import displayio
+from fourwire import FourWire
+
+import adafruit_uc8179
+
+displayio.release_displays()
+
+# This pinout works on a MagTag with the newer screen and may need to be altered for other boards.
+spi = busio.SPI(board.EPD_SCK, board.EPD_MOSI)  # Uses SCK and MOSI
+epd_cs = board.EPD_CS
+epd_dc = board.EPD_DC
+epd_reset = board.EPD_RESET
+epd_busy = board.EPD_BUSY
+
+display_bus = FourWire(spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000)
+time.sleep(1)
+
+display = adafruit_uc8179.UC8179(
+    display_bus,
+    width=800,
+    height=480,
+    busy_pin=epd_busy,
+    rotation=180,
+    black_bits_inverted=True,
+    highlight_color=0xff0000,
+    colstart=0
+)
+
+g = displayio.Group()
+
+pic = displayio.OnDiskBitmap("/display-ruler-1280x720.bmp")
+t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
+g.append(t)
+
+display.root_group = g
+
+display.refresh()
+
+print("refreshed")
+
+time.sleep(display.time_to_refresh + 5)
+# Always refresh a little longer. It's not a problem to refresh
+# a few seconds more, but it's terrible to refresh too early
+# (the display will throw an exception when if the refresh
+# is too soon)
+print("waited correct time")
+
+
+# Keep the display the same
+while True:
+    time.sleep(10)

examples/uc8179_simpletest.py

@@ -3,7 +3,7 @@
 #
 # SPDX-License-Identifier: Unlicense
 
-"""Simple test script for 5.83" 648x480 monochrome display."""
+"""Simple test script for 5.83" 648x480 monochrome display (ThinkInk_583_Mono_AAAMFGN)."""
 
 import time