Add an example for the 2.13 inch eink bonnet

examples/ssd1680_2.13_mono_eink_bonnet.py

@@ -0,0 +1,72 @@
+# SPDX-FileCopyrightText: 2017 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 2.13" 250x122 tri-color display.
+Supported products:
+  * Adafruit 2.13" Tri-Color eInk Display Breakout
+    * https://www.adafruit.com/product/4947
+  * Adafruit 2.13" Tri-Color eInk Display FeatherWing
+    * https://www.adafruit.com/product/4814
+  * Adafruit 2.13" Mono eInk Display FeatherWing
+    * https://www.adafruit.com/product/4195
+
+
+"""
+
+import time
+import board
+import displayio
+import adafruit_ssd1680
+
+displayio.release_displays()
+
+# This pinout works on a Metro M4 and may need to be altered for other boards.
+spi = board.SPI()  # Uses SCK and MOSI
+epd_cs = board.CE0
+epd_dc = board.D22
+epd_reset = board.D27  # Set to None for FeatherWing
+epd_busy = board.D17  # Set to None for FeatherWing
+
+display_bus = displayio.FourWire(
+    spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
+)
+time.sleep(1)
+
+# For issues with display not updating top/bottom rows correctly set colstart to 8
+display = adafruit_ssd1680.SSD1680(
+    display_bus,
+    colstart=8,
+    width=250,
+    height=122,
+    busy_pin=epd_busy,
+    highlight_color=0xFF0000,
+    rotation=90,
+)
+
+
+g = displayio.Group()
+
+with open("display-ruler.bmp", "rb") as f:
+    pic = displayio.OnDiskBitmap(f)
+    t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
+    g.append(t)
+
+    display.show(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)