Finish readme

README.rst

@@ -37,18 +37,8 @@ or individual libraries can be installed using
 `circup <https://github.com/adafruit/circup>`_.
 
 
-
-.. todo:: Describe the Adafruit product this library works with. For PCBs, you can also add the
-image from the assets folder in the PCB's GitHub repo.
-
-`Purchase one from the Adafruit shop <http://www.adafruit.com/products/4098>`_
-
 Installing from PyPI
 =====================
-.. note:: This library is not available on PyPI yet. Install documentation is included
-   as a standard element. Stay tuned for PyPI availability!
-
-.. todo:: Remove the above note if PyPI version is/will be available at time of release.
 
 On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally `from
 PyPI <https://pypi.org/project/adafruit-circuitpython-ek79686/>`_.
@@ -99,8 +89,67 @@ Or the following command to update an existing version:
 Usage Example
 =============
 
-.. todo:: Add a quick, simple example. It and other examples should live in the
-examples folder and be included in docs/examples.rst.
+.. code-block:: python
+
+    import time
+    import board
+    import displayio
+    import adafruit_ek79686
+
+    # Used to ensure the display is free in CircuitPython
+    displayio.release_displays()
+
+    # Define the pins needed for display use on the Metro
+    spi = board.SPI()
+    epd_cs = board.D10
+    epd_dc = board.D9
+    epd_reset = board.D5
+    epd_busy = board.D6
+
+    # Create the displayio connection to the display pins
+    display_bus = displayio.FourWire(
+        spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
+    )
+    time.sleep(1)  # Wait a bit
+
+    # Create the display object - the third color is red (0xff0000)
+    display = adafruit_ek79686.EK79686(
+        display_bus,
+        width=264,
+        height=176,
+        busy_pin=epd_busy,
+        highlight_color=0xFF0000,
+        rotation=90,
+    )
+
+    # Create a display group for our screen objects
+    g = displayio.Group()
+
+
+    # Display a ruler graphic from the root directory of the CIRCUITPY drive
+    with open("/display-ruler.bmp", "rb") as f:
+        pic = displayio.OnDiskBitmap(f)
+        # Create a Tilegrid with the bitmap and put in the displayio group
+        # CircuitPython 6 & 7 compatible
+        t = displayio.TileGrid(
+            pic, pixel_shader=getattr(pic, "pixel_shader", displayio.ColorConverter())
+        )
+        # CircuitPython 7 compatible only
+        # t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
+        g.append(t)
+
+        # Place the display group on the screen (does not refresh)
+        display.show(g)
+
+        # Show the image on the display
+        display.refresh()
+
+        print("refreshed")
+
+        # Do Not refresh the screen more often than every 180 seconds
+        #   for eInk displays! Rapid refreshes will damage the panel.
+        time.sleep(180)
+
 
 Documentation
 =============