Merge pull request #5 from makermelissa/master

Added eInk Gizmo

Author: makermelissa

adafruit_gizmo/eink_gizmo.py

@@ -0,0 +1,63 @@
+# The MIT License (MIT)
+#
+# Copyright (c) 2019 Melissa LeBlanc-Williams for Adafruit Industries
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+"""
+`adafruit_gizmo.tft_gizmo`
+================================================================================
+
+Helper for the `Tri-Color E-Ink Gizmo <https://www.adafruit.com/product/4428>`_.
+
+
+* Author(s): Melissa LeBlanc-Williams
+"""
+
+__version__ = "0.0.0-auto.0"
+__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_Gizmo.git"
+
+from time import sleep
+import board
+import displayio
+from adafruit_il0373 import IL0373
+
+# pylint: disable=invalid-name, too-few-public-methods
+class EInk_Gizmo(IL0373):
+    """Class representing a EInk Gizmo."""
+
+    def __init__(self, *, spi=None, cs=None, dc=None, reset=None, busy=None):
+        displayio.release_displays()
+        if spi is None:
+            import busio
+            spi = busio.SPI(board.SCL, MOSI=board.SDA)
+        if cs is None:
+            cs = board.RX
+        if dc is None:
+            dc = board.TX
+        if reset is None:
+            reset = board.A3
+        self._display_bus = displayio.FourWire(spi,
+                                               command=dc,
+                                               chip_select=cs,
+                                               reset=reset,
+                                               baudrate=1000000)
+        sleep(1)
+        super().__init__(self._display_bus, width=152, height=152,
+                         busy_pin=busy, rotation=180,
+                         highlight_color=0xff0000)

examples/gizmo_eink_simpletest.py

@@ -0,0 +1,26 @@
+import time
+import displayio
+from adafruit_gizmo import eink_gizmo
+
+display = eink_gizmo.EInk_Gizmo()
+
+# Create a display group for our screen objects
+display_group = displayio.Group()
+
+# Display a ruler graphic from the root directory of the CIRCUITPY drive
+file = open("/display-ruler.bmp", "rb")
+
+picture = displayio.OnDiskBitmap(file)
+# Create a Tilegrid with the bitmap and put in the displayio group
+sprite = displayio.TileGrid(picture, pixel_shader=displayio.ColorConverter())
+display_group.append(sprite)
+
+# Place the display group on the screen
+display.show(display_group)
+
+# Refresh the display to have it actually show the image
+# NOTE: Do not refresh eInk displays sooner than 180 seconds
+display.refresh()
+print("refreshed")
+
+time.sleep(180)