Merge pull request #32 from makermelissa/master

Added Pillow Image drawing example

examples/epd_pillow_image.py

@@ -0,0 +1,65 @@
+"""
+Image resizing and drawing using the Pillow Library. For the image, check out the
+associated Adafruit Learn guide at:
+https://learn.adafruit.com/adafruit-eink-display-breakouts/python-code
+
+Written by Melissa LeBlanc-Williams for Adafruit Industries
+"""
+
+import digitalio
+import busio
+import board
+from PIL import Image
+from adafruit_epd.il0373 import Adafruit_IL0373
+from adafruit_epd.il91874 import Adafruit_IL91874    # pylint: disable=unused-import
+from adafruit_epd.il0398 import Adafruit_IL0398      # pylint: disable=unused-import
+from adafruit_epd.ssd1608 import Adafruit_SSD1608    # pylint: disable=unused-import
+from adafruit_epd.ssd1675 import Adafruit_SSD1675  # pylint: disable=unused-import
+
+
+# create the spi device and pins we will need
+spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+ecs = digitalio.DigitalInOut(board.CE0)
+dc = digitalio.DigitalInOut(board.D22)
+srcs = None
+rst = digitalio.DigitalInOut(board.D27)
+busy = digitalio.DigitalInOut(board.D17)
+
+# give them all to our driver
+#display = Adafruit_SSD1608(200, 200, spi,        # 1.54" HD mono display
+#display = Adafruit_SSD1675(122, 250, spi,        # 2.13" HD mono display
+#display = Adafruit_IL91874(176, 264, spi,        # 2.7" Tri-color display
+#display = Adafruit_IL0373(152, 152, spi,         # 1.54" Tri-color display
+#display = Adafruit_IL0373(128, 296, spi,         # 2.9" Tri-color display
+#display = Adafruit_IL0398(400, 300, spi,         # 4.2" Tri-color display
+display = Adafruit_IL0373(104, 212, spi,          # 2.13" Tri-color display
+                          cs_pin=ecs, dc_pin=dc, sramcs_pin=srcs,
+                          rst_pin=rst, busy_pin=busy)
+
+# IF YOU HAVE A FLEXIBLE DISPLAY (2.13" or 2.9") uncomment these lines!
+#display.set_black_buffer(1, False)
+#display.set_color_buffer(1, False)
+
+display.rotation = 1
+
+image = Image.open("blinka.png")
+
+# Scale the image to the smaller screen dimension
+image_ratio = image.width / image.height
+screen_ratio = display.width / display.height
+if screen_ratio < image_ratio:
+    scaled_width = image.width * display.height // image.height
+    scaled_height = display.height
+else:
+    scaled_width = display.width
+    scaled_height = image.height * display.width // image.width
+image = image.resize((scaled_width, scaled_height), Image.BICUBIC)
+
+# Crop and center the image
+x = scaled_width // 2 - display.width // 2
+y = scaled_height // 2 - display.height // 2
+image = image.crop((x, y, x + display.width, y + display.height))
+
+# Display image.
+display.image(image)
+display.display()