Merge pull request #8 from makermelissa/master

Fixed baud rate in driver, improved/added examples

Author: ladyada

adafruit_sharpmemorydisplay.py

@@ -72,7 +72,7 @@ class SharpMemoryDisplay(adafruit_framebuf.FrameBuffer):
     full display must be buffered in memory!"""
     # pylint: disable=too-many-instance-attributes,abstract-method
 
-    def __init__(self, spi, scs_pin, width, height, *, baudrate=16000000):
+    def __init__(self, spi, scs_pin, width, height, *, baudrate=8000000):
         self._scs_pin = scs_pin
         scs_pin.switch_to_output(value=True)
         self._baudrate = baudrate

examples/sharpmemorydisplay_pillow_demo.py

@@ -0,0 +1,59 @@
+"""
+This demo will fill the screen with white, draw a black box on top
+and then print Hello World! in the center of the display
+
+This example is for use on (Linux) computers that are using CPython with
+Adafruit Blinka to support CircuitPython libraries. CircuitPython does
+not support PIL/pillow (python imaging library)!
+"""
+
+import board
+import busio
+import digitalio
+from PIL import Image, ImageDraw, ImageFont
+import adafruit_sharpmemorydisplay
+
+# Colors
+BLACK = 0
+WHITE = 255
+
+# Parameters to Change
+BORDER = 5
+FONTSIZE = 10
+
+spi = busio.SPI(board.SCK, MOSI=board.MOSI)
+scs = digitalio.DigitalInOut(board.D6) # inverted chip select
+
+#display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 96, 96)
+display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 144, 168)
+
+# Clear display.
+display.fill(1)
+display.show()
+
+# Create blank image for drawing.
+# Make sure to create image with mode '1' for 1-bit color.
+image = Image.new('1', (display.width, display.height))
+
+# Get drawing object to draw on image.
+draw = ImageDraw.Draw(image)
+
+# Draw a black background
+draw.rectangle((0, 0, display.width, display.height), outline=BLACK, fill=BLACK)
+
+# Draw a smaller inner rectangle
+draw.rectangle((BORDER, BORDER, display.width - BORDER - 1, display.height - BORDER - 1),
+               outline=WHITE, fill=WHITE)
+
+# Load a TTF font.
+font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', FONTSIZE)
+
+# Draw Some Text
+text = "Hello World!"
+(font_width, font_height) = font.getsize(text)
+draw.text((display.width//2 - font_width//2, display.height//2 - font_height//2),
+          text, font=font, fill=BLACK)
+
+# Display image
+display.image(image)
+display.show()

examples/sharpmemorydisplay_simpletest.py

@@ -10,8 +10,8 @@
 scs = digitalio.DigitalInOut(board.D6) # inverted chip select
 
 # pass in the display size, width and height, as well
-display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 96, 96)
-# display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 144, 168)
+# display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 96, 96)
+display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 144, 168)
 
 print("Pixel test")
 
@@ -27,7 +27,7 @@
 # Set a pixel in the opposite corner position.
 display.pixel(display.width-1, display.height-1, 0)
 display.show()
-time.sleep(0.1)
+time.sleep(2)
 
 print("Lines test")
 # we'll draw from corner to corner, lets define all the pair coordinates here
@@ -40,7 +40,7 @@
         display.line(corner_from[0], corner_from[1],
                      corner_to[0], corner_to[1], 0)
 display.show()
-time.sleep(0.1)
+time.sleep(2)
 
 print("Rectangle test")
 display.fill(1)
@@ -49,7 +49,7 @@
 for i in range(11):
     display.rect(0, 0, int(w_delta*i), int(h_delta*i), 0)
 display.show()
-time.sleep(0.1)
+time.sleep(2)
 
 print("Text test")
 display.fill(1)