Added Pillow ILI9341 Examples

examples/rgb_display_pillow_ili9341_demo.py

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+import digitalio
+import board
+from PIL import Image, ImageDraw, ImageFont
+import adafruit_rgb_display.ili9341 as ili9341
+
+# First define some constants to allow easy resizing of shapes.
+BORDER = 20
+FONTSIZE = 24
+
+# Configuration for CS and DC pins (these are FeatherWing defaults on M0/M4):
+cs_pin = digitalio.DigitalInOut(board.CE0)
+dc_pin = digitalio.DigitalInOut(board.D25)
+reset_pin = digitalio.DigitalInOut(board.D24)
+
+# Config for display baudrate (default max is 24mhz):
+BAUDRATE = 24000000
+
+# Setup SPI bus using hardware SPI:
+spi = board.SPI()
+
+# Create the ILI9341 display:
+disp = ili9341.ILI9341(spi, cs=cs_pin, dc=dc_pin, rst=reset_pin, baudrate=BAUDRATE)
+
+# Create blank image for drawing.
+# Make sure to create image with mode 'RGB' for full color.
+height = disp.width   # we swap height/width to rotate it to landscape!
+width = disp.height
+image = Image.new('RGB', (width, height))
+rotation = 90
+
+# Get drawing object to draw on image.
+draw = ImageDraw.Draw(image)
+
+# Draw a green filled box as the background
+draw.rectangle((0, 0, width, height), fill=(0, 255, 0))
+disp.image(image, rotation)
+
+# Draw a smaller inner purple rectangle
+draw.rectangle((BORDER, BORDER, width - BORDER - 1, height - BORDER - 1),
+               fill=(170, 0, 136))
+
+# 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((width//2 - font_width//2, height//2 - font_height//2),
+          text, font=font, fill=(255, 255, 0))
+
+# Display image.
+disp.image(image, rotation)

examples/rgb_display_pillow_ili9341_image.py

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+import digitalio
+import board
+from PIL import Image, ImageDraw
+import adafruit_rgb_display.ili9341 as ili9341
+
+# Configuration for CS and DC pins (these are FeatherWing defaults on M0/M4):
+cs_pin = digitalio.DigitalInOut(board.CE0)
+dc_pin = digitalio.DigitalInOut(board.D25)
+reset_pin = digitalio.DigitalInOut(board.D24)
+
+# Config for display baudrate (default max is 24mhz):
+BAUDRATE = 64000000
+
+# Setup SPI bus using hardware SPI:
+spi = board.SPI()
+
+# Create the ILI9341 display:
+disp = ili9341.ILI9341(spi, cs=cs_pin, dc=dc_pin, rst=reset_pin, baudrate=BAUDRATE)
+
+# Create blank image for drawing.
+# Make sure to create image with mode 'RGB' for full color.
+height = disp.width   # we swap height/width to rotate it to landscape!
+width = disp.height
+image = Image.new('RGB', (width, height))
+rotation = 90
+
+# Get drawing object to draw on image.
+draw = ImageDraw.Draw(image)
+
+# Draw a black filled box to clear the image.
+draw.rectangle((0, 0, width, height), outline=0, fill=(0, 0, 0))
+disp.image(image, rotation)
+
+image = Image.open("blinka.png")
+
+# Scale the image to the smaller screen dimension
+image_ratio = image.width / image.height
+screen_ratio = width / height
+if screen_ratio < image_ratio:
+    scaled_width = image.width * height // image.height
+    scaled_height = height
+else:
+    scaled_width = width
+    scaled_height = image.height * width // image.width
+image = image.resize((scaled_width, scaled_height), Image.BICUBIC)
+
+# Crop and center the image
+x = scaled_width // 2 - width // 2
+y = scaled_height // 2 - height // 2
+image = image.crop((x, y, x + width, y + height))
+
+# Display image.
+disp.image(image, rotation)

examples/rgb_display_pillow_ili9341_stats.py

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+import time
+import subprocess
+import digitalio
+import board
+from PIL import Image, ImageDraw, ImageFont
+import adafruit_rgb_display.ili9341 as ili9341
+
+
+# Configuration for CS and DC pins (these are FeatherWing defaults on M0/M4):
+cs_pin = digitalio.DigitalInOut(board.CE0)
+dc_pin = digitalio.DigitalInOut(board.D25)
+reset_pin = digitalio.DigitalInOut(board.D24)
+
+# Config for display baudrate (default max is 24mhz):
+BAUDRATE = 24000000
+
+# Setup SPI bus using hardware SPI:
+spi = board.SPI()
+
+# Create the ILI9341 display:
+disp = ili9341.ILI9341(spi, cs=cs_pin, dc=dc_pin, rst=reset_pin, baudrate=BAUDRATE)
+
+# Create blank image for drawing.
+# Make sure to create image with mode 'RGB' for full color.
+height = disp.width   # we swap height/width to rotate it to landscape!
+width = disp.height
+image = Image.new('RGB', (width, height))
+rotation = 90
+
+# Get drawing object to draw on image.
+draw = ImageDraw.Draw(image)
+
+# Draw a black filled box to clear the image.
+draw.rectangle((0, 0, width, height), outline=0, fill=(0, 0, 0))
+disp.image(image, rotation)
+
+# Draw some shapes.
+# First define some constants to allow easy resizing of shapes.
+padding = -2
+top = padding
+bottom = height-padding
+
+# Move left to right keeping track of the current x position for drawing shapes.
+x = 0
+
+
+# Alternatively load a TTF font.  Make sure the .ttf font file is in the
+# same directory as the python script!
+# Some other nice fonts to try: http://www.dafont.com/bitmap.php
+font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', 24)
+
+while True:
+    # Draw a black filled box to clear the image.
+    draw.rectangle((0, 0, width, height), outline=0, fill=0)
+
+    # Shell scripts for system monitoring from here:
+    # https://unix.stackexchange.com/questions/119126/command-to-display-memory-usage-disk-usage-and-cpu-load
+    cmd = "hostname -I | cut -d\' \' -f1"
+    IP = "IP: "+subprocess.check_output(cmd, shell=True).decode("utf-8")
+    cmd = "top -bn1 | grep load | awk '{printf \"CPU Load: %.2f\", $(NF-2)}'"
+    CPU = subprocess.check_output(cmd, shell=True).decode("utf-8")
+    cmd = "free -m | awk 'NR==2{printf \"Mem: %s/%s MB  %.2f%%\", $3,$2,$3*100/$2 }'"
+    MemUsage = subprocess.check_output(cmd, shell=True).decode("utf-8")
+    cmd = "df -h | awk '$NF==\"/\"{printf \"Disk: %d/%d GB  %s\", $3,$2,$5}'"
+    Disk = subprocess.check_output(cmd, shell=True).decode("utf-8")
+    cmd = "cat /sys/class/thermal/thermal_zone0/temp |  awk \'{printf \"CPU Temp: %.1f C\", $(NF-0) / 1000}\'" # pylint: disable=line-too-long
+    Temp = subprocess.check_output(cmd, shell=True).decode("utf-8")
+
+    # Write four lines of text.
+    y = top
+    draw.text((x, y), IP, font=font, fill="#FFFFFF")
+    y += font.getsize(IP)[1]
+    draw.text((x, y), CPU, font=font, fill="#FFFF00")
+    y += font.getsize(CPU)[1]
+    draw.text((x, y), MemUsage, font=font, fill="#00FF00")
+    y += font.getsize(MemUsage)[1]
+    draw.text((x, y), Disk, font=font, fill="#0000FF")
+    y += font.getsize(Disk)[1]
+    draw.text((x, y), Temp, font=font, fill="#FF00FF")
+
+    # Display image.
+    disp.image(image, rotation)
+    time.sleep(.1)