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makermelissamakermelissa
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Merge pull request #32 from makermelissa/master
Added Pillow ILI9341 Examples
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‎examples/rgb_display_pillow_ili9341_demo.py

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

‎examples/rgb_display_pillow_ili9341_image.py

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

‎examples/rgb_display_pillow_ili9341_stats.py

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

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