1  """
 2  This demo will draw a few rectangles onto the screen along with some text
 3  on top of that.
 4  
 5  This example is for use on (Linux) computers that are using CPython with
 6  Adafruit Blinka to support CircuitPython libraries. CircuitPython does
 7  not support PIL/pillow (python imaging library)!
 8  
 9  Author(s): Melissa LeBlanc-Williams for Adafruit Industries
10  """
11  
12  import digitalio
13  import board
14  from PIL import Image, ImageDraw, ImageFont
15  import adafruit_rgb_display.ili9341 as ili9341
16  import adafruit_rgb_display.st7789 as st7789  # pylint: disable=unused-import
17  import adafruit_rgb_display.hx8357 as hx8357  # pylint: disable=unused-import
18  import adafruit_rgb_display.st7735 as st7735  # pylint: disable=unused-import
19  import adafruit_rgb_display.ssd1351 as ssd1351  # pylint: disable=unused-import
20  import adafruit_rgb_display.ssd1331 as ssd1331  # pylint: disable=unused-import
21  
22  # First define some constants to allow easy resizing of shapes.
23  BORDER = 20
24  FONTSIZE = 24
25  
26  # Configuration for CS and DC pins (these are PiTFT defaults):
27  cs_pin = digitalio.DigitalInOut(board.CE0)
28  dc_pin = digitalio.DigitalInOut(board.D25)
29  reset_pin = digitalio.DigitalInOut(board.D24)
30  
31  # Config for display baudrate (default max is 24mhz):
32  BAUDRATE = 24000000
33  
34  # Setup SPI bus using hardware SPI:
35  spi = board.SPI()
36  
37  # pylint: disable=line-too-long
38  # Create the display:
39  # disp = st7789.ST7789(spi, rotation=90,                            # 2.0" ST7789
40  # disp = st7789.ST7789(spi, height=240, y_offset=80, rotation=180,  # 1.3", 1.54" ST7789
41  # disp = st7789.ST7789(spi, rotation=90, width=135, height=240, x_offset=53, y_offset=40, # 1.14" ST7789
42  # disp = hx8357.HX8357(spi, rotation=180,                           # 3.5" HX8357
43  # disp = st7735.ST7735R(spi, rotation=90,                           # 1.8" ST7735R
44  # disp = st7735.ST7735R(spi, rotation=270, height=128, x_offset=2, y_offset=3,   # 1.44" ST7735R
45  # disp = st7735.ST7735R(spi, rotation=90, bgr=True,                 # 0.96" MiniTFT ST7735R
46  # disp = ssd1351.SSD1351(spi, rotation=180,                         # 1.5" SSD1351
47  # disp = ssd1351.SSD1351(spi, height=96, y_offset=32, rotation=180, # 1.27" SSD1351
48  # disp = ssd1331.SSD1331(spi, rotation=180,                         # 0.96" SSD1331
49  disp = ili9341.ILI9341(
50      spi,
51      rotation=90,  # 2.2", 2.4", 2.8", 3.2" ILI9341
52      cs=cs_pin,
53      dc=dc_pin,
54      rst=reset_pin,
55      baudrate=BAUDRATE,
56  )
57  # pylint: enable=line-too-long
58  
59  # Create blank image for drawing.
60  # Make sure to create image with mode 'RGB' for full color.
61  if disp.rotation % 180 == 90:
62      height = disp.width  # we swap height/width to rotate it to landscape!
63      width = disp.height
64  else:
65      width = disp.width  # we swap height/width to rotate it to landscape!
66      height = disp.height
67  
68  image = Image.new("RGB", (width, height))
69  
70  # Get drawing object to draw on image.
71  draw = ImageDraw.Draw(image)
72  
73  # Draw a green filled box as the background
74  draw.rectangle((0, 0, width, height), fill=(0, 255, 0))
75  disp.image(image)
76  
77  # Draw a smaller inner purple rectangle
78  draw.rectangle(
79      (BORDER, BORDER, width - BORDER - 1, height - BORDER - 1), fill=(170, 0, 136)
80  )
81  
82  # Load a TTF Font
83  font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", FONTSIZE)
84  
85  # Draw Some Text
86  text = "Hello World!"
87  (font_width, font_height) = font.getsize(text)
88  draw.text(
89      (width // 2 - font_width // 2, height // 2 - font_height // 2),
90      text,
91      font=font,
92      fill=(255, 255, 0),
93  )
94  
95  # Display image.
96  disp.image(image)