1  """
 2  This test will initialize the display using displayio and draw a solid green
 3  background, a smaller purple rectangle, and some yellow text.
 4  
 5  Pinouts are for the 1.14" Mini PiTFT and should be run in CPython.
 6  """
 7  import board
 8  import terminalio
 9  import displayio
10  from adafruit_display_text import label
11  from adafruit_st7789 import ST7789
12  
13  # First set some parameters used for shapes and text
14  BORDER = 20
15  FONTSCALE = 2
16  BACKGROUND_COLOR = 0x00FF00  # Bright Green
17  FOREGROUND_COLOR = 0xAA0088  # Purple
18  TEXT_COLOR = 0xFFFF00
19  
20  # Release any resources currently in use for the displays
21  displayio.release_displays()
22  
23  spi = board.SPI()
24  tft_cs = board.CE0
25  tft_dc = board.D25
26  
27  display_bus = displayio.FourWire(spi, command=tft_dc, chip_select=tft_cs)
28  display = ST7789(
29      display_bus, rotation=90, width=240, height=135, rowstart=40, colstart=53
30  )
31  
32  # Make the display context
33  splash = displayio.Group(max_size=10)
34  display.show(splash)
35  
36  color_bitmap = displayio.Bitmap(display.width, display.height, 1)
37  color_palette = displayio.Palette(1)
38  color_palette[0] = BACKGROUND_COLOR
39  
40  bg_sprite = displayio.TileGrid(color_bitmap, pixel_shader=color_palette, x=0, y=0)
41  splash.append(bg_sprite)
42  
43  # Draw a smaller inner rectangle
44  inner_bitmap = displayio.Bitmap(
45      display.width - BORDER * 2, display.height - BORDER * 2, 1
46  )
47  inner_palette = displayio.Palette(1)
48  inner_palette[0] = FOREGROUND_COLOR
49  inner_sprite = displayio.TileGrid(
50      inner_bitmap, pixel_shader=inner_palette, x=BORDER, y=BORDER
51  )
52  splash.append(inner_sprite)
53  
54  # Draw a label
55  text = "Hello World!"
56  text_area = label.Label(terminalio.FONT, text=text, color=TEXT_COLOR)
57  text_width = text_area.bounding_box[2] * FONTSCALE
58  text_group = displayio.Group(
59      max_size=10,
60      scale=FONTSCALE,
61      x=display.width // 2 - text_width // 2,
62      y=display.height // 2,
63  )
64  text_group.append(text_area)  # Subgroup for text scaling
65  splash.append(text_group)
66  
67  while True:
68      pass