1  """
 2  This test will initialize the display using displayio and draw a solid white
 3  background, a smaller black rectangle, and some white text.
 4  """
 5  
 6  import board
 7  import displayio
 8  import terminalio
 9  from adafruit_display_text import label
10  import adafruit_ssd1325
11  
12  displayio.release_displays()
13  
14  # Use for SPI
15  spi = board.SPI()
16  oled_cs = board.D5
17  oled_dc = board.D6
18  display_bus = displayio.FourWire(
19      spi, command=oled_dc, chip_select=oled_cs, baudrate=1000000, reset=board.D9
20  )
21  
22  # Use for I2C
23  # i2c = board.I2C()
24  # display_bus = displayio.I2CDisplay(i2c, device_address=0x3c)
25  
26  WIDTH = 128
27  HEIGHT = 64
28  BORDER = 8
29  FONTSCALE = 1
30  
31  display = adafruit_ssd1325.SSD1325(display_bus, width=WIDTH, height=HEIGHT)
32  
33  # Make the display context
34  splash = displayio.Group(max_size=10)
35  display.show(splash)
36  
37  color_bitmap = displayio.Bitmap(display.width, display.height, 1)
38  color_palette = displayio.Palette(1)
39  color_palette[0] = 0xFFFFFF  # White
40  
41  bg_sprite = displayio.TileGrid(color_bitmap, pixel_shader=color_palette, x=0, y=0)
42  splash.append(bg_sprite)
43  
44  # Draw a smaller inner rectangle
45  inner_bitmap = displayio.Bitmap(
46      display.width - BORDER * 2, display.height - BORDER * 2, 1
47  )
48  inner_palette = displayio.Palette(1)
49  inner_palette[0] = 0x000000  # Black
50  inner_sprite = displayio.TileGrid(
51      inner_bitmap, pixel_shader=inner_palette, x=BORDER, y=BORDER
52  )
53  splash.append(inner_sprite)
54  
55  # Draw a label
56  text = "Hello World!"
57  text_area = label.Label(terminalio.FONT, text=text, color=0x888888)
58  text_width = text_area.bounding_box[2] * FONTSCALE
59  text_group = displayio.Group(
60      max_size=10,
61      scale=FONTSCALE,
62      x=display.width // 2 - text_width // 2,
63      y=display.height // 2,
64  )
65  text_group.append(text_area)  # Subgroup for text scaling
66  splash.append(text_group)
67  
68  while True:
69      pass