1  # The MIT License (MIT)
 2  #
 3  # Copyright (c) 2019 Dave Astels for Adafruit Industries
 4  #
 5  # Permission is hereby granted, free of charge, to any person obtaining a copy
 6  # of this software and associated documentation files (the "Software"), to deal
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 9  # copies of the Software, and to permit persons to whom the Software is
10  # furnished to do so, subject to the following conditions:
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12  # The above copyright notice and this permission notice shall be included in
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15  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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21  # THE SOFTWARE.
22  
23  """Example of using save_bitmap"""
24  
25  import board
26  import busio
27  import digitalio
28  from displayio import Bitmap, Palette
29  import adafruit_sdcard
30  import storage
31  from adafruit_bitmapsaver import save_pixels
32  
33  # pylint:disable=invalid-name
34  
35  print("Setting up SD card")
36  spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
37  cs = digitalio.DigitalInOut(board.SD_CS)
38  sdcard = adafruit_sdcard.SDCard(spi, cs)
39  vfs = storage.VfsFat(sdcard)
40  storage.mount(vfs, "/sd")
41  
42  WHITE = 0xFFFFFF
43  BLACK = 0x000000
44  RED = 0xFF0000
45  ORANGE = 0xFFA500
46  YELLOW = 0xFFFF00
47  GREEN = 0x00FF00
48  BLUE = 0x0000FF
49  PURPLE = 0x800080
50  PINK = 0xFFC0CB
51  
52  colors = (BLACK, RED, ORANGE, YELLOW, GREEN, BLUE, PURPLE, WHITE)
53  
54  print("Building sample bitmap and palette")
55  bitmap = Bitmap(16, 16, 9)
56  palette = Palette(len(colors))
57  for i, c in enumerate(colors):
58      palette[i] = c
59  
60  for x in range(16):
61      for y in range(16):
62          if x == 0 or y == 0 or x == 15 or y == 15:
63              bitmap[x, y] = 1
64          elif x == y:
65              bitmap[x, y] = 4
66          elif x == 15 - y:
67              bitmap[x, y] = 5
68          else:
69              bitmap[x, y] = 0
70  
71  print("Saving bitmap")
72  save_pixels("/sd/test.bmp", bitmap, palette)