1  # SPDX-FileCopyrightText: 2020 Jeff Epler for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  import os
 6  import time
 7  
 8  import board
 9  import displayio
10  
11  display = board.DISPLAY
12  
13  # The bmp files on the sd card will be shown in alphabetical order
14  bmpfiles = sorted("/sd/" + fn for fn in os.listdir("/sd") if fn.lower().endswith("bmp"))
15  
16  while True:
17      if len(bmpfiles) == 0:
18          print("No BMP files found")
19          break
20  
21      for filename in bmpfiles:
22          print("showing", filename)
23  
24          # CircuitPython 6 & 7 compatible
25          bitmap_file = open(filename, "rb")
26          bitmap = displayio.OnDiskBitmap(bitmap_file)
27          tile_grid = displayio.TileGrid(
28              bitmap,
29              pixel_shader=getattr(bitmap, 'pixel_shader', displayio.ColorConverter())
30          )
31  
32          # # CircuitPython 7+ compatible
33          # bitmap = displayio.OnDiskBitmap(filename)
34          # tile_grid = displayio.TileGrid(bitmap, pixel_shader=bitmap.pixel_shader)
35  
36          group = displayio.Group()
37          group.append(tile_grid)
38          display.show(group)
39  
40          # Show the image for 10 seconds
41          time.sleep(10)