bmp_test.py

#code for Metro M4 with custom UF2 to make regular 32x16 RGB Matrix work
import board
import displayio
import framebufferio
import rgbmatrix
import adafruit_imageload

#displayio.release_displays()

# don't get hung up on this code
# it's my pin out for my shiled and it has been tested to work
"""
matrix = rgbmatrix.RGBMatrix(
    width=32, height=16, bit_depth=1,
    # change pins to match RGB shield mods
    rgb_pins=[board.D2, board.D3, board.D4, board.D5, board.D6, board.D7],
    addr_pins=[board.A0, board.A1, board.A2],
    clock_pin=board.A4, latch_pin=board.D8, output_enable_pin=board.D9)
display = framebufferio.FramebufferDisplay(matrix, auto_refresh=False)
"""
display = board.DISPLAY

# code from: https://learn.adafruit.com/circuitpython-display-support-using-displayio/display-a-bitmap
# bmp from https://learn.adafruit.com/circuitpython-display-support-using-displayio/sprite-sheet
bitmap, palette = adafruit_imageload.load("/cp_sprite_sheet.bmp",
                                         bitmap=displayio.Bitmap,
                                         palette=displayio.Palette)

# Create a TileGrid to hold the bitmap
tile_grid = displayio.TileGrid(bitmap, pixel_shader=palette)

# Create a Group to hold the TileGrid
group = displayio.Group()

# Add the TileGrid to the Group
group.append(tile_grid)

# Add the Group to the Display
display.show(group)

# Loop forever so you can enjoy your image
while True:
    pass