Simple test¶
Ensure your device works with this simple test.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | # The MIT License (MIT)
#
# Copyright (c) 2019 Dave Astels for Adafruit Industries
#
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# in the Software without restriction, including without limitation the rights
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# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# THE SOFTWARE.
"""Example of using save_bitmap"""
import board
import busio
import digitalio
from displayio import Bitmap, Palette
import adafruit_sdcard
import storage
from adafruit_bitmapsaver import save_pixels
#pylint:disable=invalid-name
print('Setting up SD card')
spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
cs = digitalio.DigitalInOut(board.SD_CS)
sdcard = adafruit_sdcard.SDCard(spi, cs)
vfs = storage.VfsFat(sdcard)
storage.mount(vfs, "/sd")
WHITE = 0xFFFFFF
BLACK = 0x000000
RED = 0xFF0000
ORANGE = 0xFFA500
YELLOW = 0xFFFF00
GREEN = 0x00FF00
BLUE = 0x0000FF
PURPLE = 0x800080
PINK = 0xFFC0CB
colors = (BLACK, RED, ORANGE, YELLOW, GREEN, BLUE, PURPLE, WHITE)
print('Building sample bitmap and palette')
bitmap = Bitmap(16, 16, 9)
palette = Palette(len(colors))
for i, c in enumerate(colors):
palette[i] = c
for x in range(16):
for y in range(16):
if x == 0 or y == 0 or x == 15 or y == 15:
bitmap[x, y] = 1
elif x == y:
bitmap[x, y] = 4
elif x == 15 - y:
bitmap[x, y] = 5
else:
bitmap[x, y] = 0
print('Saving bitmap')
save_pixels('/sd/test.bmp', bitmap, palette)
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