Simple test

Ensure your device works with this simple test.

examples/bitmapsaver_simpletest.py
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# SPDX-FileCopyrightText: 2019 Dave Astels for Adafruit Industries
# SPDX-License-Identifier: MIT


"""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)
examples/bitmapsaver_screenshot_simpletest.py
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# SPDX-FileCopyrightText: 2019 Dave Astels for Adafruit Industries
# SPDX-License-Identifier: MIT


"""Example of taking a screenshot."""

# pylint:disable=invalid-name
import board
import digitalio
import busio
import adafruit_sdcard
import storage
from adafruit_bitmapsaver import save_pixels


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")

print("Taking Screenshot...")
save_pixels("/sd/screenshot.bmp")
print("Screenshot taken")