87 lines
2.5 KiB
Python
87 lines
2.5 KiB
Python
# SPDX-FileCopyrightText: 2018 John Edgar Park for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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# Magic 9 Ball
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# Turn HalloWing face down and then face up to change images at random
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# place 128 x 128 pixel 24-bit .bmp images at root level of HalloWing
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import time
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import os
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import random
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import board
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import displayio
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import adafruit_lis3dh
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splash = displayio.Group()
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board.DISPLAY.show(splash)
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SENSITIVITY = 5 # reading in Z direction to trigger, adjustable
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images = list(filter(lambda x: x.endswith("bmp"), os.listdir("/")))
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i = random.randint(0, (len(images)-1)) # initial image is randomly selected
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# Set up accelerometer on I2C bus, 4G range:
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i2c = board.I2C() # uses board.SCL and board.SDA
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# i2c = board.STEMMA_I2C() # For using the built-in STEMMA QT connector on a microcontroller
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ACCEL = adafruit_lis3dh.LIS3DH_I2C(i2c, address=0x18)
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ACCEL.range = adafruit_lis3dh.RANGE_4_G
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while True:
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shaken = False
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print("Image load {}".format(images[i]))
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# CircuitPython 6 & 7 compatible
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try:
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f = open(images[i], "rb")
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odb = displayio.OnDiskBitmap(f)
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except ValueError:
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print("Image unsupported {}".format(images[i]))
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del images[i]
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continue
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face = displayio.TileGrid(odb, pixel_shader=getattr(odb, 'pixel_shader', displayio.ColorConverter()))
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# # CircuitPython 7+ compatible
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# try:
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# odb = displayio.OnDiskBitmap(images[i])
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# except ValueError:
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# print("Image unsupported {}".format(images[i]))
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# del images[i]
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# continue
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# face = displayio.TileGrid(odb, pixel_shader=odb.pixel_shader)
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splash.append(face)
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# Wait for the image to load.
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try:
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board.DISPLAY.refresh(target_frames_per_second=60)
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except AttributeError:
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board.DISPLAY.wait_for_frame()
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# Fade up the backlight
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for b in range(101):
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board.DISPLAY.brightness = b / 100
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time.sleep(0.01) # default (0.01)
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# Wait until the board gets shaken
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while not shaken:
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try:
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ACCEL_Z = ACCEL.acceleration[2] # Read Z axis acceleration
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except OSError:
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pass
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# print(ACCEL_Z) # uncomment to see the accelerometer z reading
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if ACCEL_Z > SENSITIVITY:
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shaken = True
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# Fade down the backlight
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for b in range(100, 0, -1):
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board.DISPLAY.brightness = b
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time.sleep(0.005) # default (0.005)
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splash.pop()
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i = random.randint(0, (len(images)-1)) # pick a new random image
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# print("shaken")
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faceup = False
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i %= len(images) - 1
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