This driver depends on:
Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.
Installing from PyPI¶
This library is not available on PyPI yet. Install documentation is included as a standard element. Stay tuned for PyPI availability!
On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:
pip3 install adafruit-circuitpython-ble-magic-light
To install system-wide (this may be required in some cases):
sudo pip3 install adafruit-circuitpython-ble-magic-light
To install in a virtual environment in your current project:
mkdir project-name && cd project-name python3 -m venv .env source .env/bin/activate pip3 install adafruit-circuitpython-ble-magic-light
"""This demo connects to a magic light and has it do a color wheel.""" import adafruit_ble import _bleio from adafruit_ble.advertising.standard import ProvideServicesAdvertisement from adafruit_ble_magic_light import MagicLightService # CircuitPython <6 uses its own ConnectionError type. So, is it if available. Otherwise, # the built in ConnectionError is used. connection_error = ConnectionError if hasattr(_bleio, "ConnectionError"): connection_error = _bleio.ConnectionError def find_connection(): for connection in radio.connections: if MagicLightService not in connection: continue return connection, connection[MagicLightService] return None, None # Start advertising before messing with the display so that we can connect immediately. radio = adafruit_ble.BLERadio() def wheel(pos): # Input a value 0 to 255 to get a color value. # The colours are a transition r - g - b - back to r. if pos < 0 or pos > 255: return (0, 0, 0) if pos < 85: return (255 - pos * 3, pos * 3, 0) if pos < 170: pos -= 85 return (0, 255 - pos * 3, pos * 3) pos -= 170 return (pos * 3, 0, 255 - pos * 3) active_connection, pixels = find_connection() current_notification = None app_icon_file = None while True: if not active_connection: print("Scanning for Magic Light") for scan in radio.start_scan(ProvideServicesAdvertisement): if MagicLightService in scan.services: active_connection = radio.connect(scan) try: pixels = active_connection[MagicLightService] except connection_error: print("disconnected") continue break radio.stop_scan() i = 0 while active_connection.connected: pixels = wheel(i % 256) i += 1 active_connection = None
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