1948e4b1ba
Per request the full portable environment is now in git: a fresh clone's tools/ runs everything with zero installation. Only regenerable release zips and the dev venv stay ignored.
76 lines
1.8 KiB
Python
76 lines
1.8 KiB
Python
"""
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Communicating with Bluetooth hardware requires calling OS-specific APIs. These
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are abstracted as "backends" in Bleak.
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The backend will be automatically selected based on the operating system Bleak
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is running on. In some cases, this may also depend on a specific runtime, like
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Pythonista on iOS.
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"""
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import enum
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import os
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import platform
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import sys
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from bleak.exc import BleakError
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class BleakBackend(str, enum.Enum):
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"""
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Identifiers for available built-in Bleak backends.
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.. versionadded:: 2.0
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"""
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P4ANDROID = "p4android"
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"""
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Python for Android backend.
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"""
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BLUEZ_DBUS = "bluez_dbus"
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"""
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BlueZ D-Bus backend for Linux.
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"""
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PYTHONISTA_CB = "pythonista_cb"
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"""
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Pythonista CoreBluetooth backend for iOS and macOS.
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"""
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CORE_BLUETOOTH = "core_bluetooth"
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"""
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CoreBluetooth backend for macOS.
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"""
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WIN_RT = "win_rt"
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"""
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Windows Runtime backend for Windows.
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"""
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def get_default_backend() -> BleakBackend:
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"""
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Returns the preferred backend for the current platform/environment.
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.. versionadded:: 2.0
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"""
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if os.environ.get("P4A_BOOTSTRAP") is not None:
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return BleakBackend.P4ANDROID
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if platform.system() == "Linux":
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return BleakBackend.BLUEZ_DBUS
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if sys.platform == "ios" and "Pythonista3.app" in sys.executable:
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# Must be resolved before checking for "Darwin" (macOS),
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# as both the Pythonista app for iOS and macOS
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# return "Darwin" from platform.system()
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return BleakBackend.PYTHONISTA_CB
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if platform.system() == "Darwin":
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return BleakBackend.CORE_BLUETOOTH
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if platform.system() == "Windows":
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return BleakBackend.WIN_RT
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raise BleakError(f"Unsupported platform: {platform.system()}")
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