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"""Interface to the BLEAK library in Linux for BLE calls |
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""" |
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import curio, asyncio, threading, logging |
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from curio.bridge import AsyncioLoop |
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import bleak |
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from bleak import BleakClient |
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class Bleak: |
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def __init__(self): |
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# Need to start an event loop |
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self.in_queue = curio.UniversalQueue() # Incoming message queue |
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self.out_queue = curio.UniversalQueue() # Outgoing message queue |
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self.devices = [] |
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#self.loop = threading.Thread(target=self.run, daemon=True) |
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#self.loop.start() |
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def run(self): |
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#self.loop = asyncio.new_event_loop() |
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#asyncio.set_event_loop(self.loop) |
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self.loop = asyncio.get_event_loop() |
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self.loop.run_until_complete(self.asyncio_loop()) |
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async def asyncio_loop(self): |
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# Wait for messages on in_queue |
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done = False |
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while not done: |
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msg = await self.in_queue.get() |
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if isinstance(msg, tuple): |
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msg, val = msg |
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await self.in_queue.task_done() |
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if msg == 'discover': |
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print('Awaiting on bleak discover') |
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devices = await bleak.discover(timeout=1, loop=self.loop) |
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print('Done Awaiting on bleak discover') |
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await self.out_queue.put(devices) |
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elif msg == 'connect': |
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device = BleakClient(address=val, loop=self.loop) |
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self.devices.append(device) |
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await device.connect() |
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await self.out_queue.put(device) |
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elif msg == 'tx': |
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device, char_uuid, msg_bytes = val |
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await device.write_gatt_char(char_uuid, msg_bytes) |
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elif msg == 'notify': |
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device, char_uuid, msg_handler = val |
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await device.start_notify(char_uuid, msg_handler) |
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elif msg =='quit': |
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logging.info('quitting') |
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for device in self.devices: |
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await device.disconnect() |
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done = True |
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else: |
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print(f'Unknown message to Bleak: {msg}') |
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virantha /
bricknil
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