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| 1 | +# Test notification-specific behavior. |
| 2 | + |
| 3 | +import sys |
| 4 | + |
| 5 | +sys.path.append("") |
| 6 | + |
| 7 | +from micropython import const |
| 8 | +import time, machine |
| 9 | + |
| 10 | +import uasyncio as asyncio |
| 11 | +import aioble |
| 12 | +import bluetooth |
| 13 | + |
| 14 | +TIMEOUT_MS = 5000 |
| 15 | + |
| 16 | +SERVICE_UUID = bluetooth.UUID("A5A5A5A5-FFFF-9999-1111-5A5A5A5A5A5A") |
| 17 | +CHAR_UUID = bluetooth.UUID("00000000-1111-2222-3333-444444444444") |
| 18 | + |
| 19 | + |
| 20 | +# Acting in peripheral role. |
| 21 | +async def instance0_task(): |
| 22 | + service = aioble.Service(SERVICE_UUID) |
| 23 | + characteristic = aioble.Characteristic(service, CHAR_UUID, read=True, notify=True) |
| 24 | + aioble.register_services(service) |
| 25 | + |
| 26 | + multitest.globals(BDADDR=aioble.config("mac")) |
| 27 | + multitest.next() |
| 28 | + |
| 29 | + # Wait for central to connect to us. |
| 30 | + print("advertise") |
| 31 | + connection = await aioble.advertise( |
| 32 | + 20_000, adv_data=b"\x02\x01\x06\x04\xffMPY", timeout_ms=TIMEOUT_MS |
| 33 | + ) |
| 34 | + print("connected") |
| 35 | + |
| 36 | + # Send a subscribed-write (but client isn't subscribed, won't send anything). |
| 37 | + multitest.wait("discovery") |
| 38 | + await asyncio.sleep_ms(100) |
| 39 | + characteristic.write("before-subscribe", send_update=True) |
| 40 | + |
| 41 | + # Send a subscribed-write (now client is subscribed, client should get notified). |
| 42 | + multitest.wait("subscribed") |
| 43 | + await asyncio.sleep_ms(100) |
| 44 | + characteristic.write("after-subscribe", send_update=True) |
| 45 | + |
| 46 | + # Send a subscribed-write (now client is unsubscribed, won't send anything). |
| 47 | + multitest.wait("unsubscribed") |
| 48 | + await asyncio.sleep_ms(100) |
| 49 | + characteristic.write("after-unsubscribe", send_update=True) |
| 50 | + |
| 51 | + # Send 5 direct notifications. |
| 52 | + multitest.wait("start-direct") |
| 53 | + for i in range(5): |
| 54 | + # Send 1 notification each time, except for 3 quick notifications the third time. |
| 55 | + # The client should only see the last one. |
| 56 | + for j in range(3 if i == 2 else 1): |
| 57 | + if j > 0: |
| 58 | + await asyncio.sleep_ms(100) |
| 59 | + msg = "direct-{}-{}".format(i, j) |
| 60 | + print("notify", msg) |
| 61 | + characteristic.notify(connection, msg) |
| 62 | + |
| 63 | + # Tell client to wait for notification. |
| 64 | + multitest.broadcast("notified") |
| 65 | + # Wait until client is ready for next notification. |
| 66 | + multitest.wait("next") |
| 67 | + |
| 68 | + # Wait for the central to disconnect. |
| 69 | + await connection.disconnected(timeout_ms=TIMEOUT_MS) |
| 70 | + print("disconnected") |
| 71 | + |
| 72 | + |
| 73 | +def instance0(): |
| 74 | + try: |
| 75 | + asyncio.run(instance0_task()) |
| 76 | + finally: |
| 77 | + aioble.stop() |
| 78 | + |
| 79 | + |
| 80 | +# Acting in central role. |
| 81 | +async def instance1_task(): |
| 82 | + multitest.next() |
| 83 | + |
| 84 | + # Connect to peripheral and then disconnect. |
| 85 | + print("connect") |
| 86 | + device = aioble.Device(*BDADDR) |
| 87 | + connection = await device.connect(timeout_ms=TIMEOUT_MS) |
| 88 | + |
| 89 | + # Discover characteristics. |
| 90 | + service = await connection.service(SERVICE_UUID) |
| 91 | + print("service", service.uuid) |
| 92 | + characteristic = await service.characteristic(CHAR_UUID) |
| 93 | + print("characteristic", characteristic.uuid) |
| 94 | + |
| 95 | + # Expect to not receive a notification (not subscribed). |
| 96 | + multitest.broadcast("discovery") |
| 97 | + try: |
| 98 | + await characteristic.notified(timeout_ms=500) |
| 99 | + print("fail") |
| 100 | + return |
| 101 | + except asyncio.TimeoutError: |
| 102 | + print("no notification") |
| 103 | + |
| 104 | + # Subscribe and expect a notification. |
| 105 | + await characteristic.subscribe(notify=True) |
| 106 | + multitest.broadcast("subscribed") |
| 107 | + value = await characteristic.notified() |
| 108 | + print("notified", value) |
| 109 | + |
| 110 | + # Unsubscribe, and expect not to receive a notification. |
| 111 | + await characteristic.subscribe(notify=False) |
| 112 | + multitest.broadcast("unsubscribed") |
| 113 | + try: |
| 114 | + await characteristic.notified(timeout_ms=500) |
| 115 | + print("fail") |
| 116 | + return |
| 117 | + except asyncio.TimeoutError: |
| 118 | + print("no notification") |
| 119 | + |
| 120 | + # Receive 5 notifications. |
| 121 | + multitest.broadcast("start-direct") |
| 122 | + for i in range(5): |
| 123 | + multitest.wait("notified") |
| 124 | + await asyncio.sleep_ms(200) |
| 125 | + value = await characteristic.notified() |
| 126 | + print("notified", value) |
| 127 | + |
| 128 | + # Expect that after receiving a notification we don't get another one |
| 129 | + # until we broadcast to the server. |
| 130 | + try: |
| 131 | + value = await characteristic.notified(timeout_ms=100) |
| 132 | + print("unexpected notify", value) |
| 133 | + except asyncio.TimeoutError: |
| 134 | + pass |
| 135 | + |
| 136 | + multitest.broadcast("next") |
| 137 | + |
| 138 | + # Disconnect from peripheral. |
| 139 | + print("disconnect") |
| 140 | + await connection.disconnect(timeout_ms=TIMEOUT_MS) |
| 141 | + print("disconnected") |
| 142 | + |
| 143 | + |
| 144 | +def instance1(): |
| 145 | + try: |
| 146 | + asyncio.run(instance1_task()) |
| 147 | + finally: |
| 148 | + aioble.stop() |
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