247 lines
8.9 KiB
Python
247 lines
8.9 KiB
Python
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# Test for sending notifications to subscribed clients.
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from micropython import const
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import time, machine, bluetooth
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TIMEOUT_MS = 5000
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_IRQ_CENTRAL_CONNECT = const(1)
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_IRQ_CENTRAL_DISCONNECT = const(2)
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_IRQ_GATTS_WRITE = const(3)
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_IRQ_PERIPHERAL_CONNECT = const(7)
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_IRQ_PERIPHERAL_DISCONNECT = const(8)
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_IRQ_GATTC_CHARACTERISTIC_RESULT = const(11)
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_IRQ_GATTC_CHARACTERISTIC_DONE = const(12)
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_IRQ_GATTC_DESCRIPTOR_RESULT = const(13)
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_IRQ_GATTC_DESCRIPTOR_DONE = const(14)
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_IRQ_GATTC_READ_RESULT = const(15)
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_IRQ_GATTC_READ_DONE = const(16)
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_IRQ_GATTC_WRITE_DONE = const(17)
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_IRQ_GATTC_NOTIFY = const(18)
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_IRQ_GATTC_INDICATE = const(19)
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_CCCD_UUID = bluetooth.UUID(const(0x2902))
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SERVICE_UUID = bluetooth.UUID("A5A5A5A5-FFFF-9999-1111-5A5A5A5A5A5A")
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CHAR_UUID = bluetooth.UUID("00000000-1111-2222-3333-444444444444")
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CHAR = (
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CHAR_UUID,
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bluetooth.FLAG_READ | bluetooth.FLAG_WRITE | bluetooth.FLAG_NOTIFY | bluetooth.FLAG_INDICATE,
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)
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SERVICE = (
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SERVICE_UUID,
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(CHAR,),
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)
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SERVICES = (SERVICE,)
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waiting_events = {}
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def irq(event, data):
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if event == _IRQ_CENTRAL_CONNECT:
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print("_IRQ_CENTRAL_CONNECT")
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waiting_events[event] = data[0]
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elif event == _IRQ_CENTRAL_DISCONNECT:
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print("_IRQ_CENTRAL_DISCONNECT")
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elif event == _IRQ_GATTS_WRITE:
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print("_IRQ_GATTS_WRITE", ble.gatts_read(data[-1]))
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elif event == _IRQ_PERIPHERAL_CONNECT:
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print("_IRQ_PERIPHERAL_CONNECT")
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waiting_events[event] = data[0]
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elif event == _IRQ_PERIPHERAL_DISCONNECT:
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print("_IRQ_PERIPHERAL_DISCONNECT")
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elif event == _IRQ_GATTC_CHARACTERISTIC_RESULT:
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# conn_handle, def_handle, value_handle, properties, uuid = data
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if data[-1] == CHAR_UUID:
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print("_IRQ_GATTC_CHARACTERISTIC_RESULT", data[-1])
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waiting_events[event] = data[2]
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else:
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return
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elif event == _IRQ_GATTC_CHARACTERISTIC_DONE:
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print("_IRQ_GATTC_CHARACTERISTIC_DONE")
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elif event == _IRQ_GATTC_DESCRIPTOR_RESULT:
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# conn_handle, dsc_handle, uuid = data
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if data[-1] == _CCCD_UUID:
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print("_IRQ_GATTC_DESCRIPTOR_RESULT", data[-1])
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waiting_events[event] = data[1]
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else:
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return
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elif event == _IRQ_GATTC_DESCRIPTOR_DONE:
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print("_IRQ_GATTC_DESCRIPTOR_DONE")
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elif event == _IRQ_GATTC_READ_RESULT:
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print("_IRQ_GATTC_READ_RESULT", bytes(data[-1]))
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elif event == _IRQ_GATTC_READ_DONE:
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print("_IRQ_GATTC_READ_DONE", data[-1])
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elif event == _IRQ_GATTC_WRITE_DONE:
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print("_IRQ_GATTC_WRITE_DONE", data[-1])
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elif event == _IRQ_GATTC_NOTIFY:
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print("_IRQ_GATTC_NOTIFY", bytes(data[-1]))
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elif event == _IRQ_GATTC_INDICATE:
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print("_IRQ_GATTC_NOTIFY", bytes(data[-1]))
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if event not in waiting_events:
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waiting_events[event] = None
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def wait_for_event(event, timeout_ms):
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t0 = time.ticks_ms()
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while time.ticks_diff(time.ticks_ms(), t0) < timeout_ms:
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if event in waiting_events:
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return waiting_events.pop(event)
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machine.idle()
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raise ValueError("Timeout waiting for {}".format(event))
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# Acting in peripheral role.
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def instance0():
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multitest.globals(BDADDR=ble.config("mac"))
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((char_handle,),) = ble.gatts_register_services(SERVICES)
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print("gap_advertise")
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ble.gap_advertise(20_000, b"\x02\x01\x06\x04\xffMPY") # \x04\x09MPY
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multitest.next()
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try:
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# Write initial characteristic value (will be read by client).
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ble.gatts_write(char_handle, "periph0") ###
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# Wait for central to connect to us.
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conn_handle = wait_for_event(_IRQ_CENTRAL_CONNECT, TIMEOUT_MS * 10)
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# A
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# Wait for a write to the characteristic from the central (to synchronise).
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wait_for_event(_IRQ_GATTS_WRITE, TIMEOUT_MS)
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print("sync A")
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# This should be local-only.
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ble.gatts_write(char_handle, "periph1")
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time.sleep_ms(100)
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# Update local-only, then force notify.
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ble.gatts_write(char_handle, "periph2")
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ble.gatts_notify(conn_handle, char_handle) ###
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time.sleep_ms(100)
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# Update local and notify subscribers. No notification should be sent.
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ble.gatts_write(char_handle, "periph3", True)
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time.sleep_ms(100)
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multitest.broadcast("A")
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# B
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# Synchronise with the client (which should now be subscribed for notify).
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wait_for_event(_IRQ_GATTS_WRITE, TIMEOUT_MS)
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print("sync B")
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# This should be local-only (send_update=False).
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ble.gatts_write(char_handle, "periph4", False)
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time.sleep_ms(100)
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# This should notify the subscribed client.
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ble.gatts_write(char_handle, "periph5", True) ###
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time.sleep_ms(100)
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multitest.broadcast("B")
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# C
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# Synchronise with the client (which should now be subscribed for indicate).
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wait_for_event(_IRQ_GATTS_WRITE, TIMEOUT_MS)
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print("sync C")
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# This should be local-only (send_update=False).
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ble.gatts_write(char_handle, "periph6", False)
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time.sleep_ms(100)
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# This should indicate the subscribed client.
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ble.gatts_write(char_handle, "periph7", True) ###
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time.sleep_ms(100)
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multitest.broadcast("C")
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# D
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# Synchronise with the client (which should now be unsubscribed).
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wait_for_event(_IRQ_GATTS_WRITE, TIMEOUT_MS)
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print("sync D")
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# This should be local-only (send_update=False).
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ble.gatts_write(char_handle, "periph8", False)
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time.sleep_ms(100)
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# This should be local-only (no more subscribers).
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ble.gatts_write(char_handle, "periph9", True)
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time.sleep_ms(100)
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# Update local-only, then another force notify.
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ble.gatts_write(char_handle, "periph10")
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ble.gatts_notify(conn_handle, char_handle) ###
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time.sleep_ms(100)
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multitest.broadcast("D")
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# Wait for the central to disconnect.
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wait_for_event(_IRQ_CENTRAL_DISCONNECT, TIMEOUT_MS)
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finally:
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ble.active(0)
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# Acting in central role.
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def instance1():
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multitest.next()
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try:
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# Connect to peripheral and then disconnect.
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print("gap_connect")
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ble.gap_connect(*BDADDR)
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conn_handle = wait_for_event(_IRQ_PERIPHERAL_CONNECT, TIMEOUT_MS)
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# Discover characteristics.
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ble.gattc_discover_characteristics(conn_handle, 1, 65535)
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value_handle = wait_for_event(_IRQ_GATTC_CHARACTERISTIC_RESULT, TIMEOUT_MS)
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wait_for_event(_IRQ_GATTC_CHARACTERISTIC_DONE, TIMEOUT_MS)
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# Discover CCCD.
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ble.gattc_discover_descriptors(conn_handle, value_handle, value_handle + 5)
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cccd_handle = wait_for_event(_IRQ_GATTC_DESCRIPTOR_RESULT, TIMEOUT_MS)
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wait_for_event(_IRQ_GATTC_DESCRIPTOR_DONE, TIMEOUT_MS)
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# Issue read of characteristic, should get initial value.
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print("gattc_read")
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ble.gattc_read(conn_handle, value_handle)
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wait_for_event(_IRQ_GATTC_READ_RESULT, TIMEOUT_MS)
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# While the four states are active, all incoming notifications
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# and indications will be printed by the event handler. We
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# should only expect to see certain ones.
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# Start unsubscribed.
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# Write to the characteristic (triggers A).
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print("gattc_write")
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ble.gattc_write(conn_handle, value_handle, "central0", 1)
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wait_for_event(_IRQ_GATTC_WRITE_DONE, TIMEOUT_MS)
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# Wait for A to complete.
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multitest.wait("A")
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# Subscribe for notify.
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ble.gattc_write(conn_handle, cccd_handle, b"\x01\x00", 1)
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wait_for_event(_IRQ_GATTC_WRITE_DONE, TIMEOUT_MS)
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# Write to the characteristic (triggers B).
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print("gattc_write")
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ble.gattc_write(conn_handle, value_handle, "central1", 1)
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wait_for_event(_IRQ_GATTC_WRITE_DONE, TIMEOUT_MS)
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# Wait for B to complete.
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multitest.wait("B")
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# Subscribe for indicate.
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ble.gattc_write(conn_handle, cccd_handle, b"\x02\x00", 1)
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wait_for_event(_IRQ_GATTC_WRITE_DONE, TIMEOUT_MS)
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# Write to the characteristic (triggers C).
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print("gattc_write")
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ble.gattc_write(conn_handle, value_handle, "central2", 1)
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wait_for_event(_IRQ_GATTC_WRITE_DONE, TIMEOUT_MS)
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# Wait for C to complete.
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multitest.wait("C")
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# Unsubscribe.
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ble.gattc_write(conn_handle, cccd_handle, b"\x00\x00", 1)
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wait_for_event(_IRQ_GATTC_WRITE_DONE, TIMEOUT_MS)
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# Write to the characteristic (triggers D).
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print("gattc_write")
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ble.gattc_write(conn_handle, value_handle, "central3", 1)
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wait_for_event(_IRQ_GATTC_WRITE_DONE, TIMEOUT_MS)
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# Wait for D to complete.
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multitest.wait("D")
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# Disconnect from peripheral.
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print("gap_disconnect:", ble.gap_disconnect(conn_handle))
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wait_for_event(_IRQ_PERIPHERAL_DISCONNECT, TIMEOUT_MS)
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finally:
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ble.active(0)
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ble = bluetooth.BLE()
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ble.active(1)
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ble.irq(irq)
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