193 lines
6.7 KiB
Python
193 lines
6.7 KiB
Python
# Test characteristic read/write/notify from both GATTS and GATTC.
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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_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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_IRQ_GATTS_INDICATE_DONE = const(20)
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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_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_INDICATE", bytes(data[-1]))
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elif event == _IRQ_GATTS_INDICATE_DONE:
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print("_IRQ_GATTS_INDICATE_DONE", 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")
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multitest.next()
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try:
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# Write initial characteristic value.
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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)
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# A
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# Wait for a write to the characteristic from the central,
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# then reply with a notification.
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wait_for_event(_IRQ_GATTS_WRITE, TIMEOUT_MS)
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print("gatts_write")
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ble.gatts_write(char_handle, "periph1")
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print("gatts_notify")
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ble.gatts_notify(conn_handle, char_handle)
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# B
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# Wait for a write to the characteristic from the central,
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# then reply with value-included notification.
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wait_for_event(_IRQ_GATTS_WRITE, TIMEOUT_MS)
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print("gatts_notify")
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ble.gatts_notify(conn_handle, char_handle, "periph2")
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# C
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# Wait for a write to the characteristic from the central,
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# then reply with an indication.
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wait_for_event(_IRQ_GATTS_WRITE, TIMEOUT_MS)
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print("gatts_write")
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ble.gatts_write(char_handle, "periph3")
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print("gatts_indicate")
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ble.gatts_indicate(conn_handle, char_handle)
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wait_for_event(_IRQ_GATTS_INDICATE_DONE, TIMEOUT_MS)
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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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# 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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# Write to the characteristic, which will trigger a notification.
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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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# A
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wait_for_event(_IRQ_GATTC_NOTIFY, TIMEOUT_MS)
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print("gattc_read") # Read the new value set immediately before notification.
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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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# Write to the characteristic, which will trigger a value-included notification.
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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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# B
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wait_for_event(_IRQ_GATTC_NOTIFY, TIMEOUT_MS)
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print("gattc_read") # Read value should be unchanged.
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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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# Write to the characteristic, which will trigger an indication.
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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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# C
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wait_for_event(_IRQ_GATTC_INDICATE, TIMEOUT_MS)
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print("gattc_read") # Read the new value set immediately before indication.
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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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# 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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