circuitpython/tests/multi_bluetooth/ble_gattc_discover_services.py

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# Test BLE GAP connect/disconnect
from micropython import const
import time, machine, bluetooth
TIMEOUT_MS = 5000
_IRQ_CENTRAL_CONNECT = const(1 << 0)
_IRQ_CENTRAL_DISCONNECT = const(1 << 1)
_IRQ_PERIPHERAL_CONNECT = const(1 << 6)
_IRQ_PERIPHERAL_DISCONNECT = const(1 << 7)
_IRQ_GATTC_SERVICE_RESULT = const(1 << 8)
UUID_A = bluetooth.UUID(0x180D)
UUID_B = bluetooth.UUID("A5A5A5A5-FFFF-9999-1111-5A5A5A5A5A5A")
SERVICE_A = (
UUID_A,
(),
)
SERVICE_B = (
UUID_B,
(),
)
SERVICES = (SERVICE_A, SERVICE_B)
last_event = None
last_data = None
num_service_result = 0
def irq(event, data):
global last_event, last_data, num_service_result
last_event = event
last_data = data
if event == _IRQ_CENTRAL_CONNECT:
print("_IRQ_CENTRAL_CONNECT")
elif event == _IRQ_CENTRAL_DISCONNECT:
print("_IRQ_CENTRAL_DISCONNECT")
elif event == _IRQ_PERIPHERAL_CONNECT:
print("_IRQ_PERIPHERAL_CONNECT")
elif event == _IRQ_PERIPHERAL_DISCONNECT:
print("_IRQ_PERIPHERAL_DISCONNECT")
elif event == _IRQ_GATTC_SERVICE_RESULT:
if data[3] == UUID_A or data[3] == UUID_B:
print("_IRQ_GATTC_SERVICE_RESULT", data[3])
num_service_result += 1
def wait_for_event(event, timeout_ms):
t0 = time.ticks_ms()
while time.ticks_diff(time.ticks_ms(), t0) < timeout_ms:
if isinstance(event, int):
if last_event == event:
break
elif event():
break
machine.idle()
# Acting in peripheral role.
def instance0():
multitest.globals(BDADDR=ble.config("mac"))
ble.gatts_register_services(SERVICES)
print("gap_advertise")
ble.gap_advertise(20_000, b"\x02\x01\x06\x04\xffMPY")
multitest.next()
try:
wait_for_event(_IRQ_CENTRAL_CONNECT, TIMEOUT_MS)
wait_for_event(_IRQ_CENTRAL_DISCONNECT, TIMEOUT_MS)
finally:
ble.active(0)
# Acting in central role.
def instance1():
multitest.next()
try:
# Connect to peripheral and then disconnect.
print("gap_connect")
ble.gap_connect(0, BDADDR)
wait_for_event(_IRQ_PERIPHERAL_CONNECT, TIMEOUT_MS)
if last_event != _IRQ_PERIPHERAL_CONNECT:
return
conn_handle, _, _ = last_data
# Discover services.
ble.gattc_discover_services(conn_handle)
wait_for_event(lambda: num_service_result == 2, TIMEOUT_MS)
# Disconnect from peripheral.
print("gap_disconnect:", ble.gap_disconnect(conn_handle))
wait_for_event(_IRQ_PERIPHERAL_DISCONNECT, TIMEOUT_MS)
finally:
ble.active(0)
ble = bluetooth.BLE()
ble.active(1)
ble.irq(irq)