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# Test BLE GAP connect/disconnect
from micropython import const
import time, machine, bluetooth
TIMEOUT_MS = 4000
_IRQ_CENTRAL_CONNECT = const(1)
_IRQ_CENTRAL_DISCONNECT = const(2)
_IRQ_PERIPHERAL_CONNECT = const(7)
_IRQ_PERIPHERAL_DISCONNECT = const(8)
waiting_events = {}
def irq(event, data):
if event == _IRQ_CENTRAL_CONNECT:
print("_IRQ_CENTRAL_CONNECT")
waiting_events[event] = data[0]
elif event == _IRQ_CENTRAL_DISCONNECT:
print("_IRQ_CENTRAL_DISCONNECT")
elif event == _IRQ_PERIPHERAL_CONNECT:
print("_IRQ_PERIPHERAL_CONNECT")
waiting_events[event] = data[0]
elif event == _IRQ_PERIPHERAL_DISCONNECT:
print("_IRQ_PERIPHERAL_DISCONNECT")
if event not in waiting_events:
waiting_events[event] = None
def wait_for_event(event, timeout_ms):
t0 = time.ticks_ms()
while time.ticks_diff(time.ticks_ms(), t0) < timeout_ms:
if event in waiting_events:
return waiting_events.pop(event)
machine.idle()
raise ValueError("Timeout waiting for {}".format(event))
# Acting in peripheral role.
def instance0():
multitest.globals(BDADDR=ble.config("mac"))
print("gap_advertise")
ble.gap_advertise(20_000, b"\x02\x01\x06\x04\xffMPY")
multitest.next()
try:
# Wait for central to connect, then wait for it to disconnect.
wait_for_event(_IRQ_CENTRAL_CONNECT, TIMEOUT_MS)
wait_for_event(_IRQ_CENTRAL_DISCONNECT, TIMEOUT_MS)
# Start advertising again.
print("gap_advertise")
ble.gap_advertise(20_000, b"\x02\x01\x06\x04\xffMPY")
# Wait for central to connect, then disconnect it.
conn_handle = wait_for_event(_IRQ_CENTRAL_CONNECT, TIMEOUT_MS)
print("gap_disconnect:", ble.gap_disconnect(conn_handle))
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(*BDADDR)
conn_handle = wait_for_event(_IRQ_PERIPHERAL_CONNECT, TIMEOUT_MS)
print("gap_disconnect:", ble.gap_disconnect(conn_handle))
wait_for_event(_IRQ_PERIPHERAL_DISCONNECT, TIMEOUT_MS)
# Connect to peripheral and then let the peripheral disconnect us.
# Extra scan timeout allows for the peripheral to receive the disconnect
# event and start advertising again.
print("gap_connect")
ble.gap_connect(BDADDR[0], BDADDR[1], 5000)
wait_for_event(_IRQ_PERIPHERAL_CONNECT, TIMEOUT_MS)
wait_for_event(_IRQ_PERIPHERAL_DISCONNECT, TIMEOUT_MS)
finally:
ble.active(0)
ble = bluetooth.BLE()
ble.active(1)
ble.irq(irq)
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