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# Test BLE GAP device name get/set
from micropython import const
import time, machine, bluetooth
TIMEOUT_MS = 5000
_IRQ_CENTRAL_CONNECT = const(1)
_IRQ_CENTRAL_DISCONNECT = const(2)
_IRQ_PERIPHERAL_CONNECT = const(7)
_IRQ_PERIPHERAL_DISCONNECT = const(8)
_IRQ_GATTC_CHARACTERISTIC_RESULT = const(11)
_IRQ_GATTC_CHARACTERISTIC_DONE = const(12)
_IRQ_GATTC_READ_RESULT = const(15)
_IRQ_GATTC_READ_DONE = const(16)
GAP_DEVICE_NAME_UUID = bluetooth.UUID(0x2A00)
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")
elif event == _IRQ_GATTC_CHARACTERISTIC_RESULT:
if data[-1] == GAP_DEVICE_NAME_UUID:
print("_IRQ_GATTC_CHARACTERISTIC_RESULT", data[-1])
waiting_events[event] = data[2]
else:
return
elif event == _IRQ_GATTC_CHARACTERISTIC_DONE:
print("_IRQ_GATTC_CHARACTERISTIC_DONE")
elif event == _IRQ_GATTC_READ_RESULT:
print("_IRQ_GATTC_READ_RESULT", bytes(data[-1]))
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"))
# Test setting and getting the GAP device name before registering services.
ble.config(gap_name="GAP_NAME")
print(ble.config("gap_name"))
# Create an empty service and start advertising.
ble.gatts_register_services([])
print("gap_advertise")
multitest.next()
try:
# Do multiple iterations to test changing the name.
for iteration in range(2):
# Set the GAP device name and start advertising.
ble.config(gap_name="GAP_NAME{}".format(iteration))
print(ble.config("gap_name"))
ble.gap_advertise(20_000)
multitest.broadcast("peripheral:adv:{}".format(iteration))
# 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, 4 * TIMEOUT_MS)
finally:
ble.active(0)
# Acting in central role.
def instance1():
multitest.next()
try:
value_handle = None
for iteration in range(2):
# Wait for peripheral to start advertising.
multitest.wait("peripheral:adv:{}".format(iteration))
# Connect to peripheral.
print("gap_connect")
ble.gap_connect(*BDADDR)
conn_handle = wait_for_event(_IRQ_PERIPHERAL_CONNECT, TIMEOUT_MS)
if iteration == 0:
# Only do characteristic discovery on the first iteration,
# assume value_handle is unchanged on the second.
print("gattc_discover_characteristics")
ble.gattc_discover_characteristics(conn_handle, 1, 65535)
value_handle = wait_for_event(_IRQ_GATTC_CHARACTERISTIC_RESULT, TIMEOUT_MS)
wait_for_event(_IRQ_GATTC_CHARACTERISTIC_DONE, TIMEOUT_MS)
# Read the peripheral's GAP device name.
print("gattc_read")
ble.gattc_read(conn_handle, value_handle)
wait_for_event(_IRQ_GATTC_READ_RESULT, 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)
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