def setUpClass(cls) -> None:
super(TestGattWrites, cls).setUpClass()
cls.periph = cls.dev1
cls.central = cls.dev2
cls.periph.client.preferred_mtu_size = cls.periph.max_mtu_size
cls.write_size = cls.periph.client.preferred_mtu_size - 3
cls.service_uuid = Uuid128("00112233-4455-6677-8899-aabbccddeeff")
cls.write_char_uuid = cls.service_uuid.new_uuid_from_base(0x0000)
cls.write_no_resp_char_uuid = cls.service_uuid.new_uuid_from_base(
0x0001)
cls._setup_database()
cls._setup_connection()
# Up minimum log level to increase throughput (less writing to console)
cls.prev_log_level = logging.root.level
logging.root.setLevel("INFO")
def nrf_uuid_to_uuid(self, nrf_uuid):
"""
:type nrf_uuid: BLEUUID
:rtype: Uuid
"""
if nrf_uuid.base.type == 0:
raise ValueError("UUID Not registered: {}".format(nrf_uuid))
if nrf_uuid.base.type == nrf_types.BLEUUIDBase.BLE_UUID_TYPE_BLE:
return Uuid16(nrf_uuid.get_value())
base = None
for uuid_base in self.registered_vs_uuids:
if nrf_uuid.base.type == uuid_base.type:
base = uuid_base
if base is None:
raise ValueError("Unable to find registered 128-bit uuid: {}".format(nrf_uuid))
return Uuid128.combine_with_base(nrf_uuid.value, base.base)
from blatann.gatt import gatts
from blatann.uuid import Uuid128
PERIPHERAL_NAME = "Periph Test"
# Miscellaneous service, used for testing
MATH_SERVICE_UUID = Uuid128("deadbeef-0011-2345-6679-ab12ccd4f550")
# Hex conversion characteristic. A central writes a byte sequence to this characteristic
# and the peripheral will convert it to its hex representation. e.g. "0123" -> "30313233"
HEX_CONVERT_CHAR_UUID = MATH_SERVICE_UUID.new_uuid_from_base(0xbeaa)
# Counting characteristic. The peripheral will periodically send out a notification on this characteristic
# With a monotonically-increasing, 4-byte little-endian number
COUNTING_CHAR_UUID = MATH_SERVICE_UUID.new_uuid_from_base("1234")
# Properties for the hex conversion and counting characteristics
HEX_CONVERT_CHAR_PROPERTIES = gatts.GattsCharacteristicProperties(
read=True,
notify=True,
indicate=True,
write=True,
max_length=128,
variable_length=True)
COUNTING_CHAR_PROPERTIES = gatts.GattsCharacteristicProperties(
read=False, notify=True, max_length=4, variable_length=False)
# Time service, report's the current time. Also demonstrating another wait to create a UUID
_TIME_SERVICE_BASE_UUID = "beef0000-0123-4567-89ab-cdef01234567"
TIME_SERVICE_UUID = Uuid128.combine_with_base("dead", _TIME_SERVICE_BASE_UUID)
from blatann.gatt import gatts
from blatann.uuid import Uuid128
PERIPHERAL_NAME = "Periph Test"
# Miscellaneous service, used for testing
MATH_SERVICE_UUID = Uuid128("deadbeef-0011-2345-6679-ab12ccd4f550")
# Hex conversion characteristic. A central writes a byte sequence to this characteristic
# and the peripheral will convert it to its hex representation. e.g. "0123" -> "30313233"
HEX_CONVERT_CHAR_UUID = MATH_SERVICE_UUID.new_uuid_from_base(0xbeaa)
# Counting characteristic. The peripheral will periodically send out a notification on this characteristic
# With a monotonically-increasing, 4-byte little-endian number
COUNTING_CHAR_UUID = MATH_SERVICE_UUID.new_uuid_from_base("1234")
# Properties for the hex conversion and counting characteristics
_HEX_CONVERT_USER_DESC = gatts.GattsUserDescriptionProperties("Hex Converter")
HEX_CONVERT_CHAR_PROPERTIES = gatts.GattsCharacteristicProperties(
read=True,
notify=True,
indicate=True,
write=True,
max_length=128,
variable_length=True,
user_description=_HEX_CONVERT_USER_DESC)
_COUNTING_CHAR_USER_DESC = gatts.GattsUserDescriptionProperties("Counter")
COUNTING_CHAR_PROPERTIES = gatts.GattsCharacteristicProperties(
read=False,
notify=True,
from blatann.uuid import Uuid128
NORDIC_UART_SERVICE_UUID = Uuid128("6E400001-B5A3-F393-E0A9-E50E24DCCA9E")
# TX and RX characteristics are from the perspective of the client. The server will receive on TX and transmit on RX
NORDIC_UART_TX_CHARACTERISTIC_UUID = NORDIC_UART_SERVICE_UUID.new_uuid_from_base(
0x0002)
NORDIC_UART_RX_CHARACTERISTIC_UUID = NORDIC_UART_SERVICE_UUID.new_uuid_from_base(
0x0003)
# Slight deviation from Nordic's implementation so the client can read the server's characteristic size
NORDIC_UART_FEATURE_CHARACTERISTIC_UUID = NORDIC_UART_SERVICE_UUID.new_uuid_from_base(
0x0004)