jepler/Adafruit_CircuitPython_BLE_Cycling_Speed_and_Cadence
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Merge pull request #4 from dhalbert/defer-packet_size

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defer creating buffers until MTU is known
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Dan Halbert 2020-05-04 14:32:18 -04:00 committed by GitHub
commit 95d4771ee8
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1 changed files with 6 additions and 3 deletions
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adafruit_ble_cycling_speed_and_cadence.py
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@ -145,9 +145,8 @@ class CyclingSpeedAndCadenceService(Service):
def __init__(self, service=None):
super().__init__(service=service)
self._measurement_buf = bytearray(
self.csc_measurement.packet_size # pylint: disable=no-member
)
# Defer creating buffer until we're definitely connected.
self._measurement_buf = None
@property
def measurement_values(self):
@ -169,6 +168,10 @@ class CyclingSpeedAndCadenceService(Service):
# uint16: Last Crank Event Time, in 1024ths of a second
#
if self._measurement_buf is None:
self._measurement_buf = bytearray(
self.csc_measurement.incoming_packet_length # pylint: disable=no-member
)
buf = self._measurement_buf
packet_length = self.csc_measurement.readinto(buf) # pylint: disable=no-member
if packet_length == 0: