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examples/bluetooth: Use UUIDs directly to add services to adv payload.

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This commit is contained in:
Jim Mussared
2019-10-22 12:31:40 +11:00
parent 56fc3edf98
commit 3e1af5b36f
3 changed files with 15 additions and 3 deletions
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15
examples/bluetooth/ble_advertising.py
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@@ -11,8 +11,14 @@ import struct
_ADV_TYPE_FLAGS = const(0x01)
_ADV_TYPE_NAME = const(0x09)
_ADV_TYPE_UUID16_COMPLETE = const(0x3)
_ADV_TYPE_UUID32_COMPLETE = const(0x5)
_ADV_TYPE_UUID128_COMPLETE = const(0x7)
_ADV_TYPE_UUID16_MORE = const(0x2)
_ADV_TYPE_UUID32_MORE = const(0x4)
_ADV_TYPE_UUID128_MORE = const(0x6)
_ADV_TYPE_APPEARANCE = const(0x19)
# Generate a payload to be passed to gap_advertise(adv_data=...).
def advertising_payload(limited_disc=False, br_edr=False, name=None, services=None, appearance=0):
payload = bytearray()
@@ -28,8 +34,13 @@ def advertising_payload(limited_disc=False, br_edr=False, name=None, services=No
if services:
for uuid in services:
# TODO: Support bluetooth.UUID class.
_append(_ADV_TYPE_UUID16_COMPLETE, struct.pack('<h', uuid))
b = bytes(uuid)
if len(b) == 2:
_append(_ADV_TYPE_UUID16_COMPLETE, b)
elif len(b) == 4:
_append(_ADV_TYPE_UUID32_COMPLETE, b)
elif len(b) == 16:
_append(_ADV_TYPE_UUID128_COMPLETE, b)
# See org.bluetooth.characteristic.gap.appearance.xml
_append(_ADV_TYPE_APPEARANCE, struct.pack('<h', appearance))