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Added class CharacteristicDeclaration, gatt_server getters

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* Converted CharacteristicDeclaration implementation to class
* Added ability to get a gatt_server attribute by service UUID, characteristics UUID, descriptor UUID
This commit is contained in:
Alan Rosenthal
2022-11-23 13:06:31 -05:00
committed by Alan Rosenthal
parent b437bd8619
commit b89f9030a0
3 changed files with 110 additions and 10 deletions
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17
bumble/gatt.py
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@@ -271,6 +271,23 @@ class Characteristic(Attribute):
return f'Characteristic(handle=0x{self.handle:04X}, end=0x{self.end_group_handle:04X}, uuid={self.uuid}, properties={Characteristic.properties_as_string(self.properties)})'
# -----------------------------------------------------------------------------
class CharacteristicDeclaration(Attribute):
'''
See Vol 3, Part G - 3.3.1 CHARACTERISTIC DECLARATION
'''
def __init__(self, characteristic, value_handle):
declaration_bytes = struct.pack(
'<BH',
characteristic.properties,
value_handle
) + characteristic.uuid.to_pdu_bytes()
super().__init__(GATT_CHARACTERISTIC_ATTRIBUTE_TYPE, Attribute.READABLE, declaration_bytes)
self.characteristic = characteristic
def __str__(self):
return f'CharacteristicDeclaration(handle=0x{self.handle:04X}, value_handle=0x{self.value_handle:04X}, uuid={self.uuid}, properties={Characteristic.properties_as_string(self.properties)})'
# -----------------------------------------------------------------------------
class CharacteristicValue:
'''