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aioble/device: Add DeviceConnection.indicate_service_changed(). #467

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aioble/device: Add DeviceConnection.indicate_service_changed(). #467

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4 changes: 4 additions & 0 deletions micropython/bluetooth/aioble/aioble/device.py
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Original file line number Diff line number Diff line change
Expand Up @@ -274,6 +274,10 @@ async def exchange_mtu(self, mtu=None):
await self._mtu_event.wait()
return self.mtu

def indicate_service_changed(self, changed: List[Characteristic] = None):
from .server import indicate_service_changed
indicate_service_changed(self._conn_handle, changed)

# Wait for a connection on an L2CAP connection-oriented-channel.
async def l2cap_accept(self, psm, mtu, timeout_ms=None):
from .l2cap import accept
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14 changes: 14 additions & 0 deletions micropython/bluetooth/aioble/aioble/server.py
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Original file line number Diff line number Diff line change
Expand Up @@ -282,3 +282,17 @@ def register_services(*services):
for descriptor in characteristic.descriptors:
descriptor._register(service_handles[n])
n += 1


# Send indication on the service changed characteristic.
# Targets specific connection if provided, else sends to all connected and/or bonded devices.
# Flags specific changed characteristics if provided else all will be indicated.
def indicate_service_changed(conn_handle=None, changed: List[Characteristic] = None):
handle_start = 0x0000
handle_end = 0xFFFF
if changed:
print(_registered_characteristics)
handles = sorted([c._value_handle for c in changed])
handle_start = handles[0] - 1 # def handle is one less than value_handle
handle_end = handles[-1]
ble.gap_indicate_service_changed(conn_handle, handle_start, handle_end)