private void ConvertAttributesToCharacteristics(BlePeripheralService service)
{
#region Example attr table
// *=== Service: 42 48 12 4a 7f 2c 48 47 b9 de 04 a9 02 00 06 d5
// *====== Att: 26 - 00 28
// *====== Att: 27 - 03 28
// *====== Att: 28 - 42 48 12 4a 7f 2c 48 47 b9 de 04 a9 02 04 06 d5
// *====== Att: 29 - 02 29
// *====== Att: 30 - 03 28
// *====== Att: 31 - 42 48 12 4a 7f 2c 48 47 b9 de 04 a9 02 05 06 d5
// *====== Att: 32 - 02 29
#endregion
BlePeripheralCharacteristic current = null;
bool createCharacteristic = false;
foreach (BlePeripheralAttribute attr in service.Attributes)
{
if (attr.AttributeUUID.Equals(BlePeripheralAttribute.SERVICE_UUID))
{
// defines service - do nothing
}
else if (attr.AttributeUUID.Equals(BlePeripheralAttribute.CHARACTERISTIC_UUID))
{
// finish previous characteristic
current = null;
// crete characteristic from next attribute
createCharacteristic = true;
}
else if (attr.AttributeUUID.Equals(BlePeripheralAttribute.CHARACTERISTIC_CCC_UUID))
{
// add ccc capabilities to characteristic
current.SetCCCHandle(attr.Handle);
}
else
{
// if new characteristic begins - create it else skip and do nothing
if (createCharacteristic)
{
current = new BlePeripheralCharacteristic(attr.AttributeUUID, attr.Handle);
createCharacteristic = false;
service.Characteristics.Add(current);
}
}
}
}
private void FindAttributes(BlePeripheralService service)
{
byte[] findInfo = Ble.Lib.BLECommandATTClientFindInformation(this.Connection, service.StartHandle, service.EndHandle);
FindInformationFoundEventHandler infoHandler = (sender, e) => this.AttributeFound(service, e);
Ble.Lib.BLEEventATTClientFindInformationFound += infoHandler;
ProcedureCompletedEventArgs procedureResponse = null;
ProcedureCompletedEventHandler handler = (sender, e) => {
procedureResponse = e;
};
Ble.Lib.BLEEventATTClientProcedureCompleted += handler;
Ble.SendCommand(this.Port, findInfo);
this.WaitEvent(() => procedureResponse != null);
Ble.Lib.BLEEventATTClientFindInformationFound -= infoHandler;
Ble.Lib.BLEEventATTClientProcedureCompleted -= handler;
}
private void AttributeFound(BlePeripheralService service, FindInformationFoundEventArgs e)
{
service.Attributes.Add(new BlePeripheralAttribute(e.uuid, e.chrhandle));
}
