public Task <byte[]> WriteValue(string characteristicGuid, byte[] data, bool overrideExistingQueue = false)
{
var cbuuid = CBUUID.FromString(characteristicGuid);
// TODO: Check for connected devices?
if (_characteristics.ContainsKey(cbuuid) == false)
{
// TODO Error?
return(null);
}
byte[] dataCopy = null;
if (data != null)
{
dataCopy = new byte[data.Length];
Array.Copy(data, dataCopy, data.Length);
}
if (OWBoard.SerialWriteUUID.Equals(characteristicGuid, StringComparison.InvariantCultureIgnoreCase) == false &&
OWBoard.SerialReadUUID.Equals(characteristicGuid, StringComparison.InvariantCultureIgnoreCase) == false)
{
// If our system is little endian, reverse the array.
if (BitConverter.IsLittleEndian)
{
Array.Reverse(dataCopy);
}
}
var characteristic = _characteristics[cbuuid];
var nsData = NSData.FromArray(dataCopy);
var taskCompletionSource = new TaskCompletionSource <byte[]>();
CharacteristicValueRequest characteristicValueRequest = new CharacteristicValueRequest(cbuuid, taskCompletionSource, nsData);
if (overrideExistingQueue)
{
_writeQueue.RemoveAll(t => t.CharacteristicId.Equals(cbuuid));
}
_writeQueue.Add(characteristicValueRequest);
_peripheral.WriteValue(nsData, characteristic, CBCharacteristicWriteType.WithResponse);
return(taskCompletionSource.Task);
}
public Task <byte[]> WriteValue(string characteristicGuid, byte[] data, bool overrideExistingQueue = false)
{
Debug.WriteLine($"WriteValue: {characteristicGuid}");
if (_bluetoothGatt == null)
{
return(null);
}
if (data.Length > 20)
{
// TODO: Error, some Android BLE devices do not handle > 20byte packets well.
return(null);
}
var uuid = characteristicGuid.ToLower();
// TODO: Check for connected devices?
if (_characteristics.ContainsKey(uuid) == false)
{
// TODO Error?
return(null);
}
// TODO: Handle this.
/*
* if (_readQueue.ContainsKey(uuid))
* {
* return _readQueue[uuid].Task;
* }
*/
var taskCompletionSource = new TaskCompletionSource <byte[]>();
CharacteristicValueRequest characteristicValueRequest = new CharacteristicValueRequest(uuid, taskCompletionSource, data);
if (overrideExistingQueue)
{
_writeQueue.RemoveAll(t => t.CharacteristicId.Equals(uuid));
}
_writeQueue.Add(characteristicValueRequest);
byte[] dataBytes = null;
if (data != null)
{
dataBytes = new byte[data.Length];
Array.Copy(data, dataBytes, data.Length);
if (OWBoard.SerialWriteUUID.Equals(uuid, StringComparison.InvariantCultureIgnoreCase) == false &&
OWBoard.SerialReadUUID.Equals(uuid, StringComparison.InvariantCultureIgnoreCase) == false)
{
// If our system is little endian, reverse the array.
if (BitConverter.IsLittleEndian)
{
Array.Reverse(dataBytes);
}
}
}
_gattOperationQueue.Enqueue(new OWBLE_QueueItem(_characteristics[uuid], OWBLE_QueueItemOperationType.Write, dataBytes));
ProcessQueue();
return(taskCompletionSource.Task);
}
