public Device (CBPeripheral nativeDevice)
{
this._nativeDevice = nativeDevice;
this._nativeDevice.DiscoveredService += (object sender, NSErrorEventArgs e) => {
// why we have to do this check is beyond me. if a service has been discovered, the collection
// shouldn't be null, but sometimes it is. le sigh, apple.
if (this._nativeDevice.Services != null) {
foreach (CBService s in this._nativeDevice.Services)
{
if(!ServiceExists(s))
{
Console.WriteLine ("Device.Discovered Service: " + s.Description);
this._services.Add (new Service(s, this._nativeDevice));
}
}
this.ServicesDiscovered(this, new EventArgs());
}
};
#if __UNIFIED__
// fixed for Unified https://bugzilla.xamarin.com/show_bug.cgi?id=14893
this._nativeDevice.DiscoveredCharacteristic += (object sender, CBServiceEventArgs e) => {
#else
//BUGBUG/TODO: this event is misnamed in our SDK
this._nativeDevice.DiscoverCharacteristic += (object sender, CBServiceEventArgs e) => {
#endif
Console.WriteLine ("Device.Discovered Characteristics.");
//loop through each service, and update the characteristics
foreach (CBService srv in ((CBPeripheral)sender).Services) {
// if the service has characteristics yet
if(srv.Characteristics != null) {
// locate the our new service
foreach (var item in this.Services) {
// if we found the service
if (item.ID == Service.ServiceUuidToGuid(srv.UUID) ) {
item.Characteristics.Clear();
// add the discovered characteristics to the particular service
foreach (var characteristic in srv.Characteristics) {
Console.WriteLine("Device: Characteristic: " + characteristic.Description);
Characteristic newChar = new Characteristic(characteristic, _nativeDevice);
item.Characteristics.Add(newChar);
}
// inform the service that the characteristics have been discovered
// TODO: really, we should just be using a notifying collection.
(item as Service).OnCharacteristicsDiscovered();
}
}
}
}
};
}
public Task<ICharacteristic> ReadAsync()
{
var tcs = new TaskCompletionSource<ICharacteristic>();
if (!CanRead) {
throw new InvalidOperationException ("Characteristic does not support READ");
}
EventHandler<CBCharacteristicEventArgs> updated = null;
updated = (object sender, CBCharacteristicEventArgs e) => {
Console.WriteLine(".....UpdatedCharacterteristicValue: " + e.Characteristic.Value);
var c = new Characteristic(e.Characteristic, _parentDevice);
tcs.SetResult(c);
_parentDevice.UpdatedCharacterteristicValue -= updated;
};
_parentDevice.UpdatedCharacterteristicValue += updated;
//_parentDevice.UpdatedCharacterteristicValue += UpdatedRead;
Console.WriteLine(".....ReadAsync");
_parentDevice.ReadValue (_nativeCharacteristic);
return tcs.Task;
}
