Erel,
Thanks That helped ...
I see the complete error now,
Error writing value for characteristic: FFE1, error: Error Domain=CBATTErrorDomain Code=3
"Writing is not permitted." UserInfo={NSLocalizedDescription=Writing is not permitted.}
Just have to figure out what I need to do to make writing permitted with this device, I know other BLE programs I've tried can write to the TinySine.
is there a way to change the UserInfo ?
Again, thank you!