Swift nsinputstream not giving me the correct data from Trimble

I've developed this for the android and simply used a bufferedreader and

br.readline()

I should be getting data that looks like this:

$GPRMC,191830.00,A,4159.87613,N,09338.29258,W,0.065,303.4,270815,0.8,E,D*21

what I am getting is data that looks like this:

(WK#

The code in viewDidLoad()

if accessoryList.count > 0 {

var accessory = accessoryList[0] as! EAAccessory

accessory.delegate = self

println(accessoryList[0].description)

session = EASession(accessory: accessoryList[0] as! EAAccessory, forProtocol: "com.trimble.mcs.gnss")

if session != nil {

inputStream = session.inputStream

/

inputStream.delegate = self

inputStream.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)

inputStream.open()

}

}

and the stream code

func stream(aStream: NSStream, handleEvent eventCode: NSStreamEvent) {

let inStream = aStream as? NSInputStream

switch (eventCode){

case NSStreamEvent.OpenCompleted:

NSLog("Stream opened")

break

case NSStreamEvent.HasBytesAvailable:

/

let bufferSize = 8

var buffer = [UInt8](count: bufferSize, repeatedValue: 0)

while(session.inputStream!.hasBytesAvailable) {

let result :Int = session.inputStream!.read(&buffer, maxLength: bufferSize)

if(result > 0){

var output = NSString(bytes: &buffer, length: bufferSize, encoding: NSUTF8StringEncoding)

if(output != nil) {

print(output!)

}

}

}

println("")

break

case NSStreamEvent.ErrorOccurred:

NSLog("ErrorOccurred")

break

case NSStreamEvent.EndEncountered:

NSLog("EndEncountered")

break

default:

NSLog("unknown.")

}

}

Is there something I'm missing? I'm getting data, it's just not in english. I know that the encoding is UTF8. Any help would be appreciated!