speed can have value between 0x00 and 0xFF 
        heading can have value between 0 and 359

def roll(self, speed, heading, state=1):
        """
        speed can have value between 0x00 and 0xFF 
        heading can have value between 0 and 359 
        
        """
        return self.write(request.Roll(self.seq, speed, heading, state ))