def connection(self):
"""
Lazy initialization of the connection object
"""
if self._connection:
return self._connection
elif self.address:
adapter = pygatt.backends.GATTToolBackend()
adapter.start(False)
self._connection = adapter.connect(self.address, address_type='random')
self.sense = MorseSense(self._connection, self.sensor_state)
self.sense.start()
return self._connection
else:
return None
class MorseRobot(GenericRobot):
"""
Controller of WonderWorkshop's Dot / Dash robots.
"""
def __init__(self, address=None):
super(MorseRobot, self).__init__()
self.sensor_state = defaultdict(int)
self.state = self.sensor_state
self.address = address
self.sense = None
self._connection = None
@property
def connection(self):
"""
Lazy initialization of the connection object
"""
if self._connection:
return self._connection
elif self.address:
adapter = pygatt.backends.GATTToolBackend()
adapter.start(False)
self._connection = adapter.connect(self.address, address_type='random')
self.sense = MorseSense(self._connection, self.sensor_state)
self.sense.start()
return self._connection
else:
return None
def connect(self):
return self.connection
def command(self, command_name, command_values):
"""
Send a command to robot
:param command_name: command name, morseapi.COMMANDS
:param command_values: bytearray with command parameters
"""
message = bytearray([COMMANDS[command_name]]) + command_values
logging.debug(binascii.hexlify(message))
if self.connection:
self.connection.char_write_handle(HANDLES["command"], message)
def reset(self, mode=4):
"""
Reset robot
:param mode: Reset mode
Available modes:
1 some kind of debug/reflash mode?
3 reboot
4 zero out leds/head
"""
self.command("reset", bytearray([mode]))
def eye(self, value):
"""
Turn on and off the Iris LEDs. There are 12 of them. Top one is the
first and they are incremeted clockwise.
Light bottom LED
>>> bot.eye(1<<6)
Light alternate LEDs
>>> bot.eye(0b1010101010101)
light all LEDs
>>> bot.eye(8191)
:param value: bitmask to which light to light up 0-8191
"""
self.command("eye", two_byte_array(value))
def eye_brightness(self, value):
"""
Set brightness of the eye backlight.
:param value: Brightness value 0-255
"""
self.command("eye_brightness", one_byte_array(value))
def neck_color(self, color):
"""
Set color Neck light on Dash, and Eye backlight on Dot.
:param color: 6-digit (e.g. #fa3b2c), 3-digit (e.g. #fbb),
fully spelled color (e.g. white)
"""
self.command("neck_color", color_byte_array(color))
def left_ear_color(self, color):
"""
Set color of left ear.
:param color: 6-digit (e.g. #fa3b2c), 3-digit (e.g. #fbb),
fully spelled color (e.g. white)
"""
self.command("left_ear_color", color_byte_array(color))
def right_ear_color(self, color):
"""
Set color of right ear.
:param color: 6-digit (e.g. #fa3b2c), 3-digit (e.g. #fbb),
fully spelled color (e.g. white)
"""
self.command("right_ear_color", color_byte_array(color))
def ear_color(self, color):
"""
Set color of both ears.
:param color: 6-digit (e.g. #fa3b2c), 3-digit (e.g. #fbb),
fully spelled color (e.g. white)
"""
self.left_ear_color(color)
self.right_ear_color(color)
def head_color(self, color):
"""
Set color of top LED.
:param color: 6-digit (e.g. #fa3b2c), 3-digit (e.g. #fbb),
fully spelled color (e.g. white)
"""
self.command("head_color", color_byte_array(color))
def say(self, sound_name):
"""
Play a sound from sound bank file
:param sound_name: Name of sound to play
List available noies
>>> from morseapi import NOISES
>>> NOISES.keys()
"""
self.command("say", bytearray(NOISES[sound_name]))
# All the subsequent commands are Dash specific
def tail_color(self, color):
raise NotImplementedError("Changing tail light color is not yet supported")
def head_yaw(self, angle):
"""
Turn Dash's head left or right
:param angle: distance to turn in degrees from -53 to 53
"""
angle = max(-53, angle)
angle = min(53, angle)
self.command("head_yaw", angle_array(angle))
def head_pitch(self, angle):
"""
Tilt Dash's head up or down.
:param angle: distance to turn from -5 to 10
"""
angle = max(-5, angle)
angle = min(10, angle)
self.command("head_pitch", angle_array(angle))
def stop(self):
"""
Stop moving Dash.
"""
self.command("drive", bytearray([0, 0, 0]))
def drive(self, speed):
"""
Start moving Dash forward or backward.
Dash will continue moving until another drive(), spin() or stop()
command is issued.
:param speed: Speed at which to move, 200 is a resonable value.
Negative speed drives Dash backwards.
"""
speed = max(-2048, speed)
speed = min(2048, speed)
if speed < 0:
speed = 0x800 + speed
self.command("drive", bytearray([
speed & 0xff,
0x00,
(speed & 0x0f00) >> 8
]))
def spin(self, speed):
"""
Start spinning Dash left or right.
Dash will continue spinning until another drive(), spin() or stop()
command is issued.
:param speed: Speed at which to spin, 200 is a reasonable value.
Positive values spin clockwise and negative counter-clockwise.
"""
speed = max(-2048, speed)
speed = min(2048, speed)
if speed < 0:
speed = 0x800 + speed
self.command("drive", bytearray([
0x00,
speed & 0xff,
(speed & 0xff00) >> 5
]))
def turn(self, degrees, speed_dps=(360/2.094)):
"""
Turn Dash specified distance.
This is a blocking call.
:param degrees: How many degrees to turn.
Positive values spin clockwise and negative counter-clockwise.
:param speed: Speed to turn at, in degrees/second
"""
if abs(degrees) > 360:
raise NotImplementedError("Cannot turn more than one rotation per move")
if degrees:
seconds = abs(degrees/speed_dps)
byte_array = self._get_move_byte_array(degrees=degrees, seconds=seconds)
self.command("move", byte_array)
logging.debug("turn sleeping {0} @ {1}".format(seconds, time.time()))
logging.debug(binascii.hexlify(byte_array))
# self.sleep does not work and api says not to use time.sleep...
time.sleep(seconds)
logging.debug("turn finished sleeping {0} @ {1}".format(seconds, time.time()))
def move(self, distance_mm, speed_mmps=1000, no_turn=True):
"""
Move specified distance at a particular speed.
This is a blocking call.
:param distance_mm: How far to move in mm. Negative values to go backwards
:param speed_mmps: Speed at which to move in mm/s.
"""
speed_mmps = abs(speed_mmps)
seconds = abs(distance_mm / speed_mmps)
if no_turn and distance_mm < 0:
byte_array = MorseRobot._get_move_byte_array(
distance_mm=distance_mm,
seconds=seconds,
eight_byte=0x81,
)
else:
byte_array = MorseRobot._get_move_byte_array(
distance_mm=distance_mm,
seconds=seconds,
)
self.command("move", byte_array)
logging.debug("move sleeping {0} @ {1}".format(seconds, time.time()))
logging.debug(binascii.hexlify(byte_array))
# self.sleep does not work and api says not to use time.sleep...
time.sleep(seconds)
logging.debug("move finished sleeping {0} @ {1}".format(seconds, time.time()))
@staticmethod
def _get_move_byte_array(distance_mm=0, degrees=0, seconds=1.0, eight_byte=0x80):
# Sixth byte is mixed use
# * turning
# * high nibble is turn distance high byte<<2
# * low nibble is 0
# * driving straight
# * whole byte is high byte of drive distance
# unclear if these can be combined
# Eight byte is weird.
# * On subsequent move commands its usually 0x40
# * On first command its usually 0x80, but not required
# * When driving backwards without turning around last bit is 1
if distance_mm and degrees:
raise NotImplementedError("Cannot turn and move concurrently")
sixth_byte = 0
seventh_byte = 0
distance_low_byte = distance_mm & 0x00ff
distance_high_byte = (distance_mm & 0x3f00) >> 8
sixth_byte |= distance_high_byte
centiradians = int(math.radians(degrees) * 100.0)
turn_low_byte = centiradians & 0x00ff
turn_high_byte = (centiradians & 0x0300) >> 2
sixth_byte |= turn_high_byte
if centiradians < 0:
seventh_byte = 0xc0
time_measure = int(seconds * 1000.0)
time_low_byte = time_measure & 0x00ff
time_high_byte = (time_measure & 0xff00) >> 8
return bytearray([
distance_low_byte,
0x00, # unknown
turn_low_byte,
time_high_byte,
time_low_byte,
sixth_byte,
seventh_byte,
eight_byte,
])