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Migrated arduino integration to the new SensorPlugin API.

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This commit is contained in:
Fabio Manganiello 2023-04-02 23:06:06 +02:00
parent cf16076bce
commit d5ddc0c65e
Signed by untrusted user: blacklight
GPG key ID: D90FBA7F76362774
5 changed files with 282 additions and 179 deletions
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3
platypush/backend/http/webapp/src/assets/icons.json
View file

@ -1,4 +1,7 @@
{
"arduino": {
"class": "fas fa-microchip"
},
"bluetooth": {
"class": "fab fa-bluetooth"
},

26
platypush/backend/sensor/arduino/__init__.py
View file

@ -1,26 +0,0 @@
from platypush.backend.sensor import SensorBackend
class SensorArduinoBackend(SensorBackend):
"""
This backend listens for new events from an Arduino with a Firmata-compatible firmware.
Requires:
* The :class:`platypush.plugins.arduino.ArduinoPlugin` plugin configured.
Triggers:
* :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
* :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
gone above a configured threshold
* :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
gone below a configured threshold
"""
def __init__(self, **kwargs):
super().__init__(plugin='arduino', **kwargs)
# vim:sw=4:ts=4:et:

12
platypush/backend/sensor/arduino/manifest.yaml
View file

@ -1,12 +0,0 @@
manifest:
events:
platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
of a sensor havegone above a configured threshold
platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
of a sensor havegone below a configured threshold
platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
sensor have changed
install:
pip: []
package: platypush.backend.sensor.arduino
type: backend

295
platypush/plugins/arduino/__init__.py
View file

@ -1,26 +1,49 @@
import enum
import time
from typing import Optional, Dict, Union, Callable, Tuple, Type
from typing import List, Optional, Dict, Union, Callable, Tuple, Type
from typing_extensions import override
from pyfirmata2 import Arduino, ArduinoMega, ArduinoDue, ArduinoNano, Pin, util, ANALOG, INPUT, PWM
from pyfirmata2 import (
Arduino,
ArduinoMega,
ArduinoDue,
ArduinoNano,
Board,
Pin,
util,
ANALOG,
INPUT,
PWM,
)
from platypush.common.sensors import Numeric
from platypush.entities.devices import Device
from platypush.entities.sensors import NumericSensor
from platypush.plugins import action
from platypush.plugins.sensor import SensorPlugin
class PinType(enum.IntEnum):
"""
PIN type enumeration (analog or digital).
"""
ANALOG = 1
DIGITAL = 2
class BoardType(enum.Enum):
"""
Board types.
"""
MEGA = 'mega'
DUE = 'due'
NANO = 'nano'
# noinspection PyBroadException
# pylint: disable=too-many-ancestors
class ArduinoPlugin(SensorPlugin):
"""
Interact with an Arduino connected to the host machine over USB using the
@ -41,23 +64,32 @@ class ArduinoPlugin(SensorPlugin):
* **pyfirmata2** (``pip install pyfirmata2``)
Triggers:
* :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent`
* :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent`
* :class:`platypush.message.event.sensor.SensorDataChangeEvent`
"""
def __init__(self,
def __init__(
self,
board: Optional[str] = None,
board_type: Optional[str] = None,
baud_rate: int = 57600,
baud_rate: int = 9600,
analog_pins: Optional[Dict[str, int]] = None,
digital_pins: Optional[Dict[str, int]] = None,
timeout: float = 20.0,
conv_functions: Optional[Dict[Union[str, int], Union[str, Callable]]] = None,
**kwargs):
poll_interval: float = 1.0,
**kwargs,
):
"""
:param board: Default board name or path (e.g. ``COM3`` on Windows or ``/dev/ttyUSB0`` on Unix). If not set
then the plugin will attempt an auto-discovery.
:param board_type: Default board type. It can be 'mega', 'due' or 'nano'. Leave empty for auto-detection.
:param baud_rate: Default serial baud rate (default: 57600)
:param baud_rate: Default serial baud rate (default: 9600)
:param analog_pins: Optional analog PINs map name->pin_number.
:param digital_pins: Optional digital PINs map name->pin_number.
:param timeout: Board communication timeout in seconds.
@ -77,7 +109,7 @@ class ArduinoPlugin(SensorPlugin):
temperature: 'lambda t: t * 500.0'
"""
super().__init__(**kwargs)
super().__init__(poll_interval=poll_interval, **kwargs)
self.board = board
self.board_type = self._get_board_type(board_type)
@ -90,20 +122,28 @@ class ArduinoPlugin(SensorPlugin):
}
self._pin_name_by_number = {
PinType.ANALOG: {number: name for name, number in self._pin_number_by_name[PinType.ANALOG].items()},
PinType.DIGITAL: {number: name for name, number in self._pin_number_by_name[PinType.DIGITAL].items()},
PinType.ANALOG: {
number: name
for name, number in self._pin_number_by_name[PinType.ANALOG].items()
},
PinType.DIGITAL: {
number: name
for name, number in self._pin_number_by_name[PinType.DIGITAL].items()
},
}
self.conv_functions: Dict[Union[str, int], Callable] = {
(self._pin_number_by_name[PinType.ANALOG].get(pin, pin)): (f if callable(f) else eval(f))
(self._pin_number_by_name[PinType.ANALOG].get(str(pin), pin)): (
f if callable(f) else eval(f)
)
for pin, f in (conv_functions or {}).items()
}
self._boards = {}
self._board_iterators = {}
self._boards: Dict[str, Board] = {}
self._board_iterators: Dict[str, util.Iterator] = {}
@staticmethod
def _get_board_type(board_type: Optional[str] = None) -> Type:
def _get_board_type(board_type: Optional[str] = None) -> Type[Board]:
if not board_type:
return Arduino
@ -115,13 +155,15 @@ class ArduinoPlugin(SensorPlugin):
if board_type == BoardType.MEGA.value:
return ArduinoMega
raise AssertionError('Invalid board_type: {}'.format(board_type))
raise AssertionError(f'Invalid board_type: {board_type}')
def _get_board(self,
def _get_board(
self,
board: Optional[str] = None,
board_type: Optional[str] = None,
baud_rate: Optional[int] = None,
timeout: Optional[float] = None):
timeout: Optional[float] = None,
) -> Board:
board_name = board or self.board or Arduino.AUTODETECT
baud_rate = baud_rate or self.baud_rate
timeout = timeout or self.timeout
@ -129,48 +171,58 @@ class ArduinoPlugin(SensorPlugin):
if board_name in self._boards:
return self._boards[board_name]
board_type = self._get_board_type(board_type) if board_type else self.board_type
board = board_type(board_name, baudrate=baud_rate, timeout=timeout)
self.logger.info('Connected to board {}'.format(board.name))
self._boards[board_name] = board
board_obj_type = (
self._get_board_type(board_type) if board_type else self.board_type
)
assert board_obj_type
self._board_iterators[board.name] = util.Iterator(board)
self._board_iterators[board.name].start()
return board
board_obj = board_obj_type(board_name, baudrate=baud_rate, timeout=timeout)
board_name = board_obj.name or ''
self.logger.info('Connected to board %s', board_name)
self._boards[board_name] = board_obj
self._board_iterators[board_name] = util.Iterator(board_obj)
self._board_iterators[board_name].start()
return board_obj
def _get_board_and_pin(self,
def _get_board_and_pin(
self,
pin: Union[int, str],
pin_type: PinType,
board: Optional[str] = None,
board_type: Optional[str] = None,
baud_rate: Optional[int] = None,
timeout: Optional[int] = None) -> Tuple[Arduino, int]:
board = self._get_board(board, board_type=board_type, baud_rate=baud_rate, timeout=timeout)
timeout: Optional[int] = None,
) -> Tuple[Board, int]:
board_ = self._get_board(
board, board_type=board_type, baud_rate=baud_rate, timeout=timeout
)
if pin in self._pin_number_by_name[pin_type]:
pin = self._pin_number_by_name[pin_type][pin]
pin = self._pin_number_by_name[pin_type][str(pin)]
assert isinstance(pin, int), 'Invalid PIN number/name: {}'.format(pin)
return board, pin
assert isinstance(pin, int), f'Invalid PIN number/name: {pin}'
return board_, pin
@staticmethod
def _get_pin(pin: int, board: Arduino, pin_type: PinType) -> Pin:
def _get_pin(pin: int, board: Board, pin_type: PinType) -> Pin:
pins = None
if pin_type == PinType.ANALOG:
pins = board.analog
if pin_type == PinType.DIGITAL:
pins = board.digital
assert pins, 'Invalid pin_type: {}'.format(pin_type)
assert pins, f'Invalid pin_type: {pin_type}'
if pins[pin].mode in [ANALOG, INPUT]:
pins[pin].enable_reporting()
return pins[pin]
def _poll_value(self,
def _poll_value(
self,
pin: int,
board: Arduino,
board: Board,
pin_type: PinType,
timeout: Optional[float] = None) -> Optional[Union[bool, float]]:
timeout: Optional[float] = None,
) -> Optional[Union[bool, float]]:
value = None
poll_start = time.time()
@ -180,8 +232,10 @@ class ArduinoPlugin(SensorPlugin):
pin_ = self._get_pin(pin=pin, board=board, pin_type=pin_type)
if pin_.mode not in [INPUT, ANALOG]:
self.logger.warning('PIN {} is not configured in input/analog mode'.format(pin))
return
self.logger.warning(
'PIN %d is not configured in input/analog mode', pin
)
return None
value = pin_.read()
if value is None:
@ -193,13 +247,15 @@ class ArduinoPlugin(SensorPlugin):
return value
@action
def analog_read(self,
def analog_read(
self,
pin: Union[int, str],
board: Optional[str] = None,
board_type: Optional[str] = None,
baud_rate: Optional[int] = None,
conv_function: Optional[Union[str, Callable]] = None,
timeout: Optional[int] = None) -> float:
timeout: Optional[int] = None,
) -> Optional[float]:
"""
Read an analog value from a PIN.
@ -212,28 +268,44 @@ class ArduinoPlugin(SensorPlugin):
returns by default float values in the range ``[0.0, 1.0]``.
:param timeout: Communication timeout in seconds (default: default configured ``timeout``).
"""
conv_function = conv_function or self.conv_functions.get(pin)
board, pin = self._get_board_and_pin(pin=pin,
board_, pin = self._get_board_and_pin(
pin=pin,
pin_type=PinType.ANALOG,
board=board,
board_type=board_type,
baud_rate=baud_rate,
timeout=timeout)
timeout=timeout,
)
conv_function = conv_function or self.conv_functions.get(pin)
value = self._poll_value(pin=pin, board=board, pin_type=PinType.ANALOG, timeout=timeout)
converter: Optional[Callable[[float], float]] = None
if isinstance(conv_function, str):
converter = eval(conv_function)
elif callable(conv_function):
converter = conv_function
elif conv_function is not None:
raise AssertionError(
'Expected conv_function to be null, a string or a function, '
f'got "{conv_function}" instead'
)
if conv_function:
value = conv_function(value)
value = self._poll_value(
pin=pin, board=board_, pin_type=PinType.ANALOG, timeout=timeout
)
if converter and value is not None:
value = converter(value)
return value
@action
def digital_read(self,
def digital_read(
self,
pin: Union[int, str],
board: Optional[str] = None,
board_type: Optional[str] = None,
baud_rate: Optional[int] = None,
timeout: Optional[int] = None) -> bool:
timeout: Optional[int] = None,
) -> bool:
"""
Read a digital value from a PIN.
@ -243,22 +315,31 @@ class ArduinoPlugin(SensorPlugin):
:param baud_rate: Baud rate (default: default configured ``baud_rate``).
:param timeout: Communication timeout in seconds (default: default configured ``timeout``).
"""
board, pin = self._get_board_and_pin(pin=pin,
board_, pin = self._get_board_and_pin(
pin=pin,
pin_type=PinType.DIGITAL,
board=board,
board_type=board_type,
baud_rate=baud_rate,
timeout=timeout)
timeout=timeout,
)
return self._poll_value(pin=pin, board=board, pin_type=PinType.DIGITAL, timeout=timeout)
return bool(
self._poll_value(
pin=pin, board=board_, pin_type=PinType.DIGITAL, timeout=timeout
)
)
@action
def analog_write(self, pin: Union[int, str],
def analog_write(
self,
pin: Union[int, str],
value: float,
board: Optional[str] = None,
board_type: Optional[str] = None,
baud_rate: Optional[int] = None,
timeout: Optional[int] = None):
timeout: Optional[int] = None,
):
"""
Write a value to an analog PIN.
@ -269,21 +350,26 @@ class ArduinoPlugin(SensorPlugin):
:param baud_rate: Baud rate (default: default configured ``baud_rate``).
:param timeout: Communication timeout in seconds (default: default configured ``timeout``).
"""
board, pin = self._get_board_and_pin(pin=pin,
board_, pin = self._get_board_and_pin(
pin=pin,
pin_type=PinType.ANALOG,
board=board,
board_type=board_type,
baud_rate=baud_rate,
timeout=timeout)
board.analog[pin].write(value)
timeout=timeout,
)
board_.analog[pin].write(value)
@action
def digital_write(self, pin: Union[int, str],
def digital_write(
self,
pin: Union[int, str],
value: bool,
board: Optional[str] = None,
board_type: Optional[str] = None,
baud_rate: Optional[int] = None,
timeout: Optional[int] = None):
timeout: Optional[int] = None,
):
"""
Write a value to a digital PIN.
@ -294,21 +380,26 @@ class ArduinoPlugin(SensorPlugin):
:param baud_rate: Baud rate (default: default configured ``baud_rate``).
:param timeout: Communication timeout in seconds (default: default configured ``timeout``).
"""
board, pin = self._get_board_and_pin(pin=pin,
board_, pin = self._get_board_and_pin(
pin=pin,
pin_type=PinType.DIGITAL,
board=board,
board_type=board_type,
baud_rate=baud_rate,
timeout=timeout)
board.digital[pin].write(value)
timeout=timeout,
)
board_.digital[pin].write(value)
@action
def pwm_write(self, pin: Union[int, str],
def pwm_write(
self,
pin: Union[int, str],
value: float,
board: Optional[str] = None,
board_type: Optional[str] = None,
baud_rate: Optional[int] = None,
timeout: Optional[int] = None):
timeout: Optional[int] = None,
):
"""
Write a PWM value to a digital PIN.
@ -319,26 +410,32 @@ class ArduinoPlugin(SensorPlugin):
:param baud_rate: Baud rate (default: default configured ``baud_rate``).
:param timeout: Communication timeout in seconds (default: default configured ``timeout``).
"""
board, pin = self._get_board_and_pin(pin=pin,
board_, pin = self._get_board_and_pin(
pin=pin,
pin_type=PinType.DIGITAL,
board=board,
board_type=board_type,
baud_rate=baud_rate,
timeout=timeout)
timeout=timeout,
)
assert board.digital[pin].PWM_CAPABLE, 'PIN {} is not PWM capable'.format(pin)
if board.digital[pin] != PWM:
board.digital[pin].mode = PWM
time.sleep(0.001)
assert board_.digital[pin].PWM_CAPABLE, f'PIN {pin} is not PWM capable'
if board_.digital[pin] != PWM:
board_.digital[pin].mode = PWM
time.sleep(0.001) # 1 μs spike to activate a PWM pin
board.digital[pin].write(value)
board_.digital[pin].write(value)
@action
def get_measurement(self,
def get_measurement(
self,
*_,
board: Optional[str] = None,
board_type: Optional[str] = None,
baud_rate: Optional[int] = None,
timeout: Optional[int] = None) -> Dict[str, float]:
timeout: Optional[int] = None,
**__,
) -> Dict[str, Optional[Union[float, bool]]]:
"""
Get a measurement from all the configured PINs.
@ -352,21 +449,35 @@ class ArduinoPlugin(SensorPlugin):
transformed through the configured ``conv_functions``.
"""
ret = {}
board = self._get_board(board=board, board_type=board_type, baud_rate=baud_rate, timeout=timeout)
board_ = self._get_board(
board=board, board_type=board_type, baud_rate=baud_rate, timeout=timeout
)
for pin in board.analog:
if self._pin_name_by_number[PinType.ANALOG] and \
pin.pin_number not in self._pin_name_by_number[PinType.ANALOG]:
assert board_, f'No such board: board={board}, board_type={board_type}'
for pin in board_.analog:
if (
self._pin_name_by_number[PinType.ANALOG]
and pin.pin_number not in self._pin_name_by_number[PinType.ANALOG]
):
continue
name = self._pin_name_by_number[PinType.ANALOG].get(pin.pin_number, 'A{}'.format(pin.pin_number))
value = self._poll_value(pin=pin.pin_number, board=board, pin_type=PinType.ANALOG,
timeout=timeout or self.timeout)
name = self._pin_name_by_number[PinType.ANALOG].get(
pin.pin_number, f'A{pin.pin_number}'
)
value = self._poll_value(
pin=pin.pin_number,
board=board_,
pin_type=PinType.ANALOG,
timeout=timeout or self.timeout,
)
if value is None:
continue
conv_function = self.conv_functions.get(name, self.conv_functions.get(pin.pin_number))
conv_function = self.conv_functions.get(
name, self.conv_functions.get(pin.pin_number)
)
if conv_function:
value = conv_function(value)
@ -374,8 +485,32 @@ class ArduinoPlugin(SensorPlugin):
return ret
@override
def transform_entities(self, entities: Dict[str, Numeric]) -> List[Device]: # type: ignore
dev_id = 'arduino'
dev_name = 'Arduino'
if self.board:
dev_id += f':{self.board}'
dev_name += f' @ {self.board}'
return [
Device(
id=dev_id,
name=dev_name,
children=[
NumericSensor(
id=f'{dev_id}:{key}',
name=key,
value=value,
)
for key, value in entities.items()
],
)
]
@action
def close(self):
def stop(self):
super().stop()
for it in self._board_iterators.values():
it.stop()

5
platypush/plugins/arduino/manifest.yaml
View file

@ -1,5 +1,8 @@
manifest:
events: {}
events:
platypush.message.event.sensor.SensorDataAboveThresholdEvent:
platypush.message.event.sensor.SensorDataBelowThresholdEvent:
platypush.message.event.sensor.SensorDataChangeEvent:
install:
pip:
- pyfirmata2