Source code for platypush.backend.wiimote

"""
.. moduleauthor:: Fabio Manganiello <blacklight86@gmail.com>
"""

import re
import time

from platypush.backend import Backend
from platypush.message.event.wiimote import WiimoteEvent, \
    WiimoteConnectionEvent, WiimoteDisconnectionEvent


[docs]class WiimoteBackend(Backend): """ Backend to communicate with a Nintendo WiiMote controller Triggers: * :class:`platypush.message.event.Wiimote.WiimoteEvent` \ when the state of the Wiimote (battery, buttons, acceleration etc.) changes Requires: * **python3-wiimote** (follow instructions at https://github.com/azzra/python3-wiimote) """ _wiimote = None _inactivity_timeout = 300 _connection_attempts = 0 _last_btn_event_time = 0 _bdaddr = None
[docs] def __init__(self, bdaddr=_bdaddr, inactivity_timeout=_inactivity_timeout, *args, **kwargs): """ :param bdaddr: If set, connect to this specific Wiimote physical address (example: 00:11:22:33:44:55) :type bdaddr: str :param inactivity_timeout: Number of seconds elapsed from the last Wiimote action before disconnecting the device (default: 300 seconds) :type inactivity_timeout: float """ super().__init__(*args, **kwargs) self._bdaddr = bdaddr self._inactivity_timeout = inactivity_timeout
def get_wiimote(self): import cwiid if not self._wiimote: if self._bdaddr: self._wiimote = cwiid.Wiimote(bdaddr=self._bdaddr) else: self._wiimote = cwiid.Wiimote() self._wiimote.enable(cwiid.FLAG_MOTIONPLUS) self._wiimote.rpt_mode = cwiid.RPT_ACC | cwiid.RPT_BTN | cwiid.RPT_MOTIONPLUS self.logger.info('WiiMote connected') self._last_btn_event_time = time.time() self.bus.post(WiimoteConnectionEvent()) return self._wiimote def get_state(self): import cwiid wm = self.get_wiimote() state = wm.state parsed_state = {} # Get buttons all_btns = [attr for attr in dir(cwiid) if attr.startswith('BTN_')] parsed_state['buttons'] = { btn: True for btn in all_btns if state.get('buttons', 0) & getattr(cwiid, btn) != 0 } # Get LEDs all_leds = [attr for attr in dir(cwiid) if re.match('LED\d_ON', attr)] parsed_state['led'] = { led[:4]: True for led in all_leds if state.get('leds', 0) & getattr(cwiid, led) != 0 } # Get errors all_errs = [attr for attr in dir(cwiid) if attr.startswith('ERROR_')] parsed_state['error'] = { err: True for err in all_errs if state.get('errs', 0) & getattr(cwiid, err) != 0 } parsed_state['battery'] = round(state.get('battery', 0)/cwiid.BATTERY_MAX, 3) parsed_state['rumble'] = bool(state.get('rumble', 0)) if 'acc' in state: parsed_state['acc'] = tuple(int(acc/5)*5 for acc in state['acc']) if 'motionplus' in state: parsed_state['motionplus'] = { 'angle_rate': tuple(int(angle/100) for angle in state['motionplus']['angle_rate']), 'low_speed': state['motionplus']['low_speed'], } return parsed_state def close(self): if not self._wiimote: return try: self._wiimote.close() except Exception as e: self.logger.warning('Could not close Wiimote connection: {}'.format(str(e))) self._wiimote = None self.bus.post(WiimoteDisconnectionEvent())
[docs] def run(self): super().run() self._connection_attempts = 0 last_state = {} self.logger.info('Initialized Wiimote backend') while not self.should_stop(): try: state = self.get_state() changed_state = { k: state[k] for k in state.keys() if state[k] != last_state.get(k) } if changed_state: self.bus.post(WiimoteEvent(**changed_state)) if 'buttons' in changed_state: self._last_btn_event_time = time.time() elif last_state and time.time() - \ self._last_btn_event_time >= self._inactivity_timeout: self.logger.info('Wiimote disconnected upon timeout') self.close() last_state = state time.sleep(0.1) except RuntimeError as e: if type(e) == RuntimeError and str(e) == 'Error opening wiimote connection': if self._connection_attempts == 0: self.logger.info('Press 1+2 to pair your WiiMote controller') else: self.logger.exception(e) self.close() self._connection_attempts += 1
# vim:sw=4:ts=4:et: