homeauto: service/piNode/devices.py comparison

comparison service/piNode/devices.py @ 407:864c8911ae73

PCA9685 pwm board support on piNode Ignore-this: ce0cf862ebcf7acff271a5ad327e9763

author	drewp@bigasterisk.com
date	Tue, 12 Mar 2019 00:13:03 -0700
parents	38a74c43639c
children	f397ec8bd13d

comparison

equal deleted inserted replaced

-:7a0cb00d5032
+:864c8911ae73
 return deviceType
 @register
 class MotionSensorInput(DeviceType):
 """
+Triggering all the time? Try 5V VCC, per https://electronics.stackexchange.com/a/416295
 0          30s          60s         90s                    10min
 |           |           |           |          ...          |
 Sensor input    ******** ** ******* ****
 :sees output    ........ .. ....... ....
 :seesRecently   .............................................................
 }]
 @register
 class TempHumidSensor(DeviceType):
+"""
+AM2302/DHT22 pinout is vcc-data-nc-gnd. VCC to 3.3V. Add 10k pullup on data.
+"""
 deviceType = ROOM['TempHumidSensor']
 pollPeriod = 5
 def __init__(self, *a, **kw):
 DeviceType.__init__(self, *a, **kw)
 def __init__(self,  *a, **kw):
 DeviceType.__init__(self, *a, **kw)
 import w1thermsensor
 log.info("scan for w1 devices")
 self.SensorNotReadyError = w1thermsensor.core.SensorNotReadyError
+self.ResetValueError = w1thermsensor.core.ResetValueError
 self._sensors = w1thermsensor.W1ThermSensor.get_available_sensors()
 for s in self._sensors:
 # Something looks different about these ids
 # ('000003a5a94c') vs the ones I get from arduino
 # ('2813bea50300003d'). Not sure if I'm parsing them
 try:
 tempF = sensor.get_temperature(sensor.DEGREES_F)
 stmts.append((sensor.uri, ROOM['temperatureF'],
 # see round() note in arduinoNode/devices.py
 Literal(round(tempF, 2))))
-except self.SensorNotReadyError as e:
+except (self.SensorNotReadyError, self.ResetValueError) as e:
 log.warning(e)
 return stmts
 except Exception as e:
 log.error(e)
 'element': 'output-rgb',
 'subj': self.uri,
 'pred': ROOM['color'],
 }]
+@register
+class PwmBoard(DeviceType):
+"""
+need this in /boot/config.txt
+dtparam=i2c_arm=on
+check for devices with
+apt-get install -y i2c-tools
+sudo i2cdetect -y 1
+gpio8 = bcm2 = sda1
+gpio9 = bcm3 = scl1
+They're next to the 3v3 pin.
+"""
+deviceType = ROOM['PwmBoard']
+@classmethod
+def findInstances(cls, graph, board, pi):
+for row in graph.query("""SELECT DISTINCT ?dev WHERE {
+?board :hasI2cBus ?bus .
+?bus :connectedTo ?dev .
+?dev a :PwmBoard .
+}""", initBindings=dict(board=board), initNs={'': ROOM}):
+outs = {}
+for out in graph.query("""SELECT DISTINCT ?area ?chan WHERE {
+?dev :output [:area ?area; :channel ?chan] .
+}""", initBindings=dict(dev=row.dev), initNs={'': ROOM}):
+outs[out.area] = out.chan.toPython()
+yield cls(graph, row.dev, pi, outs)
+def __init__(self, graph, dev, pi, outs):
+super(PwmBoard, self).__init__(graph, dev, pi, pinNumber=None)
+import PCA9685
+self.pwm = PCA9685.PWM(pi, bus=1, address=0x40)
+self.pwm.set_frequency(1200)
+self.outs = outs
+self.values = {uri: 0 for uri in self.outs.keys()} # uri: brightness
+def hostStatements(self):
+return [(uri, ROOM['brightness'], Literal(b))
+for uri, b in self.values.items()]
+def outputPatterns(self):
+return [(area, ROOM['brightness'], None) for area in self.outs]
+def sendOutput(self, statements):
+assert len(statements) == 1
+assert statements[0][1] == ROOM['brightness'];
+chan = self.outs[statements[0][0]]
+value = float(statements[0][2])
+self.values[statements[0][0]] = value
+self.pwm.set_duty_cycle(chan, value * 100)
+def outputWidgets(self):
+return [{
+'element': 'output-slider',
+'min': 0,
+'max': 1,
+'step': 1 / 255,
+'subj': area,
+'pred': ROOM['brightness'],
+} for area in self.outs]
 def makeDevices(graph, board, pi):
 out = []
 for dt in sorted(_knownTypes, key=lambda cls: cls.__name__):

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comparison service/piNode/devices.py @ 407:864c8911ae73