def barometer(connection, table):
ipcon = IPConnection()
b = Barometer(BAROMETER_UID, ipcon)
ipcon.connect(HOST, PORT)
value = b.get_air_pressure() / 1000.0 # Get current air pressure (unit is mbar/1000)
insert(connection, table, time.time(), value)
ipcon.disconnect()
class BrickletAirPressure:
_QUOTIENT = 1000.0
def __init__(self, uid, connection, logging_daemon, queue, value=0.0, trigger_difference=0.5):
self.bricklet = Barometer(uid, connection)
self._value = value
self._value_old = value
self.trigger_difference = trigger_difference
self._rising = False
self._falling = False
self.uid = uid
self._logging_daemon = logging_daemon
self._queue = queue
self._logging_daemon.info('Tinkerforge ... Barometer-Bricklet UID "%s" initialisiert' % uid)
def set_callback(self, timeframe=5000):
self.bricklet.set_air_pressure_callback_period(timeframe)
self.bricklet.register_callback(self.bricklet.CALLBACK_AIR_PRESSURE, self._changed)
self._logging_daemon.debug('Tinkerforge ... Barometer-Bricklet UID "%s" Callback gesetzt' % self.uid)
def read(self):
return self.bricklet.get_air_pressure() / self._QUOTIENT
def read_rising(self):
return self._rising
def read_falling(self):
return self._falling
def _changed(self, tmp_value):
tmp_value = (tmp_value / self._QUOTIENT)
if abs(self._value - tmp_value) >= self.trigger_difference:
if tmp_value > self._value_old:
self._rising = True
self._falling = False
elif tmp_value < self._value_old:
self._rising = False
self._falling = True
self._logging_daemon.debug(
'Tinkerforge ... Barometer-Bricklet UID "%s" , Neu = %f , Alt = %f , rising = %s , falling = %s' % (
self.uid, tmp_value, self._value_old, self._rising, self._falling))
self._value_old = tmp_value
self._value = tmp_value
tmp_json = json.dumps(["send_changed_data", self.uid, "sensor", "air_pressure", self._value])
for consumer in self._queue:
consumer(tmp_json)
self._logging_daemon.info(
'Tinkerforge ... Barometer-Bricklet UID "%s" , neuer Wert %f -> SocketServer Warteschlange ' % (
self.uid, self._value))
air_pressure = property(read)
rising = property(read_rising)
falling = property(read_falling)
def read_data(fake=None):
""" Reads data from all weather sensors and returns it as Dictionary.
In case of an error or outlier None is returned"""
if fake:
return weather_data
try:
ipcon = IPConnection()
temp_bricklet = Temperature('qnk', ipcon)
humidity_bricklet = Humidity('nLC', ipcon)
barometer_bricklet = Barometer('k5g', ipcon)
ipcon.connect(cfg['weather']['host'], int(cfg['weather']['port']))
temp_bricklet.set_i2c_mode(Temperature.I2C_MODE_SLOW)
temp = temp_bricklet.get_temperature() / 100.0
if 45 < temp < -30:
weather_data['temperature'] = None
logger.warn(
'Got temperature value of %s Grade which is out of range' %
temp)
else:
weather_data['temperature'] = temp
humidity = humidity_bricklet.get_humidity() / 10.0
if humidity < 5:
weather_data['humidity'] = None
logger.warn('Got humidity value of %s RH which is out of range' %
humidity)
else:
weather_data['humidity'] = humidity
pressure = barometer_bricklet.get_air_pressure() / 1000.0
if 1080 < pressure < 930:
weather_data['pressure'] = None
logger.warn('Got pressure value of %s mbar which is out of range' %
pressure)
else:
weather_data['pressure'] = pressure
ipcon.disconnect()
return weather_data
except Exception as e:
logger.error('Cloud not connect to weather sensors: %s' % str(e))
return
def get_airpressure(id):
cfg = configparser.ConfigParser()
cfg.read(cfg_filename) # open config file to read from
if cfg.has_section("Barometer") == True:
port = cfg.getint('Connection', 'Port') # get port entry from config file
host = cfg.get('Connection', 'Host') # get host entry from config file
uid = cfg.get('Barometer', 'bricklet_uid') # uid port entry from config file
ipcon = IPConnection() # Create IP connection
ipcon.connect(host, port) # Connect to brickd
b = Barometer(uid, ipcon) # Create device object
air_pressure = b.get_air_pressure()/1000.0 # Get current air pressure (unit is mbar/1000)
altitude = b.get_altitude()/100.0
db = sqlite3.connect(local_db) # build connection to local database
c = db.cursor() # create cursor
c.execute(wd_table) # create weatherdata table
c.execute('''INSERT INTO weatherdata(uid , value, keyword, date_id, device_name) VALUES(?,?,?,?,?)''', (uid,air_pressure,'air_pressure',id,'barometer',))
# insert the uid, device name the id from the date table an die humdity value into the weather table
c.execute('''INSERT INTO weatherdata(uid , value, keyword, date_id, device_name) VALUES(?,?,?,?,?)''', (uid,altitude,'altitude',id,'barometer',))
db.commit() # save creates and inserts permanent
ipcon.disconnect()
return({"air_pressure": air_pressure, "altitude": altitude})
def read_data():
try:
ipcon = IPConnection()
temp_bricklet = Temperature('qnk', ipcon)
humidity_bricklet = Humidity('nLC', ipcon)
barometer_bricklet = Barometer('k5g', ipcon)
ipcon.connect(cfg['weather']['host'], int(cfg['weather']['port']))
temp_bricklet.set_i2c_mode(Temperature.I2C_MODE_SLOW)
temp = temp_bricklet.get_temperature() / 100.0
if 45 < temp < -30:
weather_data['temperature'] = None
logger.warn('Got temperature value of %s Grade which is out of range' % temp)
else:
weather_data['temperature'] = temp
humidity = humidity_bricklet.get_humidity() / 10.0
if humidity < 5:
weather_data['humidity'] = None
logger.warn('Got humidity value of %s RH which is out of range' % humidity)
else:
weather_data['humidity'] = humidity
pressure = barometer_bricklet.get_air_pressure() / 1000.0
if 1090 < pressure < 920:
weather_data['pressure'] = None
logger.warn('Got pressure value of %s mbar which is out of range' % pressure)
else:
weather_data['pressure'] = pressure
ipcon.disconnect()
return weather_data
except Exception as e:
logger.error('Cloud not connect to weather sensors: %s' % str(e))
return
class BrickletAirPressure:
_QUOTIENT = 1000.0
def __init__(self,
uid,
connection,
logging_daemon,
queue,
value=0.0,
trigger_difference=0.5):
self.bricklet = Barometer(uid, connection)
self._value = value
self._value_old = value
self.trigger_difference = trigger_difference
self._rising = False
self._falling = False
self.uid = uid
self._logging_daemon = logging_daemon
self._queue = queue
self._logging_daemon.info(
'Tinkerforge ... Barometer-Bricklet UID "%s" initialisiert' % uid)
def set_callback(self, timeframe=5000):
self.bricklet.set_air_pressure_callback_period(timeframe)
self.bricklet.register_callback(self.bricklet.CALLBACK_AIR_PRESSURE,
self._changed)
self._logging_daemon.debug(
'Tinkerforge ... Barometer-Bricklet UID "%s" Callback gesetzt' %
self.uid)
def read(self):
return self.bricklet.get_air_pressure() / self._QUOTIENT
def read_rising(self):
return self._rising
def read_falling(self):
return self._falling
def _changed(self, tmp_value):
tmp_value = (tmp_value / self._QUOTIENT)
if abs(self._value - tmp_value) >= self.trigger_difference:
if tmp_value > self._value_old:
self._rising = True
self._falling = False
elif tmp_value < self._value_old:
self._rising = False
self._falling = True
self._logging_daemon.debug(
'Tinkerforge ... Barometer-Bricklet UID "%s" , Neu = %f , Alt = %f , rising = %s , falling = %s'
% (self.uid, tmp_value, self._value_old, self._rising,
self._falling))
self._value_old = tmp_value
self._value = tmp_value
tmp_json = json.dumps([
"send_changed_data", self.uid, "sensor", "air_pressure",
self._value
])
for consumer in self._queue:
consumer(tmp_json)
self._logging_daemon.info(
'Tinkerforge ... Barometer-Bricklet UID "%s" , neuer Wert %f -> SocketServer Warteschlange '
% (self.uid, self._value))
air_pressure = property(read)
rising = property(read_rising)
falling = property(read_falling)
#!/usr/bin/env python
# -*- coding: utf-8 -*-
HOST = "localhost"
PORT = 4223
UID = "bAc" # Change to your UID
from tinkerforge.ip_connection import IPConnection
from tinkerforge.bricklet_barometer import Barometer
if __name__ == "__main__":
ipcon = IPConnection() # Create IP connection
b = Barometer(UID, ipcon) # Create device object
ipcon.connect(HOST, PORT) # Connect to brickd
# Don't use device before ipcon is connected
# Get current air pressure (unit is mbar/1000)
air_pressure = b.get_air_pressure()/1000.0
print('Air Pressure: ' + str(air_pressure) + ' mbar')
# Get current altitude (unit is cm)
altitude = b.get_altitude()/100.0
print('Altitude: ' + str(altitude) + ' m')
raw_input('Press key to exit\n') # Use input() in Python 3
ipcon.disconnect()
##print('Stack Voltage: ' + str(voltage / 1000.0) + ' V')
##print('Stack Current: ' + str(current / 1000.0) + ' A')
t = Temperature(UID_TEMPERATURE) # Create temperature object
ipcon.add_device(t) # Add device to IP connection
# Don't use device before it is added to connection
# Get current temperature (unit is °C/ 100)
temperature = t.get_temperature() / 100.0
b = Barometer(UID_BAROMETER) # Create barometer object
ipcon.add_device(b) # Add device to IP connection
# Don't use device before it is added to the connection
# Get the current air pressure (unit is mbar/1000)
air_pressure = round(b.get_air_pressure()/1000.0, 1)
#print('Temperature: ' + str(temperature) + ' °C')
lcd = LCD20x4(UID_LCD) # Create LCD object
ipcon.add_device(lcd) # Add device to IP connection
# Don't use device before it is added to a connection
# Clear display
lcd.clear_display()
# Turn backlight on
lcd.backlight_on()
# Write on the LCD
lcd.write_line(0, 0, unicode_to_ks0066u('°C: ' + str(temperature)))
