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()
def cb_enumerate(self, uid, connected_uid, position, hardware_version,
firmware_version, device_identifier, enumeration_type):
if enumeration_type == IPConnection.ENUMERATION_TYPE_CONNECTED or \
enumeration_type == IPConnection.ENUMERATION_TYPE_AVAILABLE:
if device_identifier == LCD20x4.DEVICE_IDENTIFIER:
try:
self.lcd = LCD20x4(uid, self.ipcon)
self.lcd.clear_display()
self.lcd.backlight_on()
log.info('LCD 20x4 initialized')
except Error as e:
log.error('LCD 20x4 init failed: ' + str(e.description))
self.lcd = None
elif device_identifier == AmbientLight.DEVICE_IDENTIFIER:
try:
self.al = AmbientLight(uid, self.ipcon)
self.al.set_illuminance_callback_period(5000)
self.al.register_callback(self.al.CALLBACK_ILLUMINANCE,
self.cb_illuminance)
log.info('Ambient Light initialized')
except Error as e:
log.error('Ambient Light init failed: ' +
str(e.description))
self.al = None
elif device_identifier == AmbientLightV2.DEVICE_IDENTIFIER:
try:
self.al_v2 = AmbientLightV2(uid, self.ipcon)
self.al_v2.set_configuration(
AmbientLightV2.ILLUMINANCE_RANGE_64000LUX,
AmbientLightV2.INTEGRATION_TIME_200MS)
self.al_v2.set_illuminance_callback_period(5000)
self.al_v2.register_callback(
self.al_v2.CALLBACK_ILLUMINANCE,
self.cb_illuminance_v2)
log.info('Ambient Light 2.0 initialized')
except Error as e:
log.error('Ambient Light 2.0 init failed: ' +
str(e.description))
self.al = None
elif device_identifier == Humidity.DEVICE_IDENTIFIER:
try:
self.hum = Humidity(uid, self.ipcon)
self.hum.set_humidity_callback_period(5000)
self.hum.register_callback(self.hum.CALLBACK_HUMIDITY,
self.cb_humidity)
log.info('Humidity initialized')
except Error as e:
log.error('Humidity init failed: ' + str(e.description))
self.hum = None
elif device_identifier == Barometer.DEVICE_IDENTIFIER:
try:
self.baro = Barometer(uid, self.ipcon)
self.baro.set_air_pressure_callback_period(5000)
self.baro.register_callback(
self.baro.CALLBACK_AIR_PRESSURE, self.cb_air_pressure)
log.info('Barometer initialized')
except Error as e:
log.error('Barometer init failed: ' + str(e.description))
self.baro = None
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 __init__(self, parent=None):
QMainWindow.__init__(self, parent)
self.initialized = False
self.altitude_error_i = 0
self.acc_scale = 0.0
self.start_time = time.time()
self.altitude_error = 0
self.inst_acceleration = 0.0
self.delta = 0
self.estimated_velocity = 0.0
self.estimated_altitude = 0.0
self.last_time = time.time()
self.last_orig_altitude = 0
self.last_estimated_altitude = 0
ipcon = IPConnection()
self.imu = IMU(UID_IMU, ipcon)
self.barometer = Barometer(UID_BAROMETER, ipcon)
ipcon.connect(HOST, PORT)
# Turn leds and orientation calculation off, to save calculation time
# for the IMU Brick. This makes sure that the measurements are taken
# in equidistant 2ms intervals
self.imu.leds_off()
self.imu.orientation_calculation_off()
# Turn averaging of in the Barometer Bricklet to make sure that
# the data is without delay
self.barometer.set_averaging(0, 0, 0)
red_pen = QPen(Qt.red)
red_pen.setWidth(5)
plot_list = [ #['', Qt.blue, self.get_orig_value],
['', red_pen, self.get_estimated_value]
]
self.plot_widget = PlotWidget('Height [m]', plot_list)
self.plot_widget.stop = False
self.setCentralWidget(self.plot_widget)
self.timer = QTimer()
self.timer.timeout.connect(self.update)
self.timer.start(6)
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 cb_enumerate(self, uid, connected_uid, position, hardware_version,
firmware_version, device_identifier, enumeration_type):
if enumeration_type == IPConnection.ENUMERATION_TYPE_CONNECTED or \
enumeration_type == IPConnection.ENUMERATION_TYPE_AVAILABLE:
if device_identifier == LCD20x4.DEVICE_IDENTIFIER:
try:
self.lcd = LCD20x4(uid, self.ipcon)
self.lcd.clear_display()
self.lcd.backlight_on()
log.info('LCD 20x4 initialized')
except Error as e:
log.error('LCD 20x4 init failed: ' + str(e.description))
self.lcd = None
elif device_identifier == AmbientLight.DEVICE_IDENTIFIER:
try:
self.al = AmbientLight(uid, self.ipcon)
self.al.set_illuminance_callback_period(1000)
self.al.register_callback(self.al.CALLBACK_ILLUMINANCE,
self.cb_illuminance)
log.info('Ambient Light initialized')
except Error as e:
log.error('Ambient Light init failed: ' + str(e.description))
self.al = None
elif device_identifier == AmbientLightV2.DEVICE_IDENTIFIER:
try:
self.al_v2 = AmbientLightV2(uid, self.ipcon)
self.al_v2.set_configuration(AmbientLightV2.ILLUMINANCE_RANGE_64000LUX,
AmbientLightV2.INTEGRATION_TIME_200MS)
self.al_v2.set_illuminance_callback_period(1000)
self.al_v2.register_callback(self.al_v2.CALLBACK_ILLUMINANCE,
self.cb_illuminance_v2)
log.info('Ambient Light 2.0 initialized')
except Error as e:
log.error('Ambient Light 2.0 init failed: ' + str(e.description))
self.al_v2 = None
elif device_identifier == Humidity.DEVICE_IDENTIFIER:
try:
self.hum = Humidity(uid, self.ipcon)
self.hum.set_humidity_callback_period(1000)
self.hum.register_callback(self.hum.CALLBACK_HUMIDITY,
self.cb_humidity)
log.info('Humidity initialized')
except Error as e:
log.error('Humidity init failed: ' + str(e.description))
self.hum = None
elif device_identifier == Barometer.DEVICE_IDENTIFIER:
try:
self.baro = Barometer(uid, self.ipcon)
self.baro.set_air_pressure_callback_period(1000)
self.baro.register_callback(self.baro.CALLBACK_AIR_PRESSURE,
self.cb_air_pressure)
log.info('Barometer initialized')
except Error as e:
log.error('Barometer init failed: ' + str(e.description))
self.baro = None
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 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
def __init__(self, parent=None):
QMainWindow.__init__(self, parent)
self.initialized = False
self.altitude_error_i = 0
self.acc_scale = 0.0
self.start_time = time.time()
self.altitude_error = 0
self.inst_acceleration = 0.0
self.delta = 0
self.estimated_velocity = 0.0
self.estimated_altitude = 0.0
self.last_time = time.time()
self.last_orig_altitude = 0
self.last_estimated_altitude = 0
ipcon = IPConnection()
self.imu = IMU(UID_IMU, ipcon)
self.barometer = Barometer(UID_BAROMETER, ipcon)
ipcon.connect(HOST, PORT)
# Turn leds and orientation calculation off, to save calculation time
# for the IMU Brick. This makes sure that the measurements are taken
# in equidistant 2ms intervals
self.imu.leds_off()
self.imu.orientation_calculation_off()
# Turn averaging of in the Barometer Bricklet to make sure that
# the data is without delay
self.barometer.set_averaging(0, 0, 0)
red_pen = QPen(Qt.red)
red_pen.setWidth(5)
plot_list = [#['', Qt.blue, self.get_orig_value],
['', red_pen, self.get_estimated_value]
]
self.plot_widget = PlotWidget('Height [m]', plot_list)
self.plot_widget.stop = False
self.setCentralWidget(self.plot_widget)
self.timer = QTimer()
self.timer.timeout.connect(self.update)
self.timer.start(6)
def cb_enumerate(self, uid, connected_uid, position, hardware_version,
firmware_version, device_identifier, enumeration_type):
if enumeration_type == IPConnection.ENUMERATION_TYPE_CONNECTED or \
enumeration_type == IPConnection.ENUMERATION_TYPE_AVAILABLE:
if device_identifier == LCD20x4.DEVICE_IDENTIFIER:
try:
self.lcd = LCD20x4(uid, self.ipcon)
self.lcd.clear_display()
self.lcd.backlight_on()
self.lcd.register_callback(self.lcd.CALLBACK_BUTTON_PRESSED, self.cb_button_pressed)
self.configure_custom_chars()
except Error as e:
self.error_msg.showMessage('LCD 20x4 init failed: ' + str(e.description))
self.lcd = None
elif device_identifier == AmbientLight.DEVICE_IDENTIFIER:
try:
self.al = AmbientLight(uid, self.ipcon)
self.al.set_illuminance_callback_period(1000)
self.al.register_callback(self.al.CALLBACK_ILLUMINANCE,
self.cb_illuminance)
except Error as e:
self.error_msg.showMessage('Ambient Light init failed: ' + str(e.description))
self.al = None
elif device_identifier == Humidity.DEVICE_IDENTIFIER:
try:
self.hum = Humidity(uid, self.ipcon)
self.hum.set_humidity_callback_period(1000)
self.hum.register_callback(self.hum.CALLBACK_HUMIDITY,
self.cb_humidity)
except Error as e:
self.error_msg.showMessage('Humidity init failed: ' + str(e.description))
self.hum = None
elif device_identifier == Barometer.DEVICE_IDENTIFIER:
try:
self.baro = Barometer(uid, self.ipcon)
self.baro.set_air_pressure_callback_period(1000)
self.baro.register_callback(self.baro.CALLBACK_AIR_PRESSURE,
self.cb_air_pressure)
except Error as e:
self.error_msg.showMessage('Barometer init failed: ' + str(e.description))
self.baro = None
class WeatherStation:
HOST = "localhost"
PORT = 4223
ipcon = None
lcd = None
lcd_clear = False
al = None
hum = None
baro = None
def __init__(self):
self.ipcon = IPConnection()
while True:
try:
self.ipcon.connect(WeatherStation.HOST, WeatherStation.PORT)
break
except Error as e:
log.error('Connection Error: ' + str(e.description))
timer.sleep(1)
except socket.error as e:
log.error('Socket error: ' + str(e))
timer.sleep(1)
self.ipcon.register_callback(IPConnection.CALLBACK_ENUMERATE,
self.cb_enumerate)
self.ipcon.register_callback(IPConnection.CALLBACK_CONNECTED,
self.cb_connected)
while True:
try:
self.ipcon.enumerate()
break
except Error as e:
log.error('Enumerate Error: ' + str(e.description))
timer.sleep(1)
def start(self):
t = 10
extended_timer = 10
try:
while True:
if self.lcd:
self.write_date(0, 0)
self.write_time(1, 0)
t = t + 1
if t >= extended_timer:
if self.baro:
self.write_temperatur(2, 0)
if self.hum:
self.write_humidity(3, 0)
t = 0
timer.sleep(1)
except KeyboardInterrupt:
if weather_station.ipcon != None:
weather_station.ipcon.disconnect()
return
def init_lcd(self, uid):
try:
self.lcd = LCD20x4(uid, self.ipcon)
self.lcd.clear_display()
self.lcd.backlight_on()
log.info('LCD 20x4 initialized')
except Error as e:
log.error('LCD 20x4 init failed: ' + str(e.description))
self.lcd = None
def init_ambientlight(self, uid):
try:
self.al = AmbientLight(uid, self.ipcon)
self.al.set_illuminance_callback_period(1000)
self.al.register_callback(self.al.CALLBACK_ILLUMINANCE,
self.cb_illuminance)
except Error as e:
log.error('Ambient Light init failed: ' + str(e.description))
self.al = None
def init_barometer(self, uid):
try:
self.baro = Barometer(uid, self.ipcon)
except Error as e:
log.error('Barometer init failed: ' + str(e.description))
self.baro = None
def init_humidity(self, uid):
try:
self.hum = Humidity(uid, self.ipcon)
except Error as e:
log.error('Humidity init failed: ' + str(e.description))
self.hum = None
def write_time(self, line, start_position):
lt = localtime()
hour, minute, second = lt[3:6]
self.lcd.write_line(line, start_position, "Time: %02i:%02i:%02i" % (hour, minute, second))
def write_date(self, line, start_position):
lt = localtime()
year, month, day = lt[0:3]
self.lcd.write_line(line, start_position, "Date: %02i.%02i.%04i" % (day, month, year))
def write_temperatur(self, line, start_position):
try:
temperature = self.baro.get_chip_temperature()
text = 'Temp: %5.2f \xDFC' % (temperature / 100.0)
self.lcd.write_line(line, start_position, text)
except Error as e:
log.error('Could not get temperature: ' + str(e.description))
return
def write_humidity(self, line, start_position):
try:
h = self.hum.get_humidity()
text = 'Humidity: %6.2f %%' % (h / 10.0)
self.lcd.write_line(line, start_position, text)
except Error as e:
log.error('Could not get temperature: ' + str(e.description))
return
def cb_illuminance(self, illuminance):
if self.lcd is not None:
i = illuminance / 10.0
if i < 0.5 and self.lcd.is_backlight_on():
self.lcd.backlight_off()
elif i >= 0.5 and not self.lcd.is_backlight_on():
self.lcd.backlight_on()
def cb_enumerate(self, uid, connected_uid, position, hardware_version,
firmware_version, device_identifier, enumeration_type):
if enumeration_type == IPConnection.ENUMERATION_TYPE_CONNECTED or \
enumeration_type == IPConnection.ENUMERATION_TYPE_AVAILABLE:
if device_identifier == LCD20x4.DEVICE_IDENTIFIER:
self.init_lcd(uid)
elif device_identifier == AmbientLight.DEVICE_IDENTIFIER:
self.init_ambientlight(uid)
elif device_identifier == Humidity.DEVICE_IDENTIFIER:
self.init_humidity(uid)
elif device_identifier == Barometer.DEVICE_IDENTIFIER:
self.init_barometer(uid)
def cb_connected(self, connected_reason):
if connected_reason == IPConnection.CONNECT_REASON_AUTO_RECONNECT:
log.info('Auto Reconnect')
while True:
try:
self.ipcon.enumerate()
break
except Error as e:
log.error('Enumerate Error: ' + str(e.description))
timer.sleep(1)
## Get voltage and current from stack (in mV / mA)
#voltage = master.get_stack_voltage()
#current = master.get_stack_current()
##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()
UID = "bAc" # Change to your UID
from tinkerforge.ip_connection import IPConnection
from tinkerforge.bricklet_barometer import Barometer
# Callback function for air pressure callback (parameter has unit mbar/1000)
def cb_air_pressure(air_pressure):
print('Air Pressure: ' + str(air_pressure/1000.0) + ' mbar')
# Callback function for altitude callback (parameter has unit cm)
def cb_altitude(altitude):
print('Altitude: ' + str(altitude/100.0) + ' m')
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
# Set Period for air pressure and altitude callbacks to 1s (1000ms)
# Note: The air pressure and altitude callbacks are only called every second
# if the air pressure or altitude has changed since the last call!
b.set_air_pressure_callback_period(1000)
b.set_altitude_callback_period(1000)
# Register air pressure callback to function cb_air_pressure
b.register_callback(b.CALLBACK_AIR_PRESSURE, cb_air_pressure)
# Register altitude callback to function cb_altitude
b.register_callback(b.CALLBACK_ALTITUDE, cb_altitude)
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)
class WeatherStation:
HOST = "localhost"
PORT = 4223
ipcon = None
lcd = None
al = None
hum = None
baro = None
def __init__(self):
self.xively = Xively()
self.ipcon = IPConnection()
while True:
try:
self.ipcon.connect(WeatherStation.HOST, WeatherStation.PORT)
break
except Error as e:
log.error('Connection Error: ' + str(e.description))
time.sleep(1)
except socket.error as e:
log.error('Socket error: ' + str(e))
time.sleep(1)
self.ipcon.register_callback(IPConnection.CALLBACK_ENUMERATE,
self.cb_enumerate)
self.ipcon.register_callback(IPConnection.CALLBACK_CONNECTED,
self.cb_connected)
while True:
try:
self.ipcon.enumerate()
break
except Error as e:
log.error('Enumerate Error: ' + str(e.description))
time.sleep(1)
def cb_illuminance(self, illuminance):
if self.lcd is not None:
text = 'Illuminanc %6.2f lx' % (illuminance/10.0)
self.lcd.write_line(0, 0, text)
self.xively.put('AmbientLight', illuminance/10.0)
log.info('Write to line 0: ' + text)
def cb_humidity(self, humidity):
if self.lcd is not None:
text = 'Humidity %6.2f %%' % (humidity/10.0)
self.lcd.write_line(1, 0, text)
self.xively.put('Humidity', humidity/10.0)
log.info('Write to line 1: ' + text)
def cb_air_pressure(self, air_pressure):
if self.lcd is not None:
text = 'Air Press %7.2f mb' % (air_pressure/1000.0)
self.lcd.write_line(2, 0, text)
self.xively.put('AirPressure', air_pressure/1000.0)
log.info('Write to line 2: ' + text)
temperature = self.baro.get_chip_temperature()/100.0
# \xDF == ° on LCD 20x4 charset
text = 'Temperature %5.2f \xDFC' % temperature
self.lcd.write_line(3, 0, text)
self.xively.put('Temperature', temperature)
log.info('Write to line 3: ' + text.replace('\xDF', '°'))
def cb_enumerate(self, uid, connected_uid, position, hardware_version,
firmware_version, device_identifier, enumeration_type):
if enumeration_type == IPConnection.ENUMERATION_TYPE_CONNECTED or \
enumeration_type == IPConnection.ENUMERATION_TYPE_AVAILABLE:
if device_identifier == LCD20x4.DEVICE_IDENTIFIER:
try:
self.lcd = LCD20x4(uid, self.ipcon)
self.lcd.clear_display()
self.lcd.backlight_on()
log.info('LCD20x4 initialized')
except Error as e:
log.error('LCD20x4 init failed: ' + str(e.description))
self.lcd = None
elif device_identifier == AmbientLight.DEVICE_IDENTIFIER:
try:
self.al = AmbientLight(uid, self.ipcon)
self.al.set_illuminance_callback_period(1000)
self.al.register_callback(self.al.CALLBACK_ILLUMINANCE,
self.cb_illuminance)
log.info('AmbientLight initialized')
except Error as e:
log.error('AmbientLight init failed: ' + str(e.description))
self.al = None
elif device_identifier == Humidity.DEVICE_IDENTIFIER:
try:
self.hum = Humidity(uid, self.ipcon)
self.hum.set_humidity_callback_period(1000)
self.hum.register_callback(self.hum.CALLBACK_HUMIDITY,
self.cb_humidity)
log.info('Humidity initialized')
except Error as e:
log.error('Humidity init failed: ' + str(e.description))
self.hum = None
elif device_identifier == Barometer.DEVICE_IDENTIFIER:
try:
self.baro = Barometer(uid, self.ipcon)
self.baro.set_air_pressure_callback_period(1000)
self.baro.register_callback(self.baro.CALLBACK_AIR_PRESSURE,
self.cb_air_pressure)
log.info('Barometer initialized')
except Error as e:
log.error('Barometer init failed: ' + str(e.description))
self.baro = None
def cb_connected(self, connected_reason):
if connected_reason == IPConnection.CONNECT_REASON_AUTO_RECONNECT:
log.info('Auto Reconnect')
while True:
try:
self.ipcon.enumerate()
break
except Error as e:
log.error('Enumerate Error: ' + str(e.description))
time.sleep(1)
#!/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()
class IMUBarometerFusion(QMainWindow):
FACTOR = 1
KP1 = 0.55*FACTOR # PI observer velocity gain
KP2 = 1.0*FACTOR # PI observer position gain
KI = 0.001/FACTOR # PI observer integral gain (bias cancellation)
def __init__(self, parent=None):
QMainWindow.__init__(self, parent)
self.initialized = False
self.altitude_error_i = 0
self.acc_scale = 0.0
self.start_time = time.time()
self.altitude_error = 0
self.inst_acceleration = 0.0
self.delta = 0
self.estimated_velocity = 0.0
self.estimated_altitude = 0.0
self.last_time = time.time()
self.last_orig_altitude = 0
self.last_estimated_altitude = 0
ipcon = IPConnection()
self.imu = IMU(UID_IMU, ipcon)
self.barometer = Barometer(UID_BAROMETER, ipcon)
ipcon.connect(HOST, PORT)
# Turn leds and orientation calculation off, to save calculation time
# for the IMU Brick. This makes sure that the measurements are taken
# in equidistant 2ms intervals
self.imu.leds_off()
self.imu.orientation_calculation_off()
# Turn averaging of in the Barometer Bricklet to make sure that
# the data is without delay
self.barometer.set_averaging(0, 0, 0)
red_pen = QPen(Qt.red)
red_pen.setWidth(5)
plot_list = [#['', Qt.blue, self.get_orig_value],
['', red_pen, self.get_estimated_value]
]
self.plot_widget = PlotWidget('Height [m]', plot_list)
self.plot_widget.stop = False
self.setCentralWidget(self.plot_widget)
self.timer = QTimer()
self.timer.timeout.connect(self.update)
self.timer.start(6)
def get_orig_value(self):
return self.last_orig_altitude
def get_estimated_value(self):
return self.last_estimated_altitude
# Update measurements and compute new altitude every 6ms.
def update(self):
q = self.imu.get_quaternion()
acc = self.imu.get_acceleration()
alt = self.barometer.get_altitude()/100.0
compensated_acc_q = self.compute_compensated_acc(q, acc)
compensated_acc_q_earth = self.compute_dynamic_acceleration_vector(q, compensated_acc_q)
self.last_orig_altitude = alt
self.last_estimated_altitude = self.compute_altitude(compensated_acc_q_earth[2], alt)
# Remove gravity from accelerometer measurements
def compute_compensated_acc(self, q, a):
g = (2*(q.x*q.z - q.w*q.y),
2*(q.w*q.x + q.y*q.z),
q.w*q.w - q.x*q.x - q.y*q.y + q.z*q.z)
return (a[0]/1000.0 - g[0],
a[1]/1000.0 - g[1],
a[2]/1000.0 - g[2],
0.0)
# Rotate dynamic acceleration vector from sensor frame to earth frame
def compute_dynamic_acceleration_vector(self, q, compensated_acc_q):
def q_conj(q):
return -q[0], -q[1], -q[2], q[3]
def q_mult(q1, q2):
x1, y1, z1, w1 = q1
x2, y2, z2, w2 = q2
w = w1 * w2 - x1 * x2 - y1 * y2 - z1 * z2
x = w1 * x2 + x1 * w2 + y1 * z2 - z1 * y2
y = w1 * y2 + y1 * w2 + z1 * x2 - x1 * z2
z = w1 * z2 + z1 * w2 + x1 * y2 - y1 * x2
return x, y, z, w
tmp = q_mult(q, compensated_acc_q)
return q_mult(tmp, q_conj(q))
# Computes estimation of altitude based on barometer and accelerometer measurements
# Code is based on blog post from Fabio Varesano: http://www.varesano.net/blog/fabio/complementary-filtering-high-res-barometer-and-accelerometer-reliable-altitude-estimation
# He seems to have got the idea from the MultiWii project
def compute_altitude(self, compensated_acceleration, altitude):
self.current_time = time.time()
# Initialization
if not self.initialized:
self.initialized = True
self.estimated_altitude = altitude
self.estimated_velocity = 0
self.altitude_error_i = 0
# Estimation Error
self.altitude_error = altitude - self.estimated_altitude
self.altitude_error_i = self.altitude_error_i + self.altitude_error
self.altitude_error_i = min(2500.0, max(-2500.0, self.altitude_error_i))
self.inst_acceleration = compensated_acceleration * 9.80665 + self.altitude_error_i * self.KI
dt = self.current_time - self.last_time
# Integrators
self.delta = self.inst_acceleration * dt + (self.KP1 * dt) * self.altitude_error
self.estimated_altitude += (self.estimated_velocity/5.0 + self.delta) * (dt / 2) + (self.KP2 * dt) * self.altitude_error
self.estimated_velocity += self.delta*10.0
self.last_time = self.current_time
return self.estimated_altitude
class WeatherStation:
HOST = "localhost"
PORT = 4223
ipcon = None
lcd = None
al = None
hum = None
baro = None
def __init__(self):
self.ipcon = IPConnection()
while True:
try:
self.ipcon.connect(WeatherStation.HOST, WeatherStation.PORT)
break
except Error as e:
log.error('Connection Error: ' + str(e.description))
time.sleep(1)
except socket.error as e:
log.error('Socket error: ' + str(e))
time.sleep(1)
self.ipcon.register_callback(IPConnection.CALLBACK_ENUMERATE,
self.cb_enumerate)
self.ipcon.register_callback(IPConnection.CALLBACK_CONNECTED,
self.cb_connected)
while True:
try:
self.ipcon.enumerate()
break
except Error as e:
log.error('Enumerate Error: ' + str(e.description))
time.sleep(1)
def cb_illuminance(self, illuminance):
if self.lcd is not None:
text = 'Illuminanc %6.2f lx' % (illuminance / 10.0)
self.lcd.write_line(0, 0, text)
log.info('Write to line 0: ' + text)
def cb_humidity(self, humidity):
if self.lcd is not None:
text = 'Humidity %6.2f %%' % (humidity / 10.0)
self.lcd.write_line(1, 0, text)
log.info('Write to line 1: ' + text)
def cb_air_pressure(self, air_pressure):
if self.lcd is not None:
text = 'Air Press %7.2f mb' % (air_pressure / 1000.0)
self.lcd.write_line(2, 0, text)
log.info('Write to line 2: ' + text)
try:
temperature = self.baro.get_chip_temperature()
except Error as e:
log.error('Could not get temperature: ' + str(e.description))
return
# \xDF == ° on LCD 20x4 charset
text = 'Temperature %5.2f \xDFC' % (temperature / 100.0)
self.lcd.write_line(3, 0, text)
log.info('Write to line 3: ' + text.replace('\xDF', '°'))
def cb_enumerate(self, uid, connected_uid, position, hardware_version,
firmware_version, device_identifier, enumeration_type):
if enumeration_type == IPConnection.ENUMERATION_TYPE_CONNECTED or \
enumeration_type == IPConnection.ENUMERATION_TYPE_AVAILABLE:
if device_identifier == LCD20x4.DEVICE_IDENTIFIER:
try:
self.lcd = LCD20x4(uid, self.ipcon)
self.lcd.clear_display()
self.lcd.backlight_on()
log.info('LCD 20x4 initialized')
except Error as e:
log.error('LCD 20x4 init failed: ' + str(e.description))
self.lcd = None
elif device_identifier == AmbientLight.DEVICE_IDENTIFIER:
try:
self.al = AmbientLight(uid, self.ipcon)
self.al.set_illuminance_callback_period(1000)
self.al.register_callback(self.al.CALLBACK_ILLUMINANCE,
self.cb_illuminance)
log.info('Ambient Light initialized')
except Error as e:
log.error('Ambient Light init failed: ' +
str(e.description))
self.al = None
elif device_identifier == Humidity.DEVICE_IDENTIFIER:
try:
self.hum = Humidity(uid, self.ipcon)
self.hum.set_humidity_callback_period(1000)
self.hum.register_callback(self.hum.CALLBACK_HUMIDITY,
self.cb_humidity)
log.info('Humidity initialized')
except Error as e:
log.error('Humidity init failed: ' + str(e.description))
self.hum = None
elif device_identifier == Barometer.DEVICE_IDENTIFIER:
try:
self.baro = Barometer(uid, self.ipcon)
self.baro.set_air_pressure_callback_period(1000)
self.baro.register_callback(
self.baro.CALLBACK_AIR_PRESSURE, self.cb_air_pressure)
log.info('Barometer initialized')
except Error as e:
log.error('Barometer init failed: ' + str(e.description))
self.baro = None
def cb_connected(self, connected_reason):
if connected_reason == IPConnection.CONNECT_REASON_AUTO_RECONNECT:
log.info('Auto Reconnect')
while True:
try:
self.ipcon.enumerate()
break
except Error as e:
log.error('Enumerate Error: ' + str(e.description))
time.sleep(1)
def init_barometer(self, uid):
try:
self.baro = Barometer(uid, self.ipcon)
except Error as e:
log.error('Barometer init failed: ' + str(e.description))
self.baro = None
class IMUBarometerFusion(QMainWindow):
FACTOR = 1
KP1 = 0.55 * FACTOR # PI observer velocity gain
KP2 = 1.0 * FACTOR # PI observer position gain
KI = 0.001 / FACTOR # PI observer integral gain (bias cancellation)
def __init__(self, parent=None):
QMainWindow.__init__(self, parent)
self.initialized = False
self.altitude_error_i = 0
self.acc_scale = 0.0
self.start_time = time.time()
self.altitude_error = 0
self.inst_acceleration = 0.0
self.delta = 0
self.estimated_velocity = 0.0
self.estimated_altitude = 0.0
self.last_time = time.time()
self.last_orig_altitude = 0
self.last_estimated_altitude = 0
ipcon = IPConnection()
self.imu = IMU(UID_IMU, ipcon)
self.barometer = Barometer(UID_BAROMETER, ipcon)
ipcon.connect(HOST, PORT)
# Turn leds and orientation calculation off, to save calculation time
# for the IMU Brick. This makes sure that the measurements are taken
# in equidistant 2ms intervals
self.imu.leds_off()
self.imu.orientation_calculation_off()
# Turn averaging of in the Barometer Bricklet to make sure that
# the data is without delay
self.barometer.set_averaging(0, 0, 0)
red_pen = QPen(Qt.red)
red_pen.setWidth(5)
plot_list = [ #['', Qt.blue, self.get_orig_value],
['', red_pen, self.get_estimated_value]
]
self.plot_widget = PlotWidget('Height [m]', plot_list)
self.plot_widget.stop = False
self.setCentralWidget(self.plot_widget)
self.timer = QTimer()
self.timer.timeout.connect(self.update)
self.timer.start(6)
def get_orig_value(self):
return self.last_orig_altitude
def get_estimated_value(self):
return self.last_estimated_altitude
# Update measurements and compute new altitude every 6ms.
def update(self):
q = self.imu.get_quaternion()
acc = self.imu.get_acceleration()
alt = self.barometer.get_altitude() / 100.0
compensated_acc_q = self.compute_compensated_acc(q, acc)
compensated_acc_q_earth = self.compute_dynamic_acceleration_vector(
q, compensated_acc_q)
self.last_orig_altitude = alt
self.last_estimated_altitude = self.compute_altitude(
compensated_acc_q_earth[2], alt)
# Remove gravity from accelerometer measurements
def compute_compensated_acc(self, q, a):
g = (2 * (q.x * q.z - q.w * q.y), 2 * (q.w * q.x + q.y * q.z),
q.w * q.w - q.x * q.x - q.y * q.y + q.z * q.z)
return (a[0] / 1000.0 - g[0], a[1] / 1000.0 - g[1],
a[2] / 1000.0 - g[2], 0.0)
# Rotate dynamic acceleration vector from sensor frame to earth frame
def compute_dynamic_acceleration_vector(self, q, compensated_acc_q):
def q_conj(q):
return -q[0], -q[1], -q[2], q[3]
def q_mult(q1, q2):
x1, y1, z1, w1 = q1
x2, y2, z2, w2 = q2
w = w1 * w2 - x1 * x2 - y1 * y2 - z1 * z2
x = w1 * x2 + x1 * w2 + y1 * z2 - z1 * y2
y = w1 * y2 + y1 * w2 + z1 * x2 - x1 * z2
z = w1 * z2 + z1 * w2 + x1 * y2 - y1 * x2
return x, y, z, w
tmp = q_mult(q, compensated_acc_q)
return q_mult(tmp, q_conj(q))
# Computes estimation of altitude based on barometer and accelerometer measurements
# Code is based on blog post from Fabio Varesano: http://www.varesano.net/blog/fabio/complementary-filtering-high-res-barometer-and-accelerometer-reliable-altitude-estimation
# He seems to have got the idea from the MultiWii project
def compute_altitude(self, compensated_acceleration, altitude):
self.current_time = time.time()
# Initialization
if not self.initialized:
self.initialized = True
self.estimated_altitude = altitude
self.estimated_velocity = 0
self.altitude_error_i = 0
# Estimation Error
self.altitude_error = altitude - self.estimated_altitude
self.altitude_error_i = self.altitude_error_i + self.altitude_error
self.altitude_error_i = min(2500.0, max(-2500.0,
self.altitude_error_i))
self.inst_acceleration = compensated_acceleration * 9.80665 + self.altitude_error_i * self.KI
dt = self.current_time - self.last_time
# Integrators
self.delta = self.inst_acceleration * dt + (self.KP1 *
dt) * self.altitude_error
self.estimated_altitude += (self.estimated_velocity / 5.0 +
self.delta) * (dt / 2) + (
self.KP2 * dt) * self.altitude_error
self.estimated_velocity += self.delta * 10.0
self.last_time = self.current_time
return self.estimated_altitude
from tinkerforge.ip_connection import IPConnection
from tinkerforge.bricklet_lcd_20x4 import LCD20x4
from tinkerforge.bricklet_barometer import Barometer
from tinkerforge.bricklet_ambient_light import AmbientLight
from tinkerforge.brick_master import Master
from tinkerforge.bricklet_temperature import Temperature
from tinkerforge.bricklet_humidity import Humidity
if __name__ == "__main__":
ipcon1 = IPConnection() # Create IP connection
ipcon2 = IPConnection() # Create IP connection
lcd = LCD20x4(UID_L, ipcon1) # Create device object
b = Barometer(UID_B, ipcon2) # Create device object
temp1 = Temperature(UID_T1, ipcon2)
temp2 = Temperature(UID_T2, ipcon1)
al = AmbientLight(UID_A, ipcon1) # Create device object
h = Humidity(UID_F, ipcon2) # Create device object
master = Master(UID_M, ipcon2) # Create device object
ipcon1.connect(HOST1, PORT) # Connect to brickd
ipcon2.connect(HOST2, PORT)
while True:
air_pressure = b.get_air_pressure()/1000.0
altitude = b.get_altitude()/100.0
illuminance = al.get_illuminance()/10.0
bartemp = b.get_chip_temperature()/100.0
esszimm = temp1.get_temperature()/100.0
flur = temp2.get_temperature()/100.0
class WeatherStation(QApplication):
HOST = "localhost"
PORT = 4223
ipcon = None
lcd = None
al = None
hum = None
baro = None
projects = []
active_project = None
error_msg = None
def __init__(self, args):
super(QApplication, self).__init__(args)
self.error_msg = QErrorMessage()
self.ipcon = IPConnection()
signal.signal(signal.SIGINT, self.exit_demo)
signal.signal(signal.SIGTERM, self.exit_demo)
timer = QTimer(self)
timer.setSingleShot(True)
timer.timeout.connect(self.connect)
timer.start(1)
def exit_demo(self, signl=None, frme=None):
try:
self.ipcon.disconnect()
self.timer.stop()
self.tabs.destroy()
except:
pass
sys.exit()
def open_gui(self):
self.main = MainWindow(self)
self.main.setFixedSize(730, 430)
self.main.setWindowIcon(QIcon(os.path.join(ProgramPath.program_path(), "demo-icon.png")))
self.tabs = QTabWidget()
widget = QWidget()
layout = QVBoxLayout()
layout.addWidget(self.tabs)
widget.setLayout(layout)
self.main.setCentralWidget(widget)
self.projects.append(ProjectEnvDisplay(self.tabs, self))
self.projects.append(ProjectStatistics(self.tabs, self))
self.projects.append(ProjectXively(self.tabs, self))
self.tabs.addTab(self.projects[0], "Display Environment Measurements")
self.tabs.addTab(self.projects[1], "Show Statistics with Button Control")
self.tabs.addTab(self.projects[2], "Connect to Xively")
self.active_project = self.projects[0]
self.tabs.currentChanged.connect(self.tabChangedSlot)
self.main.setWindowTitle("Starter Kit: Weather Station Demo " + config.DEMO_VERSION)
self.main.show()
def connect(self):
try:
self.ipcon.connect(WeatherStation.HOST, WeatherStation.PORT)
except Error as e:
self.error_msg.showMessage('Connection Error: ' + str(e.description) + "\nBrickd installed and running?")
return
except socket.error as e:
self.error_msg.showMessage('Socket error: ' + str(e) + "\nBrickd installed and running?")
return
self.ipcon.register_callback(IPConnection.CALLBACK_ENUMERATE,
self.cb_enumerate)
self.ipcon.register_callback(IPConnection.CALLBACK_CONNECTED,
self.cb_connected)
try:
self.ipcon.enumerate()
except Error as e:
self.error_msg.showMessage('Enumerate Error: ' + str(e.description))
return
self.open_gui()
def tabChangedSlot(self, tabIndex):
if self.lcd is not None:
self.lcd.clear_display()
self.active_project = self.projects[tabIndex]
def cb_illuminance(self, illuminance):
for p in self.projects:
p.update_illuminance(illuminance)
def cb_humidity(self, humidity):
for p in self.projects:
p.update_humidity(humidity)
def cb_air_pressure(self, air_pressure):
for p in self.projects:
p.update_air_pressure(air_pressure)
try:
temperature = self.baro.get_chip_temperature()
except Error as e:
print('Could not get temperature: ' + str(e.description))
return
for p in self.projects:
p.update_temperature(temperature)
def configure_custom_chars(self):
c = [[0x00 for x in range(8)] for y in range(8)]
c[0] = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff]
c[1] = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff]
c[2] = [0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff]
c[3] = [0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff]
c[4] = [0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff]
c[5] = [0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff]
c[6] = [0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff]
c[7] = [0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff]
for i in range(len(c)):
self.lcd.set_custom_character(i, c[i]);
def cb_button_pressed(self, button):
for p in self.projects:
p.button_pressed(button)
def cb_enumerate(self, uid, connected_uid, position, hardware_version,
firmware_version, device_identifier, enumeration_type):
if enumeration_type == IPConnection.ENUMERATION_TYPE_CONNECTED or \
enumeration_type == IPConnection.ENUMERATION_TYPE_AVAILABLE:
if device_identifier == LCD20x4.DEVICE_IDENTIFIER:
try:
self.lcd = LCD20x4(uid, self.ipcon)
self.lcd.clear_display()
self.lcd.backlight_on()
self.lcd.register_callback(self.lcd.CALLBACK_BUTTON_PRESSED, self.cb_button_pressed)
self.configure_custom_chars()
except Error as e:
self.error_msg.showMessage('LCD 20x4 init failed: ' + str(e.description))
self.lcd = None
elif device_identifier == AmbientLight.DEVICE_IDENTIFIER:
try:
self.al = AmbientLight(uid, self.ipcon)
self.al.set_illuminance_callback_period(1000)
self.al.register_callback(self.al.CALLBACK_ILLUMINANCE,
self.cb_illuminance)
except Error as e:
self.error_msg.showMessage('Ambient Light init failed: ' + str(e.description))
self.al = None
elif device_identifier == Humidity.DEVICE_IDENTIFIER:
try:
self.hum = Humidity(uid, self.ipcon)
self.hum.set_humidity_callback_period(1000)
self.hum.register_callback(self.hum.CALLBACK_HUMIDITY,
self.cb_humidity)
except Error as e:
self.error_msg.showMessage('Humidity init failed: ' + str(e.description))
self.hum = None
elif device_identifier == Barometer.DEVICE_IDENTIFIER:
try:
self.baro = Barometer(uid, self.ipcon)
self.baro.set_air_pressure_callback_period(1000)
self.baro.register_callback(self.baro.CALLBACK_AIR_PRESSURE,
self.cb_air_pressure)
except Error as e:
self.error_msg.showMessage('Barometer init failed: ' + str(e.description))
self.baro = None
def cb_connected(self, connected_reason):
if connected_reason == IPConnection.CONNECT_REASON_AUTO_RECONNECT:
while True:
try:
self.ipcon.enumerate()
break
except Error as e:
self.error_msg.showMessage('Enumerate Error: ' + str(e.description))
time.sleep(1)
HOST = "localhost"
PORT = 4223
UID = "bAc" # Change to your UID
from tinkerforge.ip_connection import IPConnection
from tinkerforge.bricklet_barometer import Barometer
# Callback for air pressure greater than 1025 mbar
def cb_reached(air_pressure):
print('We have ' + str(air_pressure/1000.0) + ' mbar.')
print('Enjoy the potentially good weather!')
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 threshold callbacks with a debounce time of 10 seconds (10000ms)
b.set_debounce_period(10000)
# Register threshold reached callback to function cb_reached
b.register_callback(b.CALLBACK_AIR_PRESSURE_REACHED, cb_reached)
# Configure threshold for "greater than 1025 mbar" (unit is mbar/1000)
b.set_air_pressure_callback_threshold('>', 1025*1000, 0)
raw_input('Press key to exit\n') # Use input() in Python 3
