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(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)
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)
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)
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
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)
raw_input('Press key to exit\n') # Use input() in Python 3
