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
