thieled

Well I've edited the xively code for beebotte as follows:

#!/usr/bin/env python

# -*- coding: utf-8 -*-

import socket

import sys

import time

import math

import logging as log

log.basicConfig(level=log.INFO)

from beebotte import *

from tinkerforge.ip_connection import IPConnection

from tinkerforge.ip_connection import Error

from tinkerforge.brick_master import Master

from tinkerforge.bricklet_lcd_20x4 import LCD20x4

from tinkerforge.bricklet_ambient_light import AmbientLight

from tinkerforge.bricklet_humidity import Humidity

from tinkerforge.bricklet_barometer import Barometer

class WeatherStation:

    HOST = "localhost"

    PORT = 4223

    ipcon = None

    lcd = None

    al = None

    hum = None

    baro = None

    def __init__(self):

        # beebotte.com parameters

        AccessKey='...'

        SecurityKey='...'

        # connect to beebotte.com

        self.bbt = BBT(AccessKey,SecurityKey)

        self.temp_resource=Resource(self.bbt,'RaspberryPiWeatherStation','Temperature')

        self.humid_resource=Resource(self.bbt,'RaspberryPiWeatherStation','Humidity')

        self.airpress_resource=Resource(self.bbt,'RaspberryPiWeatherStation','AirPressure')

        self.amblight_resource=Resource(self.bbt,'RaspberryPiWeatherStation','AmbientLight')

        print('beebotte connected')

        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):

        global amblight_resource

        if self.lcd is not None:

            text = 'Illuminanc %6.2f lx' % (illuminance/10.0)

            self.lcd.write_line(0, 0, text)

            self.amblight_resource.write(illuminance/10.0)

            log.info('Write to line 0: ' + text)

    def cb_humidity(self, humidity):

        global humid_resource

        if self.lcd is not None:

            text = 'Humidity  %6.2f %%' % (humidity/10.0)

            self.lcd.write_line(1, 0, text)

            self.humid_resource.write(humidity/10.0)

            log.info('Write to line 1: ' + text)

    def cb_air_pressure(self, air_pressure):

        global airpress_resource

        global temp_resource

        if self.lcd is not None:

            text = 'Air Press %7.2f mb' % (air_pressure/1000.0)

            self.lcd.write_line(2, 0, text)

            self.airpress_resource.write(air_pressure/1000.0)

            log.info('Write to line 2: ' + text)

            try:

                temperature = self.baro.get_chip_temperature()/100.0

            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

            self.lcd.write_line(3, 0, text)

            self.temp_resource.write(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(10000)

                    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(10000)

                    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(10000)

                    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)

if __name__ == "__main__":

    log.info('Weather Station: Start')

    weather_station = WeatherStation()

    if sys.version_info < (3, 0):

        input = raw_input # Compatibility for Python 2.x

    input('Press key to exit\n')

    if weather_station.ipcon != None:

        weather_station.ipcon.disconnect()

    log.info('Weather Station: End')

It runs OK for a while and then I get the following error message:

Exception in thread Callback-Processor:

Traceback (most recent call last):

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/connectionpool.py", line 518, in urlopen

    body=body, headers=headers)

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/connectionpool.py", line 330, in _make_request

    conn.request(method, url, **httplib_request_kw)

  File "/usr/lib/python3.2/http/client.py", line 970, in request

    self._send_request(method, url, body, headers)

  File "/usr/lib/python3.2/http/client.py", line 1008, in _send_request

    self.endheaders(body)

  File "/usr/lib/python3.2/http/client.py", line 966, in endheaders

    self._send_output(message_body)

  File "/usr/lib/python3.2/http/client.py", line 811, in _send_output

    self.send(msg)

  File "/usr/lib/python3.2/http/client.py", line 749, in send

    self.connect()

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/connection.py", line 155, in connect

    conn = self._new_conn()

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/connection.py", line 134, in _new_conn

    (self.host, self.port), self.timeout, **extra_kw)

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/util/connection.py", line 64, in create_connection

    for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):

socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "/usr/local/lib/python3.2/dist-packages/requests/adapters.py", line 370, in send

    timeout=timeout

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/connectionpool.py", line 564, in urlopen

    _pool=self, _stacktrace=stacktrace)

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/util/retry.py", line 245, in increment

    raise six.reraise(type(error), error, _stacktrace)

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/packages/six.py", line 309, in reraise

    raise value.with_traceback(tb)

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/connectionpool.py", line 518, in urlopen

    body=body, headers=headers)

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/connectionpool.py", line 330, in _make_request

    conn.request(method, url, **httplib_request_kw)

  File "/usr/lib/python3.2/http/client.py", line 970, in request

    self._send_request(method, url, body, headers)

  File "/usr/lib/python3.2/http/client.py", line 1008, in _send_request

    self.endheaders(body)

  File "/usr/lib/python3.2/http/client.py", line 966, in endheaders

    self._send_output(message_body)

  File "/usr/lib/python3.2/http/client.py", line 811, in _send_output

    self.send(msg)

  File "/usr/lib/python3.2/http/client.py", line 749, in send

    self.connect()

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/connection.py", line 155, in connect

    conn = self._new_conn()

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/connection.py", line 134, in _new_conn

    (self.host, self.port), self.timeout, **extra_kw)

  File "/usr/local/lib/python3.2/dist-packages/requests/packages/urllib3/util/connection.py", line 64, in create_connection

    for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):

requests.packages.urllib3.exceptions.ProtocolError: ('Connection aborted.', gaierror(-2, 'Name or service not known'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "/usr/lib/python3.2/threading.py", line 740, in _bootstrap_inner

    self.run()

  File "/usr/lib/python3.2/threading.py", line 693, in run

    self._target(*self._args, **self._kwargs)

  File "/home/pi/weather_station/tinkerforge/ip_connection.py", line 812, in callback_loop

    self.dispatch_packet(data)

  File "/home/pi/weather_station/tinkerforge/ip_connection.py", line 793, in dispatch_packet

    cb(self.deserialize_data(payload, form))

  File "beebotte.py", line 88, in cb_humidity

    self.humid_resource.write(humidity/10.0)

  File "/home/pi/weather_station/beebotte/__init__.py", line 428, in write

    return self.bbt.write(self.channel, self.resource, ts = ts, data = data)

  File "/home/pi/weather_station/beebotte/__init__.py", line 287, in write

    response = self.__postData__( endpoint, json.dumps(body, separators=(',', ':')), True )

  File "/home/pi/weather_station/beebotte/__init__.py", line 169, in __postData__

    r = requests.post( url, data=data, headers=headers )

  File "/usr/local/lib/python3.2/dist-packages/requests/api.py", line 99, in post

    return request('post', url, data=data, json=json, **kwargs)

  File "/usr/local/lib/python3.2/dist-packages/requests/api.py", line 49, in request

    response = session.request(method=method, url=url, **kwargs)

  File "/usr/local/lib/python3.2/dist-packages/requests/sessions.py", line 461, in request

    resp = self.send(prep, **send_kwargs)

  File "/usr/local/lib/python3.2/dist-packages/requests/sessions.py", line 573, in send

    r = adapter.send(request, **kwargs)

  File "/usr/local/lib/python3.2/dist-packages/requests/adapters.py", line 415, in send

    raise ConnectionError(err, request=request)

requests.exceptions.ConnectionError: ('Connection aborted.', gaierror(-2, 'Name or service not known'))

Any advice would be much appreciated!

Thanks nattfoedd - I'll look into it.

However as a newbie programmer I suspect I'm not quite at the level to implement this myself.  Has anyone written python code that interacts with this site that I could look at?

I've built the weather station and wanted to post my data to a website.  Tinkerforge have python code to do this using xively.  However when I try to create an xively account I've been put on a waiting list.

Is there any alternative that a newbie pythoner would be able to implement?

Many thanks!

Problem solved - many thanks borg!

Here's the code ...

#!/usr/bin/env python

# -*- coding: utf -8 -*-

HOST="localhost"

PORT=4223

UID="ogH"

import time;

from tinkerforge.ip_connection import IPConnection

from tinkerforge.bricklet_lcd_20x4 import LCD20x4

# Callback functions for button status

def cb_pressed(i):

    print('Pressed: '+ str(i))

    BacklightON = lcd.is_backlight_on()

    print(BacklightON)

if __name__ == "__main__":

    ipcon=IPConnection()    # Create IP connection

    lcd=LCD20x4(UID,ipcon)  # Create device object

    ipcon.connect(HOST,PORT)    # Connect to brickd

    # Don't use device before ipcon is connected

    # Register button status callback to cb_pressed

    lcd.register_callback(lcd.CALLBACK_BUTTON_PRESSED,cb_pressed)

    # lcd.backlight_off()

    BacklightON = lcd.is_backlight_on()

    print(BacklightON)

    while True:

        n=0

                    # Line 0

        Line="Button 0: MAIN MENU"

        # Determine start position to be centred

        # Position=(20-len(Line))/2

        Position=0

        # Write Line 0

        lcd.write_line(0,Position,Line)

        # Line 1

        Line="Button 1: DATE/TIME"

        # Determine start position to be centred

        # Position=(20-len(Line))/2

        # Write Line 1

        lcd.write_line(1,Position,Line)

        # Line 2

        Line="Button 2: WEATHER"

        # Determine start position to be centred

        # Position=(20-len(Line))/2

        # Write Line 2

        lcd.write_line(2,Position,Line)

and here's the error message ...

>>>

False

Pressed: 0

Exception in thread Callback-Processor:

Traceback (most recent call last):

  File "/home/pi/weather_station/tinkerforge/ip_connection.py", line 938, in send_request

    response = device.response_queue.get(True, self.timeout)

  File "/usr/lib/python3.2/queue.py", line 193, in get

    raise Empty

queue.Empty

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "/usr/lib/python3.2/threading.py", line 740, in _bootstrap_inner

    self.run()

  File "/usr/lib/python3.2/threading.py", line 693, in run

    self._target(*self._args, **self._kwargs)

  File "/home/pi/weather_station/tinkerforge/ip_connection.py", line 812, in callback_loop

    self.dispatch_packet(data)

  File "/home/pi/weather_station/tinkerforge/ip_connection.py", line 793, in dispatch_packet

    cb(self.deserialize_data(payload, form))

  File "/home/pi/weather_station/test_lcd.py", line 17, in cb_pressed

    BacklightON = lcd.is_backlight_on()

  File "/home/pi/weather_station/tinkerforge/bricklet_lcd_20x4.py", line 123, in is_backlight_on

    return self.ipcon.send_request(self, BrickletLCD20x4.FUNCTION_IS_BACKLIGHT_ON, (), '', '?')

  File "/home/pi/weather_station/tinkerforge/ip_connection.py", line 947, in send_request

    raise Error(Error.TIMEOUT, msg)

tinkerforge.ip_connection.Error: -1: Did not receive response for function 5 in time

Many thanks borg.

A very new python programmer here who has built the Tinkerforge weather station connected to a Raspberry Pi.  I am starting to tinker with the Tinkerforge code and want to implement the is_backlight_on function for the LCD.  I more often than not get a timeout error when I call this function; sometimes it works but mostly not.

Any help would be appreciated for a newbie!