Pat,
Thank you for the insight. I already understood most of what you
described, but your point that the data should be on weather/loop worked.
So changing that now the loop is activated when data arrives, but I am
getting an error about data type for dateTime.
File "/usr/bin/weewxd", line 64, in <module>
weewx.engine.main(options, args)
File "/usr/share/weewx/weewx/engine.py", line 877, in main
engine.run()
File "/usr/share/weewx/weewx/engine.py", line 191, in run
self.dispatchEvent(weewx.Event(weewx.NEW_LOOP_PACKET, packet=packet))
File "/usr/share/weewx/weewx/engine.py", line 224, in dispatchEvent
callback(event)
File "/usr/share/weewx/weewx/wxservices.py", line 45, in new_loop_packet
self.calc.do_calculations(event.packet, 'loop')
File "/usr/share/weewx/weewx/wxservices.py", line 191, in do_calculations
getattr(self, 'calc_' + obs)(data_us, data_type)
File "/usr/share/weewx/weewx/wxservices.py", line 300, in calc_maxSolarRad
data['dateTime'], self.atc)
KeyError: 'dateTime'
I suspect the driver reads it in as a REAL number, not an integer. I'll
dig into that a bit further and report back.
On Saturday, 8 September 2018 15:53:02 UTC-7, Pat wrote:
>
> Hi Louis, I don't have any specific experience with wxMesh, but maybe I
> can help a little with MQTT.
>
> In general, the # in a topic ID means "I want to see everything in this
> topic". This is good for debugging, but typically bad practice for anything
> else. For example if my broker is available to the public and anonymous
> users can publish (hopefully you're using an ACL if your broker is publicly
> available!), then they can post to weather/hello, or weather/mywebsite,
> etc. and your driver will ingest everything on weather because you're
> subscribed to weather/#.
>
> Depending on your weewx.conf configuration, your data is probably on
> weather/loop. Try to subscribe to that in your mosquitto_sub client to
> verify.
>
> Also, my guess would be you want aggregate since that will put all
> observations in 1 published message, as opposed to individual topics like
> weather/outTemp, weather/humidity, weather/barometer, etc.
>
> Hope this helps a little bit.
>
>
> On Saturday, September 8, 2018 at 5:51:02 PM UTC-4, Louis De Lange wrote:
>>
>> I have a remote site that I want to connect to my home network using
>> MQTT and utilize minimal data transfer.
>>
>> The plan is to have weewx on one Raspberry Pi Zero at the remote site
>> receiving the data from the weather station, archive it and publish to a
>> MQTT broker using mwall's MQTT uploader. The MQTT broker will be
>> Mosquitto running on my home network. Finally, I want to have another
>> instance of weewx running on a raspberry pi on my home network using Bill
>> Morrow's MQTT driver as input.
>>
>> Right now I am trying to test the arrangement using multiple PI's on my
>> home network in a simulation.
>>
>> I am able to successfully publish the data from my local station to the
>> MQTT broker running on a different PI, and subscribe to it with mosquitto
>> tool mosquitto-sub - so we know publishing works..
>>
>> Where things fall apart is that I cannot get Bill Morrow's MQTT driver
>> tor work. Weewx starts OK, but it just waits for an archive loop and
>> nothing else happens.
>>
>> The following is the log output from starting weewx.
>>
>> Sep 08 14:37:12 testpi systemd[1]: Starting LSB: weewx weather system...
>> Sep 08 14:37:13 testpi weewx[21197]: engine: Initializing weewx version
>> 3.8.2
>> Sep 08 14:37:13 testpi weewx[21197]: engine: Using Python 2.7.13
>> (default, Nov 24 2017, 17:33:09)
>> [GCC 6.3.0 20170516]
>> Sep 08 14:37:13 testpi weewx[21197]: engine: Platform
>> Linux-4.14.50+-armv6l-with-debian-9.4
>> Sep 08 14:37:13 testpi weewx[21197]: engine: Locale is 'en_CA.UTF-8'
>> Sep 08 14:37:13 testpi weewx[21197]: engine: pid file is
>> /var/run/weewx.pid
>> Sep 08 14:37:13 testpi weewx[21186]: Starting weewx weather system: weewx.
>> Sep 08 14:37:13 testpi systemd[1]: Started LSB: weewx weather system.
>> Sep 08 14:37:13 testpi weewx[21201]: engine: Using configuration file
>> /etc/weewx/weewx.conf
>> Sep 08 14:37:13 testpi weewx[21201]: engine: Loading station type wxMesh
>> (user.wxMesh)
>> Sep 08 14:37:14 testpi weewx[21201]: wxMesh: MQTT host is localhost
>> Sep 08 14:37:14 testpi weewx[21201]: wxMesh: MQTT topic is weather
>> Sep 08 14:37:14 testpi weewx[21201]: wxMesh: MQTT client is wxclient
>> Sep 08 14:37:14 testpi weewx[21201]: wxMesh: polling interval is 1.0
>> Sep 08 14:37:14 testpi weewx[21201]: wxMesh: label map is {'dateTime':
>> 'dateTime', 'outTemp': 'outTemp', 'outHumidity': 'outHumidity', 'inTemp':
>> 'inTemp', 'i
>> Sep 08 14:37:14 testpi weewx[21201]: engine: StdConvert target unit is 0x1
>> Sep 08 14:37:14 testpi weewx[21201]: wxcalculate: The following values
>> will be calculated: barometer=prefer_hardware, windchill=prefer_hardware,
>> dewpoint=pre
>> Sep 08 14:37:14 testpi weewx[21201]: wxcalculate: The following
>> algorithms will be used for calculations: altimeter=aaNOAA, maxSolarRad=RS
>> Sep 08 14:37:14 testpi weewx[21201]: engine: Archive will use data
>> binding wx_binding
>> Sep 08 14:37:14 testpi weewx[21201]: engine: Record generation will be
>> attempted in 'hardware'
>> Sep 08 14:37:14 testpi weewx[21201]: engine: Using archive interval of
>> 300 seconds (specified in weewx configuration)
>> Sep 08 14:37:14 testpi weewx[21201]: engine: Using binding 'wx_binding'
>> to database 'weewx.sdb'
>> Sep 08 14:37:14 testpi weewx[21201]: manager: Starting backfill of daily
>> summaries
>> Sep 08 14:37:14 testpi weewx[21201]: restx: StationRegistry: Registration
>> not requested.
>> Sep 08 14:37:14 testpi weewx[21201]: restx: Wunderground: Posting not
>> enabled.
>> Sep 08 14:37:14 testpi weewx[21201]: restx: PWSweather: Posting not
>> enabled.
>> Sep 08 14:37:14 testpi weewx[21201]: restx: CWOP: Posting not enabled.
>> Sep 08 14:37:14 testpi weewx[21201]: restx: WOW: Posting not enabled.
>> Sep 08 14:37:14 testpi weewx[21201]: restx: AWEKAS: Posting not enabled.
>> Sep 08 14:37:14 testpi weewx[21201]: restx: MQTT: service version is 0.18
>> Sep 08 14:37:14 testpi weewx[21201]: engine: Starting up weewx version
>> 3.8.2
>> Sep 08 14:37:14 testpi weewx[21201]: engine: Starting main packet loop.
>>
>>
>>
>> The following is the wxMesh section of the weewx.conf file.
>>
>> [wxMesh]
>> driver = user.wxMesh
>>
>> # MQTT specifics
>> host = localhost # MQTT broker hostname
>> username = XXXXXXX # MQTT broker user name. Assumption is your
>> broker requires authentication
>> password = XXXXXXXX
>> topic = weather # topic is all weather (indoor and outdoor, e.g.)
>>
>> poll_interval = 1
>>
>> [[label_map]]
>> dateTime = dateTime
>> outTemp = outTemp
>> outHumidity = outHumidity
>> inTemp = inTemp
>> inHumidity = inHumidity
>> barometer = barometer
>>
>>
>> I am not sure about the following things in the wxMesh section of the
>> weewx.conf file
>>
>> 1. Is the topic "weather" correct? When I subscribe to the feed using
>> mosquitto-sub the correct syntax is "weather/#"
>> 2. In the MQTT uploader I can select "individual" or "aggregate" records
>> to upload. What does the MQTT input driver expect?
>>
>>
>> Any help from Bill or anyone else would be appreciated.
>>
>> Louis
>>
>
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