You’ve got something working, I wouldn’t change it. But for future
searches/reference, MQTTSubscribeService does have limited caching support (
https://github.com/bellrichm/WeeWX-MQTTSubscribe/wiki/Additional-Options#expires_after
).
The primary limitation is that MQTTSubscribeService must be bound to the
NEW_ARCHIVE_RECORD event if the driver is running in ‘record_generation =
hardware’ mode. Some additional information on this limitation is here,
https://github.com/bellrichm/WeeWX-MQTTSubscribe/issues/178.
- rich
On Saturday 16 March 2024 at 04:38:29 UTC-4 Greg from Oz wrote:
> I use home automation (openHab) and the inside humidity and inside
> temperature is something I am putting into the home automation so I used
> that to resend every 2 minutes to weew mqttsubscribe. The openHab keeps the
> last data it was sent. I use JSON.stringify to make it a json data pakage.
>
> Here is the openhab code (javascript)
>
> var TOPIC="weewx"
> temperature=(items.getItem("Zigbee_temperature_bedroom_xiaomi_greg").state)
> humidity=(items.getItem("Zigbee_humidity_bedroom_xiaomi_greg").state)
> var PAYLOAD=(JSON.stringify({"humidity": humidity, "temperature":
> temperature}))
>
> result = actions.Exec.executeCommandLine(time.Duration.ofSeconds(5),
> "/usr/bin/mosquitto_pub","\-h","192.168.1.164","\-t","" + TOPIC,"\-m","" +
> PAYLOAD);
>
> console.log(JSON.stringify({"humidity": humidity, "temperature":
> temperature}))
>
>
> And here is the weew.conf part.
> # The second topic to subscribe to.
> [[[weewx]]]
> #[[[zigbee2mqtt/sensor-xiaomi-greg]]]
> ignore = true # opt out of processing fields for this topic
> by default - override per field
> [[[[temperature]]]]
> name = inTemp
>
> # True if the incoming data should not be processed into
> WeeWX.
> # Valid values: True, False
> # Default is False
> ignore = False
>
> # True if the incoming data is cumulative.
> # Valid values: True, False
> # Default is False
> contains_total = False
> [[[[humidity]]]]
> name = inHumidity
>
> # True if the incoming data should not be processed into
> WeeWX.
> # Valid values: True, False
> # Default is False
> ignore = False
>
> And here is the data that is being sent:
> {"humidity":"47.06","temperature":"23.97"}
>
> Also thanks for the link of the bme280 device I still may get one anyway.
>
> Hopefully now my graphs will look good again!
>
> Thanks again for all the ideas.
> On Saturday 16 March 2024 at 11:06:47 UTC+11 Jimi Lawson wrote:
>
>> This is the bme280 and where I got it from
>> https://shop.pimoroni.com/search?q=Adafruit%20BME280%20I2C%20or%20SPI%20Temperature%20Humidity%20Pressure%20Sensor%20-%20STEMMA%20QT
>>
>> Regards
>> Jimi
>>
>> On Friday 15 March 2024 at 23:52:57 UTC p q wrote:
>>
>>> I do it the dumb way. I have my sensors send data when they're ready. I
>>> have a service running on the weewx box that subscribes to the MQTT
>>> messages and writes them to a temp file. I modified the driver to read from
>>> the temp file. I check to see if the data is older than 20 minutes and
>>> ignore it if it is.
>>>
>>> There's probably a proper way to do this, without editing driver code.
>>>
>>> On Fri, Mar 15, 2024 at 4:18 PM Greg from Oz <[email protected]> wrote:
>>>
>>>> My bme280 only does pressure and temperature. I have it on a sonoff SV.
>>>> What bme280 are you using? Do you have a part number?
>>>> I am getting the humidity and temp from the zigbee because it is in the
>>>> house and the bme280 is in the shed and it is hot in there but I can add
>>>> one for the house I guess?
>>>> I will see if I can get the same BME280 as you are using.
>>>> Do you have info where you bought it?
>>>> Thanks
>>>>
>>>> On Saturday 16 March 2024 at 10:10:57 UTC+11 Jimi Lawson wrote:
>>>>
>>>>> What device does your station/weewx run on, couldn't you connect the
>>>>> bme280 to it and use the temp/humidity/pressure reading from it ? that's
>>>>> what I do.
>>>>>
>>>>> On Friday 15 March 2024 at 21:21:37 UTC Greg from Oz wrote:
>>>>>
>>>>>> Thanks Tom.
>>>>>>
>>>>>> Probably not something I could do. I know nothing about python.
>>>>>> Maybe later when I have time to look at it again.
>>>>>> I will see if I can find a device that transmits in regular intervals.
>>>>>>
>>>>>> On Friday 15 March 2024 at 23:55:13 UTC+11 Tom Keffer wrote:
>>>>>>
>>>>>>> You have many single data points, separated with long stretches of
>>>>>>> nulls --- no lines. That's why line_gap_fraction isn't working.
>>>>>>>
>>>>>>> By design, WeeWX drivers don't cache data. See the guidelines
>>>>>>> <https://www.weewx.com/docs/5.0/custom/drivers/#general-guidelines> for
>>>>>>> writing drivers.
>>>>>>>
>>>>>>> However, you could write a simple service that retains the last
>>>>>>> value and uses it if a null value is seen. Perhaps up to a maximum
>>>>>>> time.
>>>>>>> But, there's nothing like that in WeeWX.
>>>>>>>
>>>>>>> On Thu, Mar 14, 2024 at 6:54 PM Greg from Oz <[email protected]>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Here is a snippet of the database:
>>>>>>>> select dateTime ,inTemp, inHumidity, pressure from archive where
>>>>>>>> dateTime >= 1710459900 ;
>>>>>>>> +------------+--------+--------------------+-------------------+
>>>>>>>> | dateTime | inTemp | inHumidity | pressure |
>>>>>>>> +------------+--------+--------------------+-------------------+
>>>>>>>> | 1710459900 | 23.99 | 54.019999999999996 | 968.3500000000003 |
>>>>>>>> | 1710460200 | NULL | NULL | 968.3142857142858 |
>>>>>>>> | 1710460500 | NULL | NULL | 968.3166666666667 |
>>>>>>>> | 1710460800 | NULL | NULL | 968.2166666666667 |
>>>>>>>> | 1710461100 | NULL | NULL | 968.1583333333334 |
>>>>>>>> | 1710461400 | 24.26 | 53.23 | 968.1000000000001 |
>>>>>>>> | 1710461700 | 24.5 | 53.34 | 968.0833333333335 |
>>>>>>>> | 1710462000 | NULL | NULL | 968.1416666666668 |
>>>>>>>> | 1710462300 | NULL | NULL | 968.0916666666667 |
>>>>>>>> | 1710462600 | NULL | NULL | 968.1285714285715 |
>>>>>>>> | 1710462900 | NULL | NULL | 968.225 |
>>>>>>>> | 1710463200 | 25.01 | 52.795 | 968.1666666666666 |
>>>>>>>> | 1710463500 | NULL | NULL | 968.1083333333335 |
>>>>>>>> | 1710463800 | 25.52 | 51.754999999999995 | 968.1357142857144 |
>>>>>>>> | 1710464100 | NULL | NULL | 968.1083333333332 |
>>>>>>>> | 1710464400 | NULL | NULL | 968.0916666666667 |
>>>>>>>> | 1710464700 | NULL | NULL | 968.0083333333332 |
>>>>>>>> | 1710465000 | 25.82 | 50.49 | 968.0142857142857 |
>>>>>>>> | 1710465300 | 26.03 | 50.535 | 967.9583333333334 |
>>>>>>>> | 1710465600 | NULL | NULL | 967.8333333333335 |
>>>>>>>> | 1710465900 | NULL | NULL | 967.8000000000001 |
>>>>>>>> | 1710466200 | NULL | NULL | 967.75 |
>>>>>>>> | 1710466500 | 26.54 | 50.095 | 967.6833333333334 |
>>>>>>>> | 1710466800 | NULL | NULL | 967.6916666666666 |
>>>>>>>> | 1710467100 | NULL | NULL | 967.6999999999999 |
>>>>>>>> | 1710467400 | NULL | NULL | 967.7500000000001 |
>>>>>>>> +------------+--------+--------------------+-------------------+
>>>>>>>> 26 rows in set (0.000 sec)
>>>>>>>>
>>>>>>>> On Friday 15 March 2024 at 08:39:12 UTC+11 Tom Keffer wrote:
>>>>>>>>
>>>>>>>>> You may just have the option line_gap_fraction
>>>>>>>>> <https://www.weewx.com/docs/5.0/reference/skin-options/imagegenerator/#line_gap_fraction>
>>>>>>>>>
>>>>>>>>> set too low.
>>>>>>>>>
>>>>>>>>> On Thu, Mar 14, 2024 at 2:18 PM Greg from Oz <[email protected]>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Hi,
>>>>>>>>>> I have removed my fineoffset usb and replaced it with SDR but the
>>>>>>>>>> outside fine offset station doesn't sent inside temperature, inside
>>>>>>>>>> humidity or barometer.
>>>>>>>>>>
>>>>>>>>>> I have added a BME280 sensor and can get the barometer readings
>>>>>>>>>> every 30 seconds and that is working and graphing OK.
>>>>>>>>>>
>>>>>>>>>> I have a zigbee battery powered device that I am using to get the
>>>>>>>>>> inside temperature and inside humidity but I cannot get the graphs
>>>>>>>>>> to show
>>>>>>>>>> a solid line nor can I get the readings to consistently show on my
>>>>>>>>>> web page
>>>>>>>>>> because those readings come in a random times.
>>>>>>>>>>
>>>>>>>>>> Is there any way to make the readings "stick" until a new reading
>>>>>>>>>> is received so the graphs look right and the readings are always on
>>>>>>>>>> the web
>>>>>>>>>> page?
>>>>>>>>>>
>>>>>>>>>> Look at the inside temperature graph on my web page to see what I
>>>>>>>>>> mean:
>>>>>>>>>> https://weather.ubeaut.work/
>>>>>>>>>>
>>>>>>>>>> Thanks
>>>>>>>>>>
>>>>>>>>>> --
>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>> Google Groups "weewx-user" group.
>>>>>>>>>> To unsubscribe from this group and stop receiving emails from it,
>>>>>>>>>> send an email to [email protected].
>>>>>>>>>> To view this discussion on the web visit
>>>>>>>>>> https://groups.google.com/d/msgid/weewx-user/555c8101-8f4f-45ad-8dc7-03a7b2fbb7ean%40googlegroups.com
>>>>>>>>>>
>>>>>>>>>> <https://groups.google.com/d/msgid/weewx-user/555c8101-8f4f-45ad-8dc7-03a7b2fbb7ean%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>>>>>>>> .
>>>>>>>>>>
>>>>>>>>> --
>>>>>>>> You received this message because you are subscribed to the Google
>>>>>>>> Groups "weewx-user" group.
>>>>>>>> To unsubscribe from this group and stop receiving emails from it,
>>>>>>>> send an email to [email protected].
>>>>>>>>
>>>>>>> To view this discussion on the web visit
>>>>>>>> https://groups.google.com/d/msgid/weewx-user/53147a8b-34d0-49fa-ab86-78bf8c931029n%40googlegroups.com
>>>>>>>>
>>>>>>>> <https://groups.google.com/d/msgid/weewx-user/53147a8b-34d0-49fa-ab86-78bf8c931029n%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>>>>>> .
>>>>>>>>
>>>>>>> --
>>>> You received this message because you are subscribed to the Google
>>>> Groups "weewx-user" group.
>>>> To unsubscribe from this group and stop receiving emails from it, send
>>>> an email to [email protected].
>>>>
>>> To view this discussion on the web visit
>>>> https://groups.google.com/d/msgid/weewx-user/79dc9f68-8550-4906-a69c-c08f744a9609n%40googlegroups.com
>>>>
>>>> <https://groups.google.com/d/msgid/weewx-user/79dc9f68-8550-4906-a69c-c08f744a9609n%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>> .
>>>>
>>>
>>>
>>> --
>>> Peter Quinn
>>> (415)794-2264 <(415)%20794-2264>
>>>
>>
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