Using this data point that you posted earlier, I formatted it a bit to
better show the json structure.
21:54:27.154 MQT: sensors/BMP280/SENSOR =
{
"Time":"2021-05-12T21:54:27",
" BMP280":
{
"Temperature":22.0,
"Pressure":990.8
},
"PressureUnit":"hPa",
"TempUnit":"C"
}
You’ve got one topic, ‘sensors/BMP280/SENSOR’ that is publishing json data.
You’ve got four top level fields, ‘Time’, ‘BMP280’, ‘PressureUnit’, and
‘TempUnit’.
‘BMP280’ is an object consisting of two fields, ‘ Temperature’, and
‘Pressure’. I am calling this ‘nested json’. This will result in 2 fields
named ‘BMP280_Temperature’ and ‘BMP280_Pressure’.
So, your configuration should be something like this.
# The message handler to use
[[message_callback]]
# The format of the MQTT payload.
# Currently support: individual, json, keyword
# Must be specified.
type = json
# The topics to subscribe to.
[[topics]]
# Units for MQTT payloads without unit value.
# Valid values: US, METRIC, METRICWX
# Default is: US
unit_system = METRIC
[[[sensors/BMP280/SENSOR]]]
[[[[Time]]]]
ignore = true
[[[[BMP280_Temperature]]]]
# The WeeWX name.
# Default is the name from MQTT.
name = appTemp1
[[[[BMP280_Pressure]]]]
# The WeeWX name.
# Default is the name from MQTT.
name = barometer
# The incoming field name from MQTT.
[[[[PressureUnit]]]]
ignore = true
# The incoming field name from MQTT.
[[[[TemperatureUnit]]]]
ignore = true
rich
On Thursday, 13 May 2021 at 10:37:54 UTC-4 [email protected] wrote:
> I've been looking at Rich Bell's nested json example here:
> https://github.com/bellrichm/WeeWX-MQTTSubscribe/wiki/json-example
> He shows a first topic, second topic, third topic, etc.
>
> If you include the time, I think this BMP280 has 5 topics? (Time,
> Temperature, Pressure, PressureUnit, TempUnit)
> Here's what I've got now: in my weewx.conf file:
>
> # The message handler to use
> [[message_callback]]
> # The format of the MQTT payload.
> # Currently support: individual, json, keyword
> # Must be specified.
> type = json
>
> # When the json is nested, the delimiter between the hierarchies.
> # Default is _.
> flatten_delimiter = "_"
>
> # The topics to subscribe to.
> [[topics]]
> # Units for MQTT payloads without unit value.
> # Valid values: US, METRIC, METRICWX
> # Default is: US
> unit_system = METRIC
>
> use_server_datetime = True
> ignore_start_time = True
> ignore_end_time = True
>
> [[[first/topic]]]
> # The incoming field name from MQTT.
> [[[[Time]]]]
> ignore = true
>
> [[[second/topic]]]
> [[[[BME280_Temperature]]]]
> # The WeeWX name.
> # Default is the name from MQTT.
> name = appTemp1
> units = degree_C
>
> [[[[BME280_Pressure]]]]
> # The WeeWX name.
> # Default is the name from MQTT.
> name = barometer
> units = hPa
>
> [[[third/topic]]]
> # The incoming field name from MQTT.
> [[[[PressureUnit]]]]
> ignore = true
>
> [[[fourth/topic]]]
> # The incoming field name from MQTT.
> [[[[TemperatureUnit]]]]
> ignore = true
>
>
>> Op donderdag 13 mei 2021 om 05:32:15 UTC+2 schreef [email protected]:
>>
>>> Here's what I've got in my weewx.conf file thus far.
>>> Does this look close to correct, when you compare it to the MQTT message
>>> from the Tasmota log?
>>>
>>>
>>> 21:54:27.154 MQT: sensors/BMP280/SENSOR =
>>> {"Time":"2021-05-12T21:54:27","BMP280":{"Temperature":22.0,"Pressure":990.8},"PressureUnit":"hPa","TempUnit":"C"}
>>>
>>>
>>> ############################################################################
>>> # Options for 'MQTTSubscribeService'
>>> [MQTTSubscribeService]
>>> # This section is for the MQTTSubscribe service.
>>>
>>> # Turn the service on and off.
>>> # Default is: true
>>> # Only used by the service.
>>> enable = false
>>>
>>> # The MQTT server.
>>> # Default is localhost.
>>> host = localhost
>>>
>>> # The port to connect to.
>>> # Default is 1883.
>>> port = 1883
>>>
>>> # Maximum period in seconds allowed between communications with the
>>> broker.
>>> # Default is 60.
>>> keepalive = 60
>>>
>>> # username for broker authentication.
>>> # Default is None.
>>> username = None
>>>
>>> # password for broker authentication.
>>> # Default is None.
>>> password = None
>>>
>>> # The binding, loop or archive.
>>> # Default is: loop
>>> # Only used by the service.
>>> binding = loop
>>>
>>> # The message handler to use
>>> [[message_callback]]
>>> # The format of the MQTT payload.
>>> # Currently support: individual, json, keyword
>>> # Must be specified.
>>> type = json
>>>
>>> # When the json is nested, the delimiter between the hierarchies.
>>> # Default is _.
>>> flatten_delimiter = "_"
>>>
>>> # The topics to subscribe to.
>>> [[topics]]
>>> # Units for MQTT payloads without unit value.
>>> # Valid values: US, METRIC, METRICWX
>>> # Default is: US
>>> unit_system = METRIC
>>>
>>> [[[first/topic]]]
>>> # The incoming field name from MQTT.
>>> [[[[Time]]]]
>>> # left side is the name from MQTT.
>>> # right side is the WeeWX name.
>>> Time = dateTime
>>>
>>> [[[second/topic]]]
>>> # The incoming field name from MQTT.
>>> [[[[BME280_Temperature]]]]
>>> # left side is the name from MQTT.
>>> # right side is the WeeWX name.
>>> Temperature = extraTemp1
>>>
>>> [[[[BME280_Pressure]]]]
>>> # left side is the name from MQTT.
>>> # right side is the WeeWX name.
>>> Pressure = barometer
>>>
>>> [[[third/topic]]]
>>> # The incoming field name from MQTT.
>>> [[[[PressureUnit]]]]
>>> # left side is the name from MQTT.
>>> # right side is the WeeWX name.
>>> PressureUnit = ??
>>>
>>> [[[fourth/topic]]]
>>> # The incoming field name from MQTT.
>>> [[[[TemperatureUnit]]]]
>>> # left side is the name from MQTT.
>>> # right side is the WeeWX name.
>>> TempUnit = ??
>>>
>>> On Wednesday, May 12, 2021 at 10:05:22 PM UTC-5 Eric Koester wrote:
>>>
>>>> Maybe this line from the Tasmota Console (log) is a clue?
>>>>
>>>> 21:54:27.154 MQT: sensors/BMP280/SENSOR =
>>>> {"Time":"2021-05-12T21:54:27","BMP280":{"Temperature":22.0,"Pressure":990.8},"PressureUnit":"hPa","TempUnit":"C"}
>>>>
>>>> On Wed, May 12, 2021 at 9:54 PM Eric Koester <[email protected]>
>>>> wrote:
>>>>
>>>>> I've got a BMP280 sensor (only 2 internal sensors) connected to an
>>>>> ESP-12F module, running Tasmota firmware.
>>>>> The example I'm following is a BME280 which has 3 internal sensors.
>>>>> https://tasmota.github.io/docs/BME280/
>>>>> Rich Bell mentioned that the BME280 (and BMP280) data is json and
>>>>> nested and that the data would come through as BMP280_Temperature,
>>>>> BMP280_Pressure.
>>>>> [image: Tasmota_Main-screen_BMP280.jpg]
>>>>>
>>>>> I roughly configured the MQTT settings in Tasmota and you can see it's
>>>>> made connection with the mosquitto broker.
>>>>> section of /var/log/mosquitto/mosquitto.log file:
>>>>> *1620871934: New connection from 192.168.7.132 on port 1883.*
>>>>> *1620871934: New client connected from 192.168.7.132 as ESP-12F_1 (p2,
>>>>> c1, k30, u'ESP-12F_USER').*
>>>>> *1620872759: Saving in-memory database to
>>>>> /var/lib/mosquitto/mosquitto.db.*
>>>>>
>>>>> I'm not clear what I should set the Topic and Full Topic fields to in
>>>>> the Tasmota MQTT screen.
>>>>>
>>>>> [image: Tasmota_MQTT-settings_1.jpg]
>>>>>
>>>>>
>>>>> On Wednesday, May 12, 2021 at 6:24:46 PM UTC-5 Eric Koester wrote:
>>>>>
>>>>>> For those following along, I discovered that the mosquitto_pub &
>>>>>> mosquitto_sub clients were automatically installed when I installed
>>>>>> mosquitto into Ubuntu. Here was the tip-off:
>>>>>> *weewx@Ubuntu20-WEEWX:~$ sudo apt install mosquitto-clients*
>>>>>> *Reading package lists... Done*
>>>>>> *Building dependency tree *
>>>>>> *Reading state information... Done*
>>>>>> *mosquitto-clients is already the newest version (1.6.12-1).*
>>>>>> *0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.*
>>>>>>
>>>>>> I found some Youtube videos by Steve Cope which show examples of
>>>>>> using the commands.
>>>>>> https://youtu.be/J4pqv9__uzE
>>>>>>
>>>>>> He mentions using the debug switch (-d) so you can see that the
>>>>>> commands are doing something - very useful!
>>>>>>
>>>>>> Running mosquitto_pub in one terminal window and mosquitto_sub in
>>>>>> another is showing feedback of success!
>>>>>>
>>>>>> *weewx@Ubuntu20-WEEWX:~$ mosquitto_pub -h 192.168.7.22 -p 1883 -t
>>>>>> sensors/temperature -m "1266193804 32" -d*
>>>>>> *Client mosq-6o6U1MqsMVovfxfZta sending CONNECT*
>>>>>> *Client mosq-6o6U1MqsMVovfxfZta received CONNACK (0)*
>>>>>> *Client mosq-6o6U1MqsMVovfxfZta sending PUBLISH (d0, q0, r0, m1,
>>>>>> 'sensors/temperature', ... (13 bytes))*
>>>>>> *Client mosq-6o6U1MqsMVovfxfZta sending DISCONNECT*
>>>>>>
>>>>>> *weewx@Ubuntu20-WEEWX:/etc/mosquitto$ mosquitto_sub -h 192.168.7.22
>>>>>> -p 1883 -t sensors/temperature -d*
>>>>>> *Client mosq-VJoHFtTvE0io4OBXfe sending CONNECT*
>>>>>> *Client mosq-VJoHFtTvE0io4OBXfe received CONNACK (0)*
>>>>>> *Client mosq-VJoHFtTvE0io4OBXfe sending SUBSCRIBE (Mid: 1, Topic:
>>>>>> sensors/temperature, QoS: 0, Options: 0x00)*
>>>>>> *Client mosq-VJoHFtTvE0io4OBXfe received SUBACK*
>>>>>> *Subscribed (mid: 1): 0*
>>>>>> *Client mosq-VJoHFtTvE0io4OBXfe received PUBLISH (d0, q0, r0, m0,
>>>>>> 'sensors/temperature', ... (13 bytes))*
>>>>>> *1266193804 32*
>>>>>> *Client mosq-VJoHFtTvE0io4OBXfe sending PINGREQ*
>>>>>> *Client mosq-VJoHFtTvE0io4OBXfe received PINGRESP*
>>>>>>
>>>>>
>>>
>>>> On Wednesday, May 12, 2021 at 3:20:05 PM UTC-5 [email protected] wrote:
>>>>>>
>>>>>>> As Greg said, make sure your MQTT infrastructure is up and running
>>>>>>> correctly. Since you installed your own broker, a first check is to use
>>>>>>> mosquitto_sub and mosquitto_pub to a test topic. Once that is working,
>>>>>>> use
>>>>>>> mosquitto_sub to subscribe to the broker and topic(s) that you want
>>>>>>> MQTTSubscribe to subscribe to. This will also provide you with the MQTT
>>>>>>> message. The actual message will be useful as you configure
>>>>>>> WeeWX/MQTTSubscribe.
>>>>>>>
>>>>>>> Next read https://github.com/bellrichm/WeeWX-MQTTSubscribe/wiki.
>>>>>>> This will outline the install steps and point you to
>>>>>>> https://github.com/bellrichm/WeeWX-MQTTSubscribe/wiki/Configuring,
>>>>>>> which has the information on configuring WeeWX/MQTTSubscribe. This page
>>>>>>> will also provide you with links to configuration examples by payload
>>>>>>> ‘type’.
>>>>>>> rich
>>>>>>>
>>>>>>
>>>>>
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