Bob,
You are correct. The extra data is causing the problem. Due to a poor early
design decision, MQTTSubscribe defaults to converting everything to float.
Obviously, 'report_telemetry' cannot be converted to float. The following
configuration should work. It ignores all but 'CO2_Value_PPM'.
[[topics]]
[[[mytopic]]]
ignore = true
[[[[CO2_Value_PPM]]]]
name = co2
ignore = false
If that doesn't work, let me know and I can give a different configuration.
rich
On Monday, 29 November 2021 at 19:53:46 UTC-5 [email protected] wrote:
> Last post of the day, I promise!
> I think the node-red flow is working the way it should and reporting the
> parsed message as in my last post.
>
> weewx.conf configuration (changed topic to "mytopic" in the flow and in
> weewx).
>
> [MQTTSubscribeService]
> # This section is for the MQTTSubscribe service.
> enable = true # false
>
> # The MQTT server.
> # Default is localhost.
> host = localhost
> port = 1883
> keepalive = 60
>
> username = None #admin #None
> password = None #admin #None
> binding = loop
>
> [[message_callback]]
> type = json #REPLACE_ME
>
> # mytopic is the topic to subscribe to.
> [[topics]]
>
> unit_system = US
>
> [[[mytopic]]]
>
> #data sent from RAK7244
> #ignore = true
> [[[[CO2_Value_PPM]]]]
> #weewx db field name
> name = co2
> ignore = false
> contains total = false
> conversion type = float
> #units = ppm
> #[[[SECOND/REPLACE_ME]]]
>
> *This is the weewx.log debug info:*
>
> Nov 29 19:20:58 n4mrv weewx[17143] DEBUG user.MQTTSubscribe: (Service)
> MessageCallbackProvider data-> incoming topic: mytopic, QOS: 0, retain: 0,
> payload: b'{\n "CO2_Value_PPM": 419,\n "measurementId": 4100,\n
> "type": "report_telemetry"\n}'
> Nov 29 19:20:58 n4mrv weewx[17143] ERROR user.MQTTSubscribe: (Service)
> MessageCallbackProvider on_message_json failed with <class
> 'user.MQTTSubscribe.ConversionError'> and reason Failed converting field
> type with value report_telemetry using 'lambda x: to_float(x)' with reason
> could not convert string to float: 'report_telemetry'..
> Nov 29 19:20:58 n4mrv weewx[17143] ERROR user.MQTTSubscribe: (Service)
> **** MessageCallbackProvider Ignoring topic=mytopic and payload=b'{\n
> "CO2_Value_PPM": 419,\n "measurementId": 4100,\n "type":
> "report_telemetry"\n}'
> Nov 29 19:20:58 n4mrv weewx[17143] ERROR user.MQTTSubscribe: (Service)
> **** MessageCallbackProvider Traceback (most recent call last):#012 File
> "/home/weewx/bin/user/MQTTSubscribe.py", line 1263, in _convert_value#012
> return conversion_func['compiled'](value)#012 File "<string>", line 1, in
> <lambda>#012 File "/home/weewx/bin/weeutil/weeutil.py", line 1276, in
> to_float#012 return float(x) if x is not None else None#012ValueError:
> could not convert string to float: 'report_telemetry'#012#012During
> handling of the above exception, another exception
> occurred:#012#012Traceback (most recent call last):#012 File
> "/home/weewx/bin/user/MQTTSubscribe.py", line 1427, in _on_message_json#012
> (fieldname, value) = self._update_data(fields, fields_conversion_func,
> lookup_key, data_flattened[key], unit_system)#012 File
> "/home/weewx/bin/user/MQTTSubscribe.py", line 1230, in _update_data#012
> value = self._convert_value(fields, default_field_conversion_func,
> orig_name, orig_value)#012 File "/home/weewx/bin/user/MQTTSubscribe.py",
> line 1268, in _convert_value#012 raise ConversionError("Failed
> converting field %s with value %s using '%s' with reason %s."
> \#012user.MQTTSubscribe.ConversionError: Failed converting field type with
> value report_telemetry using 'lambda x: to_float(x)' with reason could not
> convert string to float: 'report_telemetry'.
> Nov 29 19:20:59 n4mrv weewx[17143] DEBUG user.purple:
> new_loop_packet(Event type: <class 'weewx.NEW_LOOP_PACKET'> | packet:
> {'dateTime': 1638231660, 'usUnits': 1, 'barometer': 30.091, 'inTemp': 79.0,
> 'inHumidity': 27.0, 'outTemp': 33.7, 'windSpeed': 0.0, 'windSpeed10': 0.0,
> 'windDir': 0, 'extraTemp1': 72.0, 'soilTemp1': 51.0, 'soilTemp2': 97.0,
> 'soilTemp4': 47.0, 'leafTemp1': 51.0, 'leafTemp2': 97.0, 'outHumidity':
> 74.0, 'rainRate': 0.0, 'UV': 0.0, 'radiation': 0.0, 'stormRain': 0.0,
> 'dayRain': 0.0, 'monthRain': 0.6, 'yearRain': 41.65, 'dayET': 0.051,
> 'monthET': 1.15, 'yearET': 24.95, 'leafWet4': 0.0, 'insideAlarm': 0,
> 'rainAlarm': 0, 'outsideAlarm1': 0, 'outsideAlarm2': 0, 'extraAlarm1': 0,
> 'extraAlarm2': 0, 'extraAlarm3': 0, 'extraAlarm4': 0, 'extraAlarm5': 0,
> 'extraAlarm6': 0, 'extraAlarm7': 0, 'extraAlarm8': 0, 'soilLeafAlarm1': 0,
> 'soilLeafAlarm2': 0, 'soilLeafAlarm3': 0, 'soilLeafAlarm4': 0,
> 'txBatteryStatus': 0, 'consBatteryVoltage': 4.72, 'forecastIcon': 6,
> 'forecastRule': 44, 'sunrise': 1638187560, 'sunset': 1638222720, 'rain':
> 0.0, 'windGust': 0.0, 'windGustDir': None})
> Nov 29 19:20:59 n4mrv weewx[17143] DEBUG user.purple: new_loop_packet:
> self.cfg.concentrations: Concentrations(timestamp=1638231655, pm1_0=4.425,
> pm10_0=6.5649999999999995, pm2_5_cf_1=5.39, pm2_5_cf_1_b=7.39,
> current_temp_f=42, current_humidity=45)
> Nov 29 19:20:59 n4mrv weewx[17143] DEBUG user.purple: Time of reading
> being inserted: 2021-11-29 19:20:55 EST (1638231655)
> Nov 29 19:20:59 n4mrv weewx[17143] DEBUG user.purple: Inserted
> packet[pm1_0]: 4.425000 into packet.
> Nov 29 19:20:59 n4mrv weewx[17143] DEBUG user.purple: Inserted
> packet[pm2_5]: 4.534270 into packet.
> Nov 29 19:20:59 n4mrv weewx[17143] DEBUG user.purple: Inserted
> packet[pm10_0]: 6.565000 into packet.
> Nov 29 19:20:59 n4mrv weewx[17143] DEBUG user.MQTTSubscribe: (Service)
> data-> final packet is 2021-11-29 19:21:00 EST (1638231660): barometer:
> 30.091, consBatteryVoltage: 4.72, dateTime: 1638231660, dayET: 0.051,
> dayRain: 0.0, extraAlarm1: 0, extraAlarm2: 0, extraAlarm3: 0, extraAlarm4:
> 0, extraAlarm5: 0, extraAlarm6: 0, extraAlarm7: 0, extraAlarm8: 0,
> extraTemp1: 72.0, forecastIcon: 6, forecastRule: 44, inHumidity: 27.0,
> insideAlarm: 0, inTemp: 79.0, leafTemp1: 51.0, leafTemp2: 97.0, leafWet4:
> 0.0, monthET: 1.15, monthRain: 0.6, outHumidity: 74.0, outsideAlarm1: 0,
> outsideAlarm2: 0, outTemp: 33.7, pm1_0: 4.425, pm10_0: 6.5649999999999995,
> pm2_5: 4.53427, pm2_5_aqi: 18.75, pm2_5_aqi_color: 32768, radiation: 0.0,
> rain: 0.0, rainAlarm: 0, rainRate: 0.0, soilLeafAlarm1: 0, soilLeafAlarm2:
> 0, soilLeafAlarm3: 0, soilLeafAlarm4: 0, soilTemp1: 51.0, soilTemp2: 97.0,
> soilTemp4: 47.0, stormRain: 0.0, sunrise: 1638187560, sunset: 1638222720,
> txBatteryStatus: 0, usUnits: 1, UV: 0.0, windDir: 0, windGust: 0.0,
> windGustDir: None, windSpeed: 0.0, windSpeed10: 0.0, yearET: 24.95,
> yearRain: 41.65
>
> It seems that there is something wrong with the format coming into weewx
> from the flow. It may be confused by the other two
> elements "measurementId": 4100, and "type": "report_telemetry" which cause
> the whole thing to fail. Is it possible to have weewx ignore these elements
> and only process the "CO2_Value_PPM": 419 ? I'm not sure what "float" does
> but mayve that's a problem...?
> Thanks again and I'll have another look tomorrow.
> Cheers,
> Bob
> On Monday, November 29, 2021 at 5:38:37 PM UTC-5 vince wrote:
>
>> On Monday, November 29, 2021 at 2:05:05 PM UTC-8 [email protected] wrote:
>>
>>> I removed the function and it looks better. Last debug going into
>>> mqtt_publish:
>>>
>>> 11/29/2021, 4:17:17 PMnode: mqtt_payload
>>> <http://localhost:1880/#>application/18/device/2cf7f12122500013/rx
>>> : msg.payload : string[87]
>>> string[87]
>>> { "CO2_Value_PPM": 399, "measurementId": 4100, "type":
>>> "report_telemetry" }
>>> <http://localhost:1880/#>
>>>
>>> However, weewx still doesn't seem to like it. I'll try changing topics
>>> to "mytopic" and see what happens.
>>>
>>
>> Sigh - just set the topic in weewx.conf to whatever you are publishing
>> via node-red, and reset weewx.
>> Until you do that, it's not going to work.
>>
>> It does not matter what topic you publish to, just keep your naming
>> consistent and theoretically relevant so you can figure it out a year from
>> now when you want to decipher what the heck you did :-)
>>
>>
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