This is how the data is constructed and sent in Arduino, it's sent as a
complete line of ascii data
// ----- AQI Data for Weewx -----
Data = F("AQI25=");
Data += String(AQI_Monitor.AQI_PM2_5 / 10.0);
Data += F(",AQI100=");
Data += String(AQI_Monitor.AQI_PM10_0 / 10.0);
Data += F(",AQIIndex=");
Data += String(AQI_Monitor.AQI_Index / 10);
Data += F(",AQICO2=");
Data += String(AQI_Monitor.GAS_1);
Then sent using
// -------- Send AQI Datapacket ------------
udp1.beginPacket(broadcastIP, AQI_BROADCAST_PORT);
udp1.write((const uint8_t*)Data.c_str(), strlen(Data.c_str()));
udp1.endPacket();
udp1.stop();
So I'm unsure how to get line feeds in there instead of the comma delimiter.
Seems it would be easier to look for the comma in the txt file :)
Cheers
Colin
On Wed, Apr 24, 2019 at 7:31 AM Colin Larsen <[email protected]> wrote:
> Ok that sure looks like it would do the job but with my file format I
> would need to use "," as a delimiter between records rather than a new line
> something like (borrowed from another similar utility). I have never done
> Python so I'm a little lost on how to change this sorry
>
> with open(self.filename) as f:
> for line,row in enumerate(f.readlines()):
> if line == 0:
> names = row.strip().split(",")
> if line == 0:
> units = row.strip().split(",")
>
>
>
>
>
>
>
> On Wed, Apr 24, 2019 at 1:40 AM Thomas Keffer <[email protected]> wrote:
>
>> Because of the syntax, it's tempting to look at a ConfigObj file and
>> think of it as assigning the right hand side to the left hand side. But,
>> it's really not. It's a mapping. The left hand side *maps to* the right
>> hand side.
>>
>> As a key:value comes in from the file, we need to know what to do with
>> the key. Given a key, what WeeWX name do we assign it to? With a mapping,
>> we look it up, then do the assignment to the value. If we did it the other
>> way around, we'd have to search all the *values* in the mapping to find
>> what it should be mapped to. That's backwards from the way dictionaries
>> work.
>>
>> -tk
>>
>> On Tue, Apr 23, 2019 at 5:51 AM Andrew Milner <
>> [email protected]> wrote:
>>
>>> Tom
>>> Forgive me for being a pedant - but shouldn't the label map for filepile
>>> have the arguments the other way round
>>> ie rather than
>>> myVoltage = Supply Voltage
>>> it should be
>>> SupplyVoltage = myVoltage
>>> ie
>>> weewx destination field = source data field
>>>
>>> normally left of equals sign is the result of operations right of equals
>>> sign
>>> eg
>>> a = 3 + 2 would put 5 into a
>>>
>>>
>>>
>>> On Tuesday, 23 April 2019 14:45:38 UTC+3, Thomas Keffer wrote:
>>>>
>>>> Take a look at Filepile <https://github.com/tkeffer/filepile>. It may
>>>> do what you want, or help you write your own.
>>>>
>>>> -tk
>>>>
>>>> On Mon, Apr 22, 2019 at 7:43 PM <[email protected]> wrote:
>>>>
>>>>> Hi all
>>>>>
>>>>> I have devised a method to export my Air Quality Data (AQI) from my
>>>>> Arduino based weather station to Weewx (it can't be sent via the usb port
>>>>> with the rest of the data). It involves sending the data via a UDP
>>>>> broadcast packet from the station, this is then captured by a small Python
>>>>> script on my Weewx Pi and written to a txt file.
>>>>>
>>>>> The txt file data looks like this
>>>>> AQI25=5.50,AQI100=4.10,AQIIndex=22,AQICO2=967
>>>>>
>>>>> From the Weewx wiki I have crafted the beginning of a service to
>>>>> import the data to my Wewwx database (extended with the 4 new data fields)
>>>>> but I'm not sure how to complete that task. So far I have this, which I
>>>>> think will grab the first value - how do I parse the other 3? Is it as
>>>>> simple as just adding more lines such as event.record['AQI100'] =
>>>>> float(value) etc?
>>>>>
>>>>> *import* syslog
>>>>>
>>>>> *import* weewx
>>>>>
>>>>> *from* weewx.wxengine *import* StdService
>>>>>
>>>>>
>>>>> *class* WDAQIService(StdService):
>>>>>
>>>>> *def** __init__*(self, engine, config_dict):
>>>>>
>>>>> super(WDAQIService, self).__init__(engine, config_dict)
>>>>>
>>>>> d = config_dict.get(*'WDAQIService'*, {})
>>>>>
>>>>> self.filename = d.get(*'filename'*, *'/home/pi/AQIData.txt'*)
>>>>>
>>>>> syslog.syslog(syslog.LOG_INFO, *"WDAQIImport: using %s"* %
>>>>> self.filename)
>>>>>
>>>>> self.bind(weewx.NEW_ARCHIVE_RECORD, self.read_file)
>>>>>
>>>>>
>>>>> *def** read_file*(self, event):
>>>>>
>>>>> *try*:
>>>>>
>>>>> *with* open(self.filename) *as* f:
>>>>>
>>>>> value = f.read()
>>>>>
>>>>> syslog.syslog(syslog.LOG_DEBUG, *"WDAQIImport: found
>>>>> value of %s"* % value)
>>>>>
>>>>> event.record[*'AQI25'*] = float(value)
>>>>>
>>>>> *except* Exception *as* e:
>>>>>
>>>>> syslog.syslog(syslog.LOG_ERR, *"WDAQIImport: cannot read
>>>>> value: %s"* % e)
>>>>>
>>>>> Thanks
>>>>> Colin
>>>>>
>>>>> --
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>>>>>
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>
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