new version of EspEasy change json of dht22

[megamarco83]

hi, on the old version of espeasy i had:

Code: Select all

pi@raspberrypi:~ $ curl -s http://192.168.0.198/json?tasknr=2
{
"TaskName": "dht22",
"Temperature": 24.10,
"Humidity": 55.30

now with the new one:

Code: Select all

pi@raspberrypi:~ $ curl -s http://192.168.0.198/json?tasknr=2
{
"TaskValues": [
{"ValueNumber":1,
"Name":"Temperature",
"NrDecimals":2,
"Value":24.10
},
{"ValueNumber":2,
"Name":"Humidity",
"NrDecimals":2,
"Value":55.30
}],
"TTL":60000,
"DataAcquisition": [
{"Controller":1,
"IDX":21,
"Enabled":"true"
},
{"Controller":2,
"IDX":0,
"Enabled":"false"
},
{"Controller":3,
"IDX":0,
"Enabled":"false"
}],
"TaskInterval":60,
"Type":"Environment - DHT11/12/22  SONOFF2301/7021",
"TaskName":"dht22",
"TaskEnabled":"true",
"TaskNumber":2
}

i need to take value of Temperature end Humidity using php
on previus version was quite easy:

Code: Select all

} elseif ($argv[1] == 'esp_dht22_temp_primo_piano') {
         $url = 'http://192.168.0.198/json?tasknr=2';
         $pagina = file_get_contents($url);
         $json_output = json_decode($pagina, true);
         $outstr = $json_output['Temperature'];
         $outstr = "18($outstr*°C)";        
     } elseif ($argv[1] == 'esp_dht22_umid_primo_piano') {
         $url = 'http://192.168.0.198/json?tasknr=2';
         $pagina = file_get_contents($url);
         $json_output = json_decode($pagina, true);
         $outstr = $json_output['Humidity'];
         $outstr = "19($outstr*%)";  

now that the value are "mixed" and has the same name ("value" for both temperature and humidity) how i can take only the value and biuld an output like this:

18(TEMP_VALUE*°C)
and
19(HUM_VALUE*%)
where i have to subtitute TEMP_VALUE with the numerical output
18(24.1*°C)
19(55.4*%)

[grovkillen]

Yes we are now using correct JSON path. A variable should never be used in a JSON path since a parser cannot parse through it generically. So this is how it's gonna look like from now on.

You should be able to use JSON for your php script but instead of hardcoded path names you should parse it. That way you can use the same script for all your nodes and changing a name will not break the script.

[megamarco83]

Yes we are now using correct JSON path. A variable should never be used in a JSON path since a parser cannot parse through it generically. So this is how it's gonna look like from now on.

You should be able to use JSON for your php script but instead of hardcoded path names you should parse it. That way you can use the same script for all your nodes and changing a name will not break the script.

hi grovekillen thanks so mutch as well
i'm beginner as program language, could you give me a php example where you show how to parse the temperature and humidity ?
thanks

[grovkillen]

I'm using JavaScript myself (but plan to learn php) so I have not the knowledge of how to do it in detail but here's a starting point: https://www.w3schools.com/js/js_json_php.asp