Smartmeter/Power reading from JSON Tasmota SML

[johkn]

Is it possible read the power from JSON

example JSON

Leistung = power

{
   "StatusSNS" : {
      "Gas" : {
         "Verbrauch" : 2342.45
      },
      "SML" : {
         "Einspeisung" : 0.118,
         "Frequenz" : 49.9,
         "Leistung" : 589,
         "Spannung L1" : 230.4,
         "Spannung L2" : 229.9,
         "Spannung L3" : 230.6,
         "Strom L1" : 1.51,
         "Strom L2" : 0.42,
         "Strom L3" : 1.12,
         "Verbrauch" : 10722.5
      },
      "Time" : "2023-06-01T00:10:41"
   }
}

Thanks

[syssi]

This is the JSON payload of a MQTT message, correct?

[johkn]

same format

http request: http://ip/cm?cmnd=status+10

Tasmota Wiki https://tasmota.github.io/docs/JSON-Status-Responses/

[syssi]

If it's HTTP you could adapt this example: https://github.com/syssi/esphome-soyosource-gtn-virtual-meter/blob/main/powermeter-sensor-examples/shelly-3em-http-status-json.yaml

Instead accessing the total_power key at the root line you would respect the structure of your payload:

https://github.com/syssi/esphome-soyosource-gtn-virtual-meter/blob/main/powermeter-sensor-examples/shelly-3em-http-status-json.yaml#LL32C1-L32C73

It should look something like this:

substitutions:
  shelly_3em_url: "http://ip/cm?cmnd=status+10"

http_request:
  id: http_request0
  useragent: esphome/device
  timeout: 1000ms

sensor:
  - platform: template
    id: powermeter
    name: "Instantaneous Power"
    unit_of_measurement: W
    device_class: "power"
    accuracy_decimals: 2
    update_interval: never

interval:
  - interval: 1100ms
    then:
      - http_request.get:
          url: ${shelly_3em_url}
          headers:
            Content-Type: application/json
          verify_ssl: false
          on_response:
            then:
              - lambda: |-
                  std::string response_data = id(http_request0).get_string();
                  if(!response_data.empty()) {
                    json::parse_json(response_data, [](JsonObject root) {
                      id(powermeter).publish_state(root["StatusSNS"]["SML"]["Leistung"]);
                    });
                  }

[johkn]

thanks!!!

first test: works fine
I will test it and report
next step: original wifi dongle for monitoring and control (limiter)