Wie nested json mit arduinojson deserialisieren?

[Alt G. (altgr)]

Davon möchte ich "Power" haben:

{"StatusSNS":{"Time":"2022-10-30T22:15:02","ENERGY":{"TotalStartTime":"2022-06-17T08:03:04","Total":283.896,"Yesterday":1.467,"Today":0.467,"Power": 0,"ApparentPower": 0,"ReactivePower": 0,"Factor":0.00,"Voltage": 0,"Current":0.000}}}

Das problem ist das ist unter ["ENERGY"] verpackt. Das übliche

error = deserializeJson(doc, payload);
pwr = doc["Power"];

geht da nicht.

Wie komm ich da ran?

[J. S. (jojos)]

https://arduinojson.org/v6/api/jsondocument/subscript/

[EAF (Gast)]

Meine Glaskugel sagt:

pwr = doc["ENERGY"]["Power"];

Alles andere würde keinen Sinn machen.

[Alt G. (altgr)]

pwr = doc["StatusSNS"]["ENERGY"]["Power"];

Ich danke für die hilfe !

Hier das nächste:

{"wifi_sta":{"connected":true,"ssid":"FSM","ip":"192.168.178.33","rssi":-55},"cloud":{"enabled":true,"connected":true},"mqtt":{"connected":false},"time":"22:23","unixtime":1667165039,"serial":194,"has_update":false,"mac":"E8DB84D32771","cfg_changed_cnt":0,"actions_stats":{"skipped":0},"relays":[{"ison":true,"has_timer":false,"timer_started":0,"timer_duration":0,"timer_remaining":0,"overpower":false,"source":"http"}],"meters":[{"power":0.68,"overpower":0.00,"is_valid":true,"timestamp":1667168639,"counters":[20.868, 0.369, 0.000],"total":46}],"inputs":[{"input":0,"event":"","event_cnt":0}],"temperature":26.73,"overtemperature":false,"tmp":{"tC":26.73,"tF":80.11, "is_valid":true},"temperature_status":"Normal","ext_sensors":{},"ext_temperature":{},"ext_humidity":{},"update":{"status":"idle","has_update":false,"new_version":"20220809-124723/v1.12-g99f7e0b","old_version":"20220809-124723/v1.12-g99f7e0b","beta_version":"20221014-091548/v1.12.1-rc1-gd2158aa"},"ram_total":51272,"ram_free":37456,"fs_size":233681,"fs_free":148592,"uptime":8531}

[EAF (Gast)]

Alt G. schrieb:
> ["StatusSNS"]

Ja, den habe ich übersehen, mich nur auf deinen Text verlassen..

[Alt G. (altgr)]

Den:

{
"wifi_sta":{"connected":true,"ssid":"FSM","ip":"192.168.178.33","rssi":-55},
"cloud":{"enabled":true,"connected":true},
"mqtt":{"connected":false},
"time":"22:08",
"unixtime":1667164089,
"serial":169,
"has_update":false,
"mac":"E8DB84D32771",
"cfg_changed_cnt":0,
"actions_stats":{"skipped":0},
"relays":[{"ison":false,"has_timer":false,"timer_started":0,"timer_duration":0,"timer_remaining":0,"overpower":false,"source":"http"}],
"meters":[{"power":0.00,"overpower":0.00,"is_valid":true,"timestamp":1667167689,"counters":[0.000, 0.000, 0.000],"total":25}],
"inputs":[{"input":0,"event":"","event_cnt":0}],
"temperature":25.89,
"overtemperature":false,
"tmp":{"tC":25.89,"tF":78.60, "is_valid":true},
"temperature_status":"Normal",
"ext_sensors":{},
"ext_temperature":{},
"ext_humidity":{},
"update":{"status":"idle","has_update":false,"new_version":"20220809-124723/v1.12-g99f7e0b","old_version":"20220809-124723/v1.12-g99f7e0b","beta_version":"20221014-091548/v1.12.1-rc1-gd2158aa"},
"ram_total":51272,
"ram_free":37264,
"fs_size":233681,
"fs_free":148592,
"uptime":7581
}

habe ich mit

pwr = doc["meters"]["power"];

geht aber nicht. Was bedeutet das [{ ?

[Alt G. (altgr)]

pwr = doc["meters"][0]["power"];

Alles klar, Danke !

Ich wünschte mir der shelly 1PM hätte einen kürzeren http zugang zum 
power wert. Der 2.5 kann das.

[Alt G. (altgr)]

Funktioniert.
So lese ich mit einem esp8266 einen shelly 1PM, einen shelly 2.5, und 
einen sonoff pow r2 aus:

enum devtype {Shelly1, Shelly251, Shelly252, SonoffPow};

String Shelly_1PM  = "192.168.178.33";
String Shelly_2p5  = "192.168.178.52";
String SonoffPowR2 = "192.168.178.41";

int http_getpow(enum devtype dev) 
{
  StaticJsonDocument<2000> doc;
  WiFiClient client;
  HTTPClient http;
  String getstr;
  int pwr;

  switch (dev)
  {
    case Shelly1:   getstr = "http://" + Shelly_1PM  + "/status";  break;
    case Shelly251: getstr = "http://" + Shelly_2p5  + "/meter/0"; break;
    case Shelly252: getstr = "http://" + Shelly_2p5  + "/meter/1"; break;
    case SonoffPow: getstr = "http://" + SonoffPowR2 + "/cm?cmnd=status%2010"; break;
  }
  if (http.begin(client, getstr)) 
  {  
    int httpCode = http.GET();
    if (httpCode > 0) 
    {
      if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) 
      {
        String payload = http.getString();
        //Serial.println(payload);
        DeserializationError error = deserializeJson(doc, payload);
        if (error) Serial.print(F("deserializeJson() failed: "));
        switch (dev)
        {
          case Shelly1  : pwr = doc["meters"][0]["power"];  break;
          case Shelly251: pwr = doc["power"]; break;
          case Shelly252: pwr = doc["power"]; break;
          case SonoffPow: pwr = doc["StatusSNS"]["ENERGY"]["Power"]; break;
        }
      }
    } 
    else Serial.printf("[HTTP] GET failed %s\n", http.errorToString(httpCode).c_str());
    http.end();
  } 
  else Serial.printf("[HTTP} Unable to connect\n");
  return pwr;
}

[Alt G. (altgr)]

Das ergibt dann sowas wie bild oben.
Das ist ertrag meiner micro-solar-WR.
Drei mal GDI und ein soyosorce (orange). Stark bewölkt.

Die spikes nach unten versteh ich nicht. Programmfehler?
Oder machen die WR zwischendurch mal pause?

[Uwe K. (ukhl)]

Alt G. schrieb:
> geht aber nicht. Was bedeutet das [{ ?

https://www.json.org/json-de.html