JSONBufferWriter (Json Buffer Writer)

[mgcurtis]

I’m going to be passing some data between two devices, and wanted to use Json. I want to use a nested string, and i can’t figure out how to create it.

[ScruffR]

What exactly do you mean by “nested string”?

The sample code in the docs shows how to have a string nested inside a JSON object.
https://docs.particle.io/reference/device-os/firmware/photon/#jsonwriter
(in that sampel b & c are such strings)

[mgcurtis]

This would be my example of a nested string

{
  "request": {
    "type": "Zipcode",
    "query": "91321",
    "language": "en",
    "unit": "f"
  },
  "location": {
    "name": "Newhall",
    "country": "USA",
    "region": "California",
    "lat": "34.379",
    "lon": "-118.521",
    "timezone_id": "America/Los_Angeles",
    "localtime": "2021-04-06 11:56",
    "localtime_epoch": 1617710160,
    "utc_offset": "-7.0"
  },
  "current": {
    "observation_time": "06:56 PM",
    "temperature": 59,
    "weather_code": 116,
    "weather_icons": [
      "https://assets.weatherstack.com/images/wsymbols01_png_64/wsymbol_0002_sunny_intervals.png"
    ],
    "weather_descriptions": [
      "Partly cloudy"
    ],
    "wind_speed": 2,
    "wind_degree": 26,
    "wind_dir": "NNE",
    "pressure": 1014,
    "precip": 0,
    "humidity": 49,
    "cloudcover": 16,
    "feelslike": 59,
    "uv_index": 5,
    "visibility": 6,
    "is_day": "yes"
  },
  "forecast": {
    "2021-04-05": {
      "date": "2021-04-05",
      "date_epoch": 1617580800,
      "astro": {
        "sunrise": "06:35 AM",
        "sunset": "07:19 PM",
        "moonrise": "03:16 AM",
        "moonset": "01:17 PM",
        "moon_phase": "Waning Crescent",
        "moon_illumination": 34
      },
      "mintemp": 59,
      "maxtemp": 77,
      "avgtemp": 68,
      "totalsnow": 0,
      "sunhour": 11.6,
      "uv_index": 8
    }
  }
}

[mgcurtis]

or

{
  "a": {
    "inner1": 123,
    "inner2": 456
   },
 "b": {
    "Outer1": 135,
    "Outer2": 468
   }
}

[mgcurtis]

writer.beginObject();
    writer.name("a");
    writer.beginObject();
        writer.name("a1").value(1);
        writer.name("a2").value(1);
        writer.name("a3").value(1);
    writer.endObject();

    writer.name("b");
    writer.beginObject();
        writer.name("b1").value(1);
        writer.name("b2").value(1);
        writer.name("b3").value(1);
    writer.endObject();
writer.endObject();