#include <ArduinoJson.h>


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");


  float t = 22.2;
  float h = 55.5;

  // char out[50];
  // sprintf(out, "{\"temperature\":%.1f,\"humidity\":%.1f}", t, h);

  JsonDocument doc;
  doc["temperature"] = serialized(String(t,1));
  doc["humidity"] = serialized(String(h,1));

  char saida[sizeof(doc)];
  serializeJson(doc, saida);
  Serial.println(saida);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}