// Display the temperature from DHT22 to TM1637 4-digit 7-segment display

#include <DHTesp.h>
#include <TM1637TinyDisplay.h>

const int sensorPin = 15;

DHTesp tempSensor;
TM1637TinyDisplay display(14, 12);

void setup()  // mandatory
{
  Serial.begin(115200);
  Serial.println("Hello, ESP32 for IoT!!");

  tempSensor.setup(sensorPin, DHTesp::DHT22);
  display.setBrightness(15);
  delay(100); // ms
}

void loop()
{
  float temperature = tempSensor.getTempAndHumidity().temperature;
  String tempString = String(temperature, 0) + "oC";

  display.showString(tempString.c_str()); // string
  delay(10);
}