#include <Wire.h>
#include <Arduino.h>
#define Addr_SHT30 0x44
#define SDA_PIN 21   
#define SCL_PIN 22

int read_temp()
{
  unsigned int data[6];   
  Serial.begin(115200);
  Wire.begin(SDA_PIN, SCL_PIN);
  Wire.beginTransmission(Addr_SHT30);
  Wire.write(0x2C);
  Wire.write(0x06);
  Wire.endTransmission();
  delay(100);
  Wire.requestFrom(Addr_SHT30, 6);
  if (Wire.available() == 6)
  {
    data[0] = Wire.read();
    data[1] = Wire.read();
    data[2] = Wire.read();
    data[3] = Wire.read();
    data[4] = Wire.read();
    data[5] = Wire.read();
  }

  int Temp = ((((data[0] * 256.0) + data[1]) * 175) / 65535.0) - 45;
 // float Humidity = ((((data[3] * 256.0) + data[4]) * 100) / 65535.0);
 return Temp;


 // Serial.print("相对湿度：");
 // Serial.print(Humidity);
//  Serial.println(" %RH");
  Serial.print("温度：");
  Serial.print(Temp);
  Serial.println(" °C");
  delay(100);  
 /* */
}
int read_humi()
{
  unsigned int data[6];   
  Serial.begin(115200);
  Wire.begin(SDA_PIN, SCL_PIN);
  Wire.beginTransmission(Addr_SHT30);
  Wire.write(0x2C);
  Wire.write(0x06);
  Wire.endTransmission();
  delay(100);
  Wire.requestFrom(Addr_SHT30, 6);
  if (Wire.available() == 6)
  {
    data[0] = Wire.read();
    data[1] = Wire.read();
    data[2] = Wire.read();
    data[3] = Wire.read();
    data[4] = Wire.read();
    data[5] = Wire.read();
  }

  //float Temp = ((((data[0] * 256.0) + data[1]) * 175) / 65535.0) - 45;
  int Humidity = ((((data[3] * 256.0) + data[4]) * 100) / 65535.0);
  return Humidity;

/*
  Serial.print("相对湿度：");
  Serial.print(Humidity);
  Serial.println(" %RH");
  Serial.print("温度：");
  Serial.print(Temp);
  Serial.println(" °C");
  delay(1000);  
  */
}