ESP32_OSC_IMU/lib/M5Stack/examples/Unit/ENVII_SHT30_BMP280/SHT3X.cpp

#include "SHT3X.h"

/* Motor()

*/
SHT3X::SHT3X(uint8_t address)
{
  Wire.begin();
  _address=address;
}



byte SHT3X::get()
{
  unsigned int data[6];

  // Start I2C Transmission
  Wire.beginTransmission(_address);
  // Send measurement command
  Wire.write(0x2C);
  Wire.write(0x06);
  // Stop I2C transmission
  if (Wire.endTransmission()!=0) 
    return 1;  

  delay(500);

  // Request 6 bytes of data
  Wire.requestFrom(_address, 6);

  // Read 6 bytes of data
  // cTemp msb, cTemp lsb, cTemp crc, humidity msb, humidity lsb, humidity crc
  for (int i=0;i<6;i++) {
    data[i]=Wire.read();
  };
  
  delay(50);
  
  if (Wire.available()!=0) 
    return 2;

  // Convert the data
  cTemp = ((((data[0] * 256.0) + data[1]) * 175) / 65535.0) - 45;
  fTemp = (cTemp * 1.8) + 32;
  humidity = ((((data[3] * 256.0) + data[4]) * 100) / 65535.0);

  return 0;
}