File content as of revision 0:640bac35614f:

/* Copyright (C) 2016,Edutech IoT Team, mbed.org, MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
 * and associated documentation files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include "TMP102.h"

#define TEMP_REG_ADDR 0x00

TMP102::TMP102(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr)
{

}

TMP102::~TMP102()
{

}


float TMP102::read_12b()
{
  const char tempRegAddr = TEMP_REG_ADDR;

  m_i2c.write(m_addr, &tempRegAddr, 1); //Pointer to the temperature register

  char reg[2] = {0,0};
  m_i2c.read(m_addr, reg, 2); //Rea

  int16_t res  = ((int8_t)reg[0] << 4) | ((uint8_t)reg[1] >> 4);

  float temp =  (float) ((float)res * 0.0625);

  return temp;
}


float TMP102::read_13b()
{
  const char tempRegAddr = TEMP_REG_ADDR;

  m_i2c.write(m_addr, &tempRegAddr, 1); //Pointer to the temperature register

  char reg[2] = {0,0};
  m_i2c.read(m_addr, reg, 2); //Rea

  int16_t res  = ((int8_t)reg[0] << 5) | ((uint8_t)reg[1] >> 3);

  float temp =  (float) ((float)res * 0.0625);

  return temp;
}