File content as of revision 7:94fa5b72481d:

///*******************************************************************************
// * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
// *
// * 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 MAXIM INTEGRATED 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.
// *
// * Except as contained in this notice, the name of Maxim Integrated
// * Products, Inc. shall not be used except as stated in the Maxim Integrated
// * Products, Inc. Branding Policy.
// *
// * The mere transfer of this software does not imply any licenses
// * of trade secrets, proprietary technology, copyrights, patents,
// * trademarks, maskwork rights, or any other form of intellectual
// * property whatsoever. Maxim Integrated Products, Inc. retains all
// * ownership rights.
// *******************************************************************************
// */
// 
// 
//#include "MAX30205.h"
//
//
////******************************************************************************
//MAX30205::MAX30205(I2C &i2c, uint8_t slaveAddress): 
//m_i2c(i2c), m_writeAddress(slaveAddress << 1), 
//m_readAddress((slaveAddress << 1) | 1)
//{
//}
//
//
////******************************************************************************
//MAX30205::~MAX30205(void) 
//{
//  //empty block
//}
//
//
////******************************************************************************
//int32_t MAX30205::readTemperature(uint16_t &value) 
//{
//  return readRegister(MAX30205::Temperature, value);
//
//}
//
//
////******************************************************************************
//int32_t MAX30205::readConfiguration(Configuration_u &config)
//{
//    uint16_t data;
//    
//    int32_t result = readRegister(MAX30205::Configuration, data);
//    if(result == 0)
//    {
//        config.all = (0x00FF & data);
//    }
//    
//    return result;
//    
//}
//
//
////******************************************************************************    
//int32_t MAX30205::writeConfiguration(const Configuration_u config)
//{
//    uint16_t local_config = (0x00FF & config.all);
//    
//    return writeRegister(MAX30205::Configuration, local_config);
//}
//
//
////******************************************************************************
//int32_t MAX30205::readTHYST(uint16_t &value) 
//{
//  return readRegister(MAX30205::THYST, value);
//}
//
//
////******************************************************************************
//int32_t MAX30205::writeTHYST(uint16_t value) 
//{
//  return writeRegister(MAX30205::THYST, value);
//}
//
//
////******************************************************************************
//int32_t MAX30205::readTOS(uint16_t &value)
//{
//    return readRegister(MAX30205::TOS, value);
//}
//
//
////******************************************************************************
//int32_t MAX30205::writeTOS(const uint16_t value)
//{
//    return writeRegister(MAX30205::TOS, value);
//}
//
//
////******************************************************************************
//float MAX30205::toCelsius(uint32_t rawTemp) 
//{
//  uint8_t val1, val2;
//  float result;
//  
//  val1 = (rawTemp >> 8);
//  val2 = (rawTemp & 0xFF);
//  
//  result = static_cast<float>(val1 + (val2/ 256.0F));
//  
//  return result;
//}
//
//
////******************************************************************************
//float MAX30205::toFahrenheit(float temperatureC) 
//{
//  return((temperatureC * 1.8F) + 32.0f);
//}
//
//
////******************************************************************************
//int32_t MAX30205::writeRegister(Registers_e reg, uint16_t value) 
//{
//  int32_t result;
//  
//  uint8_t hi = ((value >> 8) & 0xFF);
//  uint8_t lo = (value & 0xFF);
//  char cmdData[3] = {reg, hi, lo};
//  
//  result = m_i2c.write(m_writeAddress, cmdData, 3);
//  
//  return result;
//}
//
//
////******************************************************************************
//int32_t MAX30205::readRegister(Registers_e reg, uint16_t &value) 
//{
//  int32_t result;
//  
//  char data[2];
//  char cmdData[1] = {reg};
//  
//  result = m_i2c.write(m_writeAddress, cmdData, 1);
//  if(result == 0)
//  {
//      result = m_i2c.read(m_readAddress, data, 2);
//      if (result == 0)
//      {
//          value = (data[0] << 8) + data[1];
//      }
//  }
//  
//  return result;
//}


/*******************************************************************************
 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
 *
 * 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 MAXIM INTEGRATED 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.
 *
 * Except as contained in this notice, the name of Maxim Integrated
 * Products, Inc. shall not be used except as stated in the Maxim Integrated
 * Products, Inc. Branding Policy.
 *
 * The mere transfer of this software does not imply any licenses
 * of trade secrets, proprietary technology, copyrights, patents,
 * trademarks, maskwork rights, or any other form of intellectual
 * property whatsoever. Maxim Integrated Products, Inc. retains all
 * ownership rights.
 *******************************************************************************
 */
#include "MAX30205.h"

//******************************************************************************
MAX30205::MAX30205(PinName sda, PinName scl, int slaveAddress) : 
          slaveAddress(slaveAddress) {
  i2c = new I2C(sda, scl);
  isOwner = true;
  i2c->frequency(100000);
}

//******************************************************************************
MAX30205::MAX30205(I2C *i2c, int slaveAddress) : slaveAddress(slaveAddress) {
  this->i2c = i2c;
  i2c->frequency(100000);
  isOwner = false;
}

//******************************************************************************
MAX30205::~MAX30205(void) {
  if (isOwner == true) {
    delete i2c;
  }
}

//******************************************************************************
int MAX30205::reg_write(char reg, char value) {
  int result;
  char cmdData[2] = {(char)reg, value};
  result = i2c->write(slaveAddress, cmdData, 2);
  if (result != 0){
    return -1;
  }
  return 0;
}

//******************************************************************************
int MAX30205::reg_write16(char reg, uint16_t value) {
  int result;
  char hi = (value >> 8) & 0xFF;
  char lo = value & 0xFF;
  char cmdData[3] = {reg, hi, lo};
  result = i2c->write(slaveAddress, cmdData, 3);
  if (result != 0) {
    return -1;
  }
  return 0;
}

//******************************************************************************
int MAX30205::reg_read(char reg, char *value) {
  int result;
  char cmdData[1] = {reg};

  result = i2c->write(slaveAddress, cmdData, 1);
  if (result != 0) {
    return -1;
  }
  result = i2c->read(slaveAddress, value, 1);
  if (result != 0){
    return -1;
  }
  return 0;
}

//******************************************************************************
int MAX30205::reg_read16(char reg, uint16_t *value) {
  int result;
  char data[2];
  char cmdData[1] = {reg};
  result = i2c->write(slaveAddress, cmdData, 1);
  if (result != 0) {
    return -1;
  }
  result = i2c->read(slaveAddress, data, 2);
  if (result != 0) {
    return -1;
  }
  *value = (data[0] << 8) + data[1];
  return 0;
}

//******************************************************************************
int MAX30205::readTemperature(uint16_t *value) {
  uint8_t data[2];
  int status;
  status = reg_read16(MAX30205_Temperature, (uint16_t *)&data);
  *value = (data[0] << 8) + data[1];
  return status;
}

//******************************************************************************
float MAX30205::toCelsius(unsigned int rawTemp) {
  float val;
  float val1, val2;
  val1 = (float)(rawTemp >> 8);
  val2 = (float)(rawTemp & 0xFF);
  val = val2 + (val1 / 256.0f);
  return val;
}

//******************************************************************************
float MAX30205::toFahrenheit(float temperatureC) {
  return temperatureC * 9.0f / 5.0f + 32.0f;
}

//******************************************************************************
int MAX30205::reg_THYST_Read(uint16_t *value) {
  return reg_read16(MAX30205_THYST, value);
}

//******************************************************************************
int MAX30205::reg_THYST_Write(uint16_t value) {
  return reg_write16(MAX30205_THYST, value);
}