Fork of Maxim's human body temp sensor library that works with mbed-os 5
Fork of MAX30205 by
MAX30205.cpp
- Committer:
- j3
- Date:
- 2017-04-03
- Revision:
- 0:cdad7a9ef486
- Child:
- 1:d4271ef9f37f
File content as of revision 0:cdad7a9ef486:
/******************************************************************************* * 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, uint8_t slaveAddress): m_i2c(sda, scl), m_writeAddress(slaveAddress << 1), m_readAddress((slaveAddress << 1) | 1) { } //****************************************************************************** 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::reg_write(Registers reg, uint8_t value) { int32_t result; char cmdData[2] = {reg, value}; result = m_i2c.write(m_writeAddress, cmdData, 2); return result; } //****************************************************************************** int32_t MAX30205::reg_write16(Registers 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::reg_read(Registers reg, uint8_t& value) { int32_t result; char cmdData[1] = {reg}; char readData; result = m_i2c.write(m_writeAddress, cmdData, 1); if(result == 0) { result = m_i2c.read(m_readAddress, &readData, 1); if(result == 0) { value = readData; } } return result; } //****************************************************************************** int32_t MAX30205::reg_read16(Registers 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; } //****************************************************************************** int32_t MAX30205::readTemperature(uint16_t& value) { int32_t result = reg_read16(MAX30205::Temperature, value); return result; } //****************************************************************************** float MAX30205::toCelsius(uint32_t rawTemp) { float val1, val2; val1 = static_cast<float>(rawTemp >> 8); val2 = static_cast<float>(rawTemp & 0xFF); return(val2 + (val1 / 256.0F)); } //****************************************************************************** float MAX30205::toFahrenheit(float temperatureC) { return((temperatureC * 1.8F) + 32.0f); } //****************************************************************************** int32_t MAX30205::reg_THYST_Read(uint16_t& value) { return reg_read16(MAX30205::THYST, value); } //****************************************************************************** int32_t MAX30205::reg_THYST_Write(uint16_t value) { return reg_write16(MAX30205::THYST, value); }