Jerry Bradshaw
/
HSP_Release
This is a mbed 5.2 Release
Fork of mbed-os-test by
HSP/Devices/MAX30205/MAX30205/MAX30205.cpp
- Committer:
- jbradshaw
- Date:
- 2016-10-25
- Revision:
- 0:e4a10ed6eb92
File content as of revision 0:e4a10ed6eb92:
/******************************************************************************* * 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); }