Maxim Integrated / MAX30101

Library for MAX30101 SpO2 and heart rate sensor

Dependents:   HeartRate HeartRate proj final_project_ee119 ... more

MAX30101.cpp@0:2d0c91de9279, 2017-04-13 (annotated)

Committer:
j3
Date:
Thu Apr 13 23:23:36 2017 +0000
Revision:
0:2d0c91de9279
Child:
1:9e2a3b4a24c7
init commit, basic outline

Who changed what in which revision?

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j3 0:2d0c91de9279 1 /*******************************************************************************
j3 0:2d0c91de9279 2 * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
j3 0:2d0c91de9279 3 *
j3 0:2d0c91de9279 4 * Permission is hereby granted, free of charge, to any person obtaining a
j3 0:2d0c91de9279 5 * copy of this software and associated documentation files (the "Software"),
j3 0:2d0c91de9279 6 * to deal in the Software without restriction, including without limitation
j3 0:2d0c91de9279 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
j3 0:2d0c91de9279 8 * and/or sell copies of the Software, and to permit persons to whom the
j3 0:2d0c91de9279 9 * Software is furnished to do so, subject to the following conditions:
j3 0:2d0c91de9279 10 *
j3 0:2d0c91de9279 11 * The above copyright notice and this permission notice shall be included
j3 0:2d0c91de9279 12 * in all copies or substantial portions of the Software.
j3 0:2d0c91de9279 13 *
j3 0:2d0c91de9279 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
j3 0:2d0c91de9279 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
j3 0:2d0c91de9279 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
j3 0:2d0c91de9279 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
j3 0:2d0c91de9279 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
j3 0:2d0c91de9279 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
j3 0:2d0c91de9279 20 * OTHER DEALINGS IN THE SOFTWARE.
j3 0:2d0c91de9279 21 *
j3 0:2d0c91de9279 22 * Except as contained in this notice, the name of Maxim Integrated
j3 0:2d0c91de9279 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
j3 0:2d0c91de9279 24 * Products, Inc. Branding Policy.
j3 0:2d0c91de9279 25 *
j3 0:2d0c91de9279 26 * The mere transfer of this software does not imply any licenses
j3 0:2d0c91de9279 27 * of trade secrets, proprietary technology, copyrights, patents,
j3 0:2d0c91de9279 28 * trademarks, maskwork rights, or any other form of intellectual
j3 0:2d0c91de9279 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
j3 0:2d0c91de9279 30 * ownership rights.
j3 0:2d0c91de9279 31 *******************************************************************************
j3 0:2d0c91de9279 32 */
j3 0:2d0c91de9279 33
j3 0:2d0c91de9279 34
j3 0:2d0c91de9279 35 #include "MAX30101.h"
j3 0:2d0c91de9279 36
j3 0:2d0c91de9279 37
j3 0:2d0c91de9279 38 //*****************************************************************************
j3 0:2d0c91de9279 39 MAX30101::MAX30101(PinName sda, PinName scl):
j3 0:2d0c91de9279 40 m_i2cBus(sda, scl)
j3 0:2d0c91de9279 41 {
j3 0:2d0c91de9279 42 //empty block
j3 0:2d0c91de9279 43 }
j3 0:2d0c91de9279 44
j3 0:2d0c91de9279 45
j3 0:2d0c91de9279 46 //*****************************************************************************
j3 0:2d0c91de9279 47 MAX30101::MAX30101(I2C &i2c):
j3 0:2d0c91de9279 48 m_i2cBus(i2c)
j3 0:2d0c91de9279 49 {
j3 0:2d0c91de9279 50 //empty block
j3 0:2d0c91de9279 51 }
j3 0:2d0c91de9279 52
j3 0:2d0c91de9279 53
j3 0:2d0c91de9279 54 //*****************************************************************************
j3 0:2d0c91de9279 55 MAX30101::~MAX30101()
j3 0:2d0c91de9279 56 {
j3 0:2d0c91de9279 57 //empty block
j3 0:2d0c91de9279 58 }
j3 0:2d0c91de9279 59
j3 0:2d0c91de9279 60
j3 0:2d0c91de9279 61 //*****************************************************************************
j3 0:2d0c91de9279 62 int32_t MAX30101::enableInterrupts(const InterruptBitField_u data)
j3 0:2d0c91de9279 63 {
j3 0:2d0c91de9279 64 char cmdData[3] = {InterruptEnable1, (data.all & 0xF0), (data.all & 0x02)};
j3 0:2d0c91de9279 65
j3 0:2d0c91de9279 66 return m_i2cBus.write(I2C_W_ADRS, cmdData, 3);
j3 0:2d0c91de9279 67 }
j3 0:2d0c91de9279 68
j3 0:2d0c91de9279 69
j3 0:2d0c91de9279 70 //*****************************************************************************
j3 0:2d0c91de9279 71 int32_t MAX30101::getInterruptStatus(InterruptBitField_u &data)
j3 0:2d0c91de9279 72 {
j3 0:2d0c91de9279 73 char local_data[3];
j3 0:2d0c91de9279 74 local_data[0] = InterruptStatus1;
j3 0:2d0c91de9279 75
j3 0:2d0c91de9279 76 int32_t result = m_i2cBus.write(I2C_W_ADRS, local_data, 1);
j3 0:2d0c91de9279 77 if(result == 0)
j3 0:2d0c91de9279 78 {
j3 0:2d0c91de9279 79 result = m_i2cBus.read(I2C_R_ADRS, (local_data + 1), 2);
j3 0:2d0c91de9279 80 if(result == 0)
j3 0:2d0c91de9279 81 {
j3 0:2d0c91de9279 82 data.all = local_data[1] + local_data[2];
j3 0:2d0c91de9279 83 }
j3 0:2d0c91de9279 84 }
j3 0:2d0c91de9279 85
j3 0:2d0c91de9279 86 return result;
j3 0:2d0c91de9279 87 }
j3 0:2d0c91de9279 88
j3 0:2d0c91de9279 89
j3 0:2d0c91de9279 90 //*****************************************************************************
j3 0:2d0c91de9279 91 int32_t MAX30101::writeRegister(Registers_e reg, uint8_t value)
j3 0:2d0c91de9279 92 {
j3 0:2d0c91de9279 93 char local_data[2] = {reg, value};
j3 0:2d0c91de9279 94
j3 0:2d0c91de9279 95 return m_i2cBus.write(I2C_W_ADRS, local_data, 2);
j3 0:2d0c91de9279 96 }
j3 0:2d0c91de9279 97
j3 0:2d0c91de9279 98
j3 0:2d0c91de9279 99 //*****************************************************************************
j3 0:2d0c91de9279 100 int32_t MAX30101::readRegister(Registers_e reg, uint8_t &value)
j3 0:2d0c91de9279 101 {
j3 0:2d0c91de9279 102 int32_t result;
j3 0:2d0c91de9279 103
j3 0:2d0c91de9279 104 char local_data[2];
j3 0:2d0c91de9279 105 local_data[0] = reg;
j3 0:2d0c91de9279 106
j3 0:2d0c91de9279 107 result = m_i2cBus.write(I2C_W_ADRS, local_data, 1);
j3 0:2d0c91de9279 108 if(result == 0)
j3 0:2d0c91de9279 109 {
j3 0:2d0c91de9279 110 result = m_i2cBus.read(I2C_R_ADRS, (local_data + 1), 1);
j3 0:2d0c91de9279 111 if (result == 0)
j3 0:2d0c91de9279 112 {
j3 0:2d0c91de9279 113 value = local_data[1];
j3 0:2d0c91de9279 114 }
j3 0:2d0c91de9279 115 }
j3 0:2d0c91de9279 116
j3 0:2d0c91de9279 117 return result;
j3 0:2d0c91de9279 118 }
j3 0:2d0c91de9279 119