Greg Steiert / MAX30105

Library for MAX3010x optical sensors

Dependents:   Temp_Prox_Demo

MAX30105.cpp@1:411eb3796949, 2017-02-16 (annotated)

Committer:
switches
Date:
Thu Feb 16 22:01:02 2017 +0000
Revision:
1:411eb3796949
Parent:
0:62bc11b5bc43 
Added class summary comments

Who changed what in which revision?

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switches 0:62bc11b5bc43 1 /** \file max30105.cpp ******************************************************
switches 0:62bc11b5bc43 2 *
switches 0:62bc11b5bc43 3 * Project: MAXREFDES117#
switches 0:62bc11b5bc43 4 * Filename: max30105.cpp
switches 0:62bc11b5bc43 5 * Description: This module is an embedded controller driver for the MAX30105
switches 0:62bc11b5bc43 6 *
switches 0:62bc11b5bc43 7 * ------------------------------------------------------------------------- */
switches 0:62bc11b5bc43 8 /*******************************************************************************
switches 0:62bc11b5bc43 9 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
switches 0:62bc11b5bc43 10 *
switches 0:62bc11b5bc43 11 * Permission is hereby granted, free of charge, to any person obtaining a
switches 0:62bc11b5bc43 12 * copy of this software and associated documentation files (the "Software"),
switches 0:62bc11b5bc43 13 * to deal in the Software without restriction, including without limitation
switches 0:62bc11b5bc43 14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
switches 0:62bc11b5bc43 15 * and/or sell copies of the Software, and to permit persons to whom the
switches 0:62bc11b5bc43 16 * Software is furnished to do so, subject to the following conditions:
switches 0:62bc11b5bc43 17 *
switches 0:62bc11b5bc43 18 * The above copyright notice and this permission notice shall be included
switches 0:62bc11b5bc43 19 * in all copies or substantial portions of the Software.
switches 0:62bc11b5bc43 20 *
switches 0:62bc11b5bc43 21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
switches 0:62bc11b5bc43 22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
switches 0:62bc11b5bc43 23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
switches 0:62bc11b5bc43 24 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
switches 0:62bc11b5bc43 25 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
switches 0:62bc11b5bc43 26 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
switches 0:62bc11b5bc43 27 * OTHER DEALINGS IN THE SOFTWARE.
switches 0:62bc11b5bc43 28 *
switches 0:62bc11b5bc43 29 * Except as contained in this notice, the name of Maxim Integrated
switches 0:62bc11b5bc43 30 * Products, Inc. shall not be used except as stated in the Maxim Integrated
switches 0:62bc11b5bc43 31 * Products, Inc. Branding Policy.
switches 0:62bc11b5bc43 32 *
switches 0:62bc11b5bc43 33 * The mere transfer of this software does not imply any licenses
switches 0:62bc11b5bc43 34 * of trade secrets, proprietary technology, copyrights, patents,
switches 0:62bc11b5bc43 35 * trademarks, maskwork rights, or any other form of intellectual
switches 0:62bc11b5bc43 36 * property whatsoever. Maxim Integrated Products, Inc. retains all
switches 0:62bc11b5bc43 37 * ownership rights.
switches 0:62bc11b5bc43 38 *******************************************************************************
switches 0:62bc11b5bc43 39 */
switches 0:62bc11b5bc43 40 #include "mbed.h"
switches 0:62bc11b5bc43 41 #include "MAX30105.h"
switches 0:62bc11b5bc43 42
switches 0:62bc11b5bc43 43 //******************************************************************************
switches 0:62bc11b5bc43 44 MAX30105::MAX30105(I2C &i2c): _i2c(i2c)
switches 0:62bc11b5bc43 45 {
switches 0:62bc11b5bc43 46 }
switches 0:62bc11b5bc43 47
switches 0:62bc11b5bc43 48 //******************************************************************************
switches 0:62bc11b5bc43 49 MAX30105::~MAX30105()
switches 0:62bc11b5bc43 50 {
switches 0:62bc11b5bc43 51 }
switches 0:62bc11b5bc43 52
switches 0:62bc11b5bc43 53 //******************************************************************************
switches 0:62bc11b5bc43 54 int MAX30105::writeReg(registers_t reg, char value)
switches 0:62bc11b5bc43 55 {
switches 0:62bc11b5bc43 56 char cmdData[2] = { (char)reg, value };
switches 0:62bc11b5bc43 57
switches 0:62bc11b5bc43 58 if (_i2c.write(MAX30105_I2C_ADDR, cmdData, sizeof(cmdData)) != 0) {
switches 0:62bc11b5bc43 59 return MAX30105_ERROR;
switches 0:62bc11b5bc43 60 }
switches 0:62bc11b5bc43 61
switches 0:62bc11b5bc43 62 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 63 }
switches 0:62bc11b5bc43 64
switches 0:62bc11b5bc43 65 //******************************************************************************
switches 0:62bc11b5bc43 66 int MAX30105::readReg(registers_t reg, char *value)
switches 0:62bc11b5bc43 67 {
switches 0:62bc11b5bc43 68 char cmdData[1] = { (char)reg };
switches 0:62bc11b5bc43 69
switches 0:62bc11b5bc43 70 if (_i2c.write(MAX30105_I2C_ADDR, cmdData, sizeof(cmdData)) != 0) {
switches 0:62bc11b5bc43 71 return MAX30105_ERROR;
switches 0:62bc11b5bc43 72 }
switches 0:62bc11b5bc43 73
switches 0:62bc11b5bc43 74 if (_i2c.read(MAX30105_I2C_ADDR, value, 1) != 0) {
switches 0:62bc11b5bc43 75 return MAX30105_ERROR;
switches 0:62bc11b5bc43 76 }
switches 0:62bc11b5bc43 77
switches 0:62bc11b5bc43 78 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 79 }
switches 0:62bc11b5bc43 80
switches 0:62bc11b5bc43 81 //******************************************************************************
switches 0:62bc11b5bc43 82 int MAX30105::setSingleLED(smp_ave_t smpAve,
switches 0:62bc11b5bc43 83 bool fifoRollOver,
switches 0:62bc11b5bc43 84 fifo_a_full_t fifoAFull,
switches 0:62bc11b5bc43 85 adc_rge_t adcRange,
switches 0:62bc11b5bc43 86 smp_rt_t smpRate,
switches 0:62bc11b5bc43 87 led_pw_t ledPW,
switches 0:62bc11b5bc43 88 char led1PA) {
switches 0:62bc11b5bc43 89 char dataBuf[4];
switches 0:62bc11b5bc43 90 _fifoConfiguration = (smpAve & MASK_SMP_AVE) | (fifoAFull & MASK_FIFO_A_FULL);
switches 0:62bc11b5bc43 91 if(fifoRollOver) _fifoConfiguration |= MASK_FIFO_ROLLOVER_EN;
switches 0:62bc11b5bc43 92 _modeConfiguration = (_modeConfiguration & MASK_SHDN) | MODE_1LED;
switches 0:62bc11b5bc43 93 _spo2Configuration = (adcRange & MASK_ADC_RGE) | (smpRate & MASK_SMP_RT) | (ledPW & MASK_LED_PW);
switches 0:62bc11b5bc43 94 _led1PulseAmplitude = led1PA;
switches 0:62bc11b5bc43 95 dataBuf[0] = REG_LED1_PA;
switches 0:62bc11b5bc43 96 dataBuf[1] = _led1PulseAmplitude;
switches 0:62bc11b5bc43 97 if (_i2c.write(MAX30105_I2C_ADDR, dataBuf, 2) != 0) return MAX30105_ERROR;
switches 0:62bc11b5bc43 98 dataBuf[0] = REG_FIFO_CONFIG;
switches 0:62bc11b5bc43 99 dataBuf[1] = _fifoConfiguration;
switches 0:62bc11b5bc43 100 dataBuf[2] = _modeConfiguration;
switches 0:62bc11b5bc43 101 dataBuf[3] = _spo2Configuration;
switches 0:62bc11b5bc43 102 if (_i2c.write(MAX30105_I2C_ADDR, dataBuf, 4) != 0) return MAX30105_ERROR;
switches 0:62bc11b5bc43 103
switches 0:62bc11b5bc43 104 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 105 }
switches 0:62bc11b5bc43 106
switches 0:62bc11b5bc43 107 //******************************************************************************
switches 0:62bc11b5bc43 108 int MAX30105::setDualLED(smp_ave_t smpAve,
switches 0:62bc11b5bc43 109 bool fifoRollOver,
switches 0:62bc11b5bc43 110 fifo_a_full_t fifoAFull,
switches 0:62bc11b5bc43 111 adc_rge_t adcRange,
switches 0:62bc11b5bc43 112 smp_rt_t smpRate,
switches 0:62bc11b5bc43 113 led_pw_t ledPW,
switches 0:62bc11b5bc43 114 char led1PA,
switches 0:62bc11b5bc43 115 char led2PA) {
switches 0:62bc11b5bc43 116 char dataBuf[4];
switches 0:62bc11b5bc43 117 _fifoConfiguration = (smpAve & MASK_SMP_AVE) | (fifoAFull & MASK_FIFO_A_FULL);
switches 0:62bc11b5bc43 118 if(fifoRollOver) _fifoConfiguration |= MASK_FIFO_ROLLOVER_EN;
switches 0:62bc11b5bc43 119 _modeConfiguration = (_modeConfiguration & MASK_SHDN) | MODE_2LED;
switches 0:62bc11b5bc43 120 _spo2Configuration = (adcRange & MASK_ADC_RGE) | (smpRate & MASK_SMP_RT) | (ledPW & MASK_LED_PW);
switches 0:62bc11b5bc43 121 _led1PulseAmplitude = led1PA;
switches 0:62bc11b5bc43 122 _led2PulseAmplitude = led2PA;
switches 0:62bc11b5bc43 123 dataBuf[0] = REG_LED1_PA;
switches 0:62bc11b5bc43 124 dataBuf[1] = _led1PulseAmplitude;
switches 0:62bc11b5bc43 125 dataBuf[2] = _led2PulseAmplitude;
switches 0:62bc11b5bc43 126 if (_i2c.write(MAX30105_I2C_ADDR, dataBuf, 3) != 0) return MAX30105_ERROR;
switches 0:62bc11b5bc43 127 dataBuf[0] = REG_FIFO_CONFIG;
switches 0:62bc11b5bc43 128 dataBuf[1] = _fifoConfiguration;
switches 0:62bc11b5bc43 129 dataBuf[2] = _modeConfiguration;
switches 0:62bc11b5bc43 130 dataBuf[3] = _spo2Configuration;
switches 0:62bc11b5bc43 131 if (_i2c.write(MAX30105_I2C_ADDR, dataBuf, 4) != 0) return MAX30105_ERROR;
switches 0:62bc11b5bc43 132
switches 0:62bc11b5bc43 133 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 134 }
switches 0:62bc11b5bc43 135
switches 0:62bc11b5bc43 136 //******************************************************************************
switches 0:62bc11b5bc43 137 int MAX30105::setMultiLED(smp_ave_t smpAve,
switches 0:62bc11b5bc43 138 bool fifoRollOver,
switches 0:62bc11b5bc43 139 fifo_a_full_t fifoAFull,
switches 0:62bc11b5bc43 140 adc_rge_t adcRange,
switches 0:62bc11b5bc43 141 smp_rt_t smpRate,
switches 0:62bc11b5bc43 142 led_pw_t ledPW,
switches 0:62bc11b5bc43 143 char led1PA,
switches 0:62bc11b5bc43 144 char led2PA,
switches 0:62bc11b5bc43 145 char led3PA,
switches 0:62bc11b5bc43 146 char pilotPA,
switches 0:62bc11b5bc43 147 slot_t slot1,
switches 0:62bc11b5bc43 148 slot_t slot2,
switches 0:62bc11b5bc43 149 slot_t slot3,
switches 0:62bc11b5bc43 150 slot_t slot4) {
switches 0:62bc11b5bc43 151 char dataBuf[4];
switches 0:62bc11b5bc43 152 _fifoConfiguration = (smpAve & MASK_SMP_AVE) | (fifoAFull & MASK_FIFO_A_FULL);
switches 0:62bc11b5bc43 153 if(fifoRollOver) _fifoConfiguration |= MASK_FIFO_ROLLOVER_EN;
switches 0:62bc11b5bc43 154 _modeConfiguration = (_modeConfiguration & MASK_SHDN) | MODE_MULTI;
switches 0:62bc11b5bc43 155 _spo2Configuration = (adcRange & MASK_ADC_RGE) | (smpRate & MASK_SMP_RT) | (ledPW & MASK_LED_PW);
switches 0:62bc11b5bc43 156 _led1PulseAmplitude = led1PA;
switches 0:62bc11b5bc43 157 _led2PulseAmplitude = led2PA;
switches 0:62bc11b5bc43 158 _led3PulseAmplitude = led3PA;
switches 0:62bc11b5bc43 159 _pilotPulseAmplitude = pilotPA;
switches 0:62bc11b5bc43 160 _multiLedControl1 = (slot2 << 4) | slot1;
switches 0:62bc11b5bc43 161 _multiLedControl2 = (slot4 << 4) | slot3;
switches 0:62bc11b5bc43 162 dataBuf[0] = REG_PILOT_PA;
switches 0:62bc11b5bc43 163 dataBuf[1] = _pilotPulseAmplitude;
switches 0:62bc11b5bc43 164 dataBuf[2] = _multiLedControl1;
switches 0:62bc11b5bc43 165 dataBuf[3] = _multiLedControl2;
switches 0:62bc11b5bc43 166 if (_i2c.write(MAX30105_I2C_ADDR, dataBuf, 4) != 0) return MAX30105_ERROR;
switches 0:62bc11b5bc43 167 dataBuf[0] = REG_LED1_PA;
switches 0:62bc11b5bc43 168 dataBuf[1] = _led1PulseAmplitude;
switches 0:62bc11b5bc43 169 dataBuf[2] = _led2PulseAmplitude;
switches 0:62bc11b5bc43 170 dataBuf[3] = _led3PulseAmplitude;
switches 0:62bc11b5bc43 171 if (_i2c.write(MAX30105_I2C_ADDR, dataBuf, 4) != 0) return MAX30105_ERROR;
switches 0:62bc11b5bc43 172 dataBuf[0] = REG_FIFO_CONFIG;
switches 0:62bc11b5bc43 173 dataBuf[1] = _fifoConfiguration;
switches 0:62bc11b5bc43 174 dataBuf[2] = _modeConfiguration;
switches 0:62bc11b5bc43 175 dataBuf[3] = _spo2Configuration;
switches 0:62bc11b5bc43 176 if (_i2c.write(MAX30105_I2C_ADDR, dataBuf, 4) != 0) return MAX30105_ERROR;
switches 0:62bc11b5bc43 177
switches 0:62bc11b5bc43 178 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 179 }
switches 0:62bc11b5bc43 180
switches 0:62bc11b5bc43 181 //******************************************************************************
switches 0:62bc11b5bc43 182 int MAX30105::init()
switches 0:62bc11b5bc43 183 {
switches 0:62bc11b5bc43 184 if(writeReg(REG_INTR_ENABLE_1,0xc0) != MAX30105_NO_ERROR) // INTR setting
switches 0:62bc11b5bc43 185 return MAX30105_ERROR;
switches 0:62bc11b5bc43 186 if(writeReg(REG_INTR_ENABLE_2,0x00) != MAX30105_NO_ERROR)
switches 0:62bc11b5bc43 187 return MAX30105_ERROR;
switches 0:62bc11b5bc43 188 if(writeReg(REG_FIFO_WR_PTR,0x00) != MAX30105_NO_ERROR) //FIFO_WR_PTR[4:0]
switches 0:62bc11b5bc43 189 return MAX30105_ERROR;
switches 0:62bc11b5bc43 190 if(writeReg(REG_OVF_COUNTER,0x00) != MAX30105_NO_ERROR) //OVF_COUNTER[4:0]
switches 0:62bc11b5bc43 191 return MAX30105_ERROR;
switches 0:62bc11b5bc43 192 if(writeReg(REG_FIFO_RD_PTR,0x00) != MAX30105_NO_ERROR) //FIFO_RD_PTR[4:0]
switches 0:62bc11b5bc43 193 return MAX30105_ERROR;
switches 0:62bc11b5bc43 194 if(writeReg(REG_FIFO_CONFIG,0x0f) != MAX30105_NO_ERROR) //sample avg = 1, fifo rollover=false, fifo almost full = 17
switches 0:62bc11b5bc43 195 return MAX30105_ERROR;
switches 0:62bc11b5bc43 196 if(writeReg(REG_MODE_CONFIG,0x03) != MAX30105_NO_ERROR) //0x02 for Red only, 0x03 for SpO2 mode 0x07 multimode LED
switches 0:62bc11b5bc43 197 return MAX30105_ERROR;
switches 0:62bc11b5bc43 198 if(writeReg(REG_SPO2_CONFIG,0x27) != MAX30105_NO_ERROR) // SPO2_ADC range = 4096nA, SPO2 sample rate (100 Hz), LED pulseWidth (400uS)
switches 0:62bc11b5bc43 199 return MAX30105_ERROR;
switches 0:62bc11b5bc43 200 if(writeReg(REG_LED1_PA,0x24) != MAX30105_NO_ERROR) //Choose value for ~ 7mA for LED1
switches 0:62bc11b5bc43 201 return MAX30105_ERROR;
switches 0:62bc11b5bc43 202 if(writeReg(REG_LED2_PA,0x24) != MAX30105_NO_ERROR) // Choose value for ~ 7mA for LED2
switches 0:62bc11b5bc43 203 return MAX30105_ERROR;
switches 0:62bc11b5bc43 204 if(writeReg(REG_PILOT_PA,0x7f) != MAX30105_NO_ERROR) // Choose value for ~ 25mA for Pilot LED
switches 0:62bc11b5bc43 205 return MAX30105_ERROR;
switches 0:62bc11b5bc43 206 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 207 }
switches 0:62bc11b5bc43 208
switches 0:62bc11b5bc43 209 int MAX30105::readFIFO(uint32_t *redLED, uint32_t *irLED)
switches 0:62bc11b5bc43 210 {
switches 0:62bc11b5bc43 211 uint32_t un_temp;
switches 0:62bc11b5bc43 212 // char uch_temp;
switches 0:62bc11b5bc43 213 *redLED=0;
switches 0:62bc11b5bc43 214 *irLED=0;
switches 0:62bc11b5bc43 215 char ach_i2c_data[6];
switches 0:62bc11b5bc43 216
switches 0:62bc11b5bc43 217 //read and clear status register
switches 0:62bc11b5bc43 218 //readReg(REG_INTR_STATUS_1, &uch_temp);
switches 0:62bc11b5bc43 219 //readReg(REG_INTR_STATUS_2, &uch_temp);
switches 0:62bc11b5bc43 220
switches 0:62bc11b5bc43 221 ach_i2c_data[0]=REG_FIFO_DATA;
switches 0:62bc11b5bc43 222 if(_i2c.write(MAX30105_I2C_ADDR, ach_i2c_data, 1, true)!=0)
switches 0:62bc11b5bc43 223 return MAX30105_ERROR;
switches 0:62bc11b5bc43 224 if(_i2c.read(MAX30105_I2C_ADDR, ach_i2c_data, 6, false)!=0) {
switches 0:62bc11b5bc43 225 return MAX30105_ERROR;
switches 0:62bc11b5bc43 226 }
switches 0:62bc11b5bc43 227 un_temp=(unsigned char) ach_i2c_data[0];
switches 0:62bc11b5bc43 228 un_temp<<=16;
switches 0:62bc11b5bc43 229 *redLED+=un_temp;
switches 0:62bc11b5bc43 230 un_temp=(unsigned char) ach_i2c_data[1];
switches 0:62bc11b5bc43 231 un_temp<<=8;
switches 0:62bc11b5bc43 232 *redLED+=un_temp;
switches 0:62bc11b5bc43 233 un_temp=(unsigned char) ach_i2c_data[2];
switches 0:62bc11b5bc43 234 *redLED+=un_temp;
switches 0:62bc11b5bc43 235
switches 0:62bc11b5bc43 236 un_temp=(unsigned char) ach_i2c_data[3];
switches 0:62bc11b5bc43 237 un_temp<<=16;
switches 0:62bc11b5bc43 238 *irLED+=un_temp;
switches 0:62bc11b5bc43 239 un_temp=(unsigned char) ach_i2c_data[4];
switches 0:62bc11b5bc43 240 un_temp<<=8;
switches 0:62bc11b5bc43 241 *irLED+=un_temp;
switches 0:62bc11b5bc43 242 un_temp=(unsigned char) ach_i2c_data[5];
switches 0:62bc11b5bc43 243 *irLED+=un_temp;
switches 0:62bc11b5bc43 244 *redLED&=0x03FFFF; //Mask MSB [23:18]
switches 0:62bc11b5bc43 245 *irLED&=0x03FFFF; //Mask MSB [23:18]
switches 0:62bc11b5bc43 246
switches 0:62bc11b5bc43 247
switches 0:62bc11b5bc43 248 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 249 }
switches 0:62bc11b5bc43 250
switches 0:62bc11b5bc43 251
switches 0:62bc11b5bc43 252 //******************************************************************************
switches 0:62bc11b5bc43 253 int MAX30105::getIntr1()
switches 0:62bc11b5bc43 254 {
switches 0:62bc11b5bc43 255 char * intStatus;
switches 0:62bc11b5bc43 256 if(readReg(REG_INTR_STATUS_1, intStatus) != MAX30105_NO_ERROR) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 257 return (int)*intStatus;
switches 0:62bc11b5bc43 258 }
switches 0:62bc11b5bc43 259
switches 0:62bc11b5bc43 260 //******************************************************************************
switches 0:62bc11b5bc43 261 int MAX30105::getIntr2()
switches 0:62bc11b5bc43 262 {
switches 0:62bc11b5bc43 263 char * intStatus;
switches 0:62bc11b5bc43 264 if(readReg(REG_INTR_STATUS_2, intStatus) != MAX30105_NO_ERROR) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 265 return (int)*intStatus;
switches 0:62bc11b5bc43 266 }
switches 0:62bc11b5bc43 267
switches 0:62bc11b5bc43 268 //******************************************************************************
switches 0:62bc11b5bc43 269 int MAX30105::enableIntr(char intrBits)
switches 0:62bc11b5bc43 270 {
switches 0:62bc11b5bc43 271 char intr1 = intrBits & (INTR_A_FULL|INTR_DATA_RDY|INTR_ALC_OVF|INTR_PROX);
switches 0:62bc11b5bc43 272 char intr2 = intrBits & INTR_TEMP_RDY;
switches 0:62bc11b5bc43 273 _interruptEnable1 |= intr1;
switches 0:62bc11b5bc43 274 if(writeReg(REG_INTR_ENABLE_1, _interruptEnable1) != MAX30105_NO_ERROR) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 275 _interruptEnable2 |= intr2;
switches 0:62bc11b5bc43 276 if(writeReg(REG_INTR_ENABLE_2, _interruptEnable2) != MAX30105_NO_ERROR) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 277 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 278 }
switches 0:62bc11b5bc43 279
switches 0:62bc11b5bc43 280 //******************************************************************************
switches 0:62bc11b5bc43 281 int MAX30105::disableIntr(char intrBits)
switches 0:62bc11b5bc43 282 {
switches 0:62bc11b5bc43 283 char intr1 = intrBits & (INTR_A_FULL|INTR_DATA_RDY|INTR_ALC_OVF|INTR_PROX);
switches 0:62bc11b5bc43 284 char intr2 = intrBits & INTR_TEMP_RDY;
switches 0:62bc11b5bc43 285 _interruptEnable1 &= ~intr1;
switches 0:62bc11b5bc43 286 if(writeReg(REG_INTR_ENABLE_1, _interruptEnable1) != MAX30105_NO_ERROR) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 287 _interruptEnable2 &= ~intr2;
switches 0:62bc11b5bc43 288 if(writeReg(REG_INTR_ENABLE_2, _interruptEnable2) != MAX30105_NO_ERROR) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 289 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 290 }
switches 0:62bc11b5bc43 291
switches 0:62bc11b5bc43 292 //******************************************************************************
switches 0:62bc11b5bc43 293 int MAX30105::setProx(char proxAmp, char proxThresh)
switches 0:62bc11b5bc43 294 {
switches 0:62bc11b5bc43 295 if(writeReg(REG_PILOT_PA, proxAmp) != MAX30105_NO_ERROR) return MAX30105_ERROR;
switches 0:62bc11b5bc43 296 if(writeReg(REG_PROX_INTR_THRESH, proxThresh) != MAX30105_NO_ERROR) return MAX30105_ERROR;
switches 0:62bc11b5bc43 297 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 298 }
switches 0:62bc11b5bc43 299
switches 0:62bc11b5bc43 300
switches 0:62bc11b5bc43 301 //******************************************************************************
switches 0:62bc11b5bc43 302 float MAX30105::readTemperature()
switches 0:62bc11b5bc43 303 {
switches 0:62bc11b5bc43 304 char dataBuf[2];
switches 0:62bc11b5bc43 305 int8_t * dataSigned = reinterpret_cast<int8_t *>(dataBuf);
switches 0:62bc11b5bc43 306
switches 0:62bc11b5bc43 307 if(writeReg(REG_TEMP_CONFIG, 0x01) != MAX30105_NO_ERROR) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 308 wait_ms(30);
switches 0:62bc11b5bc43 309 if(readReg(REG_TEMP_CONFIG, dataBuf) != MAX30105_NO_ERROR) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 310 while (dataBuf[0]) {
switches 0:62bc11b5bc43 311 // Thread::wait(1);
switches 0:62bc11b5bc43 312 wait_ms(1);
switches 0:62bc11b5bc43 313 if(readReg(REG_TEMP_CONFIG, dataBuf) != MAX30105_NO_ERROR) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 314 }
switches 0:62bc11b5bc43 315 dataBuf[0] = REG_TEMP_INT;
switches 0:62bc11b5bc43 316 if (_i2c.write(MAX30105_I2C_ADDR, dataBuf, 1) != 0) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 317 if (_i2c.read(MAX30105_I2C_ADDR, dataBuf, 2) != 0) return MAX30105_TEMP_ERROR;
switches 0:62bc11b5bc43 318 return ((float)dataSigned[0] + ((float)dataSigned[1] * 0.0625));
switches 0:62bc11b5bc43 319 }
switches 0:62bc11b5bc43 320
switches 0:62bc11b5bc43 321 //******************************************************************************
switches 0:62bc11b5bc43 322 int MAX30105::shutDown()
switches 0:62bc11b5bc43 323 {
switches 0:62bc11b5bc43 324 _modeConfiguration |= MASK_SHDN;
switches 0:62bc11b5bc43 325 if(writeReg(REG_MODE_CONFIG, _modeConfiguration) != MAX30105_NO_ERROR) return MAX30105_ERROR;
switches 0:62bc11b5bc43 326 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 327 }
switches 0:62bc11b5bc43 328
switches 0:62bc11b5bc43 329 //******************************************************************************
switches 0:62bc11b5bc43 330 int MAX30105::wakeUp()
switches 0:62bc11b5bc43 331 {
switches 0:62bc11b5bc43 332 _modeConfiguration &= ~MASK_SHDN;
switches 0:62bc11b5bc43 333 if(writeReg(REG_MODE_CONFIG, _modeConfiguration) != MAX30105_NO_ERROR) return MAX30105_ERROR;
switches 0:62bc11b5bc43 334 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 335 }
switches 0:62bc11b5bc43 336
switches 0:62bc11b5bc43 337 //******************************************************************************
switches 0:62bc11b5bc43 338 int MAX30105::softReset()
switches 0:62bc11b5bc43 339 {
switches 0:62bc11b5bc43 340 if(writeReg(REG_MODE_CONFIG, MASK_RESET) != MAX30105_NO_ERROR) return MAX30105_ERROR;
switches 0:62bc11b5bc43 341 _interruptEnable1 = 0x00;
switches 0:62bc11b5bc43 342 _interruptEnable2 = 0x00;
switches 0:62bc11b5bc43 343 _fifoConfiguration = 0x00;
switches 0:62bc11b5bc43 344 _modeConfiguration = 0x00;
switches 0:62bc11b5bc43 345 _spo2Configuration = 0x00;
switches 0:62bc11b5bc43 346 _led1PulseAmplitude = 0x00;
switches 0:62bc11b5bc43 347 _led2PulseAmplitude = 0x00;
switches 0:62bc11b5bc43 348 _led3PulseAmplitude = 0x00;
switches 0:62bc11b5bc43 349 _pilotPulseAmplitude = 0x00;
switches 0:62bc11b5bc43 350 _multiLedControl1 = 0x00;
switches 0:62bc11b5bc43 351 _multiLedControl2 = 0x00;
switches 0:62bc11b5bc43 352 _proxIntThreshold = 0x00;
switches 0:62bc11b5bc43 353 return MAX30105_NO_ERROR;
switches 0:62bc11b5bc43 354 }