IDT Optical Sensors / Mbed 2 deprecated OB1203_IDT

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   mbed OB1203_example_driver

main.cpp@22:e23b60520b6a, 2020-07-23 (annotated)

Committer:
laserdad
Date:
Thu Jul 23 20:24:58 2020 +0000
Revision:
22:e23b60520b6a
Parent:
21:97a0d4167902
Child:
24:4e6884f52ba0
Example code for Renesas/IDT OB1203 biosensor and prox/RGB sensor.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
laserdad 0:e9ae48b7f6f6 1 #include "mbed.h"
laserdad 0:e9ae48b7f6f6 2 #include "OB1203.h"
laserdad 0:e9ae48b7f6f6 3 #include "math.h"
laserdad 19:6e584392d4a7 4
laserdad 14:ae0be10b73cd 5 //normal
laserdad 14:ae0be10b73cd 6 I2C i2c(I2C_SDA,I2C_SCL); //instantiate an i2c object from its class
laserdad 0:e9ae48b7f6f6 7 #define intb_pin D3
laserdad 0:e9ae48b7f6f6 8
laserdad 14:ae0be10b73cd 9 //slave board//
laserdad 14:ae0be10b73cd 10 //I2C i2c(D12,PA_7);
laserdad 14:ae0be10b73cd 11 //#define intb_pin D10
laserdad 14:ae0be10b73cd 12
laserdad 14:ae0be10b73cd 13 InterruptIn intb(intb_pin); //declare an interrupt pin for INTB
laserdad 0:e9ae48b7f6f6 14
laserdad 14:ae0be10b73cd 15 //setting three 3 pins high to function as pullups for SDA, SCL and INTB
laserdad 22:e23b60520b6a 16 // these pins to SDA, SCL and INTB by 2.7K resistors.
laserdad 14:ae0be10b73cd 17 //5K resistors also work usually
laserdad 14:ae0be10b73cd 18 //DigitalOut sda_pullup(D10,1);
laserdad 14:ae0be10b73cd 19 //DigitalOut scl_pullup(D11,1);
laserdad 14:ae0be10b73cd 20 //DigitalOut intb_pullup(D12,1);
laserdad 13:5ce84c68066e 21
laserdad 14:ae0be10b73cd 22 OB1203 ob1203(&i2c); //instantiate the OB1203 object from its class and pass i2c object
laserdad 14:ae0be10b73cd 23 Serial pc(USBTX, USBRX,256000); //create a serial port for printing data to a pc
laserdad 21:97a0d4167902 24 //Serial pc(USBTX, USBRX,115200); //create a serial port for printing data to a pc
laserdad 14:ae0be10b73cd 25 Timer t; //use a microsecond timer for time stamping data
laserdad 0:e9ae48b7f6f6 26
laserdad 1:fb6b2b4d5d8a 27
laserdad 6:aaa2f8fb5123 28 //USER CONFIGURABLE*********
laserdad 7:3ed0f0522b43 29 bool mode = 1; //0 for PS_LS, 1 for PPG
laserdad 7:3ed0f0522b43 30 bool meas_ps = 1;
laserdad 12:5de5f550e765 31 bool spo2 = 1; //0 for HR, 1 for SpO2
laserdad 4:3aee2ca931b8 32 bool afull = 1; //use Afull interrupt--otherwise PPG new data interrupt
laserdad 14:ae0be10b73cd 33 bool meas_temp = 0;
laserdad 13:5ce84c68066e 34 bool printAvg = 0; //default 0 print raw data
laserdad 13:5ce84c68066e 35 bool redAGC = 1;
laserdad 19:6e584392d4a7 36 bool irAGC = 1;
laserdad 18:b7226b560838 37 bool trim_oscillator = 0;
laserdad 21:97a0d4167902 38 bool printCurrent = 1;
laserdad 22:e23b60520b6a 39 bool turn_off_prox_trim = 1;
laserdad 22:e23b60520b6a 40 //***************************
laserdad 6:aaa2f8fb5123 41
laserdad 6:aaa2f8fb5123 42 //internal settings
laserdad 6:aaa2f8fb5123 43 bool intFlagged =0;
laserdad 6:aaa2f8fb5123 44 int sample_delay = 25; //ms
laserdad 1:fb6b2b4d5d8a 45
laserdad 14:ae0be10b73cd 46 void defaultConfig() //populate the default settings here
laserdad 0:e9ae48b7f6f6 47 {
laserdad 14:ae0be10b73cd 48 //high accuracy oscillator trim overwrite option
laserdad 14:ae0be10b73cd 49 ob1203.osc_trim = 0x3F; //max trim code =0x3F
laserdad 14:ae0be10b73cd 50 //temperature sensor settings (hidden registers)
laserdad 4:3aee2ca931b8 51 meas_temp ? ob1203.temp_en = TEMP_ON : ob1203.temp_en = TEMP_OFF;
laserdad 14:ae0be10b73cd 52 //LS settings
laserdad 12:5de5f550e765 53 ob1203.ls_res = LS_RES(2); //2= 18bit 100ms, 0= max res
laserdad 12:5de5f550e765 54 ob1203.ls_rate = LS_RATE(2); //2 =100ms, 4 = 500ms
laserdad 4:3aee2ca931b8 55 ob1203.ls_gain = LS_GAIN(3); //gain 3 default (range)
laserdad 1:fb6b2b4d5d8a 56 ob1203.ls_thres_hi = 0x000FFFFF;
laserdad 0:e9ae48b7f6f6 57 ob1203.ls_thres_lo = 0;
laserdad 0:e9ae48b7f6f6 58 ob1203.ls_sai = LS_SAI_OFF;
laserdad 0:e9ae48b7f6f6 59 ob1203.ls_mode = RGB_MODE;
laserdad 0:e9ae48b7f6f6 60 ob1203.ls_en = LS_ON;
laserdad 14:ae0be10b73cd 61 //PS and PPG settings
laserdad 0:e9ae48b7f6f6 62 ob1203.ps_sai_en = PS_SAI_OFF;
laserdad 5:ebe305e08430 63 // ob1203.ps_sai_en = PS_SAI_ON;
laserdad 1:fb6b2b4d5d8a 64 if(mode)
laserdad 1:fb6b2b4d5d8a 65 {
laserdad 20:fcf071379cba 66 spo2 ? ob1203.ppg_ps_mode = SPO2_MODE : ob1203.ppg_ps_mode = HR_MODE;
laserdad 1:fb6b2b4d5d8a 67 }
laserdad 1:fb6b2b4d5d8a 68 else
laserdad 1:fb6b2b4d5d8a 69 {
laserdad 1:fb6b2b4d5d8a 70 ob1203.ppg_ps_mode = PS_MODE;
laserdad 1:fb6b2b4d5d8a 71 }
laserdad 22:e23b60520b6a 72 if (turn_off_prox_trim) {
laserdad 22:e23b60520b6a 73 ob1203.led1_trim = 0;
laserdad 22:e23b60520b6a 74 ob1203.led2_trim = 0;
laserdad 22:e23b60520b6a 75 }
laserdad 12:5de5f550e765 76 ob1203.ps_pulses = PS_PULSES(3);
laserdad 1:fb6b2b4d5d8a 77 // pc.printf("ps_pulses = %02X\r\n",ob1203.ps_pulses);
laserdad 7:3ed0f0522b43 78 ob1203.ps_pwidth = PS_PWIDTH(1);
laserdad 7:3ed0f0522b43 79 ob1203.ps_rate = PS_RATE(4);
laserdad 1:fb6b2b4d5d8a 80 // pc.printf("ps_rate = %02X\r\n",ob1203.ps_rate);
laserdad 12:5de5f550e765 81 ob1203.ps_avg_en = PS_AVG_OFF;
laserdad 0:e9ae48b7f6f6 82 ob1203.ps_can_ana = PS_CAN_ANA_0;
laserdad 14:ae0be10b73cd 83 ob1203.ps_digital_can = 150;
laserdad 0:e9ae48b7f6f6 84 ob1203.ps_hys_level = 0;
laserdad 14:ae0be10b73cd 85 meas_ps ? ob1203.ps_current = 0x1FF : ob1203.ps_current = 0x000;
laserdad 4:3aee2ca931b8 86 // ob1203.ps_current = 0;
laserdad 0:e9ae48b7f6f6 87 ob1203.ps_thres_hi = 0xFF;
laserdad 0:e9ae48b7f6f6 88 ob1203.ps_thres_lo = 0x00;
laserdad 0:e9ae48b7f6f6 89
laserdad 0:e9ae48b7f6f6 90 //interrupts
laserdad 0:e9ae48b7f6f6 91 ob1203.ls_int_sel = LS_INT_SEL_W;
laserdad 0:e9ae48b7f6f6 92 ob1203.ls_var_mode = LS_THRES_INT_MODE;
laserdad 0:e9ae48b7f6f6 93 ob1203.ls_int_en = LS_INT_ON;
laserdad 0:e9ae48b7f6f6 94 ob1203.ppg_ps_en = PPG_PS_ON;
laserdad 4:3aee2ca931b8 95
laserdad 18:b7226b560838 96 mode ? ob1203.ps_logic_mode = PS_INT_READ_CLEARS : ob1203.ps_logic_mode = PS_INT_LOGIC;
laserdad 0:e9ae48b7f6f6 97 ob1203.ps_int_en = PS_INT_ON;
laserdad 0:e9ae48b7f6f6 98 ob1203.ls_persist = LS_PERSIST(2);
laserdad 0:e9ae48b7f6f6 99 ob1203.ps_persist = PS_PERSIST(2);
laserdad 11:640cced1ee5d 100
laserdad 11:640cced1ee5d 101
laserdad 11:640cced1ee5d 102 //BIO SETTINGS
laserdad 4:3aee2ca931b8 103 //int
laserdad 4:3aee2ca931b8 104 if(afull)
laserdad 4:3aee2ca931b8 105 {
laserdad 4:3aee2ca931b8 106 ob1203.afull_int_en = AFULL_INT_ON;
laserdad 4:3aee2ca931b8 107 ob1203.ppg_int_en = PPG_INT_OFF;
laserdad 4:3aee2ca931b8 108 }
laserdad 4:3aee2ca931b8 109 else
laserdad 4:3aee2ca931b8 110 {
laserdad 4:3aee2ca931b8 111 ob1203.afull_int_en = AFULL_INT_OFF;
laserdad 4:3aee2ca931b8 112 ob1203.ppg_int_en = PPG_INT_ON;
laserdad 4:3aee2ca931b8 113 }
laserdad 0:e9ae48b7f6f6 114 //PPG
laserdad 22:e23b60520b6a 115 ob1203.ir_current = 0x0F; //max 1023. 3FF
laserdad 3:d3a1fc19bee6 116 if (spo2)
laserdad 3:d3a1fc19bee6 117 {
laserdad 4:3aee2ca931b8 118 // ob1203.r_current = 0x0FF;
laserdad 22:e23b60520b6a 119 ob1203.r_current = 0x07; //max 511. 1FF
laserdad 3:d3a1fc19bee6 120 }
laserdad 3:d3a1fc19bee6 121 else
laserdad 3:d3a1fc19bee6 122 {
laserdad 3:d3a1fc19bee6 123 ob1203.r_current = 0;
laserdad 3:d3a1fc19bee6 124 }
laserdad 22:e23b60520b6a 125
laserdad 10:7fbf298ee05f 126 ob1203.ppg_ps_gain = PPG_PS_GAIN_1;
laserdad 22:e23b60520b6a 127
laserdad 0:e9ae48b7f6f6 128 ob1203.ppg_pow_save = PPG_POW_SAVE_OFF;
laserdad 0:e9ae48b7f6f6 129 ob1203.led_flip = LED_FLIP_OFF;
laserdad 22:e23b60520b6a 130 //ob1203.led_flip = LED_FLIP_ON;
laserdad 11:640cced1ee5d 131 ob1203.ch1_can_ana = PPG_CH1_CAN(0);
laserdad 11:640cced1ee5d 132 ob1203.ch2_can_ana = PPG_CH2_CAN(0);
laserdad 14:ae0be10b73cd 133 //use rate 1 with pulse width 3 and average 4, or rate 3 with pulse width 4 and average 3 for 100 sps (50Hz basis) or 120 sps sample rate (60Hz basis)
laserdad 22:e23b60520b6a 134
laserdad 22:e23b60520b6a 135
laserdad 22:e23b60520b6a 136 //DEBUGGING******************************************************
laserdad 22:e23b60520b6a 137 ob1203.ppg_avg = PPG_AVG(0);
laserdad 22:e23b60520b6a 138 //ob1203.ppg_avg = PPG_AVG(4); //2^n averages
laserdad 22:e23b60520b6a 139
laserdad 22:e23b60520b6a 140 //DEGUGGING*****************************************************
laserdad 14:ae0be10b73cd 141 ob1203.ppg_rate = PPG_RATE(1);
laserdad 22:e23b60520b6a 142 //ob1203.ppg_rate = PPG_RATE(6);
laserdad 22:e23b60520b6a 143
laserdad 12:5de5f550e765 144 ob1203.ppg_pwidth = PPG_PWIDTH(3);
laserdad 22:e23b60520b6a 145 // ob1203.ppg_freq = PPG_FREQ_50HZ;
laserdad 22:e23b60520b6a 146 ob1203.ppg_freq = PPG_FREQ_PRODUCTION;
laserdad 14:ae0be10b73cd 147 ob1203.bio_trim = 3; //max 3 --this dims the ADC sensitivity, but reduces noise
laserdad 14:ae0be10b73cd 148 ob1203.led_trim = 0x00; //can use to overwrite trim setting and max out the current
laserdad 14:ae0be10b73cd 149 ob1203.ppg_LED_settling = PPG_LED_SETTLING(2); //hidden regstier for adjusting LED setting time (not a factor for noise)
laserdad 14:ae0be10b73cd 150 ob1203.ppg_ALC_track = PPG_ALC_TRACK(2); //hidden register for adjusting ALC track and hold time (not a factor for noise)
laserdad 14:ae0be10b73cd 151 ob1203.diff = DIFF_ON; //hidden register for turning off subtraction of residual ambient light after ALC
laserdad 14:ae0be10b73cd 152 ob1203.alc = ALC_ON; //hidden register for turning off ambient light cancelleation track and hold circuit
laserdad 14:ae0be10b73cd 153 ob1203.sig_out = SIGNAL_OUT; //hidden register for selecting ambient sample or LED sample if DIFF is off
laserdad 0:e9ae48b7f6f6 154 ob1203.fifo_rollover_en = FIFO_ROLL_ON;
laserdad 13:5ce84c68066e 155 ob1203.fifo_afull_advance_warning = AFULL_ADVANCE_WARNING(0x0F); //warn as quickly as possible (after 17 samples with 0x0F)
laserdad 13:5ce84c68066e 156
laserdad 14:ae0be10b73cd 157 //run initialization according to user compile settings
laserdad 14:ae0be10b73cd 158
laserdad 0:e9ae48b7f6f6 159 if(mode)
laserdad 0:e9ae48b7f6f6 160 {
laserdad 3:d3a1fc19bee6 161 if(spo2)
laserdad 3:d3a1fc19bee6 162 {
laserdad 3:d3a1fc19bee6 163 ob1203.init_spo2();
laserdad 3:d3a1fc19bee6 164 }
laserdad 3:d3a1fc19bee6 165 else
laserdad 3:d3a1fc19bee6 166 {
laserdad 3:d3a1fc19bee6 167 ob1203.init_hr();
laserdad 3:d3a1fc19bee6 168 }
laserdad 0:e9ae48b7f6f6 169 }
laserdad 0:e9ae48b7f6f6 170 else
laserdad 0:e9ae48b7f6f6 171 {
laserdad 5:ebe305e08430 172 meas_ps ? ob1203.init_ps_rgb() : ob1203.init_rgb();
laserdad 0:e9ae48b7f6f6 173 }
laserdad 14:ae0be10b73cd 174 if(trim_oscillator)
laserdad 14:ae0be10b73cd 175 ob1203.setOscTrim();
laserdad 14:ae0be10b73cd 176
laserdad 0:e9ae48b7f6f6 177 }
laserdad 0:e9ae48b7f6f6 178
laserdad 1:fb6b2b4d5d8a 179 void regDump(uint8_t Addr, uint8_t startByte, uint8_t endByte)
laserdad 1:fb6b2b4d5d8a 180 {
laserdad 1:fb6b2b4d5d8a 181 /*print the values of up to 20 registers--buffer limit, e.g.*/
laserdad 1:fb6b2b4d5d8a 182 char regData[20];
laserdad 1:fb6b2b4d5d8a 183 int numBytes;
laserdad 1:fb6b2b4d5d8a 184 if (endByte>=startByte) {
laserdad 1:fb6b2b4d5d8a 185 numBytes = (endByte-startByte+1) < 20 ? (endByte-startByte+1) : 20;
laserdad 1:fb6b2b4d5d8a 186 } else {
laserdad 1:fb6b2b4d5d8a 187 numBytes=1;
laserdad 1:fb6b2b4d5d8a 188 }
laserdad 1:fb6b2b4d5d8a 189
laserdad 1:fb6b2b4d5d8a 190 regData[0] = startByte;
laserdad 1:fb6b2b4d5d8a 191 i2c.write(Addr,regData,1,true);
laserdad 1:fb6b2b4d5d8a 192 i2c.read(Addr, regData, numBytes);
laserdad 1:fb6b2b4d5d8a 193 for(int n=0; n<numBytes; n++) {
laserdad 1:fb6b2b4d5d8a 194 pc.printf("%02X, %02X \r\n", startByte+n, regData[n]);
laserdad 1:fb6b2b4d5d8a 195 }
laserdad 1:fb6b2b4d5d8a 196 }
laserdad 1:fb6b2b4d5d8a 197
laserdad 0:e9ae48b7f6f6 198
laserdad 0:e9ae48b7f6f6 199 void intEvent(void)
laserdad 0:e9ae48b7f6f6 200 {
laserdad 0:e9ae48b7f6f6 201 intFlagged = 1;
laserdad 0:e9ae48b7f6f6 202 }
laserdad 0:e9ae48b7f6f6 203
laserdad 0:e9ae48b7f6f6 204 int main()
laserdad 14:ae0be10b73cd 205 /*This program is messy bacause it allows several different print options and interrupt modes
laserdad 14:ae0be10b73cd 206 Most of the variables are associated with an optional FIR filter to make data pretty.
laserdad 14:ae0be10b73cd 207 */
laserdad 0:e9ae48b7f6f6 208 {
laserdad 4:3aee2ca931b8 209 int numInts = 0;
laserdad 10:7fbf298ee05f 210 uint32_t running_avg = 10;
laserdad 10:7fbf298ee05f 211 uint32_t ps_running_avg = 100;
laserdad 7:3ed0f0522b43 212 uint32_t ps_avg_ptr = 0;
laserdad 3:d3a1fc19bee6 213 char avg_ptr = 0;
laserdad 4:3aee2ca931b8 214 int baseline_ptr = 0;
laserdad 10:7fbf298ee05f 215 uint32_t running_baseline = 240;
laserdad 3:d3a1fc19bee6 216 int first = 1;
laserdad 3:d3a1fc19bee6 217 uint32_t IRavg = 0;
laserdad 3:d3a1fc19bee6 218 uint32_t Ravg = 0;
laserdad 3:d3a1fc19bee6 219 uint32_t IRprev = 0;
laserdad 3:d3a1fc19bee6 220 uint32_t Rprev = 0;
laserdad 3:d3a1fc19bee6 221 uint32_t prevAvg = 0;
laserdad 3:d3a1fc19bee6 222 uint32_t IR_avg_buffer[running_avg];
laserdad 3:d3a1fc19bee6 223 uint32_t R_avg_buffer[running_avg];
laserdad 4:3aee2ca931b8 224 uint32_t IR_baseline_buffer[running_baseline];
laserdad 4:3aee2ca931b8 225 uint32_t R_baseline_buffer[running_baseline];
laserdad 4:3aee2ca931b8 226 uint32_t IRbaseline_prev=0;;
laserdad 4:3aee2ca931b8 227 uint32_t Rbaseline_prev=0;;
laserdad 4:3aee2ca931b8 228 uint32_t IRbaseline=0;
laserdad 4:3aee2ca931b8 229 uint32_t Rbaseline=0;
laserdad 4:3aee2ca931b8 230 uint32_t prevBaseline=0;
laserdad 7:3ed0f0522b43 231 uint32_t PSavg = 0;
laserdad 7:3ed0f0522b43 232 uint32_t PSprev = 0;
laserdad 7:3ed0f0522b43 233 uint32_t PS_avg_buffer[ps_running_avg];
laserdad 7:3ed0f0522b43 234
laserdad 13:5ce84c68066e 235 bool update = 0;
laserdad 19:6e584392d4a7 236
laserdad 14:ae0be10b73cd 237
laserdad 7:3ed0f0522b43 238 for (int n=0;n<ps_running_avg;n++)
laserdad 7:3ed0f0522b43 239 {
laserdad 7:3ed0f0522b43 240 PS_avg_buffer[n] =0;
laserdad 7:3ed0f0522b43 241 }
laserdad 7:3ed0f0522b43 242
laserdad 14:ae0be10b73cd 243 i2c.frequency( 400000 ); //always use max speed I2C
laserdad 0:e9ae48b7f6f6 244 char valid;
laserdad 14:ae0be10b73cd 245 uint32_t ps_ls_data[7]; //array for storing parsed samples
laserdad 20:fcf071379cba 246 char samples2Read = 2; //FIFO samples, e.g. 4 samples * 3 bytes = 12 bytes (or 2 SpO2 samples)
laserdad 2:ee175f471ecb 247 char fifoBuffer[samples2Read*3];
laserdad 0:e9ae48b7f6f6 248 uint32_t ppgData[samples2Read];
laserdad 0:e9ae48b7f6f6 249
laserdad 1:fb6b2b4d5d8a 250
laserdad 1:fb6b2b4d5d8a 251 pc.printf("register settings\r\n");
laserdad 1:fb6b2b4d5d8a 252 regDump(OB1203_ADDR,0,19);
laserdad 1:fb6b2b4d5d8a 253 regDump(OB1203_ADDR,20,39);
laserdad 1:fb6b2b4d5d8a 254 regDump(OB1203_ADDR,40,59);
laserdad 1:fb6b2b4d5d8a 255 regDump(OB1203_ADDR,60,77);
laserdad 1:fb6b2b4d5d8a 256
laserdad 1:fb6b2b4d5d8a 257 pc.printf("do initial config\r\n");
laserdad 14:ae0be10b73cd 258 defaultConfig(); //do the ASIC configuration now
laserdad 1:fb6b2b4d5d8a 259
laserdad 1:fb6b2b4d5d8a 260 pc.printf("print new register config\r\n");
laserdad 1:fb6b2b4d5d8a 261 regDump(OB1203_ADDR,0,19);
laserdad 1:fb6b2b4d5d8a 262 regDump(OB1203_ADDR,20,39);
laserdad 1:fb6b2b4d5d8a 263 regDump(OB1203_ADDR,40,59);
laserdad 1:fb6b2b4d5d8a 264 regDump(OB1203_ADDR,60,77);
laserdad 1:fb6b2b4d5d8a 265
laserdad 0:e9ae48b7f6f6 266
laserdad 14:ae0be10b73cd 267 intb.fall(&intEvent); //attach a falling interrupt
laserdad 14:ae0be10b73cd 268 t.start(); //start microsecond timer for datalogging
laserdad 5:ebe305e08430 269
laserdad 0:e9ae48b7f6f6 270 while(1)
laserdad 0:e9ae48b7f6f6 271 {
laserdad 14:ae0be10b73cd 272 if(mode) //PPG case*******************************************************
laserdad 0:e9ae48b7f6f6 273 {
laserdad 14:ae0be10b73cd 274 if(!intb.read()) //check the intb to see if it is low (or could check variable set by ISR here)
laserdad 2:ee175f471ecb 275 {
laserdad 14:ae0be10b73cd 276 if(!afull) //if you are using sample completion interrupts
laserdad 4:3aee2ca931b8 277 {
laserdad 14:ae0be10b73cd 278 numInts++; //increment counter to get data every so many interrupts if ppg new data interrupt mode
laserdad 4:3aee2ca931b8 279 }
laserdad 4:3aee2ca931b8 280 else
laserdad 4:3aee2ca931b8 281 {
laserdad 4:3aee2ca931b8 282 numInts = samples2Read;
laserdad 4:3aee2ca931b8 283 }
laserdad 2:ee175f471ecb 284 intFlagged = 1;
laserdad 4:3aee2ca931b8 285 if( (numInts < samples2Read) && !afull)
laserdad 4:3aee2ca931b8 286 {
laserdad 14:ae0be10b73cd 287 ob1203.get_status(); //clear interrupt--not time to get data yet
laserdad 4:3aee2ca931b8 288 }
laserdad 14:ae0be10b73cd 289 else if(intFlagged && (numInts==samples2Read) ) //time to get data
laserdad 3:d3a1fc19bee6 290 {
laserdad 4:3aee2ca931b8 291 numInts = 0;
laserdad 4:3aee2ca931b8 292 ob1203.getFifoSamples(samples2Read,fifoBuffer);
laserdad 4:3aee2ca931b8 293 // for (int n=0;n<samples2Read*3;n++)
laserdad 4:3aee2ca931b8 294 // {
laserdad 4:3aee2ca931b8 295 // pc.printf("%02X ",fifoBuffer[n]);
laserdad 4:3aee2ca931b8 296 // }
laserdad 4:3aee2ca931b8 297 // pc.printf("\r\n");
laserdad 4:3aee2ca931b8 298 ob1203.parseFifoSamples(samples2Read,fifoBuffer,ppgData);
laserdad 4:3aee2ca931b8 299 // for (int n=0;n<samples2Read;n++)
laserdad 4:3aee2ca931b8 300 // {
laserdad 4:3aee2ca931b8 301 // pc.printf("%d ",ppgData[n]);
laserdad 4:3aee2ca931b8 302 // }
laserdad 4:3aee2ca931b8 303 // pc.printf("\r\n");
laserdad 4:3aee2ca931b8 304 if(first) //populate average and baseline buffers the first time we run
laserdad 3:d3a1fc19bee6 305 {
laserdad 4:3aee2ca931b8 306 for(int n=0;n<running_avg;n++)
laserdad 4:3aee2ca931b8 307 {
laserdad 4:3aee2ca931b8 308 IR_avg_buffer[n] = ppgData[0];
laserdad 4:3aee2ca931b8 309 IRavg += IR_avg_buffer[n];
laserdad 4:3aee2ca931b8 310 if(spo2)
laserdad 4:3aee2ca931b8 311 {
laserdad 4:3aee2ca931b8 312 R_avg_buffer[n] = ppgData[1];
laserdad 4:3aee2ca931b8 313 Ravg += R_avg_buffer[n];
laserdad 4:3aee2ca931b8 314 }
laserdad 4:3aee2ca931b8 315
laserdad 4:3aee2ca931b8 316 }
laserdad 4:3aee2ca931b8 317 for( int n=0;n<running_baseline;n++)
laserdad 4:3aee2ca931b8 318 {
laserdad 4:3aee2ca931b8 319 IR_baseline_buffer[n] = 0;
laserdad 4:3aee2ca931b8 320 if(spo2)
laserdad 4:3aee2ca931b8 321 {
laserdad 4:3aee2ca931b8 322 R_baseline_buffer[n] = 0;
laserdad 4:3aee2ca931b8 323 }
laserdad 4:3aee2ca931b8 324 }
laserdad 4:3aee2ca931b8 325 first = 0;
laserdad 13:5ce84c68066e 326 }//end if first
laserdad 13:5ce84c68066e 327
laserdad 4:3aee2ca931b8 328 for (int n=0;n<samples2Read/2;n++)
laserdad 4:3aee2ca931b8 329 {
laserdad 4:3aee2ca931b8 330 ( avg_ptr+1 == running_avg ) ? avg_ptr = 0 : avg_ptr++;
laserdad 4:3aee2ca931b8 331 ( baseline_ptr+1 == running_baseline) ? baseline_ptr = 0 : baseline_ptr++;
laserdad 4:3aee2ca931b8 332 IRprev = IR_avg_buffer[avg_ptr]; //load the sample you are about to write over
laserdad 4:3aee2ca931b8 333 IR_avg_buffer[avg_ptr] = ppgData[2*n]; //load the new sample in the buffer
laserdad 4:3aee2ca931b8 334 IRavg += (IR_avg_buffer[avg_ptr] - IRprev); //update the average by removing the old sample and adding the new
laserdad 4:3aee2ca931b8 335
laserdad 4:3aee2ca931b8 336 IRbaseline_prev = IR_baseline_buffer[baseline_ptr]; //load the sample you are about to write over
laserdad 4:3aee2ca931b8 337 IR_baseline_buffer[baseline_ptr] = ppgData[2*n]; //load the new sample in the buffer
laserdad 4:3aee2ca931b8 338 IRbaseline += (IR_baseline_buffer[baseline_ptr] - IRbaseline_prev); //update the average by removing the old sample and adding the new
laserdad 4:3aee2ca931b8 339
laserdad 14:ae0be10b73cd 340 if(spo2) //print two columsn of data
laserdad 3:d3a1fc19bee6 341 {
laserdad 4:3aee2ca931b8 342 Rprev = R_avg_buffer[avg_ptr];
laserdad 4:3aee2ca931b8 343 R_avg_buffer[avg_ptr] = ppgData[2*n+1];
laserdad 4:3aee2ca931b8 344 Ravg += (R_avg_buffer[avg_ptr] - Rprev);
IDTsanjoseuser 8:21738f9c5835 345
laserdad 4:3aee2ca931b8 346 // pc.printf("%d, %d, %d, %d\r\n",IRavg/running_avg,Ravg/running_avg, IR_avg_buffer[avg_ptr],R_avg_buffer[avg_ptr]);
laserdad 4:3aee2ca931b8 347
laserdad 4:3aee2ca931b8 348 Rbaseline_prev = R_baseline_buffer[baseline_ptr];
laserdad 4:3aee2ca931b8 349 R_baseline_buffer[baseline_ptr] = ppgData[2*n+1];
laserdad 4:3aee2ca931b8 350 Rbaseline += (R_baseline_buffer[baseline_ptr] - Rbaseline_prev);
laserdad 4:3aee2ca931b8 351
laserdad 13:5ce84c68066e 352 if(printAvg)
laserdad 13:5ce84c68066e 353 {
IDTsanjoseuser 8:21738f9c5835 354 //PRINT AVG DATA
laserdad 13:5ce84c68066e 355 pc.printf("%d,%d,%d\r\n",t.read_us(),IRavg/running_avg,Ravg/running_avg);
laserdad 21:97a0d4167902 356 //pc.printf("%d,%d\r\n",IRavg/running_avg,Ravg/running_avg);
laserdad 4:3aee2ca931b8 357 // pc.printf("%d,%d\r\n",IRavg/running_avg-IRbaseline/running_baseline, Ravg/running_avg-Rbaseline/running_baseline);
laserdad 4:3aee2ca931b8 358 // pc.printf("%d,%d,%d,%d\r\n",Ravg/running_avg,Rbaseline/running_baseline,Rbaseline_prev,Ravg/running_avg-Rbaseline/running_baseline);
laserdad 13:5ce84c68066e 359 }
laserdad 13:5ce84c68066e 360 else
laserdad 13:5ce84c68066e 361 {
laserdad 13:5ce84c68066e 362 //PRINT RAW DATA
laserdad 14:ae0be10b73cd 363 if(printCurrent)
laserdad 14:ae0be10b73cd 364 {
laserdad 14:ae0be10b73cd 365 pc.printf("%d, %d, %d, %d, %d\r\n",t.read_us(),ppgData[2*n],ppgData[2*n+1],ob1203.ir_current,ob1203.r_current); //print with us counter time stamp (use only with slower data rates or averaging as this slows down the data printing);
laserdad 14:ae0be10b73cd 366 }
laserdad 14:ae0be10b73cd 367 else
laserdad 14:ae0be10b73cd 368 {
laserdad 14:ae0be10b73cd 369 pc.printf("%d, %d, %d\r\n",t.read_us(),ppgData[2*n],ppgData[2*n+1]); //print with us counter time stamp (use only with slower data rates or averaging as this slows down the data printing);
laserdad 13:5ce84c68066e 370 // pc.printf("%d, %d\r\n",ppgData[2*n],ppgData[2*n+1]); //print without us timer (faster)
laserdad 14:ae0be10b73cd 371 }
laserdad 13:5ce84c68066e 372 }
laserdad 13:5ce84c68066e 373 }//end SpO2 case
laserdad 14:ae0be10b73cd 374 else //HR mode print one column of data
laserdad 4:3aee2ca931b8 375 {
laserdad 4:3aee2ca931b8 376 ( avg_ptr+1 == running_avg ) ? avg_ptr = 0 : avg_ptr++;
laserdad 4:3aee2ca931b8 377 ( baseline_ptr+1 == running_baseline) ? baseline_ptr = 0 : baseline_ptr++;
laserdad 4:3aee2ca931b8 378 IRprev = IR_avg_buffer[avg_ptr];
laserdad 4:3aee2ca931b8 379 IR_avg_buffer[avg_ptr] = ppgData[2*n+1];
laserdad 4:3aee2ca931b8 380 prevAvg = IRavg;
laserdad 4:3aee2ca931b8 381 IRavg += (IR_avg_buffer[avg_ptr] - IRprev);
laserdad 4:3aee2ca931b8 382
laserdad 4:3aee2ca931b8 383 IRbaseline_prev = IR_baseline_buffer[baseline_ptr]; //load the sample you are about to write over
laserdad 4:3aee2ca931b8 384 IR_baseline_buffer[baseline_ptr] = ppgData[2*n]; //load the new sample in the buffer
laserdad 4:3aee2ca931b8 385 prevBaseline = IRbaseline;
laserdad 4:3aee2ca931b8 386 IRbaseline += (IR_baseline_buffer[baseline_ptr] - IRbaseline_prev); //update the average by removing the old sample and adding the new
IDTsanjoseuser 8:21738f9c5835 387
laserdad 4:3aee2ca931b8 388
laserdad 13:5ce84c68066e 389 if(printAvg)
laserdad 13:5ce84c68066e 390 {
IDTsanjoseuser 8:21738f9c5835 391 //PRINT AVG DATA
laserdad 13:5ce84c68066e 392 pc.printf("%d\r\n%d\r\n",prevAvg/running_avg-prevBaseline/running_baseline,IRavg/running_avg-IRbaseline/running_baseline);
laserdad 13:5ce84c68066e 393 }
laserdad 13:5ce84c68066e 394 else
laserdad 13:5ce84c68066e 395 {
laserdad 13:5ce84c68066e 396 //PRINT RAW DATA
laserdad 13:5ce84c68066e 397 pc.printf("%d\r\n%d\r\n",ppgData[2*n],ppgData[2*n+1]);
laserdad 13:5ce84c68066e 398 // pc.printf("%d, %d, %d\r\n",t.read_us(),ppgData[2*n],ppgData[2*n+1]); //print with us counter time stamp (use only with slower data rates or averaging as this slows down the data printing);
laserdad 13:5ce84c68066e 399
laserdad 13:5ce84c68066e 400 }
laserdad 13:5ce84c68066e 401 }//HR case
laserdad 13:5ce84c68066e 402 if(n+1==samples2Read/2)
laserdad 13:5ce84c68066e 403 {
laserdad 19:6e584392d4a7 404 if(irAGC)
laserdad 19:6e584392d4a7 405 {
laserdad 19:6e584392d4a7 406 ob1203.do_agc(ppgData[2*n],0);
laserdad 22:e23b60520b6a 407 }//end IR AGC case
laserdad 13:5ce84c68066e 408 if(spo2 && redAGC)
laserdad 13:5ce84c68066e 409 {
laserdad 19:6e584392d4a7 410 ob1203.do_agc(ppgData[2*n+1],1);
laserdad 19:6e584392d4a7 411 }//enr R AGC case
laserdad 19:6e584392d4a7 412 if(ob1203.update)
laserdad 19:6e584392d4a7 413 {
laserdad 19:6e584392d4a7 414 ob1203.setPPGcurrent();
laserdad 19:6e584392d4a7 415 ob1203.resetFIFO();
laserdad 19:6e584392d4a7 416 ob1203.update=0;
laserdad 19:6e584392d4a7 417 }
laserdad 4:3aee2ca931b8 418 }
laserdad 13:5ce84c68066e 419 }//end sample loop
laserdad 13:5ce84c68066e 420
laserdad 13:5ce84c68066e 421
laserdad 13:5ce84c68066e 422
laserdad 13:5ce84c68066e 423 intFlagged = 0;
laserdad 13:5ce84c68066e 424
laserdad 13:5ce84c68066e 425 }//end if time to read samples
laserdad 4:3aee2ca931b8 426 } //end if !intb
laserdad 14:ae0be10b73cd 427 }// end mode (PPG case)
laserdad 14:ae0be10b73cd 428 //*********************************************************************
laserdad 14:ae0be10b73cd 429 else //LS and PS measurement case
laserdad 0:e9ae48b7f6f6 430 {
laserdad 1:fb6b2b4d5d8a 431 wait_ms(sample_delay);
laserdad 5:ebe305e08430 432 if( meas_ps ? ob1203.psIsNew() : ob1203.lsIsNew() )
laserdad 1:fb6b2b4d5d8a 433 {
laserdad 5:ebe305e08430 434 meas_ps ? valid = ob1203.get_ps_ls_data(ps_ls_data) : valid = ob1203.get_ls_data(ps_ls_data);
laserdad 7:3ed0f0522b43 435 if(meas_ps)
laserdad 7:3ed0f0522b43 436 {
laserdad 7:3ed0f0522b43 437 ( ps_avg_ptr+1 == ps_running_avg ) ? ps_avg_ptr = 0 : ps_avg_ptr++;
laserdad 7:3ed0f0522b43 438 PSprev = PS_avg_buffer[ps_avg_ptr]; //load the sample you are about to write over
laserdad 7:3ed0f0522b43 439 PS_avg_buffer[ps_avg_ptr] = ps_ls_data[0]; //load the new sample in the buffer
laserdad 7:3ed0f0522b43 440 PSavg += (PS_avg_buffer[ps_avg_ptr] - PSprev); //update the average by removing the old sample and adding the new
laserdad 7:3ed0f0522b43 441 // pc.printf("%d %d %d %d %d ",ps_avg_ptr, PSprev, PS_avg_buffer[ps_avg_ptr],ps_ls_data[0],PSavg);
laserdad 7:3ed0f0522b43 442 }
laserdad 5:ebe305e08430 443 if (meas_temp)
laserdad 5:ebe305e08430 444 {
laserdad 5:ebe305e08430 445 ob1203.setMainConfig();
laserdad 5:ebe305e08430 446 }
laserdad 12:5de5f550e765 447 pc.printf("%d, %d %d %d %d %d\r\n",ps_ls_data[0],ps_ls_data[1],ps_ls_data[2],ps_ls_data[3],ps_ls_data[4],ps_ls_data[5]);
laserdad 12:5de5f550e765 448 // pc.printf("%d, %d %d %d %d %d %d %d\r\n",(PSavg/ps_running_avg),ps_ls_data[0],ps_ls_data[1],ps_ls_data[2],ps_ls_data[3],ps_ls_data[4],ps_ls_data[5],ps_ls_data[6]);
laserdad 4:3aee2ca931b8 449
laserdad 1:fb6b2b4d5d8a 450 }
laserdad 2:ee175f471ecb 451 // else
laserdad 2:ee175f471ecb 452 // {
laserdad 2:ee175f471ecb 453 // pc.printf("status = %04X\r\n",ob1203.get_status() );
laserdad 2:ee175f471ecb 454 // }
laserdad 0:e9ae48b7f6f6 455 }
laserdad 1:fb6b2b4d5d8a 456 }//end while
laserdad 1:fb6b2b4d5d8a 457 }//end main