IDT Optical Sensors / Mbed 2 deprecated OB1203_IDT

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Dependencies:   mbed OB1203_example_driver

main.cpp@16:0a113303c3ed, 2018-09-28 (annotated)

Committer:
laserdad
Date:
Fri Sep 28 21:55:21 2018 +0000
Revision:
16:0a113303c3ed
Parent:
14:ae0be10b73cd
Child:
17:81a9df351dcd
fixed setPSThreshold. changed default PS_INT mode to LOGIC

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 4:3aee2ca931b8 4 //#include "SoftI2C.h"
laserdad 0:e9ae48b7f6f6 5
laserdad 14:ae0be10b73cd 6
laserdad 14:ae0be10b73cd 7 //normal
laserdad 14:ae0be10b73cd 8 I2C i2c(I2C_SDA,I2C_SCL); //instantiate an i2c object from its class
laserdad 0:e9ae48b7f6f6 9 #define intb_pin D3
laserdad 0:e9ae48b7f6f6 10
laserdad 14:ae0be10b73cd 11 //slave board//
laserdad 14:ae0be10b73cd 12 //I2C i2c(D12,PA_7);
laserdad 14:ae0be10b73cd 13 //#define intb_pin D10
laserdad 14:ae0be10b73cd 14
laserdad 14:ae0be10b73cd 15 InterruptIn intb(intb_pin); //declare an interrupt pin for INTB
laserdad 0:e9ae48b7f6f6 16
laserdad 14:ae0be10b73cd 17 //setting three 3 pins high to function as pullups for SDA, SCL and INTB
laserdad 14:ae0be10b73cd 18 //Connect these pins to SDA, SCL and INTB by 2.7K resistors.
laserdad 14:ae0be10b73cd 19 //5K resistors also work usually
laserdad 16:0a113303c3ed 20 DigitalOut sda_pullup(D10,1);
laserdad 16:0a113303c3ed 21 DigitalOut scl_pullup(D11,1);
laserdad 16:0a113303c3ed 22 DigitalOut intb_pullup(D12,1);
laserdad 13:5ce84c68066e 23
laserdad 14:ae0be10b73cd 24 OB1203 ob1203(&i2c); //instantiate the OB1203 object from its class and pass i2c object
laserdad 14:ae0be10b73cd 25 Serial pc(USBTX, USBRX,256000); //create a serial port for printing data to a pc
laserdad 14:ae0be10b73cd 26 Timer t; //use a microsecond timer for time stamping data
laserdad 0:e9ae48b7f6f6 27
laserdad 1:fb6b2b4d5d8a 28
laserdad 6:aaa2f8fb5123 29 //USER CONFIGURABLE*********
laserdad 16:0a113303c3ed 30 bool mode = 1; //0 for PS_LS, 1 for PPG (ignores PS, LS and temp)
laserdad 7:3ed0f0522b43 31 bool meas_ps = 1;
laserdad 12:5de5f550e765 32 bool spo2 = 1; //0 for HR, 1 for SpO2
laserdad 4:3aee2ca931b8 33 bool afull = 1; //use Afull interrupt--otherwise PPG new data interrupt
laserdad 14:ae0be10b73cd 34 bool meas_temp = 0;
laserdad 13:5ce84c68066e 35 bool printAvg = 0; //default 0 print raw data
laserdad 13:5ce84c68066e 36 bool redAGC = 1;
laserdad 13:5ce84c68066e 37 bool IRAGC = 1;
laserdad 14:ae0be10b73cd 38 bool trim_oscillator = 1;
laserdad 14:ae0be10b73cd 39 bool printCurrent = 1;
laserdad 6:aaa2f8fb5123 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 3:d3a1fc19bee6 66 if (spo2)
laserdad 3:d3a1fc19bee6 67 {
laserdad 3:d3a1fc19bee6 68 ob1203.ppg_ps_mode = SPO2_MODE;
laserdad 3:d3a1fc19bee6 69 }
laserdad 3:d3a1fc19bee6 70 else
laserdad 3:d3a1fc19bee6 71 {
laserdad 3:d3a1fc19bee6 72 ob1203.ppg_ps_mode = HR_MODE;
laserdad 3:d3a1fc19bee6 73 }
laserdad 3:d3a1fc19bee6 74
laserdad 1:fb6b2b4d5d8a 75 }
laserdad 1:fb6b2b4d5d8a 76 else
laserdad 1:fb6b2b4d5d8a 77 {
laserdad 1:fb6b2b4d5d8a 78 ob1203.ppg_ps_mode = PS_MODE;
laserdad 1:fb6b2b4d5d8a 79 }
laserdad 12:5de5f550e765 80 ob1203.ps_pulses = PS_PULSES(3);
laserdad 1:fb6b2b4d5d8a 81 // pc.printf("ps_pulses = %02X\r\n",ob1203.ps_pulses);
laserdad 7:3ed0f0522b43 82 ob1203.ps_pwidth = PS_PWIDTH(1);
laserdad 7:3ed0f0522b43 83 ob1203.ps_rate = PS_RATE(4);
laserdad 1:fb6b2b4d5d8a 84 // pc.printf("ps_rate = %02X\r\n",ob1203.ps_rate);
laserdad 12:5de5f550e765 85 ob1203.ps_avg_en = PS_AVG_OFF;
laserdad 0:e9ae48b7f6f6 86 ob1203.ps_can_ana = PS_CAN_ANA_0;
laserdad 14:ae0be10b73cd 87 ob1203.ps_digital_can = 150;
laserdad 0:e9ae48b7f6f6 88 ob1203.ps_hys_level = 0;
laserdad 14:ae0be10b73cd 89 meas_ps ? ob1203.ps_current = 0x1FF : ob1203.ps_current = 0x000;
laserdad 4:3aee2ca931b8 90 // ob1203.ps_current = 0;
laserdad 16:0a113303c3ed 91 //ob1203.ps_thres_hi = 0xFF;
laserdad 16:0a113303c3ed 92 //ob1203.ps_thres_lo = 0x00;
laserdad 16:0a113303c3ed 93
laserdad 16:0a113303c3ed 94 ob1203.ps_thres_hi = 2000;
laserdad 16:0a113303c3ed 95 ob1203.ps_thres_lo = 1000;
laserdad 16:0a113303c3ed 96
laserdad 0:e9ae48b7f6f6 97
laserdad 0:e9ae48b7f6f6 98 //interrupts
laserdad 0:e9ae48b7f6f6 99 ob1203.ls_int_sel = LS_INT_SEL_W;
laserdad 0:e9ae48b7f6f6 100 ob1203.ls_var_mode = LS_THRES_INT_MODE;
laserdad 16:0a113303c3ed 101 //ob1203.ls_int_en = LS_INT_ON;
laserdad 16:0a113303c3ed 102 ob1203.ls_int_en = LS_INT_OFF;
laserdad 16:0a113303c3ed 103
laserdad 16:0a113303c3ed 104 ob1203.ppg_ps_en = PPG_PS_ON; //enable measurements
laserdad 4:3aee2ca931b8 105
laserdad 0:e9ae48b7f6f6 106 ob1203.ps_logic_mode = PS_INT_READ_CLEARS;
laserdad 0:e9ae48b7f6f6 107 ob1203.ps_int_en = PS_INT_ON;
laserdad 0:e9ae48b7f6f6 108 ob1203.ls_persist = LS_PERSIST(2);
laserdad 0:e9ae48b7f6f6 109 ob1203.ps_persist = PS_PERSIST(2);
laserdad 11:640cced1ee5d 110
laserdad 11:640cced1ee5d 111
laserdad 11:640cced1ee5d 112 //BIO SETTINGS
laserdad 4:3aee2ca931b8 113 //int
laserdad 4:3aee2ca931b8 114 if(afull)
laserdad 4:3aee2ca931b8 115 {
laserdad 4:3aee2ca931b8 116 ob1203.afull_int_en = AFULL_INT_ON;
laserdad 4:3aee2ca931b8 117 ob1203.ppg_int_en = PPG_INT_OFF;
laserdad 4:3aee2ca931b8 118 }
laserdad 4:3aee2ca931b8 119 else
laserdad 4:3aee2ca931b8 120 {
laserdad 4:3aee2ca931b8 121 ob1203.afull_int_en = AFULL_INT_OFF;
laserdad 4:3aee2ca931b8 122 ob1203.ppg_int_en = PPG_INT_ON;
laserdad 4:3aee2ca931b8 123 }
laserdad 0:e9ae48b7f6f6 124 //PPG
laserdad 13:5ce84c68066e 125 ob1203.ir_current = 0x1AF; //max 1023. 3FF
laserdad 3:d3a1fc19bee6 126 if (spo2)
laserdad 3:d3a1fc19bee6 127 {
laserdad 4:3aee2ca931b8 128 // ob1203.r_current = 0x0FF;
laserdad 13:5ce84c68066e 129 ob1203.r_current = 0x1AF; //max 511. 1FF
laserdad 3:d3a1fc19bee6 130 }
laserdad 3:d3a1fc19bee6 131 else
laserdad 3:d3a1fc19bee6 132 {
laserdad 3:d3a1fc19bee6 133 ob1203.r_current = 0;
laserdad 3:d3a1fc19bee6 134 }
laserdad 10:7fbf298ee05f 135 ob1203.ppg_ps_gain = PPG_PS_GAIN_1;
laserdad 0:e9ae48b7f6f6 136 ob1203.ppg_pow_save = PPG_POW_SAVE_OFF;
laserdad 0:e9ae48b7f6f6 137 ob1203.led_flip = LED_FLIP_OFF;
laserdad 11:640cced1ee5d 138 ob1203.ch1_can_ana = PPG_CH1_CAN(0);
laserdad 11:640cced1ee5d 139 ob1203.ch2_can_ana = PPG_CH2_CAN(0);
laserdad 14:ae0be10b73cd 140 //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 14:ae0be10b73cd 141 ob1203.ppg_avg = PPG_AVG(4); //2^n averages
laserdad 14:ae0be10b73cd 142 ob1203.ppg_rate = PPG_RATE(1);
laserdad 12:5de5f550e765 143 ob1203.ppg_pwidth = PPG_PWIDTH(3);
laserdad 12:5de5f550e765 144 ob1203.ppg_freq = PPG_FREQ_50HZ;
laserdad 12:5de5f550e765 145 // ob1203.ppg_freq = PPG_FREQ_60HZ;
laserdad 14:ae0be10b73cd 146 ob1203.bio_trim = 3; //max 3 --this dims the ADC sensitivity, but reduces noise
laserdad 14:ae0be10b73cd 147 ob1203.led_trim = 0x00; //can use to overwrite trim setting and max out the current
laserdad 14:ae0be10b73cd 148 ob1203.ppg_LED_settling = PPG_LED_SETTLING(2); //hidden regstier for adjusting LED setting time (not a factor for noise)
laserdad 14:ae0be10b73cd 149 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 150 ob1203.diff = DIFF_ON; //hidden register for turning off subtraction of residual ambient light after ALC
laserdad 14:ae0be10b73cd 151 ob1203.alc = ALC_ON; //hidden register for turning off ambient light cancelleation track and hold circuit
laserdad 14:ae0be10b73cd 152 ob1203.sig_out = SIGNAL_OUT; //hidden register for selecting ambient sample or LED sample if DIFF is off
laserdad 0:e9ae48b7f6f6 153 ob1203.fifo_rollover_en = FIFO_ROLL_ON;
laserdad 13:5ce84c68066e 154 ob1203.fifo_afull_advance_warning = AFULL_ADVANCE_WARNING(0x0F); //warn as quickly as possible (after 17 samples with 0x0F)
laserdad 13:5ce84c68066e 155
laserdad 14:ae0be10b73cd 156 //run initialization according to user compile settings
laserdad 14:ae0be10b73cd 157
laserdad 0:e9ae48b7f6f6 158 if(mode)
laserdad 0:e9ae48b7f6f6 159 {
laserdad 16:0a113303c3ed 160 spo2 ? ob1203.init_spo2() : ob1203.init_hr();
laserdad 0:e9ae48b7f6f6 161 }
laserdad 0:e9ae48b7f6f6 162 else
laserdad 0:e9ae48b7f6f6 163 {
laserdad 5:ebe305e08430 164 meas_ps ? ob1203.init_ps_rgb() : ob1203.init_rgb();
laserdad 0:e9ae48b7f6f6 165 }
laserdad 14:ae0be10b73cd 166 if(trim_oscillator)
laserdad 14:ae0be10b73cd 167 ob1203.setOscTrim();
laserdad 14:ae0be10b73cd 168
laserdad 0:e9ae48b7f6f6 169 }
laserdad 0:e9ae48b7f6f6 170
laserdad 1:fb6b2b4d5d8a 171 void regDump(uint8_t Addr, uint8_t startByte, uint8_t endByte)
laserdad 1:fb6b2b4d5d8a 172 {
laserdad 1:fb6b2b4d5d8a 173 /*print the values of up to 20 registers--buffer limit, e.g.*/
laserdad 1:fb6b2b4d5d8a 174 char regData[20];
laserdad 1:fb6b2b4d5d8a 175 int numBytes;
laserdad 1:fb6b2b4d5d8a 176 if (endByte>=startByte) {
laserdad 1:fb6b2b4d5d8a 177 numBytes = (endByte-startByte+1) < 20 ? (endByte-startByte+1) : 20;
laserdad 1:fb6b2b4d5d8a 178 } else {
laserdad 1:fb6b2b4d5d8a 179 numBytes=1;
laserdad 1:fb6b2b4d5d8a 180 }
laserdad 1:fb6b2b4d5d8a 181
laserdad 1:fb6b2b4d5d8a 182 regData[0] = startByte;
laserdad 1:fb6b2b4d5d8a 183 i2c.write(Addr,regData,1,true);
laserdad 1:fb6b2b4d5d8a 184 i2c.read(Addr, regData, numBytes);
laserdad 1:fb6b2b4d5d8a 185 for(int n=0; n<numBytes; n++) {
laserdad 1:fb6b2b4d5d8a 186 pc.printf("%02X, %02X \r\n", startByte+n, regData[n]);
laserdad 1:fb6b2b4d5d8a 187 }
laserdad 1:fb6b2b4d5d8a 188 }
laserdad 1:fb6b2b4d5d8a 189
laserdad 0:e9ae48b7f6f6 190
laserdad 0:e9ae48b7f6f6 191 void intEvent(void)
laserdad 0:e9ae48b7f6f6 192 {
laserdad 0:e9ae48b7f6f6 193 intFlagged = 1;
laserdad 0:e9ae48b7f6f6 194 }
laserdad 0:e9ae48b7f6f6 195
laserdad 0:e9ae48b7f6f6 196 int main()
laserdad 14:ae0be10b73cd 197 /*This program is messy bacause it allows several different print options and interrupt modes
laserdad 14:ae0be10b73cd 198 Most of the variables are associated with an optional FIR filter to make data pretty.
laserdad 14:ae0be10b73cd 199 */
laserdad 0:e9ae48b7f6f6 200 {
laserdad 4:3aee2ca931b8 201 int numInts = 0;
laserdad 10:7fbf298ee05f 202 uint32_t running_avg = 10;
laserdad 10:7fbf298ee05f 203 uint32_t ps_running_avg = 100;
laserdad 7:3ed0f0522b43 204 uint32_t ps_avg_ptr = 0;
laserdad 3:d3a1fc19bee6 205 char avg_ptr = 0;
laserdad 4:3aee2ca931b8 206 int baseline_ptr = 0;
laserdad 10:7fbf298ee05f 207 uint32_t running_baseline = 240;
laserdad 3:d3a1fc19bee6 208 int first = 1;
laserdad 3:d3a1fc19bee6 209 uint32_t IRavg = 0;
laserdad 3:d3a1fc19bee6 210 uint32_t Ravg = 0;
laserdad 3:d3a1fc19bee6 211 uint32_t IRprev = 0;
laserdad 3:d3a1fc19bee6 212 uint32_t Rprev = 0;
laserdad 3:d3a1fc19bee6 213 uint32_t prevAvg = 0;
laserdad 3:d3a1fc19bee6 214 uint32_t IR_avg_buffer[running_avg];
laserdad 3:d3a1fc19bee6 215 uint32_t R_avg_buffer[running_avg];
laserdad 4:3aee2ca931b8 216 uint32_t IR_baseline_buffer[running_baseline];
laserdad 4:3aee2ca931b8 217 uint32_t R_baseline_buffer[running_baseline];
laserdad 4:3aee2ca931b8 218 uint32_t IRbaseline_prev=0;;
laserdad 4:3aee2ca931b8 219 uint32_t Rbaseline_prev=0;;
laserdad 4:3aee2ca931b8 220 uint32_t IRbaseline=0;
laserdad 4:3aee2ca931b8 221 uint32_t Rbaseline=0;
laserdad 4:3aee2ca931b8 222 uint32_t prevBaseline=0;
laserdad 7:3ed0f0522b43 223 uint32_t PSavg = 0;
laserdad 7:3ed0f0522b43 224 uint32_t PSprev = 0;
laserdad 7:3ed0f0522b43 225 uint32_t PS_avg_buffer[ps_running_avg];
laserdad 7:3ed0f0522b43 226
laserdad 13:5ce84c68066e 227 uint32_t targetIRcounts = 196608; //0.75 of full scale
laserdad 13:5ce84c68066e 228 uint32_t targetRcounts = 196608; //0.75 of full scale
laserdad 13:5ce84c68066e 229 // uint32_t tol1 = 8192; //1 5 bit increment
laserdad 16:0a113303c3ed 230 uint32_t tol1 = 8192; //1 5 bit increment
laserdad 13:5ce84c68066e 231 uint32_t tol2 = 39321; //for 90% and 60% large limits
laserdad 13:5ce84c68066e 232 uint32_t step = 8;
laserdad 13:5ce84c68066e 233 uint32_t IR_in_range = 0;
laserdad 13:5ce84c68066e 234 uint32_t R_in_range = 0;
laserdad 13:5ce84c68066e 235 bool update = 0;
laserdad 14:ae0be10b73cd 236 uint32_t in_range_persist = 4;
laserdad 14:ae0be10b73cd 237 uint16_t maxIRcurrent =0x2AF;
laserdad 14:ae0be10b73cd 238
laserdad 7:3ed0f0522b43 239 for (int n=0;n<ps_running_avg;n++)
laserdad 7:3ed0f0522b43 240 {
laserdad 7:3ed0f0522b43 241 PS_avg_buffer[n] =0;
laserdad 7:3ed0f0522b43 242 }
laserdad 7:3ed0f0522b43 243
laserdad 14:ae0be10b73cd 244 i2c.frequency( 400000 ); //always use max speed I2C
laserdad 0:e9ae48b7f6f6 245 char valid;
laserdad 14:ae0be10b73cd 246 uint32_t ps_ls_data[7]; //array for storing parsed samples
laserdad 14:ae0be10b73cd 247 char samples2Read = 6; //FIFO samples, e.g. 4 samples * 3 bytes = 12 bytes (or 2 SpO2 samples)
laserdad 2:ee175f471ecb 248 char fifoBuffer[samples2Read*3];
laserdad 0:e9ae48b7f6f6 249 uint32_t ppgData[samples2Read];
laserdad 0:e9ae48b7f6f6 250
laserdad 1:fb6b2b4d5d8a 251
laserdad 1:fb6b2b4d5d8a 252 pc.printf("register settings\r\n");
laserdad 1:fb6b2b4d5d8a 253 regDump(OB1203_ADDR,0,19);
laserdad 1:fb6b2b4d5d8a 254 regDump(OB1203_ADDR,20,39);
laserdad 1:fb6b2b4d5d8a 255 regDump(OB1203_ADDR,40,59);
laserdad 1:fb6b2b4d5d8a 256 regDump(OB1203_ADDR,60,77);
laserdad 1:fb6b2b4d5d8a 257
laserdad 1:fb6b2b4d5d8a 258 pc.printf("do initial config\r\n");
laserdad 14:ae0be10b73cd 259 defaultConfig(); //do the ASIC configuration now
laserdad 1:fb6b2b4d5d8a 260
laserdad 1:fb6b2b4d5d8a 261 pc.printf("print new register config\r\n");
laserdad 1:fb6b2b4d5d8a 262 regDump(OB1203_ADDR,0,19);
laserdad 1:fb6b2b4d5d8a 263 regDump(OB1203_ADDR,20,39);
laserdad 1:fb6b2b4d5d8a 264 regDump(OB1203_ADDR,40,59);
laserdad 1:fb6b2b4d5d8a 265 regDump(OB1203_ADDR,60,77);
laserdad 1:fb6b2b4d5d8a 266
laserdad 0:e9ae48b7f6f6 267
laserdad 14:ae0be10b73cd 268 intb.fall(&intEvent); //attach a falling interrupt
laserdad 14:ae0be10b73cd 269 t.start(); //start microsecond timer for datalogging
laserdad 5:ebe305e08430 270
laserdad 0:e9ae48b7f6f6 271 while(1)
laserdad 0:e9ae48b7f6f6 272 {
laserdad 14:ae0be10b73cd 273 if(mode) //PPG case*******************************************************
laserdad 0:e9ae48b7f6f6 274 {
laserdad 14:ae0be10b73cd 275 if(!intb.read()) //check the intb to see if it is low (or could check variable set by ISR here)
laserdad 2:ee175f471ecb 276 {
laserdad 14:ae0be10b73cd 277 if(!afull) //if you are using sample completion interrupts
laserdad 4:3aee2ca931b8 278 {
laserdad 14:ae0be10b73cd 279 numInts++; //increment counter to get data every so many interrupts if ppg new data interrupt mode
laserdad 4:3aee2ca931b8 280 }
laserdad 4:3aee2ca931b8 281 else
laserdad 4:3aee2ca931b8 282 {
laserdad 4:3aee2ca931b8 283 numInts = samples2Read;
laserdad 4:3aee2ca931b8 284 }
laserdad 2:ee175f471ecb 285 intFlagged = 1;
laserdad 4:3aee2ca931b8 286 if( (numInts < samples2Read) && !afull)
laserdad 4:3aee2ca931b8 287 {
laserdad 14:ae0be10b73cd 288 ob1203.get_status(); //clear interrupt--not time to get data yet
laserdad 4:3aee2ca931b8 289 }
laserdad 14:ae0be10b73cd 290 else if(intFlagged && (numInts==samples2Read) ) //time to get data
laserdad 3:d3a1fc19bee6 291 {
laserdad 4:3aee2ca931b8 292 numInts = 0;
laserdad 4:3aee2ca931b8 293 ob1203.getFifoSamples(samples2Read,fifoBuffer);
laserdad 4:3aee2ca931b8 294 // for (int n=0;n<samples2Read*3;n++)
laserdad 4:3aee2ca931b8 295 // {
laserdad 4:3aee2ca931b8 296 // pc.printf("%02X ",fifoBuffer[n]);
laserdad 4:3aee2ca931b8 297 // }
laserdad 4:3aee2ca931b8 298 // pc.printf("\r\n");
laserdad 4:3aee2ca931b8 299 ob1203.parseFifoSamples(samples2Read,fifoBuffer,ppgData);
laserdad 4:3aee2ca931b8 300 // for (int n=0;n<samples2Read;n++)
laserdad 4:3aee2ca931b8 301 // {
laserdad 4:3aee2ca931b8 302 // pc.printf("%d ",ppgData[n]);
laserdad 4:3aee2ca931b8 303 // }
laserdad 4:3aee2ca931b8 304 // pc.printf("\r\n");
laserdad 4:3aee2ca931b8 305 if(first) //populate average and baseline buffers the first time we run
laserdad 3:d3a1fc19bee6 306 {
laserdad 4:3aee2ca931b8 307 for(int n=0;n<running_avg;n++)
laserdad 4:3aee2ca931b8 308 {
laserdad 4:3aee2ca931b8 309 IR_avg_buffer[n] = ppgData[0];
laserdad 4:3aee2ca931b8 310 IRavg += IR_avg_buffer[n];
laserdad 4:3aee2ca931b8 311 if(spo2)
laserdad 4:3aee2ca931b8 312 {
laserdad 4:3aee2ca931b8 313 R_avg_buffer[n] = ppgData[1];
laserdad 4:3aee2ca931b8 314 Ravg += R_avg_buffer[n];
laserdad 4:3aee2ca931b8 315 }
laserdad 4:3aee2ca931b8 316
laserdad 4:3aee2ca931b8 317 }
laserdad 4:3aee2ca931b8 318 for( int n=0;n<running_baseline;n++)
laserdad 4:3aee2ca931b8 319 {
laserdad 4:3aee2ca931b8 320 IR_baseline_buffer[n] = 0;
laserdad 4:3aee2ca931b8 321 if(spo2)
laserdad 4:3aee2ca931b8 322 {
laserdad 4:3aee2ca931b8 323 R_baseline_buffer[n] = 0;
laserdad 4:3aee2ca931b8 324 }
laserdad 4:3aee2ca931b8 325 }
laserdad 4:3aee2ca931b8 326 first = 0;
laserdad 13:5ce84c68066e 327 }//end if first
laserdad 13:5ce84c68066e 328
laserdad 4:3aee2ca931b8 329 for (int n=0;n<samples2Read/2;n++)
laserdad 4:3aee2ca931b8 330 {
laserdad 4:3aee2ca931b8 331 ( avg_ptr+1 == running_avg ) ? avg_ptr = 0 : avg_ptr++;
laserdad 4:3aee2ca931b8 332 ( baseline_ptr+1 == running_baseline) ? baseline_ptr = 0 : baseline_ptr++;
laserdad 4:3aee2ca931b8 333 IRprev = IR_avg_buffer[avg_ptr]; //load the sample you are about to write over
laserdad 4:3aee2ca931b8 334 IR_avg_buffer[avg_ptr] = ppgData[2*n]; //load the new sample in the buffer
laserdad 4:3aee2ca931b8 335 IRavg += (IR_avg_buffer[avg_ptr] - IRprev); //update the average by removing the old sample and adding the new
laserdad 4:3aee2ca931b8 336
laserdad 4:3aee2ca931b8 337 IRbaseline_prev = IR_baseline_buffer[baseline_ptr]; //load the sample you are about to write over
laserdad 4:3aee2ca931b8 338 IR_baseline_buffer[baseline_ptr] = ppgData[2*n]; //load the new sample in the buffer
laserdad 4:3aee2ca931b8 339 IRbaseline += (IR_baseline_buffer[baseline_ptr] - IRbaseline_prev); //update the average by removing the old sample and adding the new
laserdad 4:3aee2ca931b8 340
laserdad 14:ae0be10b73cd 341 if(spo2) //print two columsn of data
laserdad 3:d3a1fc19bee6 342 {
laserdad 4:3aee2ca931b8 343 Rprev = R_avg_buffer[avg_ptr];
laserdad 4:3aee2ca931b8 344 R_avg_buffer[avg_ptr] = ppgData[2*n+1];
laserdad 4:3aee2ca931b8 345 Ravg += (R_avg_buffer[avg_ptr] - Rprev);
IDTsanjoseuser 8:21738f9c5835 346
laserdad 4:3aee2ca931b8 347 // 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 348
laserdad 4:3aee2ca931b8 349 Rbaseline_prev = R_baseline_buffer[baseline_ptr];
laserdad 4:3aee2ca931b8 350 R_baseline_buffer[baseline_ptr] = ppgData[2*n+1];
laserdad 4:3aee2ca931b8 351 Rbaseline += (R_baseline_buffer[baseline_ptr] - Rbaseline_prev);
laserdad 4:3aee2ca931b8 352
laserdad 13:5ce84c68066e 353 if(printAvg)
laserdad 13:5ce84c68066e 354 {
IDTsanjoseuser 8:21738f9c5835 355 //PRINT AVG DATA
laserdad 13:5ce84c68066e 356 pc.printf("%d,%d,%d\r\n",t.read_us(),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 13:5ce84c68066e 404 if(IRAGC)
laserdad 13:5ce84c68066e 405 {
laserdad 13:5ce84c68066e 406 if( ppgData[2*n] > targetIRcounts + (IR_in_range>in_range_persist ? tol2: tol1) )
laserdad 13:5ce84c68066e 407 {
laserdad 13:5ce84c68066e 408 if(ppgData[2*n]>targetIRcounts + tol2)
laserdad 13:5ce84c68066e 409 IR_in_range=0;
laserdad 13:5ce84c68066e 410 if(ob1203.ir_current>step)
laserdad 13:5ce84c68066e 411 {
laserdad 14:ae0be10b73cd 412 // pc.printf("IR %d, IRc %d--, IR_in_range %d\r\n",ppgData[2*n],ob1203.ir_current,IR_in_range);
laserdad 13:5ce84c68066e 413 ob1203.ir_current -= step;
laserdad 13:5ce84c68066e 414 update = 1;
laserdad 13:5ce84c68066e 415
laserdad 13:5ce84c68066e 416 }
laserdad 13:5ce84c68066e 417 }
laserdad 13:5ce84c68066e 418 else if( ppgData[2*n] < targetIRcounts - (IR_in_range>in_range_persist ? tol2 : tol1) )
laserdad 13:5ce84c68066e 419 {
laserdad 13:5ce84c68066e 420 if(ppgData[2*n]<targetIRcounts - tol2)
laserdad 13:5ce84c68066e 421 IR_in_range=0;
laserdad 14:ae0be10b73cd 422 if(ob1203.ir_current+step<maxIRcurrent) //no need to go to full current
laserdad 13:5ce84c68066e 423 {
laserdad 13:5ce84c68066e 424 ob1203.ir_current += step;
laserdad 13:5ce84c68066e 425 update = 1;
laserdad 14:ae0be10b73cd 426 // pc.printf("IR %d, IRc %d++, IR_in range %d\r\n", ppgData[2*n],ob1203.ir_current,IR_in_range);
laserdad 13:5ce84c68066e 427 }
laserdad 13:5ce84c68066e 428 }
laserdad 13:5ce84c68066e 429 else
laserdad 13:5ce84c68066e 430 {
laserdad 14:ae0be10b73cd 431 if( (ppgData[2*n] > (targetRcounts-tol1) ) && (ppgData[2*n] < (targetRcounts+tol1)) )
laserdad 14:ae0be10b73cd 432 IR_in_range++;
laserdad 13:5ce84c68066e 433 }
laserdad 13:5ce84c68066e 434 }//end IR AGC case
laserdad 13:5ce84c68066e 435
laserdad 13:5ce84c68066e 436 if(spo2 && redAGC)
laserdad 13:5ce84c68066e 437 {
laserdad 13:5ce84c68066e 438 if( ppgData[2*n+1] > targetRcounts + (R_in_range>in_range_persist ? tol2 : tol1) )
laserdad 13:5ce84c68066e 439 {
laserdad 13:5ce84c68066e 440 if(ppgData[2*n+1]>targetRcounts + tol2)
laserdad 13:5ce84c68066e 441 R_in_range=0;
laserdad 13:5ce84c68066e 442 if(ob1203.r_current>step)
laserdad 13:5ce84c68066e 443 {
laserdad 14:ae0be10b73cd 444 // pc.printf("R %d, Rc %d--,R_in_range %d\r\n", ppgData[2*n+1],ob1203.r_current,R_in_range);
laserdad 13:5ce84c68066e 445 ob1203.r_current -= step;
laserdad 13:5ce84c68066e 446 update = 1;
laserdad 13:5ce84c68066e 447 }
laserdad 13:5ce84c68066e 448 }
laserdad 13:5ce84c68066e 449 else if( ppgData[2*n+1] < targetRcounts - (R_in_range>in_range_persist ? tol2 : tol1) )
laserdad 13:5ce84c68066e 450 {
laserdad 13:5ce84c68066e 451 if(ppgData[2*n+1]<targetRcounts - tol2)
laserdad 13:5ce84c68066e 452 R_in_range=0;
laserdad 13:5ce84c68066e 453 if(ob1203.r_current+step<0x1FF)
laserdad 13:5ce84c68066e 454 {
laserdad 13:5ce84c68066e 455
laserdad 14:ae0be10b73cd 456 // pc.printf("R %d, Rc %d++,R_in_range %d\r\n", ppgData[2*n+1],ob1203.r_current,R_in_range);
laserdad 13:5ce84c68066e 457 ob1203.r_current += step;
laserdad 13:5ce84c68066e 458 update = 1;
laserdad 13:5ce84c68066e 459 }
laserdad 13:5ce84c68066e 460 }
laserdad 13:5ce84c68066e 461 else
laserdad 13:5ce84c68066e 462 {
laserdad 14:ae0be10b73cd 463 if( (ppgData[2*n+1] > (targetRcounts-tol1) ) && (ppgData[2*n+1] < (targetRcounts+tol1)) )
laserdad 14:ae0be10b73cd 464 R_in_range++;
laserdad 13:5ce84c68066e 465 }
laserdad 13:5ce84c68066e 466 if(update)
laserdad 13:5ce84c68066e 467 {
laserdad 13:5ce84c68066e 468 ob1203.setPPGcurrent();
laserdad 13:5ce84c68066e 469 ob1203.resetFIFO();
laserdad 13:5ce84c68066e 470 update=0;
laserdad 13:5ce84c68066e 471 }
laserdad 14:ae0be10b73cd 472 }//end R AGC case
laserdad 4:3aee2ca931b8 473 }
laserdad 13:5ce84c68066e 474 }//end sample loop
laserdad 13:5ce84c68066e 475
laserdad 13:5ce84c68066e 476
laserdad 13:5ce84c68066e 477
laserdad 13:5ce84c68066e 478 intFlagged = 0;
laserdad 13:5ce84c68066e 479
laserdad 13:5ce84c68066e 480 }//end if time to read samples
laserdad 4:3aee2ca931b8 481 } //end if !intb
laserdad 14:ae0be10b73cd 482 }// end mode (PPG case)
laserdad 14:ae0be10b73cd 483 //*********************************************************************
laserdad 14:ae0be10b73cd 484 else //LS and PS measurement case
laserdad 0:e9ae48b7f6f6 485 {
laserdad 1:fb6b2b4d5d8a 486 wait_ms(sample_delay);
laserdad 16:0a113303c3ed 487
laserdad 16:0a113303c3ed 488 if( meas_ps ? ob1203.psIsNew() : ob1203.lsIsNew() )
laserdad 1:fb6b2b4d5d8a 489 {
laserdad 5:ebe305e08430 490 meas_ps ? valid = ob1203.get_ps_ls_data(ps_ls_data) : valid = ob1203.get_ls_data(ps_ls_data);
laserdad 7:3ed0f0522b43 491 if(meas_ps)
laserdad 7:3ed0f0522b43 492 {
laserdad 7:3ed0f0522b43 493 ( ps_avg_ptr+1 == ps_running_avg ) ? ps_avg_ptr = 0 : ps_avg_ptr++;
laserdad 7:3ed0f0522b43 494 PSprev = PS_avg_buffer[ps_avg_ptr]; //load the sample you are about to write over
laserdad 7:3ed0f0522b43 495 PS_avg_buffer[ps_avg_ptr] = ps_ls_data[0]; //load the new sample in the buffer
laserdad 7:3ed0f0522b43 496 PSavg += (PS_avg_buffer[ps_avg_ptr] - PSprev); //update the average by removing the old sample and adding the new
laserdad 7:3ed0f0522b43 497 // 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 498 }
laserdad 5:ebe305e08430 499 if (meas_temp)
laserdad 5:ebe305e08430 500 {
laserdad 5:ebe305e08430 501 ob1203.setMainConfig();
laserdad 5:ebe305e08430 502 }
laserdad 12:5de5f550e765 503 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 504 // 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 505
laserdad 1:fb6b2b4d5d8a 506 }
laserdad 2:ee175f471ecb 507 // else
laserdad 2:ee175f471ecb 508 // {
laserdad 2:ee175f471ecb 509 // pc.printf("status = %04X\r\n",ob1203.get_status() );
laserdad 2:ee175f471ecb 510 // }
laserdad 0:e9ae48b7f6f6 511 }
laserdad 1:fb6b2b4d5d8a 512 }//end while
laserdad 1:fb6b2b4d5d8a 513 }//end main