IDT Optical Sensors / Mbed 2 deprecated OB1203_IDT

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Dependencies:   mbed OB1203_example_driver

main.cpp@9:98b9216f9ff3, 2018-05-17 (annotated)

Committer:
laserdad
Date:
Thu May 17 21:53:01 2018 +0000
Revision:
9:98b9216f9ff3
Parent:
8:21738f9c5835
Child:
10:7fbf298ee05f
added oscillator trimming

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 0:e9ae48b7f6f6 6 #define intb_pin D3
laserdad 0:e9ae48b7f6f6 7
laserdad 1:fb6b2b4d5d8a 8
laserdad 0:e9ae48b7f6f6 9 I2C i2c(I2C_SDA,I2C_SCL);
laserdad 4:3aee2ca931b8 10 //SoftI2C i2c(I2C_SDA,I2C_SCL);
laserdad 0:e9ae48b7f6f6 11 InterruptIn intb(intb_pin);
laserdad 0:e9ae48b7f6f6 12 DigitalOut sda_pullup(D11,1);
laserdad 0:e9ae48b7f6f6 13 DigitalOut scl_pullup(D12,1);
laserdad 0:e9ae48b7f6f6 14 DigitalOut intb_pullup(D13,1);
laserdad 0:e9ae48b7f6f6 15
laserdad 0:e9ae48b7f6f6 16 OB1203 ob1203(&i2c);
laserdad 2:ee175f471ecb 17 Serial pc(USBTX, USBRX,256000);
laserdad 0:e9ae48b7f6f6 18 Timer t;
laserdad 0:e9ae48b7f6f6 19
laserdad 1:fb6b2b4d5d8a 20
laserdad 6:aaa2f8fb5123 21 //USER CONFIGURABLE*********
laserdad 7:3ed0f0522b43 22 bool mode = 1; //0 for PS_LS, 1 for PPG
laserdad 7:3ed0f0522b43 23 bool meas_ps = 1;
laserdad 3:d3a1fc19bee6 24 bool spo2 = 1; //0 for HR, 1 for SpO2
laserdad 4:3aee2ca931b8 25 bool afull = 1; //use Afull interrupt--otherwise PPG new data interrupt
laserdad 7:3ed0f0522b43 26 bool meas_temp = 0;
laserdad 6:aaa2f8fb5123 27 //****************************
laserdad 6:aaa2f8fb5123 28
laserdad 6:aaa2f8fb5123 29 //internal settings
laserdad 6:aaa2f8fb5123 30 bool intFlagged =0;
laserdad 6:aaa2f8fb5123 31 int sample_delay = 25; //ms
laserdad 1:fb6b2b4d5d8a 32
laserdad 0:e9ae48b7f6f6 33 void defaultConfig()
laserdad 0:e9ae48b7f6f6 34 {
laserdad 9:98b9216f9ff3 35 ob1203.osc_trim = 0x3F; //max trim code
laserdad 9:98b9216f9ff3 36
laserdad 4:3aee2ca931b8 37 meas_temp ? ob1203.temp_en = TEMP_ON : ob1203.temp_en = TEMP_OFF;
laserdad 4:3aee2ca931b8 38
laserdad 4:3aee2ca931b8 39 ob1203.ls_res = LS_RES(0); //2= 18bit 100ms, 0= max res
laserdad 4:3aee2ca931b8 40 ob1203.ls_rate = LS_RATE(4); //2 =100ms, 4 = 500ms
laserdad 4:3aee2ca931b8 41 ob1203.ls_gain = LS_GAIN(3); //gain 3 default (range)
laserdad 1:fb6b2b4d5d8a 42 ob1203.ls_thres_hi = 0x000FFFFF;
laserdad 0:e9ae48b7f6f6 43 ob1203.ls_thres_lo = 0;
laserdad 0:e9ae48b7f6f6 44 ob1203.ls_sai = LS_SAI_OFF;
laserdad 0:e9ae48b7f6f6 45 ob1203.ls_mode = RGB_MODE;
laserdad 0:e9ae48b7f6f6 46 ob1203.ls_en = LS_ON;
laserdad 4:3aee2ca931b8 47
laserdad 0:e9ae48b7f6f6 48 ob1203.ps_sai_en = PS_SAI_OFF;
laserdad 5:ebe305e08430 49 // ob1203.ps_sai_en = PS_SAI_ON;
laserdad 1:fb6b2b4d5d8a 50 if(mode)
laserdad 1:fb6b2b4d5d8a 51 {
laserdad 3:d3a1fc19bee6 52 if (spo2)
laserdad 3:d3a1fc19bee6 53 {
laserdad 3:d3a1fc19bee6 54 ob1203.ppg_ps_mode = SPO2_MODE;
laserdad 3:d3a1fc19bee6 55 }
laserdad 3:d3a1fc19bee6 56 else
laserdad 3:d3a1fc19bee6 57 {
laserdad 3:d3a1fc19bee6 58 ob1203.ppg_ps_mode = HR_MODE;
laserdad 3:d3a1fc19bee6 59 }
laserdad 3:d3a1fc19bee6 60
laserdad 1:fb6b2b4d5d8a 61 }
laserdad 1:fb6b2b4d5d8a 62 else
laserdad 1:fb6b2b4d5d8a 63 {
laserdad 1:fb6b2b4d5d8a 64 ob1203.ppg_ps_mode = PS_MODE;
laserdad 1:fb6b2b4d5d8a 65 }
laserdad 7:3ed0f0522b43 66 ob1203.ps_pulses = PS_PULSES(8);
laserdad 1:fb6b2b4d5d8a 67 // pc.printf("ps_pulses = %02X\r\n",ob1203.ps_pulses);
laserdad 7:3ed0f0522b43 68 ob1203.ps_pwidth = PS_PWIDTH(1);
laserdad 7:3ed0f0522b43 69 ob1203.ps_rate = PS_RATE(4);
laserdad 1:fb6b2b4d5d8a 70 // pc.printf("ps_rate = %02X\r\n",ob1203.ps_rate);
laserdad 7:3ed0f0522b43 71 ob1203.ps_avg_en = PS_AVG_ON;
laserdad 0:e9ae48b7f6f6 72 ob1203.ps_can_ana = PS_CAN_ANA_0;
laserdad 0:e9ae48b7f6f6 73 ob1203.ps_digital_can = 0;
laserdad 0:e9ae48b7f6f6 74 ob1203.ps_hys_level = 0;
laserdad 4:3aee2ca931b8 75 meas_ps ? ob1203.ps_current = 0x3FF : ob1203.ps_current = 0x000;
laserdad 4:3aee2ca931b8 76 // ob1203.ps_current = 0;
laserdad 0:e9ae48b7f6f6 77 ob1203.ps_thres_hi = 0xFF;
laserdad 0:e9ae48b7f6f6 78 ob1203.ps_thres_lo = 0x00;
laserdad 0:e9ae48b7f6f6 79
laserdad 0:e9ae48b7f6f6 80 //interrupts
laserdad 0:e9ae48b7f6f6 81 ob1203.ls_int_sel = LS_INT_SEL_W;
laserdad 0:e9ae48b7f6f6 82 ob1203.ls_var_mode = LS_THRES_INT_MODE;
laserdad 0:e9ae48b7f6f6 83 ob1203.ls_int_en = LS_INT_ON;
laserdad 0:e9ae48b7f6f6 84 ob1203.ppg_ps_en = PPG_PS_ON;
laserdad 4:3aee2ca931b8 85
laserdad 0:e9ae48b7f6f6 86 ob1203.ps_logic_mode = PS_INT_READ_CLEARS;
laserdad 0:e9ae48b7f6f6 87 ob1203.ps_int_en = PS_INT_ON;
laserdad 0:e9ae48b7f6f6 88 ob1203.ls_persist = LS_PERSIST(2);
laserdad 0:e9ae48b7f6f6 89 ob1203.ps_persist = PS_PERSIST(2);
laserdad 4:3aee2ca931b8 90 //int
laserdad 4:3aee2ca931b8 91 if(afull)
laserdad 4:3aee2ca931b8 92 {
laserdad 4:3aee2ca931b8 93 ob1203.afull_int_en = AFULL_INT_ON;
laserdad 4:3aee2ca931b8 94 ob1203.ppg_int_en = PPG_INT_OFF;
laserdad 4:3aee2ca931b8 95 }
laserdad 4:3aee2ca931b8 96 else
laserdad 4:3aee2ca931b8 97 {
laserdad 4:3aee2ca931b8 98 ob1203.afull_int_en = AFULL_INT_OFF;
laserdad 4:3aee2ca931b8 99 ob1203.ppg_int_en = PPG_INT_ON;
laserdad 4:3aee2ca931b8 100 }
laserdad 0:e9ae48b7f6f6 101 //PPG
laserdad 6:aaa2f8fb5123 102 ob1203.ir_current = 511; //max 1023. 3FF
laserdad 3:d3a1fc19bee6 103 if (spo2)
laserdad 3:d3a1fc19bee6 104 {
laserdad 4:3aee2ca931b8 105 // ob1203.r_current = 0x0FF;
laserdad 6:aaa2f8fb5123 106 ob1203.r_current = 511; //max 511. 1FF
laserdad 3:d3a1fc19bee6 107 }
laserdad 3:d3a1fc19bee6 108 else
laserdad 3:d3a1fc19bee6 109 {
laserdad 3:d3a1fc19bee6 110 ob1203.r_current = 0;
laserdad 3:d3a1fc19bee6 111 }
IDTsanjoseuser 8:21738f9c5835 112 ob1203.ppg_ps_gain = PPG_PS_GAIN_2;
laserdad 0:e9ae48b7f6f6 113 ob1203.ppg_pow_save = PPG_POW_SAVE_OFF;
laserdad 0:e9ae48b7f6f6 114 ob1203.led_flip = LED_FLIP_OFF;
laserdad 0:e9ae48b7f6f6 115 ob1203.ch1_can_ana = PPG_CH1_CAN(0);
laserdad 0:e9ae48b7f6f6 116 ob1203.ch2_can_ana = PPG_CH2_CAN(0);
laserdad 7:3ed0f0522b43 117 ob1203.ppg_avg = PPG_AVG(0); //2^n
laserdad 9:98b9216f9ff3 118 ob1203.ppg_rate = PPG_RATE(4);
laserdad 9:98b9216f9ff3 119 ob1203.ppg_pwidth = PPG_PWIDTH(5);
laserdad 0:e9ae48b7f6f6 120 ob1203.ppg_freq = PPG_FREQ_60HZ;
laserdad 9:98b9216f9ff3 121 ob1203.ppg_LED_settling = PPG_LED_SETTLING(3);
laserdad 9:98b9216f9ff3 122 ob1203.ppg_ALC_track = PPG_ALC_TRACK(2);
laserdad 9:98b9216f9ff3 123
laserdad 2:ee175f471ecb 124 // ob1203.ppg_freq = PPG_FREQ_50HZ;
laserdad 3:d3a1fc19bee6 125
laserdad 0:e9ae48b7f6f6 126 ob1203.fifo_rollover_en = FIFO_ROLL_ON;
laserdad 0:e9ae48b7f6f6 127 ob1203.fifo_afull_samples_left = AFULL_SAMPLES_LEFT(8);
laserdad 0:e9ae48b7f6f6 128
laserdad 0:e9ae48b7f6f6 129 if(mode)
laserdad 0:e9ae48b7f6f6 130 {
laserdad 3:d3a1fc19bee6 131 if(spo2)
laserdad 3:d3a1fc19bee6 132 {
laserdad 3:d3a1fc19bee6 133 ob1203.init_spo2();
laserdad 3:d3a1fc19bee6 134 }
laserdad 3:d3a1fc19bee6 135 else
laserdad 3:d3a1fc19bee6 136 {
laserdad 3:d3a1fc19bee6 137 ob1203.init_hr();
laserdad 3:d3a1fc19bee6 138 }
laserdad 0:e9ae48b7f6f6 139 }
laserdad 0:e9ae48b7f6f6 140 else
laserdad 0:e9ae48b7f6f6 141 {
laserdad 5:ebe305e08430 142 meas_ps ? ob1203.init_ps_rgb() : ob1203.init_rgb();
laserdad 0:e9ae48b7f6f6 143 }
laserdad 0:e9ae48b7f6f6 144 }
laserdad 0:e9ae48b7f6f6 145
laserdad 1:fb6b2b4d5d8a 146 void regDump(uint8_t Addr, uint8_t startByte, uint8_t endByte)
laserdad 1:fb6b2b4d5d8a 147 {
laserdad 1:fb6b2b4d5d8a 148 /*print the values of up to 20 registers--buffer limit, e.g.*/
laserdad 1:fb6b2b4d5d8a 149 char regData[20];
laserdad 1:fb6b2b4d5d8a 150 int numBytes;
laserdad 1:fb6b2b4d5d8a 151 if (endByte>=startByte) {
laserdad 1:fb6b2b4d5d8a 152 numBytes = (endByte-startByte+1) < 20 ? (endByte-startByte+1) : 20;
laserdad 1:fb6b2b4d5d8a 153 } else {
laserdad 1:fb6b2b4d5d8a 154 numBytes=1;
laserdad 1:fb6b2b4d5d8a 155 }
laserdad 1:fb6b2b4d5d8a 156
laserdad 1:fb6b2b4d5d8a 157 regData[0] = startByte;
laserdad 1:fb6b2b4d5d8a 158 i2c.write(Addr,regData,1,true);
laserdad 1:fb6b2b4d5d8a 159 i2c.read(Addr, regData, numBytes);
laserdad 1:fb6b2b4d5d8a 160 for(int n=0; n<numBytes; n++) {
laserdad 1:fb6b2b4d5d8a 161 pc.printf("%02X, %02X \r\n", startByte+n, regData[n]);
laserdad 1:fb6b2b4d5d8a 162 }
laserdad 1:fb6b2b4d5d8a 163 }
laserdad 1:fb6b2b4d5d8a 164
laserdad 0:e9ae48b7f6f6 165
laserdad 0:e9ae48b7f6f6 166 void intEvent(void)
laserdad 0:e9ae48b7f6f6 167 {
laserdad 0:e9ae48b7f6f6 168 intFlagged = 1;
laserdad 0:e9ae48b7f6f6 169 }
laserdad 0:e9ae48b7f6f6 170
laserdad 0:e9ae48b7f6f6 171 int main()
laserdad 0:e9ae48b7f6f6 172 {
laserdad 4:3aee2ca931b8 173 int numInts = 0;
laserdad 4:3aee2ca931b8 174 uint32_t running_avg = 65;
laserdad 7:3ed0f0522b43 175 uint32_t ps_running_avg = 1;
laserdad 7:3ed0f0522b43 176 uint32_t ps_avg_ptr = 0;
laserdad 3:d3a1fc19bee6 177 char avg_ptr = 0;
laserdad 4:3aee2ca931b8 178 int baseline_ptr = 0;
laserdad 4:3aee2ca931b8 179 uint32_t running_baseline = 850;
laserdad 3:d3a1fc19bee6 180 int first = 1;
laserdad 3:d3a1fc19bee6 181 uint32_t IRavg = 0;
laserdad 3:d3a1fc19bee6 182 uint32_t Ravg = 0;
laserdad 3:d3a1fc19bee6 183 uint32_t IRprev = 0;
laserdad 3:d3a1fc19bee6 184 uint32_t Rprev = 0;
laserdad 3:d3a1fc19bee6 185 uint32_t prevAvg = 0;
laserdad 3:d3a1fc19bee6 186 uint32_t IR_avg_buffer[running_avg];
laserdad 3:d3a1fc19bee6 187 uint32_t R_avg_buffer[running_avg];
laserdad 4:3aee2ca931b8 188 uint32_t IR_baseline_buffer[running_baseline];
laserdad 4:3aee2ca931b8 189 uint32_t R_baseline_buffer[running_baseline];
laserdad 4:3aee2ca931b8 190 uint32_t IRbaseline_prev=0;;
laserdad 4:3aee2ca931b8 191 uint32_t Rbaseline_prev=0;;
laserdad 4:3aee2ca931b8 192 uint32_t IRbaseline=0;
laserdad 4:3aee2ca931b8 193 uint32_t Rbaseline=0;
laserdad 4:3aee2ca931b8 194 uint32_t prevBaseline=0;
laserdad 7:3ed0f0522b43 195 uint32_t PSavg = 0;
laserdad 7:3ed0f0522b43 196 uint32_t PSprev = 0;
laserdad 7:3ed0f0522b43 197 uint32_t PS_avg_buffer[ps_running_avg];
laserdad 7:3ed0f0522b43 198
laserdad 7:3ed0f0522b43 199 for (int n=0;n<ps_running_avg;n++)
laserdad 7:3ed0f0522b43 200 {
laserdad 7:3ed0f0522b43 201 PS_avg_buffer[n] =0;
laserdad 7:3ed0f0522b43 202 }
laserdad 7:3ed0f0522b43 203
laserdad 2:ee175f471ecb 204 i2c.frequency( 400000 );
laserdad 0:e9ae48b7f6f6 205 char valid;
laserdad 4:3aee2ca931b8 206 uint32_t ps_ls_data[7];
laserdad 2:ee175f471ecb 207 char samples2Read = 4; //samples, e.g. 4 samples * 3 bytes = 12 bytes (or 2 SpO2 samples)
laserdad 2:ee175f471ecb 208 char fifoBuffer[samples2Read*3];
laserdad 0:e9ae48b7f6f6 209 uint32_t ppgData[samples2Read];
laserdad 0:e9ae48b7f6f6 210
laserdad 1:fb6b2b4d5d8a 211
laserdad 1:fb6b2b4d5d8a 212 pc.printf("register settings\r\n");
laserdad 1:fb6b2b4d5d8a 213 regDump(OB1203_ADDR,0,19);
laserdad 1:fb6b2b4d5d8a 214 regDump(OB1203_ADDR,20,39);
laserdad 1:fb6b2b4d5d8a 215 regDump(OB1203_ADDR,40,59);
laserdad 1:fb6b2b4d5d8a 216 regDump(OB1203_ADDR,60,77);
laserdad 1:fb6b2b4d5d8a 217
laserdad 1:fb6b2b4d5d8a 218 pc.printf("do initial config\r\n");
laserdad 0:e9ae48b7f6f6 219 defaultConfig(); //rgb ps
laserdad 1:fb6b2b4d5d8a 220
laserdad 1:fb6b2b4d5d8a 221 pc.printf("print new register config\r\n");
laserdad 1:fb6b2b4d5d8a 222 regDump(OB1203_ADDR,0,19);
laserdad 1:fb6b2b4d5d8a 223 regDump(OB1203_ADDR,20,39);
laserdad 1:fb6b2b4d5d8a 224 regDump(OB1203_ADDR,40,59);
laserdad 1:fb6b2b4d5d8a 225 regDump(OB1203_ADDR,60,77);
laserdad 1:fb6b2b4d5d8a 226
laserdad 0:e9ae48b7f6f6 227
laserdad 0:e9ae48b7f6f6 228 intb.fall(&intEvent);
laserdad 3:d3a1fc19bee6 229 t.start();
laserdad 5:ebe305e08430 230
laserdad 0:e9ae48b7f6f6 231 while(1)
laserdad 0:e9ae48b7f6f6 232 {
laserdad 1:fb6b2b4d5d8a 233 if(mode)
laserdad 0:e9ae48b7f6f6 234 {
laserdad 2:ee175f471ecb 235 if(!intb.read())
laserdad 2:ee175f471ecb 236 {
laserdad 4:3aee2ca931b8 237 if(!afull)
laserdad 4:3aee2ca931b8 238 {
laserdad 4:3aee2ca931b8 239 numInts++; //get data every other interrupt if ppg new data interrupt mode
laserdad 4:3aee2ca931b8 240 }
laserdad 4:3aee2ca931b8 241 else
laserdad 4:3aee2ca931b8 242 {
laserdad 4:3aee2ca931b8 243 numInts = samples2Read;
laserdad 4:3aee2ca931b8 244 }
laserdad 2:ee175f471ecb 245 intFlagged = 1;
laserdad 4:3aee2ca931b8 246 if( (numInts < samples2Read) && !afull)
laserdad 4:3aee2ca931b8 247 {
laserdad 4:3aee2ca931b8 248 ob1203.get_status();
laserdad 4:3aee2ca931b8 249 }
laserdad 4:3aee2ca931b8 250 else if(intFlagged && (numInts==samples2Read) )
laserdad 3:d3a1fc19bee6 251 {
laserdad 4:3aee2ca931b8 252 numInts = 0;
laserdad 4:3aee2ca931b8 253 ob1203.getFifoSamples(samples2Read,fifoBuffer);
laserdad 4:3aee2ca931b8 254 // for (int n=0;n<samples2Read*3;n++)
laserdad 4:3aee2ca931b8 255 // {
laserdad 4:3aee2ca931b8 256 // pc.printf("%02X ",fifoBuffer[n]);
laserdad 4:3aee2ca931b8 257 // }
laserdad 4:3aee2ca931b8 258 // pc.printf("\r\n");
laserdad 4:3aee2ca931b8 259 ob1203.parseFifoSamples(samples2Read,fifoBuffer,ppgData);
laserdad 4:3aee2ca931b8 260 // for (int n=0;n<samples2Read;n++)
laserdad 4:3aee2ca931b8 261 // {
laserdad 4:3aee2ca931b8 262 // pc.printf("%d ",ppgData[n]);
laserdad 4:3aee2ca931b8 263 // }
laserdad 4:3aee2ca931b8 264 // pc.printf("\r\n");
laserdad 4:3aee2ca931b8 265 if(first) //populate average and baseline buffers the first time we run
laserdad 3:d3a1fc19bee6 266 {
laserdad 4:3aee2ca931b8 267 for(int n=0;n<running_avg;n++)
laserdad 4:3aee2ca931b8 268 {
laserdad 4:3aee2ca931b8 269 IR_avg_buffer[n] = ppgData[0];
laserdad 4:3aee2ca931b8 270 IRavg += IR_avg_buffer[n];
laserdad 4:3aee2ca931b8 271 if(spo2)
laserdad 4:3aee2ca931b8 272 {
laserdad 4:3aee2ca931b8 273 R_avg_buffer[n] = ppgData[1];
laserdad 4:3aee2ca931b8 274 Ravg += R_avg_buffer[n];
laserdad 4:3aee2ca931b8 275 }
laserdad 4:3aee2ca931b8 276
laserdad 4:3aee2ca931b8 277 }
laserdad 4:3aee2ca931b8 278 for( int n=0;n<running_baseline;n++)
laserdad 4:3aee2ca931b8 279 {
laserdad 4:3aee2ca931b8 280 // IR_baseline_buffer[n] = ppgData[0];
laserdad 4:3aee2ca931b8 281 IR_baseline_buffer[n] = 0;
laserdad 4:3aee2ca931b8 282 if(spo2)
laserdad 4:3aee2ca931b8 283 {
laserdad 4:3aee2ca931b8 284 // R_baseline_buffer[n] = ppgData[1];
laserdad 4:3aee2ca931b8 285 R_baseline_buffer[n] = 0;
laserdad 4:3aee2ca931b8 286 }
laserdad 4:3aee2ca931b8 287 }
laserdad 4:3aee2ca931b8 288 first = 0;
laserdad 4:3aee2ca931b8 289 // IRbaseline = running_baseline*ppgData[0];
laserdad 4:3aee2ca931b8 290 // Rbaseline = running_baseline*ppgData[1];
laserdad 4:3aee2ca931b8 291 }
laserdad 4:3aee2ca931b8 292
laserdad 4:3aee2ca931b8 293 // IRbaseline = running_baseline*ppgData[0];
laserdad 4:3aee2ca931b8 294 for (int n=0;n<samples2Read/2;n++)
laserdad 4:3aee2ca931b8 295 {
laserdad 4:3aee2ca931b8 296 ( avg_ptr+1 == running_avg ) ? avg_ptr = 0 : avg_ptr++;
laserdad 4:3aee2ca931b8 297 ( baseline_ptr+1 == running_baseline) ? baseline_ptr = 0 : baseline_ptr++;
laserdad 4:3aee2ca931b8 298 IRprev = IR_avg_buffer[avg_ptr]; //load the sample you are about to write over
laserdad 4:3aee2ca931b8 299 IR_avg_buffer[avg_ptr] = ppgData[2*n]; //load the new sample in the buffer
laserdad 4:3aee2ca931b8 300 IRavg += (IR_avg_buffer[avg_ptr] - IRprev); //update the average by removing the old sample and adding the new
laserdad 4:3aee2ca931b8 301
laserdad 4:3aee2ca931b8 302 IRbaseline_prev = IR_baseline_buffer[baseline_ptr]; //load the sample you are about to write over
laserdad 4:3aee2ca931b8 303 IR_baseline_buffer[baseline_ptr] = ppgData[2*n]; //load the new sample in the buffer
laserdad 4:3aee2ca931b8 304 IRbaseline += (IR_baseline_buffer[baseline_ptr] - IRbaseline_prev); //update the average by removing the old sample and adding the new
laserdad 4:3aee2ca931b8 305
laserdad 3:d3a1fc19bee6 306 if(spo2)
laserdad 3:d3a1fc19bee6 307 {
laserdad 4:3aee2ca931b8 308 Rprev = R_avg_buffer[avg_ptr];
laserdad 4:3aee2ca931b8 309 R_avg_buffer[avg_ptr] = ppgData[2*n+1];
laserdad 4:3aee2ca931b8 310 Ravg += (R_avg_buffer[avg_ptr] - Rprev);
IDTsanjoseuser 8:21738f9c5835 311
laserdad 4:3aee2ca931b8 312 // 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 313
laserdad 4:3aee2ca931b8 314 Rbaseline_prev = R_baseline_buffer[baseline_ptr];
laserdad 4:3aee2ca931b8 315 R_baseline_buffer[baseline_ptr] = ppgData[2*n+1];
laserdad 4:3aee2ca931b8 316 Rbaseline += (R_baseline_buffer[baseline_ptr] - Rbaseline_prev);
laserdad 4:3aee2ca931b8 317
laserdad 4:3aee2ca931b8 318
IDTsanjoseuser 8:21738f9c5835 319 //PRINT RAW DATA
laserdad 9:98b9216f9ff3 320 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 9:98b9216f9ff3 321 // pc.printf("%d, %d\r\n",ppgData[2*n],ppgData[2*n+1]); //print without us timer (faster)
IDTsanjoseuser 8:21738f9c5835 322 //PRINT AVG DATA
IDTsanjoseuser 8:21738f9c5835 323 // pc.printf("%d,%d\r\n",IRavg/running_avg,Ravg/running_avg);
laserdad 4:3aee2ca931b8 324 // pc.printf("%d,%d\r\n",IRavg/running_avg-IRbaseline/running_baseline, Ravg/running_avg-Rbaseline/running_baseline);
laserdad 4:3aee2ca931b8 325
laserdad 4:3aee2ca931b8 326 // pc.printf("%d,%d,%d,%d\r\n",Ravg/running_avg,Rbaseline/running_baseline,Rbaseline_prev,Ravg/running_avg-Rbaseline/running_baseline);
laserdad 3:d3a1fc19bee6 327 }
laserdad 4:3aee2ca931b8 328 else
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];
laserdad 4:3aee2ca931b8 333 IR_avg_buffer[avg_ptr] = ppgData[2*n+1];
laserdad 4:3aee2ca931b8 334 prevAvg = IRavg;
laserdad 4:3aee2ca931b8 335 IRavg += (IR_avg_buffer[avg_ptr] - IRprev);
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 prevBaseline = IRbaseline;
laserdad 4:3aee2ca931b8 340 IRbaseline += (IR_baseline_buffer[baseline_ptr] - IRbaseline_prev); //update the average by removing the old sample and adding the new
IDTsanjoseuser 8:21738f9c5835 341
laserdad 4:3aee2ca931b8 342
IDTsanjoseuser 8:21738f9c5835 343 //PRINT RAW DATA
IDTsanjoseuser 8:21738f9c5835 344 pc.printf("%d\r\n%d\r\n",ppgData[2*n],ppgData[2*n+1]);
laserdad 9:98b9216f9ff3 345 // 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);
IDTsanjoseuser 8:21738f9c5835 346 //PRINT AVG DATA
IDTsanjoseuser 8:21738f9c5835 347 // pc.printf("%d\r\n%d\r\n",prevAvg/running_avg-prevBaseline/running_baseline,IRavg/running_avg-IRbaseline/running_baseline);
IDTsanjoseuser 8:21738f9c5835 348
laserdad 4:3aee2ca931b8 349 }
laserdad 3:d3a1fc19bee6 350 }
laserdad 4:3aee2ca931b8 351 intFlagged = 0;
laserdad 3:d3a1fc19bee6 352 }
laserdad 4:3aee2ca931b8 353 } //end if !intb
laserdad 4:3aee2ca931b8 354 }// end mode
laserdad 0:e9ae48b7f6f6 355 else
laserdad 0:e9ae48b7f6f6 356 {
laserdad 1:fb6b2b4d5d8a 357 wait_ms(sample_delay);
laserdad 5:ebe305e08430 358 if( meas_ps ? ob1203.psIsNew() : ob1203.lsIsNew() )
laserdad 1:fb6b2b4d5d8a 359 {
laserdad 5:ebe305e08430 360 meas_ps ? valid = ob1203.get_ps_ls_data(ps_ls_data) : valid = ob1203.get_ls_data(ps_ls_data);
laserdad 7:3ed0f0522b43 361 if(meas_ps)
laserdad 7:3ed0f0522b43 362 {
laserdad 7:3ed0f0522b43 363 ( ps_avg_ptr+1 == ps_running_avg ) ? ps_avg_ptr = 0 : ps_avg_ptr++;
laserdad 7:3ed0f0522b43 364 PSprev = PS_avg_buffer[ps_avg_ptr]; //load the sample you are about to write over
laserdad 7:3ed0f0522b43 365 PS_avg_buffer[ps_avg_ptr] = ps_ls_data[0]; //load the new sample in the buffer
laserdad 7:3ed0f0522b43 366 PSavg += (PS_avg_buffer[ps_avg_ptr] - PSprev); //update the average by removing the old sample and adding the new
laserdad 7:3ed0f0522b43 367 // 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 368 }
laserdad 5:ebe305e08430 369 if (meas_temp)
laserdad 5:ebe305e08430 370 {
laserdad 5:ebe305e08430 371 ob1203.setMainConfig();
laserdad 5:ebe305e08430 372 }
laserdad 4:3aee2ca931b8 373 // 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 7:3ed0f0522b43 374 pc.printf("%d, %d %d %d %d %d %d %d\r\n",(PSavg/ps_running_avg)>>6,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 375
laserdad 1:fb6b2b4d5d8a 376 }
laserdad 2:ee175f471ecb 377 // else
laserdad 2:ee175f471ecb 378 // {
laserdad 2:ee175f471ecb 379 // pc.printf("status = %04X\r\n",ob1203.get_status() );
laserdad 2:ee175f471ecb 380 // }
laserdad 0:e9ae48b7f6f6 381 }
laserdad 1:fb6b2b4d5d8a 382 }//end while
laserdad 1:fb6b2b4d5d8a 383 }//end main