AND / Mbed 2 deprecated POCBreath_V2_smd_commercial

POC Breath using SMD commercial sensors

Dependencies:   iAQ_Core Adafruit_SGP30_mbed mbed BME680

flow.h@6:f6faf142e5fc, 2020-05-01 (annotated)

Committer:
christodoulos
Date:
Fri May 01 11:58:59 2020 +0000
Revision:
6:f6faf142e5fc
Parent:
5:646a7e58989e
Child:
7:f37620a76a1d
POC Breath using SMD commercial sensors

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mehrnaz 2:ef98576cd67b 1 #include "mbed.h"
mehrnaz 2:ef98576cd67b 2
mehrnaz 3:3d51f8870e91 3 // First the inputs and pins are defined
mehrnaz 3:3d51f8870e91 4
christodoulos 5:646a7e58989e 5 AnalogIn flowIn(PA_1);//PA0 on schematic but PA1 on PCB
mehrnaz 3:3d51f8870e91 6 Serial co2(PC_10,PC_11);
mehrnaz 3:3d51f8870e91 7 AnalogIn sensor1(PC_0);
mehrnaz 3:3d51f8870e91 8 AnalogIn sensor2(PC_1);
mehrnaz 3:3d51f8870e91 9 AnalogIn sensor3(PC_2);
mehrnaz 3:3d51f8870e91 10 AnalogIn sensor4(PC_3);
christodoulos 5:646a7e58989e 11 AnalogIn sensor5(PA_4); //Also 2612
christodoulos 5:646a7e58989e 12 AnalogIn sensor6(PA_5); //Also 2610
christodoulos 5:646a7e58989e 13 AnalogIn sensor7(PA_6); //Also 2620
christodoulos 5:646a7e58989e 14 AnalogIn sensor8(PA_7); //Also 2602
christodoulos 5:646a7e58989e 15 AnalogIn temp(PA_0);//PA1 on schematic but PA0 on PCB
mehrnaz 2:ef98576cd67b 16
mehrnaz 3:3d51f8870e91 17 ///////////////////// FLOW LOOP /////////////////////////
mehrnaz 2:ef98576cd67b 18 float finalflow;
mehrnaz 2:ef98576cd67b 19 float flowVal1;
mehrnaz 2:ef98576cd67b 20 float flowVal2;
mehrnaz 2:ef98576cd67b 21 float P1;
mehrnaz 2:ef98576cd67b 22 int flag=0;
mehrnaz 2:ef98576cd67b 23 int o=0;
mehrnaz 2:ef98576cd67b 24 float bpArray[10];
christodoulos 5:646a7e58989e 25 float fp;
christodoulos 5:646a7e58989e 26 float sp;
mehrnaz 2:ef98576cd67b 27 float FPressure;
christodoulos 5:646a7e58989e 28
mehrnaz 2:ef98576cd67b 29 float flow()
mehrnaz 2:ef98576cd67b 30 {
mehrnaz 2:ef98576cd67b 31 while(1)
mehrnaz 2:ef98576cd67b 32 {
mehrnaz 2:ef98576cd67b 33 wait(0.01);
mehrnaz 2:ef98576cd67b 34 flowVal1=3.3*flowIn; //Logic level 3.3
mehrnaz 2:ef98576cd67b 35 flowVal2 = 1.5*flowVal1; //5v
mehrnaz 3:3d51f8870e91 36 P1 =(125*flowVal2)-62.5; //Pressure
mehrnaz 3:3d51f8870e91 37 //making the value of pressure positive inside the SQRT function:
mehrnaz 2:ef98576cd67b 38 if(flag==0)
mehrnaz 2:ef98576cd67b 39 {
mehrnaz 2:ef98576cd67b 40 finalflow=0;
mehrnaz 2:ef98576cd67b 41 bpArray[o]=P1;
mehrnaz 2:ef98576cd67b 42 sp+=bpArray[o];
mehrnaz 2:ef98576cd67b 43 o=o+1;
christodoulos 5:646a7e58989e 44 if (o==9)
mehrnaz 2:ef98576cd67b 45 {
mehrnaz 2:ef98576cd67b 46 fp=sp/10;
mehrnaz 2:ef98576cd67b 47 flag=1;
mehrnaz 2:ef98576cd67b 48 }
mehrnaz 2:ef98576cd67b 49 }
mehrnaz 2:ef98576cd67b 50 if (flag==1)
mehrnaz 2:ef98576cd67b 51 {
christodoulos 5:646a7e58989e 52 FPressure=P1-fp;
christodoulos 6:f6faf142e5fc 53 finalflow=(0.1724*sqrt(FPressure))+0.1637; //flow in litter per second, recalibrated at Imperial
christodoulos 5:646a7e58989e 54 if(isnan(finalflow)==true){
christodoulos 5:646a7e58989e 55 return 0;
christodoulos 5:646a7e58989e 56 }
christodoulos 5:646a7e58989e 57 else{
christodoulos 5:646a7e58989e 58 return finalflow;
christodoulos 5:646a7e58989e 59 }
mehrnaz 2:ef98576cd67b 60 }
mehrnaz 2:ef98576cd67b 61 }
mehrnaz 2:ef98576cd67b 62 }
mehrnaz 2:ef98576cd67b 63
mehrnaz 3:3d51f8870e91 64 ///////////////////// CO2 LOOP /////////////////////////
mehrnaz 3:3d51f8870e91 65 int value;
mehrnaz 2:ef98576cd67b 66 float carbon()
mehrnaz 2:ef98576cd67b 67 {
mehrnaz 2:ef98576cd67b 68 bool allow = false;
mehrnaz 2:ef98576cd67b 69 char c;
mehrnaz 2:ef98576cd67b 70 char co2_measure[5];
mehrnaz 2:ef98576cd67b 71 int count=0;
mehrnaz 2:ef98576cd67b 72
mehrnaz 2:ef98576cd67b 73 while(1)
mehrnaz 2:ef98576cd67b 74 {
mehrnaz 2:ef98576cd67b 75 c = co2.getc();
mehrnaz 3:3d51f8870e91 76 //based on the user manual PDF for the CO2 sensor, the value starts with "Z"
mehrnaz 3:3d51f8870e91 77 //and we need to extract the right number of CO2 value
mehrnaz 2:ef98576cd67b 78 if(c=='Z') {
mehrnaz 2:ef98576cd67b 79 allow = true;
mehrnaz 2:ef98576cd67b 80 }
mehrnaz 2:ef98576cd67b 81
mehrnaz 2:ef98576cd67b 82 if(allow) {
mehrnaz 2:ef98576cd67b 83 if(c>=48 && c<=57) {
mehrnaz 2:ef98576cd67b 84 co2_measure[count]=c;
mehrnaz 2:ef98576cd67b 85 count++;
mehrnaz 2:ef98576cd67b 86 }
mehrnaz 2:ef98576cd67b 87
mehrnaz 3:3d51f8870e91 88 if(count>=6) {
mehrnaz 2:ef98576cd67b 89 value = ((co2_measure[0]-'0')*100000+co2_measure[1]-'0')*10000+(co2_measure[2]-'0')*1000+(co2_measure[3]-'0')*100;
mehrnaz 2:ef98576cd67b 90 float CAR;
mehrnaz 2:ef98576cd67b 91 CAR=(float)value/10000;
mehrnaz 2:ef98576cd67b 92 count=0;
mehrnaz 2:ef98576cd67b 93 allow=false;
mehrnaz 2:ef98576cd67b 94 return CAR;
mehrnaz 2:ef98576cd67b 95 }
mehrnaz 2:ef98576cd67b 96 }
mehrnaz 2:ef98576cd67b 97 }
mehrnaz 2:ef98576cd67b 98 }
mehrnaz 2:ef98576cd67b 99
mehrnaz 3:3d51f8870e91 100 ///////////////////// TEMPERATURE LOOP /////////////////////////
mehrnaz 3:3d51f8870e91 101
mehrnaz 3:3d51f8870e91 102 float t2Cel;
mehrnaz 3:3d51f8870e91 103
mehrnaz 3:3d51f8870e91 104 float getTemp()
mehrnaz 3:3d51f8870e91 105 {
mehrnaz 3:3d51f8870e91 106 while(1) {
christodoulos 5:646a7e58989e 107 float B = 3380.00; //Define thermistor constant
christodoulos 5:646a7e58989e 108 float rRef=10000.00; // Define reference resistance
christodoulos 5:646a7e58989e 109 float r1=10000.00; // Define thermistor resistance at 25 C
christodoulos 5:646a7e58989e 110 float t1=25.00+273.00; // Define thermistor initial temperature s 25C in Kelvin
mehrnaz 3:3d51f8870e91 111 float x = temp.read(); //Measure input voltage at pin A0 in bits
mehrnaz 3:3d51f8870e91 112 float v = 3.3*x; //Convert bits into voltage
christodoulos 5:646a7e58989e 113 float r2 = (5*rRef/v)-rRef; //Convert voltage into thermistor resistance
mehrnaz 3:3d51f8870e91 114 float t2 = (B*t1)/(B-t1*log(r1/r2)); //Convert thermistor resistance into temperature in Kelvin (log means natural logarithm ln)
christodoulos 5:646a7e58989e 115 t2Cel = t2-273.00; //Convert temperature from Kelvin to Celcius
mehrnaz 3:3d51f8870e91 116 return t2Cel;
mehrnaz 3:3d51f8870e91 117 // printf("Temp: %f\n", t2Cel);
mehrnaz 3:3d51f8870e91 118 }
mehrnaz 3:3d51f8870e91 119 }
mehrnaz 3:3d51f8870e91 120
mehrnaz 3:3d51f8870e91 121 ///////////////////// 8-CHANNEL SENSOR LOOP /////////////////////////
mehrnaz 3:3d51f8870e91 122
christodoulos 6:f6faf142e5fc 123 int c2612S0()
christodoulos 5:646a7e58989e 124 {
christodoulos 5:646a7e58989e 125 float sen5;
christodoulos 6:f6faf142e5fc 126 float v5;
christodoulos 6:f6faf142e5fc 127 float res5;
christodoulos 6:f6faf142e5fc 128 float r5;
christodoulos 6:f6faf142e5fc 129
christodoulos 5:646a7e58989e 130 while(1){
christodoulos 6:f6faf142e5fc 131 v5=3.3*sensor5;
christodoulos 6:f6faf142e5fc 132 res5=5/v5;
christodoulos 6:f6faf142e5fc 133 r5=res5-1;
christodoulos 6:f6faf142e5fc 134 sen5=1000*r5;
christodoulos 6:f6faf142e5fc 135 return (int)sen5;
christodoulos 6:f6faf142e5fc 136 }
christodoulos 6:f6faf142e5fc 137 }
christodoulos 6:f6faf142e5fc 138
christodoulos 6:f6faf142e5fc 139 int c2612S1()
christodoulos 6:f6faf142e5fc 140 {
christodoulos 6:f6faf142e5fc 141 float sen5;
christodoulos 6:f6faf142e5fc 142 float v5;
christodoulos 6:f6faf142e5fc 143 float res5;
christodoulos 6:f6faf142e5fc 144 float r5;
christodoulos 6:f6faf142e5fc 145
christodoulos 6:f6faf142e5fc 146 while(1){
christodoulos 6:f6faf142e5fc 147 v5=(3.3*sensor5);
christodoulos 6:f6faf142e5fc 148 res5=5/v5;
christodoulos 6:f6faf142e5fc 149 r5=res5-1;
christodoulos 6:f6faf142e5fc 150 sen5=1000*r5;
christodoulos 5:646a7e58989e 151 return (int)sen5;
christodoulos 5:646a7e58989e 152 }
christodoulos 5:646a7e58989e 153 }
christodoulos 5:646a7e58989e 154
christodoulos 6:f6faf142e5fc 155 int c2610S0()
christodoulos 5:646a7e58989e 156 {
christodoulos 5:646a7e58989e 157 float sen6;
christodoulos 6:f6faf142e5fc 158 float v6;
christodoulos 6:f6faf142e5fc 159 float res6;
christodoulos 6:f6faf142e5fc 160 float r6;
christodoulos 6:f6faf142e5fc 161
christodoulos 5:646a7e58989e 162 while(1){
christodoulos 6:f6faf142e5fc 163 v6=3.3*sensor6;
christodoulos 6:f6faf142e5fc 164 res6=5/v6;
christodoulos 6:f6faf142e5fc 165 r6=res6-1;
christodoulos 6:f6faf142e5fc 166 sen6=1000*r6;
christodoulos 6:f6faf142e5fc 167 return (int)sen6;
christodoulos 6:f6faf142e5fc 168 }
christodoulos 6:f6faf142e5fc 169 }
christodoulos 6:f6faf142e5fc 170
christodoulos 6:f6faf142e5fc 171 int c2610S1()
christodoulos 6:f6faf142e5fc 172 {
christodoulos 6:f6faf142e5fc 173 float sen6;
christodoulos 6:f6faf142e5fc 174 float v6;
christodoulos 6:f6faf142e5fc 175 float res6;
christodoulos 6:f6faf142e5fc 176 float r6;
christodoulos 6:f6faf142e5fc 177
christodoulos 6:f6faf142e5fc 178 while(1){
christodoulos 6:f6faf142e5fc 179 v6=(3.3*sensor6);
christodoulos 6:f6faf142e5fc 180 res6=5/v6;
christodoulos 6:f6faf142e5fc 181 r6=res6-1;
christodoulos 6:f6faf142e5fc 182 sen6=1000*r6;
christodoulos 5:646a7e58989e 183 return (int)sen6;
christodoulos 5:646a7e58989e 184 }
christodoulos 5:646a7e58989e 185 }
christodoulos 5:646a7e58989e 186
christodoulos 6:f6faf142e5fc 187 int c2620S0()
mehrnaz 3:3d51f8870e91 188 {
christodoulos 5:646a7e58989e 189 float sen7;
christodoulos 6:f6faf142e5fc 190 float v7;
christodoulos 6:f6faf142e5fc 191 float res7;
christodoulos 6:f6faf142e5fc 192 float r7;
christodoulos 6:f6faf142e5fc 193
christodoulos 5:646a7e58989e 194 while(1){
christodoulos 6:f6faf142e5fc 195 v7=3.3*sensor7;
christodoulos 6:f6faf142e5fc 196 res7=5/v7;
christodoulos 6:f6faf142e5fc 197 r7=res7-1;
christodoulos 6:f6faf142e5fc 198 sen7=1000*r7;
christodoulos 5:646a7e58989e 199 return (int)sen7;
christodoulos 5:646a7e58989e 200 }
christodoulos 5:646a7e58989e 201 }
christodoulos 5:646a7e58989e 202
christodoulos 6:f6faf142e5fc 203 int c2620S1()
christodoulos 6:f6faf142e5fc 204 {
christodoulos 6:f6faf142e5fc 205 float sen7;
christodoulos 6:f6faf142e5fc 206 float v7;
christodoulos 6:f6faf142e5fc 207 float res7;
christodoulos 6:f6faf142e5fc 208 float r7;
christodoulos 6:f6faf142e5fc 209
christodoulos 6:f6faf142e5fc 210 while(1){
christodoulos 6:f6faf142e5fc 211 v7=(3.3*sensor7);
christodoulos 6:f6faf142e5fc 212 res7=5/v7;
christodoulos 6:f6faf142e5fc 213 r7=res7-1;
christodoulos 6:f6faf142e5fc 214 sen7=1000*r7;
christodoulos 6:f6faf142e5fc 215 return (int)sen7;
christodoulos 6:f6faf142e5fc 216 }
christodoulos 6:f6faf142e5fc 217 }
christodoulos 6:f6faf142e5fc 218
christodoulos 6:f6faf142e5fc 219 int c2602S0()
christodoulos 5:646a7e58989e 220 {
christodoulos 5:646a7e58989e 221 float sen8;
christodoulos 6:f6faf142e5fc 222 float v8;
christodoulos 6:f6faf142e5fc 223 float res8;
christodoulos 6:f6faf142e5fc 224 float r8;
christodoulos 6:f6faf142e5fc 225
mehrnaz 3:3d51f8870e91 226 while(1){
christodoulos 6:f6faf142e5fc 227 v8=3.3*sensor8;
christodoulos 6:f6faf142e5fc 228 res8=5/v8;
christodoulos 6:f6faf142e5fc 229 r8=res8-1;
christodoulos 6:f6faf142e5fc 230 sen8=1000*r8;
christodoulos 6:f6faf142e5fc 231 return (int)sen8;
christodoulos 6:f6faf142e5fc 232 }
christodoulos 6:f6faf142e5fc 233 }
christodoulos 6:f6faf142e5fc 234
christodoulos 6:f6faf142e5fc 235 int c2602S1()
christodoulos 6:f6faf142e5fc 236 {
christodoulos 6:f6faf142e5fc 237 float sen8;
christodoulos 6:f6faf142e5fc 238 float v8;
christodoulos 6:f6faf142e5fc 239 float res8;
christodoulos 6:f6faf142e5fc 240 float r8;
christodoulos 6:f6faf142e5fc 241
christodoulos 6:f6faf142e5fc 242 while(1){
christodoulos 6:f6faf142e5fc 243 v8=(3.3*sensor8);
christodoulos 6:f6faf142e5fc 244 res8=5/v8;
christodoulos 6:f6faf142e5fc 245 r8=res8-1;
christodoulos 6:f6faf142e5fc 246 sen8=1000*r8;
christodoulos 5:646a7e58989e 247 return (int)sen8;
christodoulos 5:646a7e58989e 248 }
christodoulos 5:646a7e58989e 249 }
christodoulos 5:646a7e58989e 250
christodoulos 5:646a7e58989e 251 int s1()
christodoulos 5:646a7e58989e 252 {
christodoulos 5:646a7e58989e 253 int sen1;
christodoulos 5:646a7e58989e 254 while(1){
christodoulos 5:646a7e58989e 255 sen1=((5E6)/(sensor1*3.3))-(5E6);
mehrnaz 3:3d51f8870e91 256 return sen1;
mehrnaz 3:3d51f8870e91 257 }
mehrnaz 3:3d51f8870e91 258 }
christodoulos 5:646a7e58989e 259 int s2()
mehrnaz 3:3d51f8870e91 260 {
christodoulos 5:646a7e58989e 261 int sen2;
mehrnaz 3:3d51f8870e91 262 while(1){
christodoulos 5:646a7e58989e 263 sen2=((5E6)/(sensor2*3.3))-(5E6);
mehrnaz 3:3d51f8870e91 264 return sen2;
mehrnaz 3:3d51f8870e91 265 }
mehrnaz 3:3d51f8870e91 266 }
christodoulos 5:646a7e58989e 267 int s3()
mehrnaz 3:3d51f8870e91 268 {
christodoulos 5:646a7e58989e 269 int sen3;
mehrnaz 3:3d51f8870e91 270 while(1){
christodoulos 5:646a7e58989e 271 sen3=((5E6)/(sensor3*3.3))-(5E6);
mehrnaz 3:3d51f8870e91 272 return sen3;
mehrnaz 3:3d51f8870e91 273 }
mehrnaz 3:3d51f8870e91 274 }
christodoulos 5:646a7e58989e 275 int s4()
mehrnaz 3:3d51f8870e91 276 {
christodoulos 5:646a7e58989e 277 int sen4;
mehrnaz 3:3d51f8870e91 278 while(1){
christodoulos 5:646a7e58989e 279 sen4=((5E6)/(sensor4*3.3))-(5E6);
mehrnaz 3:3d51f8870e91 280 return sen4;
mehrnaz 3:3d51f8870e91 281 }
mehrnaz 3:3d51f8870e91 282 }
christodoulos 5:646a7e58989e 283 int s5()
mehrnaz 3:3d51f8870e91 284 {
christodoulos 5:646a7e58989e 285 int sen5;
mehrnaz 3:3d51f8870e91 286 while(1){
christodoulos 5:646a7e58989e 287 sen5=((5E6)/(sensor5*3.3))-(5E6);
mehrnaz 3:3d51f8870e91 288 return sen5;
mehrnaz 3:3d51f8870e91 289 }
mehrnaz 3:3d51f8870e91 290 }
christodoulos 5:646a7e58989e 291 int s6()
mehrnaz 3:3d51f8870e91 292 {
christodoulos 5:646a7e58989e 293 int sen6;
mehrnaz 3:3d51f8870e91 294 while(1){
christodoulos 5:646a7e58989e 295 sen6=((5E6)/(sensor6*3.3))-(5E6);
mehrnaz 3:3d51f8870e91 296 return sen6;
mehrnaz 3:3d51f8870e91 297 }
mehrnaz 3:3d51f8870e91 298 }
christodoulos 5:646a7e58989e 299 int s7()
mehrnaz 3:3d51f8870e91 300 {
christodoulos 5:646a7e58989e 301 int sen7;
mehrnaz 3:3d51f8870e91 302 while(1){
christodoulos 5:646a7e58989e 303 sen7=((5E6)/(sensor7*3.3))-(5E6);
mehrnaz 3:3d51f8870e91 304 return sen7;
mehrnaz 3:3d51f8870e91 305 }
mehrnaz 3:3d51f8870e91 306 }
christodoulos 5:646a7e58989e 307 int s8()
mehrnaz 3:3d51f8870e91 308 {
christodoulos 5:646a7e58989e 309 int sen8;
mehrnaz 3:3d51f8870e91 310 while(1){
christodoulos 5:646a7e58989e 311 sen8=((5E6)/(sensor8*3.3))-(5E6);
mehrnaz 3:3d51f8870e91 312 return sen8;
mehrnaz 3:3d51f8870e91 313 }
mehrnaz 3:3d51f8870e91 314 }