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@ -140,24 +140,22 @@ int str2int(unsigned char *ptr){
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int DAQ(int t_hrs, int tm_s)
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{
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FILE* dfp; // create a file pointer dfp
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//int co2, co, o2, temp;
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FILE* dfp; // create a file pointer
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unsigned char co2_uf[10]="", co2_f[10]="",
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co_uf[10]="", co_f[10]="",
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o2_ppm[10]="", o2_xcent[10]="",
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co2_temp[10]="", o2_temp[10]="",
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co2_press[10]="", o2_press[10]="",
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co2_relH[10]="", DATA[100]="";
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clock_t start_t, end_t;
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time_t new_time, prev_time, t0;
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double tm_ms = tm_s*1e6 - 0.20e6;
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double dif = tm_ms;
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co2_relH[10]="", DATA[100]=""; //measurements varirables
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clock_t start_t, end_t; //processing time measurements variables
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time_t new_time, prev_time, t0; //time control variables
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double tm_ms = tm_s*1e6 - 0.20e6; //tiempo de muestreo en milisegundos (-) margen
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double dif = tm_ms; //diferencia de tiempo(time to sleep)
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//registro datos de inicio
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dfp = fopen(data_file_path, "w"); // open file for writing
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time_t curtime;
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time(&curtime);
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time_t curtime; //current time (date)
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time(&curtime); //saving date in curtime
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fprintf(dfp, "%sStarting DAQ\ntime(s)\tCO2 unfil(ppm)\tCO2 fil(ppm)\tCO unfil(ppm)\tCO fil(ppm)"\
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"\tO2(ppm)\tO2(%c)\tTemperaure C02(ºC*10)\tTemperaure 02(ºC)"\
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"\tPressure C02(.mBar)\tPresure 02(mBar)\tRelative Humidity(.)\n",
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@ -165,28 +163,27 @@ int DAQ(int t_hrs, int tm_s)
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fclose(dfp); // close the file using the file pointer
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//ciclo
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t0 = time(NULL) + tm_s;
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new_time = t0;
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for(int i = 0; i < (t_hrs*3600); i=i+tm_s){
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t0 = time(NULL) + tm_s; //intitial time = current time + tiempo de muestreo
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new_time = t0; //saving initial time in time control variable
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for(int i = 0; i < (t_hrs*3600); i=i+tm_s){ //cycle from 0 to adquisition time (seconds), incrementing sampling period
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if (dif <= 0) printf("T=%d Communication time exceded.\n", (int)(new_time-t0));
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else usleep((int)dif);
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else usleep((int)dif); //checking if there's time to sleep
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//waiting new second (time.h system) to start measurements
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if (time(NULL) < new_time) while(new_time != time(NULL));
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else printf("T=%d time error.\n", (int)(new_time-t0));
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start_t = clock();
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new_time = time(NULL);
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//command transmitions
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start_t = clock(); //saving start time
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new_time = time(NULL); //refresh new_time (next iteration)
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//transmiting commands to sensors
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uartTransmit(CM31911, get_readigns);
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uartTransmit(OX0052, Readings_OX);
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uartTransmit(GC0017, get_readigns);
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//uart receptions
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uartTransmit(GC0017, get_readigns
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//receiving replys from sensors
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uartReceive(OX0052);
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uartReceive(CM31911);
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uartReceive(GC0017);
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//saving gas measurements in measurements variables
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memcpy(co2_uf, gmeasures(receive[GC0017], 'z', 5), 5);
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memcpy(co2_f, gmeasures(receive[GC0017], 'Z', 5), 5);
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memcpy(co_uf, gmeasures(receive[CM31911], 'z', 5), 5);
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@ -198,22 +195,22 @@ int DAQ(int t_hrs, int tm_s)
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memcpy(co2_press,gmeasures(receive[CM31911], 'B', 5), 5);
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memcpy(o2_press, gmeasures(receive[OX0052], 'P', 4), 4);
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memcpy(co2_relH, gmeasures(receive[CM31911], 'H', 5), 5);
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//saving formated measurements in string DATA
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sprintf(DATA, "%d\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s",
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(int)(new_time-t0), co2_uf, co2_f, co_uf, co_f, o2_ppm, o2_xcent,
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co2_temp, o2_temp, co2_press, o2_press, co2_relH);
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//showing measurements on display
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printf("time(s)\tCO2 unfil(ppm)\tCO2 fil(ppm)\tCO unfil(ppm)\tCO fil(ppm)"\
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"\tO2(ppm)\tO2(%c)\tTemperaure C02(ºC*10)\tTemperaure 02(ºC)"\
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"\tPressure C02(.mBar)\tPresure 02(mBar)\tRelative Humidity(.)\n", '%');
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printf("%s\n", DATA);
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dfp = fopen(data_file_path, "a"); // open file for writing
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fprintf(dfp, "%s\n", DATA);
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fprintf(dfp, "%s\n", DATA); // saving measurements string to data file
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fclose(dfp); // close the file using the file pointer
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new_time += tm_s;
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end_t = clock();
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new_time += tm_s; //adding sampling period to new_time
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end_t = clock(); //saving end time
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//calculate time to sleep
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dif = tm_ms - ((double)(end_t - start_t)*1e6 / CLOCKS_PER_SEC);
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}
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