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229 lines
8.2 KiB
C
229 lines
8.2 KiB
C
/*
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*/
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#include<stdio.h>
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#include<fcntl.h>
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#include<unistd.h>
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#include<string.h>
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#include<stdlib.h>
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#include<time.h>
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#include"uart.c"
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#define data_file_path "/var/lib/cloud9/daq-serial-bbb/data.dat"
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#define GC0017 4 //co2
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#define CM31911 1 //co, t
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#define OX0052 2 //o2
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#define Rep_Dev_ID "Y\r\n"
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#define Pulling_Mode "K 2\r\n"
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#define OX_P_Mode "M 1\r\n"
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#define FILnUNFIL "M 6\r\n"
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#define unf_gas_con "z\r\n"
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#define fil_gas_con "Z\r\n"
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#define Temperature "T\r\n"
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#define get_readigns "Q\r\n"
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#define percent_oxigen "%\r\n"
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#define ppm_oxigen "O\r\n"
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#define M_zZTHBD "M 14406\r\n"
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#define Readings_OX "A\r\n"
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int sensConf(unsigned char uartNumber, int baudRate, unsigned char mode[], unsigned char response[]);
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int measure(unsigned char uartNumber, unsigned char command[], int multiplier, int excess);
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char *gmeasures(char src[], char fval, int nchar);
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int str2int(unsigned char *ptr);
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int DAQ(int t_hrs, int tm_s);
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int main(int argc, char *argv[]){
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//char bioxCsen[], OXsen[], monoxCsen[];
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int T,t;
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if(argc!=3){
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printf("Invalid number of arguments,\n usage: daq <time(h)> <sampling period(s)>\nexiting!\n");
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return -2;
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}
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//configuración de sensores
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printf("Configuring CO2 sensor\n");
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sensConf(GC0017, B9600, Pulling_Mode, " K 00002\r\n", 5);
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sensConf(GC0017, B9600, FILnUNFIL, " M 00006\r\n", 5);
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printf("Configuring CO sensor\n");
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sensConf(CM31911, B9600, Pulling_Mode, "K 00002\r\n", 5);
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sensConf(CM31911, B9600, M_zZTHBD, "M 14406\r\n", 5);
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printf("Configuring O2 sensor\n");
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sensConf(OX0052, B9600, OX_P_Mode, "M 01\r\n", 5);
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//adquisición
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T = atoi(argv[1]);//str to int
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t = atoi(argv[2]);
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printf("Starting data acquisition with duration of %dh and every %ds\n", T, t);
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DAQ(T, t);
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sleep(1);
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//finalización
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//deinit uart
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uartClose(GC0017);
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uartClose(CM31911);
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uartClose(OX0052);
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printf("Exiting of the program...\n");
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return 0;
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}
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int sensConf(unsigned char uartNumber, int baudRate, unsigned char mode[], unsigned char response[], int tries){
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int count;
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uartConf(uartNumber, baudRate);
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while(tries){
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uartTransmit(uartNumber, mode);
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tcdrain(uartFile[uartNumber]); //wait all data has been sent
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printf("Command sended.\n");
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//usleep(100000); //give the sensor a chance to respond
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count = uartReceive(uartNumber);
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if (count == 0) printf("There was no data available to read!\n");
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else if (strcmp(receive[uartNumber], response) == 0) {
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printf("Sensor configurated.\n");
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return 0;
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} else {
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printf("The following was read in [%d]: %s\n",count,receive[uartNumber]);
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//char *c = receive[uartNumber];
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//while (*c != '\0'){
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// printf("%d = '%c'\n",*c, *c);
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// c++;
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//}
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}
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tries --;
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}
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printf("Sensor configuration failed.\n");
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return -1;
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}
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int measure(unsigned char uartNumber, unsigned char command[], int multiplier, int excess){
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int measure;
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uartTransmit(uartNumber, command);
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uartReceive(uartNumber);
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measure = (str2int(&receive[uartNumber]) - excess)*multiplier ;
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return measure;
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}
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int read_measure(unsigned char uartNumber, int multiplier, int excess){
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int measure;
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uartReceive(uartNumber);
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measure = (str2int(&receive[uartNumber]) - excess)*multiplier ;
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return measure;
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}
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int str2int(unsigned char *ptr){
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int number = 0;
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while (*ptr != '\0') {
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if ((*ptr >= '0') && (*ptr <= '9')) {
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int dig = (*ptr) - '0';
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number = number*10 + dig;
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}
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ptr++;
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}
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return number;
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}
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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
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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]=""; //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; //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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ctime(&curtime), '%'); // send the value to the file
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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; //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); //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(); //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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//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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memcpy(co_f, gmeasures(receive[CM31911], 'Z', 5), 5);
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memcpy(o2_ppm, gmeasures(receive[OX0052], 'O', 6), 6);
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memcpy(o2_xcent, gmeasures(receive[OX0052], '%', 6), 6);
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memcpy(co2_temp, gmeasures(receive[CM31911], 'T', 5), 5);
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memcpy(o2_temp, gmeasures(receive[OX0052], 'T', 5), 5);
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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); // 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; //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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return 0;
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}
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char *gmeasures(char src[], char fval, int nchar){
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char * ptr = &src[0];
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static char s[10]="";
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while(*ptr != fval) ptr++;
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ptr += 2;
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memcpy(s, ptr, nchar);
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return s;
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}
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